Literature cited
Revised 2 Seo 2026.
Arnold P (2021) Evolution of the mammalian neck from developmental,developmental, morpho-functional and palenontological perspectives. J Mammal Evo 28:173-183.
Banarjee A, Meenakumari KJ, Krishna A (2007) Relationship between delayed embryonic development and metabolic factors and fat deposition in fruit bat Cynopterus sphinx. Reprod Fertil Develop 19:626-633.
Beard LA, Grigg GC, Augee ML (1992) Reproduction by echidnas in a cold climate. In: Augee ML, editor. Platypus and echidnas. Sydney: Royal Zoological Society of New South Wales. P. 93-100.
Beard LA, Grigg GC (2000) Reproduction in the short-beaked echidna, Tachyglossus aculeatus: field observations at an elevated site in south-east Queensland. Proc Linn Soc, NSW 122:89-99.
Botha-Brink J, Codron D, Huttenlocker AK, and three others (2016) Breeding young as a surival strategy during earth's greatest mass extinction. Scient Rep 24053.
Botha-Brink J (2017) Burrowing in Lysostratus: preadaptation to a postextinction environment. J Veterbrate Physiol 37 e1365080
Brice PH (2009) Thermoregulation in monotremes: riddles in a mosaic. Austral J Zool 57:255-263
Brocal J, DeDeckers S, Jose-Lopez (2018) C7 vertebra homeotic transformation in domestic dogs-are Pug dongs breaking mammalian evolutionary constraints. J Anat 233:255-265.
Buffenstein R, Yahav S (1991) Is the naked mole-rat Heterocephalus glaber an endothermic yet poikilothermic mammal. J Thern Biol 16:227-232.
Buchholtz, EA, Ballin HG, and four others (2012) Fixed cervical count and the origin of the mammalian diaphragm. Evo Develop 14:399-411.
Cairns MJ, Burns P, Di Nicolantonio R, and two others (2005) Influence of brain angiotensin on thermoregulation and hypomineral balance during pregnancy in rats. J Appl Physiol 98:1813-1819.
Canale CI, Perret M, Henry P-V (2012) Torpor use during gestation and lactation in a primate. Naturwissenschaftin 99:159-163.
Cuxart-Erruz R, Van Dooren TJM, van der Geer, Galis F (2024) Increased incidences of cervical ribs in deer indicate extinction risk. PNAS
Dausmann KH, Warnecke L (2016) Primate torpor expression: Ghost of the climatic past. Physiol 31:398-408.
Dzal YA, Brigham RM (2013) The tradeoff between torpor use and reproduction in little brown bats (Myotislucifugus) J Comp Physiol B 183:279-288.
Eisenberg JF (1981) The mammalian radiations: An analysis of trends in evolution, adaptation, and behavior. Chicago: University of Chicago Press.
Eliason HL, Fewell JE (97) Thermoregulation during pregnancy and lactation in rats. J Appl Physiol 83:837-844.
Ferguson A, Turner B (2013) Reproductive parameters and behaviour of captive short-beaked echidna (Tachyglossus aculeatus acanthion) at Perth Zoo. Austral Mammal 35:84-92.
Engezar R, Patterson L, Rao A, Parichy D (2007) Zebrafish in the wild: a review of natural history and new notes from the field. Zebrafish 4:21-40)
Farmer C (2000) Parental care: the key to understanding endothermy and other convergent features in birds and mammals. Am Natural 155:326-334.
Fernandez et al. (2013) Synchrotron reveals early Triassic odd couple: Injured amphibian and aestivating therapsid share burrow. PLOS One 8,e64978.
Fowler PA(1988) Thermoregulation in the female hedgehog, Erinaceous europaeus, during the breeding season. J Reprod Fert 82:285-292.
Freibe A, Evans AL, Amemo JM, and four others (2014) Factors affecting date of implantation, parturition, and den entry estimated from activity and body temperature in free-ranging brown bears. PLoS ONE 9, e101410.
Galis F (1999) Why do almost all mammals have seven cervical vertebrae: Developmental constraints, Hox genes and cancer J Exp Zool B(Mol Dev Evol)285:19-26.
Gales F, Metz JAJ (2001) Testing the vulnerability of the phylotypic stage: on the modularity aand evolutionary conservation. J Exp Zool 291:195-204.
Galis F, Van Dooren TJM (2022) Breaking the constraint on the number of cervical vertebrae in mammals: on homeotic transformations in lorises and pottos. Evo & Dev 24:196-210.
Gamo Y, Bernard A, Mitchell SE, and five others (2013). Limits to sustained energy intake. XVI. Body temperature and physical activity of female mice during pregnancy. J Exp Biol 216:2328-2338.
