Professor Fritz Geiser

Biography

Fritz is the inaugural Madgwick Distinguished Professor (Research). He works in Zoology, is interested in the ecological physiology of animals and has studied/worked at Universities in Austria, Australia, Canada, China, Germany,  Patagonia (Argentina), South Africa and the USA, and also at two CSIRO Divisions in Australia.

Scholarships/Awards/Honours

• 1981-82 Research Scholarship awarded by the German Academic Exchange Service (DAAD)
• 1983-85 Flinders University Research Scholarship
• 1985-87 Alexander von Humboldt-Foundation Feodor Lynen Research Fellowship
• 2002 Vice-Chancellor''s Award for Excellence in Research, University of New England
• 2002 Supervisor of the Year Award, University of New England Postgraduate Association
• Most recent paper in: The Eighty Most Cited Articles in Physiological Zoology/Physiological and Biochemical Zoology, 1927 to 2006
• 2007 Australian Mammal Society, Scruffy Award
• 2009 Guinness World Records. Yearlong hibernation in a marsupial mammal. Naturwissenschaften 94: 941-944
• 2009 Top 5% of cited authors for journals in Biology and Biochemistry. American Asthma Foundation
• 2010 Prize for Overall Best Paper awarded at the 14th Australasian Bat Society Conference, Darwin
• 2013 Discovery Outstanding Researcher Award (DORA), Australian Research Council
• 2015 Appointment, College of Experts, Australian Research Council
• 2016 Madgwick Distinguished Professor (Research) Award
• 2017 Chinese Academy of Sciences, Visiting Fellow
• 2017 Top 90 papers in journal, 1927 to 2017: #8 Geiser & Ruf 1995. Physiological & Biochemical Zoology 90: 125-138

Professional Experience

• 1978-81 Demonstrator and Research Assistant, Institutes of Zoology and Zoophysiology, Universität Hohenheim
• 1981-83 Research Associate, CSIRO Division of Food Research and School of Biological Sciences, Macquarie University, and Research Assistant, Schools of Chemistry and Biological Sciences Macquarie University, Sydney, Australia
• 1983-85 Demonstrator, Biological Sciences, Flinders University, Adelaide
• 1985-87 Postdoctoral Research Fellow, Department of Zoology, University of Washington, Seattle, USA
• 1987 April-December, Postdoctoral Research Fellow, Department of Zoology, University of Adelaide, Adelaide
• 1988- Lecturer, Senior Lecturer (1992), Associate Professor (1997), Professor (2003), Zoology, University of New England, Armidale, Australia
• 1991-92 Visiting Research Fellow, Special Research Centre for Ecophysiology, Philipps University, Marburg, Germany (Sabbatical Leave, 6 Months)
• 1998 Visiting Professor, Department of Biology, Colorado State University, Fort Collins, Colorado, USA (Sabbatical Leave, 2.5 Month)
• 2004 Visiting Professor, Department of Biology, University of Regina, Regina, Saskatchewan, Canada (Sabbatical Leave, 1 Month)
• 1998-07 and 2010 Convenor (Head) Division of Zoology, University of New England
• 2002-06 Chair, Animal Ethics Committee, University of New England
• 2005 Associate Dean Research, Faculty of the Sciences, University of New England (5 months)
• 2002- Director, Research Centre for Behavioural and Physiological Ecology (BPERC)
• 2006-09 President, Australian Mammal Society Inc.
• 2008 Visiting Professor, Department of Biology, University of Sydney, Sydney, Australia, and Department of Zoology, Nelson Mandela Metropolitan University, Pt. Elizabeth, South Africa (Sabbatical Leave, 6 months)
• 2011 Visiting Professor, Physiology, University of Sydney, and Facultad de Ciencias Naturales, Univ. Nacional de la Patagonia, Esquel, Argentina (Sabbatical Leave, 6 months)
• 2012 Research Evaluation Committee, Excellence in Research for Australia (ERA), Australian Research Council
• 2015 Visiting Professor, Integrative Biology and Evolution, University of Veterinary Medicine, Vienna, Austria (2 months)
• 2015 Research Evaluation Committee, Excellence in Research for Australia (ERA), Australian Research Council
• 2016-18 Biological Sciences and Biotechnology College of Experts, Australian Research Council

Qualifications

• 1980 Diplom in Biology, Univ. Hohenheim, Stuttgart, Germany
• 1985 PhD, Biological Sciences, Flinders Univ. and CSIRO Human Nutrition, Adelaide, Australia

Teaching Areas

• Animal Structure and Function, BIOL110
• Vertebrate Zoology, ZOOL203
• Ecological & Comparative Physiology, ZOOL327

Research Interests

• Ecological Physiology
• Comparative Physiology and Biochemistry
• Thermoregulation and Energetics
• Hibernation and Daily Torpor

Research animals

Mammals

• Monotremes (Echidnas)
• Marsupials (Dasyurids, Pygmy-possums, Gliders, Opossums)

• Placentals (Bats, Rodents, Elephant Shrews)

Birds

• Honeyeaters, other Passerines
• Kookaburras
• Owlet-nightjars,Tawny Frogmouths

Reptiles and Amphibians

• Lizards and frogs

Research Supervision Experience

Recent Honours & Postgraduate Students

PhD students

• Artiom Bondarenco - Ecological physiology of desert bats
• Shannon Currie - Cold-hearted bats
• Daniella Rojas - Torpor and reproduction
• Chris Wacker - Intraspecific variation of thermal biology in dasyurids
• Anna Doty - Bats and Fire

Honours & MSc students

• Kodie Noy - Thermo-energetics of Phascogales

Research Students (completed)

