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Keywords: Reptile
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Journal Articles
J Exp Biol (2022) 225 (7): jeb227348.
Published: 1 April 2022
...Stephen P. Mackessy ABSTRACT The venom glands of reptiles, particularly those of front-fanged advanced snakes, must satisfy conflicting biological demands: rapid synthesis of potentially labile and highly toxic proteins, storage in the gland lumen for long periods, stabilization of the stored...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (17): jeb242202.
Published: 13 September 2021
... crocodiles and the lizard Trachydosaurus also respond more vigorously to decreased pressure compared with hypertension ( Millard and Moalli, 1980 ; Berger et al., 1980 ; Altimiras et al., 1998 ). These findings are not consistent with the view that amphibians and reptiles primarily rely on barostatic...
Journal Articles
J Exp Biol (2021) 224 (16): jeb242778.
Published: 24 August 2021
... Summary: Contraction of the python heart is initiated by pacemaker cells in the region between the left leaflet of sinoatrial valve and the posterior horn of the sinus venosus. Heart Reptile Acetylcholine Ionic currents Action potential Pacemaker Danmarks Frie Forskningsfond http...
Journal Articles
J Exp Biol (2021) 224 (12): jeb234427.
Published: 17 June 2021
...Nicholas B. Sakich; Glenn J. Tattersall ABSTRACT Whether scales reduce cutaneous evaporative water loss in lepidosaur reptiles (Superorder Lepidosauria) such as lizards and snakes has been a contentious issue for nearly half a century. Furthermore, while many studies have looked at whether...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (9): jeb242435.
Published: 12 May 2021
... binding Reptile Crocodilians are semiaquatic reptiles that dive to avoid predators or kill prey by drowning them (e.g. Campbell et al., 2010 ). The durations of voluntary dives have only been reported in a few species of crocodilians, but appear to be relatively short (10–15 min) compared...
Journal Articles
J Exp Biol (2021) 224 (5): jeb234054.
Published: 1 March 2021
... - 1588 . 10.1139/z88-231 Bellairs , A. and Bryant , S. V. ( 1985 ). Autotomy and regeneration in reptiles . In Biology of the Reptilia (ed. C. Gans and F. Billet ), pp. 15 , 303 - 410 . New York : Wiley . Bent , L. R. and Lowrey , C. R. ( 2013...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (21): jeb214171.
Published: 5 November 2020
... been made in elucidating the mechanisms of reptilian immunity. Here, I review recent discoveries associated with the recognition of pathogens, effector mechanisms and memory responses in reptiles. Moreover, I put forward key questions to drive the next 10 years of research, including how reptiles...
Journal Articles
J Exp Biol (2020) 223 (12): jeb223057.
Published: 17 June 2020
... and sampling date, with some evidence of a trade-off between reproductive effort and immune function with age. Immune function Reptile Senescence Aging Vertebrate aging is most commonly characterized by declining reproduction and survival with advancing age. Immunosenescence, age-related...
Journal Articles
J Exp Biol (2020) 223 (4): jeb215335.
Published: 20 February 2020
... of Biologists Ltd 2020 Summary: To understand how systemic blood flow (or ‘cardiac output’) is regulated, we must look at factors beyond the heart, namely vascular capacitance and conductance. Capacitance Vasculature Cardiac output Mean circulatory filling pressure Reptile Fish Resistance...
Journal Articles
J Exp Biol (2020) 223 (4): jeb213918.
Published: 17 February 2020
... expression of painted turtles is affected more by ontogeny than by anoxia. R-protein transcriptomic patterns suggest an adult-specific translational arrest mechanism that could explain divergent overwintering strategies across development. Chrysemys picta Comparative transcriptomics Reptile...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (21): jeb205419.
Published: 8 November 2019
... hypoxia. Developmental programming Phenotypic plasticity Crocodilian Reptile Hypoxia During the past two decades, exposure to different oxygen levels has been used to investigate the plasticity of the embryonic cardiovascular system in egg-laying species. Phenotypic changes have been...
Journal Articles
J Exp Biol (2019) 222 (18): jeb201459.
Published: 18 September 2019
..., but how jaw muscles and joint tissues mediate this mobility is unclear. FEA of the biomechanics of protractor muscles, joint tissues, and bite points reveals that torsion is a significant driver in the feeding apparatus of lizard skulls. Muscle loading Cartilage Evolution Reptile Skull...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (18): jeb206714.
Published: 16 September 2019
...Catherine J. A. Williams; Eva M. Greunz; Steffen Ringgaard; Kasper Hansen; Mads F. Bertelsen; Tobias Wang ABSTRACT The ejection fraction of the trabeculated cardiac ventricle of reptiles has not previously been measured. Here, we used the gold standard clinical methodology – electrocardiogram-gated...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (14): jeb198184.
Published: 25 July 2019
... noise Audiogram Reptile Hearing ability Auditory sensitivity Seismic survey Sea snakes (Elapidae; Hydrophiinae) are a highly diverse and critical component of reef and coastal ecosystems in tropical and subtropical areas of the Indian and Pacific Oceans ( Rasmussen et al., 2011 ; Sanders...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (10): jeb202390.
Published: 21 May 2019
... conservation strategies. Osmoregulation Energetics Oxygen consumption Salt gland Water balance Reptile While many species of terrestrial, freshwater or marine vertebrates take advantage of temporally available resources in estuaries, the diversity of species that live entirely within...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (7): jeb201079.
Published: 1 April 2019
...Justin L. Conner; Janna L. Crossley; Ruth Elsey; Derek Nelson; Tobias Wang; Dane A. Crossley ABSTRACT Reptiles have the capacity to differentially perfuse the systemic and pulmonary vascular circuits via autonomic regulation of the heart and the vascular trees. While this aptitude is widely...
Journal Articles
J Exp Biol (2018) 221 (22): jeb182600.
Published: 14 November 2018
... effects on phenotype and survival. Embryo Maternal effects Stress Trachemys scripta Reptile Author contributions Conceptualization: A.W.C., R.M.B., R.T.P.; Methodology: A.W.C., R.T.P.; Validation: A.W.C., R.T.P.; Formal analysis: A.W.C., R.T.P.; Investigation: A.W.C., R.M.B., R.T.P...
Journal Articles
J Exp Biol (2018) 221 (18): jeb185967.
Published: 24 September 2018
... Blood oxygen content Cardiac output Hemoglobin affinity Reptile Microsphere distribution For developing animals, the cardiovascular system is an essential component of the oxygen cascade that supports metabolic rate. A number of key variables allow an organism to regulate this system to meet...
Journal Articles
J Exp Biol (2018) 221 (8): JEB178194.
Published: 30 April 2018
... small in mammals (10–40%), but has been suggested to predominate in reptiles. We investigated the importance of atrial contraction in filling of the ventricle in American alligators ( Alligator mississippiensis ) by bypassing both atria (with the use of ligatures to prevent atrial filling) and measuring...
Journal Articles
J Exp Biol (2017) 220 (24): 4567–4570.
Published: 15 December 2017
... demonstrate steroid sulfatase is present in various tissues during embryonic development. Steroid metabolism Oviparous vertebrate Maternal effects Reptile Steroids are important mediators of embryonic development as they are capable of influencing phenotypes in all vertebrates ( Cooke et al...
Includes: Supplementary data