Geiser F, Masters (1994) Torpor in relation to reproduction in the Mulgara, Dasycercus cristicuada (Dasyuridae:Marsupialia). J Thernal Biol 19:33-40.
Geiser F, McAllan BM, Brigham RM (2005) Daily torpor in a pregnant dunnart (Sminthopsis macroua Dasyuridae: Marsupialia) Mammal Biol 70:117-121.
Geiser F, Christian N, Cooper CE, and 7 others (2008) Torpor in Marsupials: recent advances. Espace.curtin.edu.au
Gilmore CP, Da-Costa CP, Duarte, DPF (2000) An update on the physiology of two- and three-toed sloths. Braz J Med Biol Res 33:129-146.
Green B, Griffiths M, Newgrain K (1985) Intake of milk by suckling echindnas (Tachyglossus aculeatus). Comp Biochem Physiol 81:441-444.
Griffiths M (1978) The biology of monotremes. Academic Press: New York.
Grigg GC, Beard LA, Barnes JA, Perry LI, Fry GJ, Hawkins M (2003) Body temperature in captive long-beaked echidnas (Zaglossus Bartoni). Comp Biochem Physiol 136:911-916.
Grigg G, Nowack J, Bicudo JEPW, and four others (2022) Whole-body endothermy: ancient, homologous and widespread among the ancestors of mammals, birds and crocydilians. Biol Rev 97:766-801.
Hirasawa T, Fujimoto S, Kuratani S (2016) Expansion of the neck reconstituted the shoulder-diaphragm in amniote evolution. Devel Growth Diff 58:143-153.
Huttenlocker AK, Botha-Brink J (2013) Body size and growth patterns in the therocephalian Moschorhinus kitchingi (Therapdsida: Eutheriodontia) before and after the end-Permian extinction in South Africa. Paleobiol 39, 253-277.
Huttenlocker AK, Farmer C (2016) Bone microvasculature tracks red blood cell size diminution in Triassic and dinosaur forerunners. Curr Biol 27:48-54.
Irvine AB (1993) Manatee metabolism and its influence on distribution in Florida. Biol Conserv 25:315-334.
Katsumata K, Jaroenporn S, Katsumata H, and four others (2006) Body temperature and circulating progesterone levels before and after parturition in killer whales (Orcinus orca). J Repro Dev 52:65-71.
Kawamoto K (2003) Endocrine control of reproductive activity in hibernating bats. Zool sci 20:1057-1069.
Kittrell EMW, Satinoff E (1988) Diurnal rhythms of body temperature, drinking and activity over reproductive cycles. Physiol Behav 42:477-484.
Krushchova AM, Vasilieva NY, Shekarova ON and two others (2023) Daily torpor in Campbell’s hamster (Phodopus campbelli Thomas, 1905): proximate factors and ultimate fitness consequences. Russian J Theriol 22:32-43.
Kortner G, Pavey C, Geiser F (2008) Thermal biology, torpor, and activity in free-living mulgaras in arid zone Australia during the winter reproductive season. Physiol Biochem Zool 81:442-451.
Kortner G, Geiser F (2011) Activity and torpor in two sympatric Australian desert marsupials. J Zool 283:249-
Kozak W (1997) Regulated decreases in body temperature. In: Mackowiak PA ed. Fever: Basic Mechanism and Management, Philadelphia USA Lippincott-Raven pp 467-478.
Kuroyanagi A, Ukyo R, and seven others (2022) Body temperature measurement reveals the reproductive profile of female Apodemus speciosus under laboratory and field conditions. Mammal Study 47:177-187.
Lauren M (2005) Embryo retention, character optimization, and the origin of extra-embryonic membranes of the amniotic egg. J Nat Hist 39:3151-3161.
Laass et al. (2011) New insights into the respiration and metabolic physiology of Lystorsaurus. Acta Zoolog 92:363-371.
Lehmer EM, Bossenbroek JM, Van Horne B (2003) The influence of environment, sex, and innate timing mechanisms on body temperature patterns of free-ranging black-tailed prairie dogs (Cynomys ludovicianus). Physiol Biochem Zool 76:72-83.
Levesque DL, Lovegrove BG (2014) Increased homeothermy during reproduction in a basal placental mammal. J Exp Biology 217:1535-1542.
Lovegrove BG (2000) The zoogeography of mammalian basal metabolic rate. Am Nat 156:201-219.
Lovegrove BG (2014) Cool sperm: Why some placental mammals have a scrotum. J Evol Biol 27:801-814.
Lovegrove BG (2019) Fires of Life: Endothermy in Birds and Mammals. Yale University Press, New Haven.