• Caroline Jones (1990) Torpor in the feathertail glider, Acrobates pygmaeus (Marsupialia: Acrobatidae). Honours Thesis, First Class, 79pp
• Susan Wyborn (1990) The effect of temperature on ontogeny of morphology and thermal physiology of Mus musculus. Honours Thesis, First Class, University Medal, 75pp
• Caroline Copley (1990) Diet and thermal physiology of the sugar glider, Petaurus breviceps. Graduate Diploma of Science Thesis, 91pp
• Joanne Holloway (1992) The effect of photoperiod on the thermal and reproductive physiology of the dasyurid marsupial Sminthopsis crassicaudata. Honours Thesis, First class, University Medal, E.H. Booth Prize and Medal, 68pp
• Michael Halliger (1993) The effect of mining on reptile assemblages. Master of Letters Thesis, 74pp
• Darren Paul (1994) An examination of aspects of the thermal physiology and energetics of the scincid lizard Trachydosaurus rugosus. Honours Thesis, First Class, University Medal, E.H. Booth Prize and Medal, 132pp
• Mark Strickson (1994) Cold-hardiness in the light brown apple moth Epiphyas postvittana (Walker) (Lepidoptera: Tortricidae). Honours Thesis (50% supervision), First Class, 91pp
• Tracy Maddocks (1995) The thermal physiology of silvereyes (Zosterops lateralis). Masters Qualifying Thesis, 61pp
• Dionne Coburn (1995) Thermal biology and energetics of the Queensland blossom-bat Syconycteris australis(Peters 1867). Honours Thesis, First Class, 97pp
• Chris Holden (1996) The environmental physiology of the scorpion Urodacus manicatus (Thorell)(Scorpionidae). PhD Thesis, 233pp
• Vanessa Narbeth (1997) Ecology and thermal biology of the western pygmy-possum Cercartetus concinnus, in the Coorong National Park, South Australia. Honours Thesis, Second Class Division A, 54pp
• Wendy Bartels (1997) Thermal biology of the tropical northern blossom-bat, Macroglossus minimus. Masters Qualifying Thesis, 45pp
• Xiaowei Song (1997) Thermal and metabolic strategies of two marsupials, Sminthopsis macroura and Cercartetus nanus: a physiological comparison between daily torpor and hibernation. PhD Thesis, 209pp
• Joanne Holloway (1998) Metabolism and thermoregulation in the sugar glider, Petaurus breviceps(Marsupialia). PhD Thesis, 271pp
• Christopher Turbill (1999) Thermal biology and roost selection of long-eared bats, Nyctophilus geoffroyi. Honours Thesis, First Class, 94pp
• Siobhan Rothsey (2000) The reactions of larval copepods and monogeneans to light, gravity and magnetic fields. Honours Thesis (20% supervision), First Class, 83pp
• Nicole Feay (2000) The effect of microclimate and behaviour on thermoregulation of the tawny frogmouth (Podargus strigoides). Graduate Diploma of Science Thesis, 39pp
• Nereda Christian (2001) Activity patterns and thermal biology of free-ranging sugar gliders (Petaurus breviceps). Honours Thesis, First Class, 106pp
• Tracy Maddocks (2001) The thermal physiology and and energetics of Australian birds. PhD Thesis, 290pp
• Wendy Westman (2003) Metabolic fuel availability and use in relation to torpor in marsupials. PhD thesis, 181pp
• Alison Goldzieher (2004) Fattening and torpor in the eastern pygmy-possum, Cercartetus nanus. Honours Thesis, First Class, 78pp
• David Paull (2005) The biology and ecophysiology of the Pilliga Mouse Pseudomys pilligaensis and the Common Dunnart Sminthopsis murina in Pilliga East State Forest. Masters Thesis, 144pp
• Chris Turbill (2006) Thermoregulatory physiology and ecology of tree-roosting bats. PhD thesis, 208pp
• Nereda Christian (2007) Ecology, energetics and thermal biology of sugar gliders. PhD thesis, 230pp
• Lisa Doucette (2007) Behavioural ecology and thermal physiology of Australian owlet-nightjars (Aegotheles cristatus), 292pp
• Lisa Warnecke (2008) Ecological physiology and thermal energetics of two dasyurid marsupials. PhD thesis, 216 pp
• Daniella Rojas (2009) Locomotion as a function of body temperature. Honours thesis, First Class, 91 pp
• Chris Wacker (2009) What controls seasonal torpor and activity in the marsupial Sminthopsis crassicaudata (Dasyuridae). Honours thesis, First Class, 93 pp.
• James M Turner (2010) The physiological ecology and thermal biology of the western and eastern pygmy-possums (Cercartetus spp.). PhD Thesis, 244pp
• Clare Stawski (2010) Ecology and thermal physiology of an insectivorous bat restricted to subtropical and tropical Australia. PhD Thesis, 221pp
• Jaya Matthews (2013) Post-fire ecology of small mammals and the potential role of torpor. Honours Thesis, First Class, 81 pp.
• Artiom Bondarenco (2014) Torpor and thermal energetics in Australian arid zone bats. PhD Thesis, 173pp
• Kodie Noy (2014) Thermal energetics of the red-tailed phascogale (Phascogale caluta). Honours Thesis, Second Class Division A, 50pp
• A. Daniella Rojas (2014) Thermal biology and activity of antechinus (Marsupialia) in relation to reproduction. PhD Thesis, 225pp
• Taylor Hume (2015) The physiology and behaviour of Antechinus stuartii in a post-fire landscape. Honours Thesis, Second Class Division A, 74pp
• Shannon E Currie (2015) Cardiorespiratory function and metabolism of heterothermic bats. PhD Thesis 208pp. University of New England, Chancellor’s Doctoral Research Medal.
• Anna Doty (2016) The effects of fire and environmental variables on the ecophysiology, ecology and behaviour of insectivorous bats. PhD thesis, 210pp
• Cassie Parker (2017) Behaviour and physiology of yellow-footed antechinus during the reproductive season. Co-supervisor, Honours Thesis, First Class, 80pp
• Christine B. Wacker (2017) Thermal energetics of dunnarts (Marsupialia) in relation to development, insulation, torpor expression and basking. PhD thesis, 193pp. University of New England, Chancellor’s Doctoral Research Medal.
• Melissa Chenery (2018) Behaviour and physiology of free-ranging little forest bats (Vepadelus vulturnus) during winter. Co-supervisor, Honours Thesis, First Class, 79pp
• Martin Campbell (2023) Thermal biology of two burrowing arid zone species: The Great desert skink (Liopholis kintorei) and the Brush-tailed mulgara (Dasycercus blythi). Master of Environmental Science Thesis, 138pp

Publications

Books

Geiser F (2021) Ecological Physiology of Daily Torpor and Hibernation. Springer Nature Switzerland, 334 pp

Geiser F, Hulbert AJ, Nicol SC (eds.) (1996) Adaptations to the Cold: Tenth International Hibernation Symposium. University of New England Press, Armidale. 404 pp

COPIES of 1996 book are STILL AVAILABLE. IF YOU ARE INTERESTED PLEASE CONTACT: fgeiser@une.edu.au

Published Papers

2023

Dausmann KH, Körtner G, Aharon-Rotman Y, Currie SE, Geiser F (2023)  Flexible employment of torpor in squirrel gliders (Petaurus norfolcensis): an adaptation to unpredictable climate? Physiological and Biochemical Zoology 93: doi.org/10.1086/722131

Geiser F, Cooper CE (2023) Daily torpor, hibernation, and heterothermy in marsupials. In: Caceres NC, Dickman CR (eds) American and Australasia Marsupials. Springer Nature Switzerland. Doi.org/10.1007/978-3-030-88800-8_43-1. Invited Review

Geiser F, Ruf T (2023) Long-term survival, temperature, and torpor patterns. Scientific Reports 13: 6673

Aharon-Rotman Y, McEvoy JF, Beckmann C, Geiser F (2023) Pronounced daily heterothermy in the White-throated Treecreeper Cormobates leucophaea (2023) Journal of Ornithology. https://doi.org/10.1007/s10336-023-02092-6

Shankar A, Welch KC Jr, Eberts ER, Geiser F, Halter S, L Keicher L, Levesque DL, Nowack J, Wolf BO, Wolfe SW, (2023) Daily Torpor in Birds and Mammals: Past, Present, and Future of the Field. Integrative and Comparative Biology, icad095

Nowack J, Stawski C, Geiser F, Levesque DL (2023) Rare and opportunistic use of torpor in mammals–an echo from the past? Integrative and Comparative Biology, icad067

Wacker C, Geiser F (2023) The rate of cooling during torpor entry drives torpor patterns in a small marsupial. Physiological and Biochemical Zoology. In press

2022

• Chenery M, Geiser F, Stawski C (2022) Thermal biology and roost selection of free-ranging male little forest bats, Vespadelus vulturnus, during winter. Journal of Mammalogy: in press
• Geiser F, Ruf T (2022) Who is who among the heterotherms. In Frank CL (ed) Hibernation and daily torpor in vertebrates. Johns Hopkins University Press, Baltimore, Maryland. In press. Invited Review
• Ruf T, Giroud S, Geiser F (2022) Hypothesis and Theory: A Two-Process Model of Torpor-Arousal Regulation in Hibernators. Frontiers in Physiology.
• Withers P, Cooper C, Körtner G, Geiser F (2022) Small Alpine Marsupials Regulate Evaporative Water Loss, Suggesting a Thermoregulatory Role Rather than a Water Conservation Role. Physiological and Biochemical Zoology, volume 95, number 3, May/June 2022. Published by the University of Chicago Press.

2021

• Hebart ML, Herd RM, Oddy VH, Geiser F, Pitchford WS (2021) Selection for lower residual fed intake in mice is accompanied by increased body fatness and lower activity, but not lower metabolic rate. Animal Production Science 61: 1303-1314
• Aharon-Rotman Y, McEvoy JF, Beckman C, Geiser F (2021) Heterothermy in a small passerine: eastern yellow robins use nocturnal torpor in winter. Frontiers in Ecology and Evolution 9: 759726. Doi: 10.3389/fevo.2021.759726

2020

• Stawski C, Geiser F (2020) Growing up in a changing climate: how temperature affects the development of morphological, behavioural and physiological traits of a marsupials mammal. Frontiers in Physiology 11:49
• Hume T, Geiser F, CurrieSE, KörtnerG, StawskiC (2019) Responding to the weather: energy budgeting by a small mammal in the wild. Current Zoology 66: 15-20, zoz023. doi: 10.1093/cz/zoz023
• Renninger M, Sprau L, Geiser F (2020) White mouse pups can use torpor from energy conservation. Journal of Comparative Physiology B 190: 253-259
• Geiser F (2020) Seasonal expression of avian and mammalian daily torpor and hibernation: not a simple summer-winter affair. Frontiers in Physiology 11: 436
• Scheun J, Geiser F, Ganswindt A, Nowack J (2020) Non-invasive evaluation of stress hormone responses in a captive population of sugar gliders (Petaurus breviceps). Australian Mammalogy 42: 176-184
• Geiser F, Willis CKR, Brigham RM (2020) No evidence for hibernation in rockwrens. Journal of Experimental Biology 223: doi:10.1242/jeb.230524
• Cooper CE, Withers PC, Körtner G, Geiser F (2020) Does control of insensible water loss by two species of mesic parrot have a thermoregulatory role? Journal of Experimental Biology 223: jeb229930. doi:10.1242/jeb.229930
• Aharon-Rotman Y, Körtner G, Wacker CB, Geiser F (2020) Do small precocial birds enter torpor to conserve energy during development? Journal of Experimental Biology: 223: jeb231761. doi:10.1242/jeb.231761

