...Aude Noiret; Fabienne Aujard; Jeremy Terrien ABSTRACT The ‘thrifty female hypothesis’ states that females preserve more of their energy reserves during winter than males because of the sex-specific time frame of energy allocation for reproduction. As males reactivate their reproductive axis before...

...McKenna P. A. Burns; Caroline R. Reges; Spencer W. Barnhill; Kenna N. Koehler; Brandon C. Lewis; Alyssa T. Colombo; Nick J. Felter; Paul J. Schaeffer ABSTRACT Exposure to winter cold causes an increase in energy demands to meet the challenge of thermoregulation. In small rodents, this increase...

... gaps, proposed physiological mechanisms behind this trait and potential future directions of study. Marine invertebrate Intertidal zone Ectotherm Freezing Cold stress Winter National Sciences and Engineering Research Council of Canada Many intertidal invertebrates living...

...Ella K. Middleton; Matthew J. H. Gilbert; Thomas Landry; Simon G. Lamarre; Ben Speers-Roesch ABSTRACT Poleward winters commonly expose animals, including fish, to frigid temperatures and low food availability. Fishes that remain active over winter must therefore balance trade-offs between...

...Lauren E. Rowsey; Connor Reeve; Tyler Savoy; Ben Speers-Roesch ABSTRACT Winter cold slows ectotherm physiology, potentially constraining activities and ecological opportunities at poleward latitudes. Yet, many fishes are winter-active, facilitated by thermal compensation that improves cold...

...Lucy A. Winder; Stewart A. White; Andreas Nord; Barbara Helm; Dominic J. McCafferty ABSTRACT During winter at temperate and high latitudes, the low ambient temperatures, limited food supplies and short foraging periods mean small passerines show behavioural, morphological and physiological...

..., disease resistance and transmission. The effects of temperature on immunity will be particularly profound in winter because cold and overwintering are important triggers and regulators of ectotherm immune activity. Low temperatures can both suppress and activate immune responses independent of parasites...

... on a winter visit to Cape Washington, we obtained evidence that some birds may feed before the egg is laid, and if they do, and some are males, then their fast is much less than 115 days. The consequence of a shorter fast for the male is a better chance of completing the 65 day incubation fast and success...

... and thermal physiology of subtropical insectivorous northern long-eared bats, Nyctophilus bifax , during summer ( n =13) and winter ( n =8) by temperature telemetry. As predicted, ambient conditions varied significantly between seasons, with warmer weather during summer. All bats used torpor on 85...

...Hans Ramløv; Richard E. Lee, Jr ABSTRACT During winter, larvae of the goldenrod gall fly Eurosta solidaginis are exposed for extended periods to severe low ambient temperatures and low humidities within plant galls. The resistance of these larvae to desiccation at various temperatures...