McAllan BM, Geiser F (2014) Torpor during reproduction in mammals and birds: dealing with an energetic conundrum. Integrat Comp Biol 54:516-532.
Moore CR (1926) The biology of the mammalian testis and scrotum. Quart Rev Biol 1:4-50.
Morrison PR (1945) Acquired homiothermism in the pregnant sloth. J Mammal 26:272-275.
Morrow G, Nicol SC (2009) Cool sex? Hibernation and reproduction overlap in the echidna. PLoS One 4:e6070.
Morrow, GE, Jones SM, Nicol SC (2017) Frozen embryos? Torpor during pregnancy Tasmanian short-beaked echidna Tachyglosus acuteatus setosus. Gen Comp Endocrinol 244:139-145.
Morrow, GE, Jones SM, Nicol SC (2017) Frozen embryos? Torpor during pregnancy Tasmanian short-beaked echidna Tachyglosus acuteatus setosus. Gen Comp Endocrinol 244:139-145.
Muller J, Scheyer TM and 6 others (2010) Homeotic effects, somitogenesis and evolution of vertebral numbers in recent and fossil amniotes. Proc Natl Acad Sci 107:2118-2123.
Nicol S, Andersen NA (2002) The timing of hibernation in Tasmanian echidnas: why do they do it when they do? Comp Biochem Physiol B 131-603-611.
Nicol SC (2005) Seasonal variations in reproductive hormones of free-ranging echidnas (Tachyglossus acuteatus): interaction between reproduction and hibernation. Gen Comp Endocrinol .
Nicol S, Andersen NA (2006) Body temperature as an indicator of egg-laying in the echidna, Tachyglossus acuteatus. J Thern Biol 31:483-490.
Nicol S, Andersen NA (2007) The life history of an egg-laying mammal, the echidna (Tachyglossus acuteatus). Ecosci 14:275-285.
Olivier C, Houssaye A, Jalil N-E, Cubo J (2017) First palaeohistological inference of resting metabolic rate in an extinct synapsid, Moghreberia nmacouensis (Therapsida: Anomodontia). Biol J Linn Soc 121:409-419.
Parker CA, Geiser F, Stawski C (2019) Thermal physiology and activity in relation to reproductive status and sex in a free-ranging semelparous marsupial. Conserv Physiol 7:1-10.
Poelmann RE, Gittenberger-de Groot AC, Vicente-Smith R, and 13 others (2014) PLoS One 9, e106569.
Poppitt SD, Speakman JR, Racey PA (1994) Energetics in the lesser hedgehog tenrec, Echinops telfairi (Martin). Physiol Zool 67:976-994.
Pretzlaff I, Rau D, Dausmann KH (2014) Energy expenditure increases during the active season in the small, free-living hibernator, Muscardius avellanarius. Mammal Biol 79:208-214.
Przybylska-Piech AS, Wojciechowski MS, Jefimow M (2021) Polymorphism of winter phenotype in Siberian hamster: consecutive litters do not differ in photoresponsiveness but prolonged acclimation to long photoperiod inhibits winter molt. Front Zool 18:11-32.
Przybylska-Piech AS, Jefimow M (2022) Siberian hamsters nonresponding to short photoperiod use fasting-induced torpor. J Exp Biol 225:
Racey PA, Swift SM (1981) Variations in gestation length in a colony of pipistrelle bats (Pipistrellus pipistrellus) from year to year. J Reprod Fertil 61:123-129.
Rismiller PD (1991) The ecidna, Scientific American.
Reumer JWF, Ten Brock CMA, Galis F. (2014) Extraordinary incidence of cervical ribs indicates vulnerable conditions in late Pleistocene mammals. Peer J.
Rismiller PD, McKelvey MW (1996) Sex, torpor and activity in temperate climate echidnas. Pp. 23-30 in Adaptations to the cold (F Geiser, AJ Hulbert and SC Nichols, eds.) University of New England, Armidale, New South Wales, Australia.
Rismiller PD, McKelvey MW (2000) Frequency of breeding and recruitment in the short-beaked echindna, Tachyglossus aculateus. J Mammal. 81:1-17.
Rismiller PD, McKelvey MW (2003) Body mass, age and sexual maturity in short-beaked echidnas, Tachyglossus aculeatus. Comp Biochem Physiol A. Comparative Physiology 136:851-865.
Rismiller PD, Grutzner F (2019) Tachyglosssus aculeatus (Monotremata: Tachyglossidae). Mammalian Species, academic.oup.com
Roberts C (2019) The Effect of Pregnancy and Lactation on the Body Temperatures of Free-living Vervet Monkeys. MS dissertation, University of the Witwatersrand, Johannesburg, South Africa.