2019

• Geiser F et al. (2019) Hibernation and daily torpor in Australian and New Zealand bats: does the climate zone matter?. Australian Journal of Zoology, 2019, 67, 316–330.
• Geiser F (2019) Hibernation, daily torpor and estivation in mammals and birds: behavioural aspects. Encyclopedia of Animal Behaviour 2^nd Edition. https.//doi.org/10.1016/B978-0-12-813251-7.20755-4
• Geiser F, Wen J, Sukhchuluun G, Chi QS, Wang DH (2019) Precocious torpor in an altricial mammal and the functional implications of heterothermy during development. Frontiers in Physiology 10: 469
• Geiser F (2019) Frequent nocturnal torpor in a free-ranging Australian honeyeater, the noisy miner. The Science of Nature 106:28
• KörtnerG, Trachtenberg A, Geiser F (2019) Does aridity affect spacial ecology? Scaling of home range size in small carnivorous marsupials. The Science of Nature 106: 42
• Archer M, BatesH, Hand SJ, Evans T, Broome L, McAllan BM, Geiser F, Jackson S, Myers T, Gillespie A, Palmer C, Hawke T, Horn AM (2019) The Burramys Project: a conservationist’s reach should exceed history’s grasp, or what’s the fossil record for? Philosophical Transactions B 374: 20190221
• Parker CA, Geiser F, Stawski C (2019) Thermal physiology and activity in relation to reproductive status and sex in a free-ranging semelparous marsupial. Conservation Physiology 7(1): coz073
• Turbill C, Körtner, G, Geiser F (2019) Roost use and thermoregulation by female Australian long-eared bats (Nyctophilus geoffroyi and N. gouldi) during pregnancy and lactation. Australian Journal of Zoology, 2019, 67, 339–345.

2018

2017

• Turner JM, Geiser F (2017) The influence of natural photoperiod on seasonal torpor expression of two opportunistic marsupial hibernators. Journal of Comparative Physiology B 187: 375-383. https://dx.doi.org/10.1007/s00360-016-1031-z
• Matthews JK, Stawski C, Körtner G, Geiser F (2017) Torpor and basking after a severe wildfire: mammalian survival strategies in a scorched landscape. Journal of Comparative Physiology B 187: 385-393. http://dx.doi.org/10.1007/s00360-016-1039-4
• Stawski C, Nowack N, Körtner G, Geiser F (2017) A new cue for torpor induction: charcoal, ash and smoke. Journal of Experimental Biology 220: 220-226. Editor’s Choice. http://dx.doi.org/10.1242/jeb.146548
• Wacker CB, McAllan BM, Körtner G, Geiser F (2017) The role of basking in the development of endothermy and torpor in a marsupial. Journal of Comparative Physiology B 187: 1029-1038
• Nowack J, Stawski C, Geiser F (2017) More functions of torpor and their roles in a changing world. Journal of Comparative Physiology B 187: 889-897
• Stawski C, Hume T, Körtner G, Currie SE, Nowack J, Geiser F (2017) Post-fire recovery of torpor and activity patterns of a small mammal. Biology Letters: 20170036
• Swoap SJ, Körtner G, Geiser F (2017) Heart rate dynamics in a marsupial hibernator. Journal of Experimental Biology 220: 2939-2946
• Geiser F, Stawski C, Wacker CB, Nowack J (2017) Phoenix from the ashes: fire, torpor and the evolution of endothermy. Frontiers in Physiology 8: 842

2016

• Jastroch M, Giroud S, Barrett P, Geiser F, Heldmaier G, Herwig A (2016) Seasonal control of mammalian energy balance: recent advances in the understanding of daily torpor and hibernation. Journal of Neuroendocrinology 28: http://dx.doi.org/10.1111/jne.12437
• Bondarenco A, Körtner G, Geiser F (2016) How to keep cool in a hot desert: torpor in two species of free-ranging bats in summer. Temperature 3: 476-483. http://dx.doi.org/10.1080/23328940.2016.1214334
• Nowack J, Geiser F (2016) Friends with benefits: the role of huddling in mixed groups of torpid and normothermic individuals. Journal of Experimental Biology 219: 590-596. http://dx.doi.org/10.1242/jeb.128926
• Stawski C, Körtner G, Nowack J, Geiser F (2016) Phenotypic plasticity of post-fire activity and thermal biology of a small mammal. Physiology and Behavior 159: 104-111. http://dx.doi.org/10.1016/j.physbeh.2016.03.009
• Nowack J, Cooper CE, Geiser F (2016) Cool echidnas survive the fire. Proceedings of the Royal Society B 283: 20160382. http://dx.doi.org/10.1098/rspb.2016.0382
• Pavey CR, Burwell CJ, Körtner G, Geiser F (2016) Why is the kaluta, Dasykaluta rosamondae, diurnally active in winter: foraging advantages or predator avoidance in arid northern Australia? Journal of Arid Environments 133: 25-28. http://dx.doi.org/10.1016/j.jaridenv.2016.05.006
• Cooper CE, Withers PC, Hardie A, Geiser F (2016) Marsupials don’t adjust their thermal energetics for life in an alpine environment. Temperature 3: 84-498. http://dx.doi.org/10.1080/23328940.2016.1171280
• Geiser F (2016) Conserving energy during hibernation. Journal of Experimental Biology 219: 2086-2087. JEB Classics Invited. http://dx.doi.org/10.1242/jeb.129171
• Geiser F, Gasch K, Bieber C, Stalder GL, Gerritsmann H, Ruf T (2016) Basking hamsters reduce resting metabolism, body temperature and energy costs during rewarming from torpor. Journal of Experimental Biology. 219: 2166-2172. http://dx.doi.org/10.1242/jeb.137828
• Doty AC, Stawski C, Law BS, Geiser F (2016) Post-wildfire physiological ecology of an Australian microbat. Journal of Comparative Physiology B 186: 937-946. http://dx.doi.org/10.1007/s00360-016-1003-3
• Chi QS, Wan XR, Geiser F, Wang DH (2016) Fasting-induced daily torpor in desert hamsters (Phodopus roborovskii). Comparative Physiology and Biochemistry A 199: 71-77. http://dx.doi.org/10.1016/j.cbpa.2016.05.019
• Körtner G, Riek A, Pavey CR, Geiser F (2016) Activity patterns and torpor in two free-ranging carnivorous marsupials in arid Australia in relation to precipitation, reproduction and ground cover. Journal of Mammalogy. http://dx.doi.org/10.1093/jmammal/gyw113
• Wacker CB, McAllan BM, Körtner G, Geiser F (2016) The functional requirements of mammalian hair: a compromise between crypsis and thermoregulation? The Science of Nature 103: 53. http://dx.doi.org/10.1007/s00114-016-1376-x
• Nowack J, Delesalle M, Stawski C, Geiser F (2016) Can hibernators sense and evade fires? Olfactory acuity and locomotor performance during deep torpor. The Science of Nature 103: 73. http://dx.doi.org/10.1007/s00114-016-1396-6
• Doty AC, Stawski C, Currie SE, Geiser F (2016) Black or white? Physiological implications of roost colour and choice in a microbat. Journal of Thermal Biology 60: 162-170. http://dx.doi.org/10.1016/j.jtherbio.2016.07.015

2015

• Nowack J, Rojas AD, Körtner G, Geiser F (2015) Snoozing through the storm: torpor use during a natural disaster. Scientific Reports 5: 11243, DOI: 10.1038/srep11243
• Stawski C, Körtner G, Nowack J, Geiser F (2015) The importance of mammalian torpor for survival in a post-fire landscape. Biology Letters 11: 20150134
• Currie SE, Noy K, Geiser F (2015) Passive rewarming from torpor in hibernating bats: minimizing metabolic costs and cardiac demands. American Journal of Physiology 308: R34-R41
• Ruf T, Geiser F (2015) Daily torpor and hibernation in birds and mammals. Biological Reviews 90: 891-926
• Doty A, Stawski C, Nowack J, Bondarenco A, Geiser F (2015) Increased lyrebird presence in a post-fire landscape. Australian Journal of Zoology 63: 9-11
• Yuan L, Geiser F, Lin B, Sun H, Chen J, Zhang S (2015) Down but not out: the role of microRNAs in hibernating bats. PLoS ONE 10(8): e0135064
• Currie SE, Körtner G, Geiser F (2015) Measuring subcutaneous temperature and differential rates of rewarming from hibernation and daily torpor in two species of bats. Comparative Physiology and Biochemistry A 190: 26-31
• Stawski C, Matthews JK, Körtner G, Geiser F (2015) Physiological and behavioural responses of a small heterothermic mammal to fire stimuli. Physiology and Behavior 151: 617-622

