...Harvey B. Lillywhite; Elliott R. Jacobson; Coleman M. Sheehy III ABSTRACT Lepidosaurian reptiles, particularly snakes, periodically shed the outer epidermal layers of their skin (ecdysis) to restore or enhance vital functions such as regulating water and gaseous exchange, growth, and protection...

... hydration state through dietary water intake. Recent studies performed in snakes, which are generalist carnivorous reptiles, suggest that the benefits of dietary water intake are negated by hydric costs of digestion. Most lizards are generalist insectivores that can shift their prey types, but firm...

... species means, fCSA scaled more steeply in invertebrates (∝ M b 0.575 ), fish (∝ M b 0.347 ) and other reptiles (∝ M b 0.308 ) compared with varanids (∝ M b 0.267 ), which had a slightly higher scaling exponent than birds (∝ M b 0.134 ) and mammals (∝ M b 0.122 ). This suggests that, while fCSA generally...

... Ltd 2022 Summary: Mitochondrial properties of red-footed tortoises may underlie their slower senescence rates and increased lifespan. Reptiles Mitochondrial bioenergetics Negligible senescence Aging Cyclophilin D Adenine nucleotide translocator Fundação de Amparo...

.... Summary: In Diplolaemus leopardinus a reduced evaporative water loss may mitigate the impact of rising temperatures on water balance, but a detrimental effect on net energy gain could increase its vulnerability. Metabolism Phenotypic plasticity Reptiles Thermal preference Water loss...

... attrition in response to regular heavy exercise than males without bibs. Alternative mating tactics Telomere lengthening Reptiles Ctenophorus pictus Painted dragon lizards Color-polymorphic species are a valuable tool in resolving the interplay between sexually selected and life-history...

... occurs. This Review will begin by describing the processes of adult neurogenesis in reptiles and identifying the similarities and differences in these processes between reptiles and model rodent species. Further, this Review underscores the importance of appreciating how wild-caught animals vary...

... ( IPCC, 2018 ). Under this scenario, changes in phenology, abundance, distribution and extinction risk of natural populations are expected ( Sinervo et al., 2010 , 2018 ; Bestion et al., 2015 ; Llewelyn et al., 2018 ). Global warming Performance Phenotypic plasticity Reptiles Thermal...

...Joyce Keifer; Zhaoqing Zheng ABSTRACT Use of hypothermia as a means of anesthesia for amphibians and reptiles is prohibited by agencies that establish veterinary guidelines. This has recently been called into question by members of the scientific community based on reviews of published literature...

... The authors declare no competing or financial interests. 24 7 2014 17 11 2014 © 2015. Published by The Company of Biologists Ltd 2015 Reptiles Lizards Tegu Arterial chemoreceptors Oxygen chemoreception Carotid body ACh Serotonin Chemoreceptors play an important role...

... stiffness than those from other vertebrate classes may be implicated. * Author for correspondence (e-mail: [email protected] ) 10 4 2008 © The Company of Biologists Limited 2008 2008 sarcomere length–tension relationship mammals birds reptiles amphibians fish...

..., Physignathus lesueruii , and some generalizations about heating and cooling in reptiles. J. Therm. Biol. 4 , 95 -103. Grigg, G. C., Seebacher, F., Beard, L. A. and Morris, D. ( 1998 ). Thermal relations of large crocodiles, Crocodylus porosus , free-ranging in a naturalistic situation. Proc. Roy. Soc...

... relationships. e-mail: [email protected] 22 8 2002 © The Company of Biologists Limited 2002 2002 acid—base balance alphastat imidazole alphastat temperature pH carbon dioxide tension vertebrate fish amphibian reptiles cell pH The `imidazole alphastat hypothesis...

...J. N. Stinner; L. K. Hartzler; M. R. Grguric; D. L. Newlon ABSTRACT Whole-body CO 2 stores are known to increase with cooling in reptiles and amphibians (−Δ[CO 2 ]/Δ T ). The aim of this study was to determine the mechanism(s) producing this inverse relationship. The Δ[CO 2 ]/Δ T coefficients were...

...Susan R. Hopkins; Tobias Wang; James W. Hicks ABSTRACT In resting reptiles, the of pulmonary venous return ( ; left atrial blood) may be 20 mmHg (1 mmHg=0.1333 kPa) lower than the of gas in the lung. This level of is considerably higher than that observed in resting mammals and birds and results...

...James W. Hicks; Stephen G. Comeau ABSTRACT Two principal hypotheses account for intracardiac shunting in reptiles. The ‘pressure shunting’ hypothesis proposes that there is no fuctional separation between the ventricular cava during systole. The ‘washout shunting’ hypothesis suggests that the cavum...

... studies, the predicted quantity of CO 2 eliminated from the extracellular space when temperature increases is about 29% of the excess CO 2 eliminated from the snakes. Thus, in other tissues also decreases with rising temperature. It is concluded that reptiles function as open systems with respect...

... of Diagnostic Radiolog, Municipal Hospital of Aarhus, DK-800 Aarhus C, Denmark. 11 03 1987 © 1987 by Company of Biologists 1987 reptiles lizards intracardiac shunts angiocardiography There has been a long-standing and continuing discussion about intracardiac and central...

... ). Control of breathing in Acrochordus javanicus , an aquatic snake . Physiol. Zöol . 49 , 328 – 340 . Glass , M. L. & Wood , S. C. ( 1983 ). Gas exchange and control of breathing in reptiles . Physiol. Rev . 63 , 232 – 260 . 10.1152/physrev.1983.63.1.232 Jackson , D...

.... 18 4 1986 © 1986 by Company of Biologists 1986 reptiles pulmonary mechanics breathing pattern regulation In the anaesthetized semi-aquatic turtle, Pseudemys scripta , there is a specific combination of pump volume and pump frequency for which minimum power is required...