Roelling B, Drews B, Goeritz F, Hildebrandt TB (2011) The long gestation of the small naked mole-rat (Heterocephalus glaber Ruppell, 1842) studied with ultrasound biomicroscopy and 3D-ultrasonography. PLOS One 6:1-10.
Rommel SA, Pabst DA, McLellan WA (2001) Functional morphology of venous structures associated with male and female reproductive systems in Florida manatees (Trichechus manatus latirostris). Anat Rec 264:339-347.
Rommel SA, Caplan H (2003) Vascular adaptations for heat conservation in the tail of Florida manatees (Trichechus manatus latirostris). J Anat 202:343-353.
Rowell TE (1970) Reproductive cycles of two Cercopithecus monkeys. J Repro Fert 22:321-338.
Sanchez-Villagra MR (2010) Developmental paleontology in synapsids: the fossil record of ontogeny in mammals and their closest relatives. P Roy Soc B-Biol 277:1139-1147.
Schmidt NM, Grendahl C and ten others (2020) On the interplay between hypothermia and reproduction in a high artic ungulate. Scientific Reports 10: Article 1514.
Schrader JA, Walaszczyk EJ, Smale, L. (2009) Changing patterns of daily rhythmicity across reproductive status in diurnal female Nile grass rats (Arvicanthus niloticus). Physiol Behav 98:547-556.
Schroter C, Herrgen L, Cardona A, and three others (2008) Dynamics of zebrafish somitogenesis. Dev Dynam 237:545-553.
Selwood L (1980) A timetable of embryonic development of the dasyurid marsupial Antechinus stuartii (Macleay). Aust J Zool 28:649-668.
Stawski C (2010) Torpor during the reproductive season in a free-ranging subtropical bat, Nyctophilus bifax. J Therm Biol 35:245-249.
Stawski C, Rojas D (2016) Thermal physiology of a reproductive female marsupial, Actechinus flavipes. Mammal Res 61:417-421.
Stephenson PL, Racey PA (1993a) Reproductive energetics of the tenrecidae (mammalian: insectivore). II. The shrew-tenrecs, Microgale spp. Physiol Zool 66:664-685.
Stephenson PL, Racey PA (1993b) Reproductive energetics of the tenrecidae (mammalian: insectivore). I. The large-eared tenrec, Geogale aurita. Physiol Zool 66:643-666.
Thiel A, Evans AL, and four others (2019) Effects of reproduction and environmental factors on body temperature and activity patterns in wolverine. Front Zool 16:21-31.
Timonin ME, Place NJ, Wanderi E, Wynne-Edwards (2006) Phodopus campbelli detect reduced photoperiod during development but, unlike Phodopus sungorus, retain functional reproductive physiology. Reproduction 132:661-670.
Trethowen PD, Hart T, and four others (2016) Improved homeothermy and hypothermia in African lions during gestation. Biol Lett
Toien O, Blake J, and four others (2011). Hibernation in black bears: independence of metabolic suppression from body temperature. Science 331:906-909.
Turbill C, Geiser F (2006) Thermal physiology of pregnant and lactating female and male long-eared bats, Nyctophilus geoffroyi and N. gouldi. J Comp Physiol B 176:165-172.
Urison NT, Buffenstein R (1994) Shifts in thermoregulatory patterns with pregnancy in the poikilothermic mammal-the naked mole rat (Heterocephalus glaber. J Therm Biol 6:365-371.
Urison NT, Buffenstein R (1995) Metabolic and body temperature changes during pregnancy and lactation in the naked mole rat (Heterocepalus glaber). Physiol Zool 68402-420.
van der Geer, Galis F (2017) High incidence of cervical ribs indicates vulnerable condition in late Pleistocene wolly rhinoceroses. Perr J.
Varela-Lasheras I, Bakker AJ, and 4 others (2021) Breaking evolutionary and pleiotropic constraints in mammals: on sloths, manatees and homeotic mutations. EvoDevo 2:2-27.
Werneburg I, Sanchez-Villagra MR (2011) The early development of the echidna, Tachyglossus aculaetus (Mammalia: Monotremata), and patterns of mammalian development. Acta Zool 92:75-88.
Wharfe MD, Wyrwoll CS, Waddell BJ, Mark PJ (2016) Pregnancy suppresses the daily rhythmicity of core body temperature and adipose metabolic gene expression in the mouse. Endocrin 157:3320-3331.
Williams CT, Sheriff MJ, and five others (2011) Data logging of body temperatures provides precise information on phenology of reproductive events in a free-living artic hibernator. J Comp Physiol B 181:1101-1109.