2014

• 
  Bieber C, Lebl K, Stalder G, Geiser F, Ruf T (2014) Body mass dependent use of hibernation: why not prolong the active season, if they can? Functional Ecology 28: 167-177
• Riek A, Geiser F (2014) Heterothermy in pouched mammals – a review. Journal of Zoology 292: 74-85 Invited Review
• Stawski C, Willis CKR, Geiser F (2014) The importance of temporal heterothermy in bats. Journal of Zoology 292: 86-100 Invited Review
• Bayat S, Geiser F, Kristiansen P, Wilson S (2014) Organic contaminants in bats: trends and new issues. Environment International 63: 40-52
• Rojas AD, Körtner G, Geiser F (2014) Torpor in free-ranging antechinus: does it increase fitness? Naturwissenschaften 101: 105-114
• Drury RL, Geiser F (2014) Activity patterns and roosting of the blossom-bat Syconycteris australis. Australian Mammalogy 36: 29-34
• Currie SE, Körtner G, Geiser F (2014) Heart rate as a predictor of metabolic rate in heterothermic bats. Journal of Experimental Biology 217: 1519-1524
• Bondarenco A, Körtner G, Geiser F (2014) Hot bats: extreme thermal tolerance in a desert heat wave. Naturwissenschaften 101: 679-685
• McAllan BM, Geiser F (2014) Torpor during reproduction in mammals and birds: dealing with an energetic conundrum. Integrative and Comparative Biology 54: 516-532. Invited Review
• Geiser F, Currie SE, O’Shea KA, Hiebert SM (2014) Torpor and hypothermia: reversed hysteresis of metabolic rate and body temperature. American Journal of Physiology 307: R1324-R1329

2013

• Bondarenco A, Körtner G, Geiser F (2013) Some like it cold: summer torpor by freetail bats in the Australian arid zone. Journal of Comparative Physiology B 183: 1113-1122
• Geiser F (2013) Hibernation. Invited Primer. Current Biology 23: R188-R193
• Riek A, Geiser F (2013) Allometry of thermal variables in mammals: consequences of body size and phylogeny. Biological Reviews 88: 564-572
• Geiser F, Martin GM (2013) Torpor in the Patagonian opossum (Lestodelphys halli): implications for the evolution of daily torpor and hibernation. Naturwissenschaften 100: 975-981.
• Geiser F, Klingenspor M, McAllan BM (2013) A functional nexus between photoperiod acclimation, torpor expression and somatic fatty acid composition in a heterothermic mammal. PLoS ONE 8(5): e63803

2012

• McAllan BM, Feay N, Bradley AJ, Geiser F (2012) The influence of reproductive hormones on the torpor patterns of the marsupial Sminthopsis macroura: Bet-hedging in an unpredictable environment. General and Comparative Endocrinology 179: 265-276
• Turner JM, Warnecke L, Körtner G, Geiser F (2012) Opportunistic hibernation by a free-ranging marsupial. Journal of Zoology 286: 277-284
• Wacker CB, Rojas AD, Geiser F (2012) The use of small subcutaneous transponders for quantifying thermal biology and torpor in small mammals. Journal of Thermal Biology 37: 250-254
• Warnecke L, Körtner G, Burwell CJ, Turner JM, Geiser F (2012) Short-term movement patterns and diet of small dasyurid marsupials in semi-arid Australia. Australian Mammalogy 34: 49-54
• Riek A, Geiser F (2012) Developmental phenotypic plasticity in a marsupial mammal. Journal of Experimental Biology 215: 1552-1558
• Turner JM, Körtner G, Warnecke L, Geiser F (2012) Summer and winter torpor by a free-ranging marsupial. Comparative Biochemistry and Physiology A 162: 274-280
• Doucette LI, Brigham RM, Pavey CR, Geiser F (2012) Prey availability affects daily torpor by free-ranging Australian owlet-nightjars (Aegotheles cristatus). Oecologia 169: 361-372
• Brigham RM, Geiser F (2012) Do red squirrels (Tamiasciurus hudsonicus) use daily torpor in winter? Ecoscience 19: 132-127
• Rojas AD, Körtner G, Geiser F (2012) Cool running: locomotor performance at low body temperature in mammals. Biology Letters 8: 868-870
• Stawski C, Geiser F (2012) Will temperature effects or phenotypic plasticity determine the thermal response of a heterothermic tropical bat to climate change? PLoS ONE 7 (7): e40278
• Geiser F, Brigham RM (2012) The other functions of torpor. In: Ruf T, Bieber C, Arnold W, Millesi E (eds) Living in a seasonal world. Springer Verlag, Berlin, Heidelberg, New York. Pp 109-121. DOI: 10.1007/978-3-642-28678-0_10
• Brigham RM, McKechnie AE, Doucette LI, Geiser F (2012) Heterothermy in caprimulgid birds: a review of inter- and intraspecific variation in free-ranging populations. In: Ruf T, Bieber C, Arnold W, Millesi E (eds) Living in a seasonal world. Springer Verlag, Berlin, Heidelberg, New York. Pp. 175-187. DOI: 10.1007/978-3-642-28678-0_16
• Broome L, Archer M, Bates H, Shi H, Geiser F, McAllan M, Heinze D, Hand S, Evans T, Jackson S (2012) A brief review of the life history of, and threats to, Burramys parvus with a prehistory-based proposal for ensuring it has a future. In: Lunney D, Hutchings P (eds) Wildlife and Climate Change. Royal Zoological Society of NSW, Mosman. pp 114-126

2011

• Geiser F, Stawski C, Bondarenco A, Pavey CR (2011) Torpor and activity in a free-ranging tropical bat: implications for the distribution and conservation of mammals? Naturwissenschaften 98: 447-452
• Körtner G, Geiser F (2011) Activity and torpor in two sympatric Australian desert marsupials. Journal of Zoology 283: 249-256
• Geiser F, Mzilikazi N (2011) Does torpor in elephant shrews differ from that of other heterothermic mammals? Journal of Mammalogy 92: 452-459
• Geiser F, Stawski C (2011) Hibernation and torpor in tropical and subtropical bats in relation to energetics, extinctions and the evolution of endothermy. Integrative and Comparative Biology 51: 337-348
• Stawski C, Geiser F (2011) Do season and distribution affect thermal energetic of a hibernating bat endemic to the tropics and subtropics? American Journal of Physiology 301: R542-R547
• Brigham RM, Willis CKR, Geiser F, Mzilikazi N (2011) Baby in the bathwater: Should we abandon the use of body temperature thresholds to quantify expression of torpor? Journal of Thermal Biology 36: 376-379
• Doucette LI, Brigham RM, Pavey CR, Geiser F (2011) Roost type influences torpor use by Australian owlet-nightjars. Naturwissenschaften 98: 845-854
• Geiser F (2011) Hibernation: Endotherms. Encyclopedia of Life Sciences, John Wiley & Sons, Ltd: Chichester. Advanced article. DOI: 10.1002/97804700159

2010

• Geiser F (2010) Aestivation in mammals and birds. Chapter 5 In: Navas CA, Carvalho JE (eds) Aestivation: Molecular and Physiological Aspects. Springer Verlag, Berlin Heidelberg. Invited Review pp 95-111
• Stawski C, Geiser F (2010) Fat and fed: frequent use of summer torpor in a subtropical bat. Naturwissenschaften 97: 29-35
• Quin DG, Riek A, Green S, Smith AP, Geiser F (2010) Seasonally constant field metabolic rates in free-ranging sugar gliders (Petaurus breviceps). Comparative Biochemistry and Physiology A 155: 336-340
• Warnecke L, Geiser F (2010) The energetics of basking behaviour and torpor in a small marsupial exposed to simulated natural conditions. Journal of Comparative Physiology B 180: 437-445
• Stawski C, Geiser F (2010) Seasonality of torpor patterns and physiological variables of a free-ranging subtropical bat. Journal of Experimental Biology 213: 393-399
• Geiser F, Körtner G (2010) Hibernation and daily torpor in Australian mammals. Australian Zoologist 35: 204-215
• Körtner G, Rojas AD, Geiser F (2010) Thermal biology, torpor use and activity patterns of a small marsupial from a tropical desert: sexual differences. Journal of Comparative Physiology B 180: 869-876
• Geiser F (2010) Hibernation, daily torpor and aestivation in mammals and birds; behavioral aspects. In: Moore J, Breed M (eds). Encyclopedia of Animal Behaviour. Academic Press/Elsevier. In Press (accepted Sept. 2009). Invited Review
• Riek A, Körtner G, Geiser F (2010) Thermobiology, energetics and activity patterns of the Eastern tube-nosed bat (Nyctimene robinsoni) in the Australian tropics: effect of temperature and lunar cycle. Journal of Experimental Biology. In press
• Warnecke L, Cooper CE, Geiser F, Withers PC (2010) Environmental physiology of a small marsupial inhabiting arid floodplains. Comparative Biochemistry and Physiology A 157: 73-78
• Rojas AD, Körtner G, Geiser F (2010) Do implanted transmitters affect maximum running speed of two small marsupials? Journal of Mammalogy 91: 1360-1364
• Warnecke L, Schleucher E, Geiser F (2010) Basking behaviour in relation to energy use and food availability in one of the smallest marsupials. Physiology and Behavior 101: 389-393

