...Theresa E. Mackey; Caleb T. Hasler; Travis Durhack; Jennifer D. Jeffrey; Camille J. Macnaughton; Kimberly Ta; Eva C. Enders; Ken M. Jeffries ABSTRACT Understanding the resilience of ectotherms to high temperatures is essential because of the influence of climate change on aquatic ecosystems...

... may be a determining factor in the superior anoxia tolerance of adult relative to hatchling painted turtles. Temperature Heart Hatchling Development Ectotherm iTRAQ Protein expression Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039...

...Christian O. Chukwuka; Joanne M. Monks; Alison Cree ABSTRACT Understanding the interaction between upper voluntary thermal limit (VT max ) and water loss may aid in predicting responses of ectotherms to increasing temperatures within microhabitats. However, the temperature at which climate heating...

... was to investigate the stability of body temperature in large fish using data from field experiments. We measured the muscle temperatures of free-ranging whale sharks ( Rhincodon typus ), the largest extant fish globally, and investigated their ectothermic physiology and the stability of their body temperature...

...Meggan A. Alston; Jeeyun Lee; M. Elizabeth Moore; Joel G. Kingsolver; Christopher S. Willett ABSTRACT High temperatures can negatively impact the performance and survival of organisms, particularly ectotherms. While an organism's response to high temperature stress clearly depends on current...

...Nicholas M. Teets; J. D. Gantz; Yuta Kawarasaki ABSTRACT Rapid cold hardening (RCH) is a type of phenotypic plasticity that allows ectotherms to quickly enhance cold tolerance in response to brief chilling (lasting minutes to hours). In this Review, we summarize the current state of knowledge...

...Anne M. Treasure; Steven L. Chown ABSTRACT Ectotherms may respond to variable environmental conditions by altering their phenotypes. Phenotypic plasticity was initially thought to be beneficial to an organism's physiological fitness but several alternative hypotheses have been proposed with growing...

...Samantha S. Fontaine; Alexander J. Novarro; Kevin D. Kohl ABSTRACT Environmental temperature and gut microbial communities can both have profound impacts on the digestive performance of ectothermic vertebrates. Additionally, the diversity, composition and function of gut microbial communities...

... not. Corticosterone Performance Amphibian Ectotherm Plethodontid Climate Water-borne hormones Ectothermic organisms may be disproportionately vulnerable to temperature extremes, which are expected to become more common under anthropogenic climate change. The ability of ectotherms to perform...

...Andrea J. Morash; Claire Neufeld; Tyson J. MacCormack; Suzanne Currie ABSTRACT Environmental variability in aquatic ecosystems makes the study of ectotherms complex and challenging. Physiologists have historically overcome this hurdle in the laboratory by using ‘average’ conditions, representative...

... of these mechanisms can be difficult to separate. In this study, we used the western fence lizard, Sceloporus occidentalis , as an ectothermic model to determine whether a reduction in metabolic rate is sufficient to resist muscle atrophy. We induced atrophy through sciatic denervation of the gastrocnemius muscle...

... Feeding Temperature effects Ballistic movement Ectotherm Changes in temperature present a significant challenge to organisms, especially ectotherms; low temperature can result in substantial decreases in ecologically relevant performance such as predator escape and feeding ( Huey and Bennett...

...Marc Pépino; Katerine Goyer; Pierre Magnan ABSTRACT Temperature is the primary environmental factor affecting physiological processes in ectotherms. Heat-transfer models describe how the fish's internal temperature responds to a fluctuating thermal environment. Specifically, the rate coefficient...

... Summary: Eurythermal teleosts suppress mitochondrial respiration through NADH dehydrogenase (complex I) with no detectable loss of function during acute temperature shifts. Mitochondria Thermal acclimation ROS Proton leak kinetics Killifish Ectotherm Environmental temperature imposes...

... and geographic scales . Proc. Natl. Acad. Sci. USA 103 , 9560 – 9565 . Grant B. W. , Porter W. P. ( 1992 ). Modeling global macroclimatic constraints on ectotherm energy budgets . Am. Zool. 32 , 154 – 178 . Helmuth B. ( 2009 ). From cells to coastlines: how can we use...

...John S. Terblanche; Ary A. Hoffmann; Katherine A. Mitchell; Lea Rako; Peter C. le Roux; Steven L. Chown Summary The acute thermal tolerance of ectotherms has been measured in a variety of ways; these include assays where organisms are shifted abruptly to stressful temperatures and assays where...

... of all jawed vertebrates is complex, but unlike the endothermic vertebrates, relatively little is known about the functioning of the ectothermic vertebrate immune system, especially the reptilian system. Because turtles are long-lived ectotherms, factors such as temperature and age may affect...

... acclimation, as shown in other ectotherms ( Feder, 1983 ; Seebacher and James, 2008 ). Following 4 months of hibernation, LDH activity is decreased in at least one species of frog ( St Pierre and Boutillier,2001 ). A study from the fish literature proposes that at cold temperature, LDH concentrations...

... of Biologists Limited 2007 2007 season lactate exercise metabolism ectotherm bullfrog blood pH It has long been recognized that ectothermic vertebrates such as fish,frogs and lizards rely heavily upon carbohydrate metabolism to fuel activity. Although decades of study have thoroughly...

... acclimatization cold acclimation desiccation diapause cold tolerance ectotherm Insecta Heteroptera Poikilotherm organisms, from bacteria, through plants to animals, show capacity for remodelling of the lipid composition of their biological membranes in response to changing ambient temperature...