2009

• Pavey CR, Burwell CJ, Körtner G, Geiser F (2009) Vertebrate diet decreases winter torpor use in a desert marsupial. Naturwissenschaften 96: 679-683.
• Geiser F, Turbill C (2009) Hibernation and daily torpor minimize mammalian extinctions.  Naturwissenschaften, 1235-1240.
• Körtner G, Geiser F (2009) The key to winter survival: daily torpor in a small arid zone marsupial. Naturwissenschaften 96: 525-530.
• Stawski C, Turbill C, Geiser F (2009) Hibernation by a free-ranging subtropical bat (Nyctophilus bifax). Journal of Comparative Physiology B 179: 433-441
• Namekata S, Geiser F (2009) Effects of nest use, huddling, and torpor on thermal energetics of eastern pygmy-possums. Australian Mammalogy 31: 31-34.
• Warnecke L, Geiser F (2009) Basking behaviour and torpor use in free-ranging Planigale gilesi. Australian Journal of Zoology 57: 373-375

2008

• Warnecke L, Turner JM, Geiser F (2008) Torpor and basking in a small arid zone marsupial. Naturwissenschaften 95: 73-78
• Cooper CE, Geiser F (2008) The "minimal boundary curve for endothermy" as a predictor of heterothermy in mammals and birds: a review. Journal of Comparative Physiology B 178: 1-8
• Geiser F (2008) Ontogeny and phylogeny of endothermy and torpor in mammals and birds. Comparative Biochemistry and Physiology A 150: 176-180
• Körtner G, Pavey CR, Geiser F (2008) Thermal biology, torpor and activity in free-living mulgaras in arid zone Australia during the winter reproductive season. Physiological and Biochemical Zoology 81: 442-451
• Cooper CE, Körtner G, Brigham RM, Geiser F (2008) Body temperature, and activity patterns of free-living laughing kookaburras: the largest kingfisher is heterothermic. Condor 110: 110-115
• Turbill C, Geiser F (2008) Hibernation by tree-roosting bats. Journal of Comparative Physiology B 178: 597-605
• Körtner G, Pavey CR, Geiser F (2008) Ecological physiology of a small arid zone marsupial in relation to its thermal environment. In: Lovegrove BG, McKechnie AE (eds). Hypometabolism in animals: torpor, hibernation and cryobiology. 13th International Hibernation Symposium. University of KwaZulu-Natal, Pietermaritzburg. pp 263-270
• Geiser F, Christian N, Cooper CE, Körtner G, McAllan BM, Pavey CR, Turner JM, Warnecke L, Willis CKR, Brigham RM (2008) Torpor in marsupials: recent advances. In: Lovegrove BG, McKechnie AE (eds). Hypometabolism in animals: torpor, hibernation and cryobiology. 13th International Hibernation Symposium. University of KwaZulu-Natal, Pietermaritzburg. pp 297-306
• Stawski C, Turbill C, Geiser F (2008) Prolonged torpor during winter in a free-ranging bat from subtropical Australia. In: Lovegrove BG, McKechnie AE (eds). Hypometabolism in animals: torpor, hibernation and cryobiology. 13th International Hibernation Symposium. University of KwaZulu-Natal, Pietermaritzburg. pp 353-360
• Doucette LI, Geiser F (2008) Seasonal variation in thermal energetics of the Australian owlet-nightjar (Aegotheles cristatus). Comparative Biochemistry and Physiology A. 151: 615-620
• Pavey CR, Geiser F (2008) Basking and diurnal foraging in the dasyurid marsupial (Pseudantechinus macdonnellensis). Australian Journal of Zoology. 56: 129-135
• Turbill C, Körtner G, Geiser F (2008) Timing of the daily temperature cycle affects the critical arousal temperature and energy expenditure of the lesser long-eared bat. Journal of Experimental Biology. 211: 3871-3878

2007

• Geiser F, McAllan BM, Kenagy GJ, Hiebert SM (2007) Photoperiod affects daily torpor and tissue fatty acid composition in deer mice. Naturwissenschaften 94: 319-325
• Geiser F, Holloway JC, Körtner G (2007) Thermal biology, torpor and behaviour in sugar gliders: a laboratory-field comparison. Journal of Comparative Physiology B 177: 495-501
• Körtner G, Pavey CR, Geiser F (2007) Spatial ecology of the mulgara (Marsupialia: Dasyuridae) in arid Australia: impact of fire history. Journal of Zoology 273: 350-357
• Christian N, Geiser F (2007) To use or not to use torpor? Activity and body temperature as predictors. Naturwissenschaften 94: 483-487
• Geiser F (2007) Yearlong hibernation in a marsupial mammal. Naturwissenschaften 94: 941-944
• Maddocks TA, Geiser F (2007) Heterothermy in an Australian passerine the dusky woodswallow (Artamus cyanopterus). Journal of Ornithology 148: 571-577
• Geiser F, Pavey CR (2007) Basking and torpor in a rock-dwelling desert marsupial: survival strategies in a resource-poor environment. Journal of Comparative Physiology B 177: in press

2006

• Geiser F, Westman W, McAllan BM, Brigham RM (2006) Development of thermoregulation and torpor in a marsupial: energetic and evolutionary implications. Journal of Comparative Physiology B 176: 107-116
• Turbill C, Geiser F (2006) Thermal biology of pregnant and lactating female and male long-eared bats, Nyctophilus geoffroyi and N. gouldi. Journal of Comparative Physiology B 176: 165-172
• Willis CKR, Brigham RM, Geiser F (2006) Deep, prolonged torpor by pregnant, free-ranging bats. Naturwissenschaften 93: 80-83
• Geiser F (2006) Energetics, thermal biology, and torpor in Australian bats. In: Zubaid A, McCracken GF, Kunz TH (eds) Functional and Evolutionary Ecology of Bats. Oxford University Press INC. USA. pp 5-22. Invited Review
• McAllan BM, Geiser (2006) Photoperiod and the timing of reproduction in Antechinus flavipes (Dasyuridae: Marsupialia). Mammalian Biology 71: 129-138
• Geiser F, Körtner G, Maddocks TA, Brigham MR (2006) Torpor in Australian birds. Proceedings, 23rd International Ornithological Congress, Acta Zoologica Sinica. 525: 401-404
• Brigham RM, Woods CP, Lane JE, Fletcher QE, Geiser F (2006) Ecological correlates of torpor use among five caprimulgiform birds. Proceedings, 23 rd International Ornithological Congress, Acta Zoologica Sinica. In press. 525: 405-408

2005

• Geiser F, McAllan BM, BrighamRM (2005) Daily torpor in a pregnant dunnart (Sminthopsis macroura Dasyuridae: Marsupialia). Mammalian Biology 70: 117-121
• Cooper CE, McAllan BM, Geiser F (2005) Effect of torpor on the water economy of an arid-zone marsupial, the striped-faced dunnart (Sminthopsis macroura). Journal of Comparative Physiology B 175: 323-328
• Burwell CJ, Geiser F, May K, Barritt M, Pavey CR. Additional records of prey of the fat-tailed false antechinus Pseudantechinus macdonnellensis from central Australia. Australian Mammalogy 27: 227-229
• Willis CKR, Turbill C, Geiser F (2005) Torpor and thermal energetics in a tiny Australian vespertilionid, the little forest bat (Vespadelus vulturnus). Journal of Comparative Physiology B 175: 479-486
• Willis CKR, Goldzieher A, Geiser F (2005) A non-invasive method for quantifying patterns of torpor and activity under semi-natural conditions. Journal of Thermal Biology 30: 551-556
• Geiser F, Law BS, Körtner G (2005) Daily torpor in relation to photoperiod in a subtropical blossom-bat, Syconycteris australis (Megachiroptera). Journal of Thermal Biology 30: 574-579

2004

• Geiser F (2004) Metabolic rate and body temperature reduction during hibernation and daily torpor. Annual Review of Physiology 66: 239-274 Invited Review
• Westman W, Geiser F (2004) The effect of metabolic fuel availability on thermoregulation and torpor in a marsupial hibernator. Journal of Comparative Physiology B 174: 49-57
• Geiser F, Drury RL, Körtner G, Turbill C, Pavey CR, Brigham RM (2004) Passive rewarming from torpor in mammals and birds: energetic, ecological and evolutionary implications. In: Barnes BM, Carey HV (eds). Life in the Cold: Evolution, Mechanisms, Adaptation, and Application. Twelfth International Hibernation Symposium. Biological Papers of the University of Alaska #27. Institute of Arctic Biology, University of Alaska, Fairbanks. pp. 51-62 Invited Review
• Geiser F (2004) Metabolic rate reduction during hibernation and daily torpor. In: Barnes BM, Carey HV (eds). Life in the Cold: Evolution, Mechanisms, Adaptation, and Application. Twelfth International Hibernation Symposium. Biological Papers of the University of Alaska #27. Institute of Arctic Biology, University of Alaska, Fairbanks. pp 175-184
• Geiser F, Körtner G (2004) Thermal biology, energetics and torpor in the possums and gliders. Possums and Gliders. pp 186-198. Invited Review
• Westman W, Geiser F (2004) Captive breeding, growth, and development of thermoregulation in the eastern pygmy-possum (Cercartetus nanus). Possums and Gliders. pp 222-229
• Geiser F (2004) The role of torpor in the life of arid zone mammals. Australian Mammalogy 26:125-134. Invited Review

2003

• Pavey CR, Goodship N, Geiser F (2003) Home range and spatial organization of the rock-dwelling carnivorous marsupial, Pseudantechinus macdonnellensis. Wildlife Research 30: 135-142
• Geiser F, Drury RL (2003) Radiant heat affects thermoregulation and energy expenditure during rewarming from torpor. Journal of Comparative Physiology B 173: 55-60
• Turbill C, Law BS, Geiser F (2003) Summer torpor in a free-ranging bat from subtropical Australia. Journal of Thermal Biology 28: 223-226
• Geiser F (2003) Thermal biology and energetics of carnivorous marsupials. In: Jones M, Dickman C, Archer M (eds) Predators with pouches: the biology of carnivorous marsupials. CSIRO publishers. pp 234-249 Invited Review
• Geiser F, Drury RL, McAllan BM, Wang D-H (2003) Effects of temperature acclimation on maximum heat production, thermal tolerance, and torpor in a marsupial mammal. Journal of Comparative Physiology B 173: 437-442
• Turbill C, Körtner G, Geiser F (2003) Natural use of torpor by a small, tree-roosting bat during summer. Physiological and Biochemical Zoology 76: 868-876

2002

• Westman W, Körtner G, Geiser F (2002) Developmental thermoenergetics of the dasyurid marsupial Antechinus stuartii. Journal of Mammalogy 83: 81-90
• Geiser F, Goodship N, Pavey CR (2002) Was basking important in the evolution of mammalian endothermy? Naturwissenschaften 89: 412-414

2001

• Geiser F (2001) Hibernation. 2000-word article. Microsoft Encarta 2001 Invited
• Holloway JC, Geiser F (2001) Effects of helium/oxygen and temperature on aerobic metabolism in the marsupial sugar glider, Petaurus breviceps. Physiological and Biochemical Zoology 74: 219-225
• Geiser F, Ferguson C (2001) Intraspecific differences in behaviour and physiology: effects of captive breeding on patterns of torpor in feathertail gliders. Journal of Comparative Physiology B 171: 569-576
• Geiser F, Körtner G, Law BS (2001) Daily torpor in a pregnant common blossom-bat (Syconycteris australis: Megachiroptera). Australian Mammalogy 23: 53-56
• Holloway JC, Geiser F (2001) Seasonal changes in the thermoenergetics of the marsupial sugar glider, Petaurus breviceps. Journal of Comparative Physiology B 171: 643-650
• Körtner G, Brigham RM, Geiser F (2001) Torpor in free-ranging tawny frogmouths (Podargus strigoides). Physiological and Biochemical Zoology 74: 789-797
• Geiser F (2001) Hibernation: Endotherms. Encyclopedia of Life Sciences, Nature Publishing Group. 4000-word article Invited Review
• Falkenstein F, Körtner G, Watson K, Geiser F (2001) Dietary fats and body lipid composition in relation to hibernation in free-ranging echidnas. Journal of Comparative Physiology B 171: 189-194

2000

• Geiser F, Brigham RM (2000) Torpor, thermal biology, and energetics in Australian long-eared bats ( Nyctophilus). Journal of Comparative Physiology B 170: 153-162
• Körtner G, Geiser F (2000) The temporal organisation of daily torpor and hibernation: circadian and circannual rhythms. Chronobiology International 17: 103-128 Invited Review
• Körtner G, Geiser F (2000) Torpor and activity patterns in free-ranging sugar gliders Petaurus breviceps (Marsupialia). Oecologia 123: 350-357
• Maddocks TA, Geiser F (2000) Seasonal variations in thermal energetics of Australian silvereyes (Zosterops lateralis). Journal of Zoology (London) 252: 327-333
• Holloway JC, Geiser F (2000) Development of thermoregulation in the sugar glider, Petaurus breviceps (Marsupialia: Petauridae). Journal of Zoology (London) 252: 389-397
• Brigham RM, Körtner G, Maddocks TA, Geiser F (2000) Seasonal use of torpor by free-ranging Australian owlet-nightjars (Aegotheles cristatus). Physiological and Biochemical Zoology 73: 613-620
• Körtner G, Brigham RM, Geiser F (2000) Winter torpor in a large bird. Nature 407: 318
• Geiser F, Holloway JC, Körtner G, Maddocks TA, Turbill C, Brigham MR (2000) Do patterns of torpor differ between free-ranging and captive mammals and birds? In: Heldmaier G, Klingenspor M (eds) Life in the Cold: Eleventh International Hibernation Symposium, Springer Verlag, Berlin. pp 95-102 Invited Paper
• Körtner G, Geiser F (2000) Weather patterns and daily torpor in free-ranging animals. In: Heldmaier G, Klingenspor M (eds) Life in the Cold: Eleventh International Hibernation Symposium, Springer Verlag, Berlin. pp 103-109
• Song X, Körtner G, Geiser F (2000) Temperature selection and energy expenditure in the marsupial hibernator Cercartetus nanus. In: Heldmaier G, Klingenspor M (eds) Life in the Cold: Eleventh International Hibernation Symposium, Springer Verlag, Berlin. pp 119-126
• Geiser F, Stapp P (2000) Energetics and thermal biology of gliding mammals. In: Goldingay R, Scheibe JS (eds). Biology of Gliding Mammals. Filander Verlag, Erlangen: pp 149-166 Invited Review

1999

• Lovegrove BG, Körtner G, Geiser F (1999) The energetic cost of arousal from torpor in the marsupial Sminthopsis macroura: benefits of summer ambient temperature cycles. Journal of Comparative Physiology B 169: 11-18
• Körtner G, Geiser F (1999) Nesting behaviour and juvenile development of the tawny frogmouth Podargus strigoides. Emu 99: 212-217
• Maddocks TA, Geiser F (1999) The thermoregulatory limits of an Australian passerine the silvereye Zosterops lateralis. Journal of Thermal Biology 24: 43-50
• Brigham RM, Gutsell RCA, Wiacek RS, Geiser F (1999) Foraging behaviour in relation to the lunar cycle by Australian owlet-nightjars Aegotheles cristatus. Emu 99: 253-261
• Körtner G, Geiser F (1999) Roosting behaviour of the tawny frogmouth ( Podargus strigoides). Journal of Zoology (London) 248: 501-507
• Geiser F, Coburn DK (1999) Field metabolic rates and water uptake in the blossom-bat Syconycteris australis (Megachiroptera). Journal of Comparative Physiology B 169: 133-138
• Geiser F (1999) Kälteanpassung. In: Ganslosser U (ed) Spitzenleistungen, Die unglaublichen Fähigkeiten der Tiere. Filander Verlag, Fürth. pp 275-297

1998

• Körtner G, Geiser F (1998) Ecology of natural hibernation in the marsupial mountain pygmy-possum (Burramys parvus). Oecologia 113: 170-178
• Coburn DK, Geiser F (1998) Seasonal changes in energetics and torpor patterns in the subtropical blossom-bat Syconycteris australis (Megachiroptera). Oecologia 113: 467-473
• Bartels W, Law BS, Geiser F (1998) Daily torpor and energetics in a tropical mammal the northern blossom-bat Macroglossus minimus (Megachiroptera). Journal of Comparative Physiology B 168: 233-239
• Brigham RM, Debus SJS, Geiser F (1998) Cavity selection for roosting and nesting, and roosting ecology of forest-dwelling Australian owlet-nightjars ( Aegotheles cristatus). Australian Journal of Ecology 23: 424-429
• Geiser F (1998) Cool bats. Nature Australia 26: 56-63 Invited
• Brigham RM, Geiser F (1998) Seasonal activity patterns of Nyctophilus bats based on mist-net captures. Australian Mammalogy 20: 349-352
• Song X, Körtner G, Geiser F (1998) Temperature selection and use of torpor by the marsupial Sminthopsis macroura. Physiology and Behavior 64: 675-682
• Geiser F (1998) Evolution of daily torpor and hibernation in birds and mammals: importance of body size. Clinical and Experimental Pharmacology and Physiology 25: 736-740 Invited
• Geiser F, Körtner G, Schmidt I (1998) Leptin increases energy expenditure of a marsupial by inhibition of daily torpor. American Journal of Physiology 275: R1627-R1632
• Körtner G, Song X, Geiser F (1998) Rhythmicity of torpor in a marsupial hibernator, the mountain pygmy-possum (Burramys parvus), under natural and laboratory conditions. Journal of Comparative Physiology B 168: 631-638

1997

• Maddocks T, Geiser F (1997) Energetics, thermoregulation and nocturnal hypothermia in Australian silvereyes. Condor 99: 104-112
• Song X, Geiser F (1997) Daily torpor and energy expenditure in Sminthopsis macroura: interactions between food and water availability and temperature. Physiological Zoology 70: 331-337
• Geiser F, Kenagy GJ, Wingfield JC (1997) Dietary cholesterol enhances torpor in a rodent hibernator. Journal of Comparative Physiology B 167: 416-422
• Thomas DW, Geiser F (1997) Periodic arousal in hibernating mammals: is evaporative water loss involved? Functional Ecology 11: 585-591
• Brigham RM, Geiser F (1997) Breeding biology of Australian owlet-nightjars Aegotheles cristatus in eucalypt woodland. Emu 92: 316-321
• Song X, Körtner G, Geiser F (1997) Thermal relations of metabolic rate reduction in a hibernating marsupial. American Journal of Physiology 273: R2097-R2104

1996

• Geiser F, Coburn DK, Körtner G, Law BS (1996) Thermoregulation, energy metabolism, and torpor in blossom-bats, Syconycteris australis (Megachiroptera). Journal of Zoology (London) 239: 583-590
• Geiser F, Song X, Körtner G (1996) The effect of He-O2 exposure on metabolic rate, thermoregulation and thermal conductance during normothermia and daily torpor. Journal of Comparative Physiology B 166: 190-196
• Holloway JC, Geiser F (1996) Reproductive status and torpor of the marsupial Sminthopsis crassicaudata: effect of photoperiod. Journal of Thermal Biology 21: 373-380
• Körtner G, Geiser F (1996) Hibernation of mountain pygmy-possums ( Burramys parvus) in the Australian alps. In: Geiser F, Hulbert AJ, Nicol SC (eds.) Adaptations to the Cold: Tenth International Hibernation Symposium. University of New England Press, Armidale. pp 31-38
• Coburn DK, Geiser F (1996) Daily torpor and energy savings in a subtropical blossom-bat, Syconycteris australis (Megachiroptera). In: Geiser F, Hulbert AJ, Nicol SC (eds.) Adaptations to the Cold: Tenth International Hibernation Symposium. University of New England Press, Armidale. pp 39-46
• Song X, Körtner G, Geiser F (1996) Interrelations between metabolic rate and body temperature during entry into daily torpor in Sminthopsis macroura. In: Geiser F, Hulbert AJ, Nicol SC (eds.) Adaptations to the Cold: Tenth International Hibernation Symposium. University of New England Press, Armidale. pp 63-70
• Geiser F (1996) Torpor in reproductive endotherms. In: Geiser F, Hulbert AJ, Nicol SC (eds.) Adaptations to the Cold: Tenth International Hibernation Symposium. University of New England Press, Armidale. pp 81-86
• Holloway JC, Geiser F (1996) Effect of photoperiod on torpor and activity of Sminthopsis crassicaudata (Marsupialia). In: Geiser F, Hulbert AJ, Nicol SC (eds.) Adaptations to the Cold: Tenth International Hibernation Symposium. University of New England Press, Armidale. pp 95-102
• Maddocks TA, Geiser F (1996) Nocturnal hypothermia in silvereyes ( Zosterops lateralis). In: Geiser F, Hulbert AJ, Nicol SC (eds.) Adaptations to the Cold: Tenth International Hibernation Symposium. University of New England Press, Armidale. pp 109-114

1995

Körtner G, Geiser F (1995) Effect of photoperiod and ambient temperature on activity patterns and body weight cycles of mountain pygmy possums, Burramys parvus (Marsupialia). Journal of Zoology (London) 235: 311-322

Körtner G, Geiser F (1995) Body temperature rhythms and activity in reproductive Antechinus (Marsupialia). Physiology and Behavior 58: 31-36

Song X, Körtner G, Geiser F (1995) Reduction of metabolic rate and thermoregulation during daily torpor. Journal of Comparative Physiology B 165: 291-297

Holloway JC, Geiser F (1995) Influence of torpor on daily energy expenditure of the dasyurid marsupial Sminthopsis crassicaudata. Comparative Biochemistry and Physiology 112A: 59-66

Geiser F, Heldmaier G (1995) The impact of dietary fats, photoperiod and season on morphological variables, torpor patterns, and brown adipose tissue fatty acid composition of hamsters, Phodopus sungorus. Journal of Comparative Physiology B 165: 406-415

Broome LS, Geiser F (1995) Hibernation in free-living mountain pygmy-possums, Burramys parvus (Marsupialia: Burramyidae). Australian Journal of Zoology 43: 373-379

Geiser F, Ruf T (1995) Hibernation versus daily torpor in mammals and birds: physiological variables and classification of torpor patterns. Invited Perspective in Physiological Zoology 68: 935-966 Invited Review

1994

Geiser F, Masters P (1994) Torpor in relation to reproduction in the Mulgara, Dasycercus cristicauda (Dasyuridae: Marsupialia). Journal of Thermal Biology 19: 33-40

Geiser F (1994) Hibernation and daily torpor in marsupials: A review. Australian Journal of Zoology 42: 1-16 Invited Review

Geiser F, Learmonth RP (1994) Dietary fats, selected body temperature and tissue fatty acid composition of agamid lizards (Amphibolurusnuchalis) . Journal of Comparative Physiology B 164: 55-61

Geiser F, McAllan BM, Kenagy GJ (1994) The degree of dietary fatty acid unsaturation affects torpor patterns and lipid composition of a hibernator. Journal of Comparative Physiology B 164: 299-305

1993

Geiser F (1993) Hibernation in the eastern pygmy possum Cercartetus nanus (Marsupialia). Australian Journal of Zoology 41: 67-75

Geiser F, Broome LS (1993) The effect of temperature on the pattern of torpor in a marsupial hibernator. Journal of Comparative Physiology B 163: 133-137

Geiser F, Kenagy GJ (1993) Dietary fats and torpor patterns in hibernating ground squirrels. Canadian Journal of Zoology 71: 1182-1186

Geiser F (1993) Metabolic rate reduction during hibernation. In: Carey C, Florant GL, Wunder BA, Horwitz B (eds), Life in the Cold, Ecological, Physiological, and Molecular Mechanisms. Westview Press, Boulder. pp 549-552 Invited Review

Geiser F (1993) Dietary lipids and thermal physiology. In: Carey C, Florant GL, Wunder BA, Horwitz B (eds), Life in the Cold, Ecological, Physiological, and Molecular Mechanisms. Westview Press, Boulder. pp 141-153 Invited Review

1992

Jones CJ, Geiser F (1992) Prolonged and daily torpor in the feathertail glider, Acrobates pygmaeus (Marsupialia: Acrobatidae). Journal of Zoology (London) 227: 101-108

Geiser F, Firth BT, Seymour RS (1992) Polyunsaturated dietary lipids lower the selected body temperature of a lizard. Journal of Comparative Physiology B 162: 1-4

Geiser F, Stahl B, Learmonth RP (1992) The effect of dietary fatty acids on the pattern of torpor in a marsupial. Physiological Zoology 65: 1236-1245

1991

Geiser F, Broome LS (1991) Hibernation in the mountain pygmy possum Burramys parvus (Marsupialia). Journal of Zoology (London) 223: 593-602

Seymour RS, Geiser F, Bradford DF (1991) Metabolic cost of development in terrestrial frog eggs. Physiological Zoology 64: 688-696

Seymour RS, Geiser F, Bradford DF (1991) Gas conductance of the jelly capsule of terrestrial frog eggs correlates with embryonic stage, not metabolic demand or ambient PO2. Physiological Zoology 64: 673-687

Geiser F (1991) The effect of polyunsaturated dietary lipids on the pattern of daily torpor and the fatty acid composition of tissues and membranes of the deer mouse Peromyscus maniculatus. Journal of Comparative Physiology B 161: 590-597

Geiser F (1991) Detecting and reacting to change. Contribution to chapter in the text book "Biology the Common Threads", Australian Academy of Science, Canberra, 1991, pp 140-141

1990

Geiser F, Hiebert S, Kenagy GJ (1990) Torpor bout duration during the hibernation season of two sciurid rodents: interrelations with temperature and metabolism. Physiological Zoology 63: 489-503

Geiser F, Kenagy GJ (1990) Development of thermoregulation and torpor in the golden-mantled ground squirrel Spermophilus saturatus. Journal of Mammalogy 71: 286-290

Geiser F. Baudinette RV (1990) The relationship between body mass and rate of rewarming from hibernation and daily torpor in mammals. Journal of Experimental Biology 151: 349-359

Geiser F (1990) Influence of polyunsaturated and saturated dietary lipids on adipose tissue, brain and mitochondrial membrane fatty acid composition of a mammalian hibernator. Biochimica et Biophysica Acta 1046: 159-166

Geiser F, Sink HS, Stahl B, Mansergh IM, Broome LS (1990) Differences in the physiological response to cold in wild and laboratory-bred mountain pygmy possums Burramys parvus (Marsupialia). Australian Wildlife Research 17: 535-539

1989

Geiser F, Seymour RS (1989) Influence of temperature and water potential on survival of hatched, terrestrial larvae of the frog Pseudophryne bibronii. Copeia 1989: 207-209

Geiser F, Seymour RS (1989) Torpor in a pregnant echidna, Tachyglossus aculeatus. Australian Mammalogy 12: 81-82

Geiser F, Baudinette RV, McMurchie EJ (1989) The effect of temperature on isolated perfused hearts of heterothermic marsupials. Comparative Biochemistry and Physiology 93A: 331-335

1988

Geiser F (1988) Reduction of metabolism during hibernation and daily torpor in mammals and birds: temperature effect or physiological inhibition? Journal of Comparative Physiology B 158: 25-37

Garland T, Geiser F, Baudinette RV (1988) Comparative locomotor performance of marsupial and placental mammals. Journal of Zoology (London) 215: 505-522

Geiser F, Kenagy GJ (1988) Duration of torpor bouts in relation to temperature and energy metabolism in hibernating ground squirrels. Physiological Zoology 61(5): 442-449

Geiser F (1988) Daily torpor and thermoregulation in Antechinus (Marsupialia): influence of body mass, season, development, reproduction, and sex. Oecologia 77: 395-399

Geiser F, Baudinette RV (1988) Daily torpor and thermoregulation in the small dasyurid marsupials Planigale gilesi and Ningaui yvonneae. Australian Journal of Zoology 36: 473-481

1987

Geiser F (1987) Hibernation and daily torpor in two pygmy possums (Cercartetus spp., Marsupialia). Physiological Zoology 60: 93-102

Geiser F, Kenagy GJ (1987) Polyunsaturated lipid diet lengthens torpor and reduces body temperature in a hibernator. American Journal of Physiology 252: R897-R901

Geiser F, Baudinette RV (1987) Seasonality of torpor and thermoregulation in three dasyurid marsupials. Journal of Comparative Physiology B 157: 335-344

1986

Rahmann H, Hilbig R, Geiser F (1986) Brain gangliosides in monotremes, marsupials and placentals: phylogenetic and thermoregulatory aspects. Comparative Biochemistry and Physiology 83B: 151-157

Geiser F, Matwiejczyk L, Baudinette RV (1986) From ectothermy to heterothermy: the energetics of the Kowari Dasyuroides byrnei (Marsupialia: Dasyuridae). Physiological Zoology 59: 220-229

Geiser F, Baudinette RV, McMurchie EJ (1986) Seasonal changes in the critical arousal temperature of the marsupial Sminthopsis crassicaudata correlate with the thermal transition in mitochondrial respiration. Experientia 42: 543-547

Geiser F (1986) Thermoregulation and torpor in the Kultarr, Antechinomys laniger (Marsupialia: Dasyuridae). Journal of Comparative Physiology B 156: 751-757

Geiser F (1986) Temperature regulation in heterothermic marsupials. In: Heller HC, Musacchia XJ, Wang LCH (eds), Living in the Cold. Elsevier, New York, pp 207-212. Invited Paper

1985

Geiser F (1985) Tagesschlaflethargie bei der gelbfüssigen Breitfussbeutelspitzmaus Antechinus flavipes (Marsupialia: Dasyuridae). Zeitschrift für Säugetierkunde 50: 125-127

Geiser F (1985) Minireview: Hibernation in pygmy possums (Marsupialia: Burramyidae). Comparative Biochemistry and Physiology 81A: 459-463

Geiser F, McMurchie EJ (1985) Arrhenius parameters of mitochondrial membrane respiratory enzymes in relation to thermoregulation in endotherms. Journal of Comparative Physiology B 155: 711-716

Geiser F, Baudinette RV (1985) The influence of temperature and photophase on daily torpor in Sminthopsis macroura (Marsupialia: Dasyuridae). Journal of Comparative Physiology B 156: 129-134

1984

Geiser F, Augee ML, Raison JK (1984) Thermal response of liver mitochondrial membranes of two insectivorous mammals: a bat and a marsupial. In: Hales JRS (ed) Thermal Physiology, Raven Press, pp. 453-456

Geiser F, Augee ML, Raison JK (1984) Thermal response of liver mitochondrial membranes of the bat (Miniopterus schreibersii) in summer and winter. Journal of Thermal Biology 9: 183-188

Geiser F, McMurchie EJ (1984) Differences in the thermotropic behaviour of mitochondrial membrane respiratory enzymes from homeothermic and heterothermic endotherms. Journal of Comparative Physiology B 155: 125-133

Geiser F, McCarron HCK, Augee ML, Raison JK (1984) Correlates of torpor in the insectivorous dasyurid marsupial Sminthopsis murina. Australian Mammalogy 7: 185-191

1983

Mühleisen M, Geiser F, Hilbig R, Rahmann H (1983) Brain  gangliosides in hibernators. (Bioelectrical and molecular mechanisms of thermal regulation and adaptation. Workshop of the "Deutsche Forschungsgemeinschaft") Journal of Thermal Biology 8: 449-451

1981

Geiser F, Hilbig R, Rahmann H (1981) Hibernation-induced changes in the ganglioside composition of dormice (Glis glis). Journal of Thermal Biology 6: 145-151

Theses

Diplom Thesis (1980) Chemische Anpassung neuronaler Verbindungen bei normo- und heterothermen Vertebraten. Universität Hohenheim, Stuttgart

Ph.D. Thesis (1985) Physiological and biochemical aspects of torpor in Australian marsupials. Flinders University, Adelaide

Films

10-minute film on work with the endangered mountain pygmy-possum. ABC science series Quantum, 1993.

Related Links

Centre for Behavioural & Physiological Ecology (BPE)

The major aims of the Research Centre for Behavioural and Physiological Ecology are to investigate behavioural and physiological adaptations of Australian animals living in various habitats. It aims to investigate the impact environmental changes, such as climate change and habitat degradation on behavioural and functional adaptations. The Centre integrates aspects of foraging ecology, dispersal patterns, thermal biology and energetics to make predictions of how changes to the current landscape and climate will affect survival.

Members of BPE are: A/Prof. Nigel Andrew (Zoology), Dr. Stuart Cairns (Zoology), E/Prof. Hugh Ford (Zoology), Prof. Fritz Geiser, Director (Zoology), Dr. Graham Hall (Zoology), Dr. Gerhard Körtner, VC Postdoctoral Fellow (Zoology), Dr. Tommy Leung (Zoology), Dr. Bronwyn McAllan (University of Sydney), Dr. Paul McDonald (Zoology), Prof. John Paterson (Earth Sciences),  Dr. Clare Stawski (Zoology), A/Prof. Karl Vernes (Ecosystem Management), A/Prof. Steve Wroe (Zoology), and several Associate Members.