... unfavorable seasons. In spite of impressive progress that has been made in understanding diapause, many exciting questions remain unanswered. Dormancy Overwintering Seasonality The capacity for diapause, a dormant state encompassing months of suppressed metabolism, enables insects to survive...

... seasons, and winter is the season warming most rapidly. Yet, we know relatively little about how warming will alter the physiology of overwintering organisms. Here, we simulated future warming conditions by comparing diapausing Pieris rapae butterfly pupae collected from disparate thermal environments...

... into cooler environments. Cold resistance Insect Metabolic rate Ovarian arrest Triglycerides Overwintering Selective pressures vary considerably across seasons. As a consequence, reproductive performance can be strongly influenced by dynamic environmental challenges, resulting...

... 2016 Summary: Transcriptomics reveals that summer emergence timing of flies is regulated during winter, while initial transcriptional responses to post-winter warming are largely suppressed. Diapause Phenology Overwintering Gene expression Rhagoletis The waxing and waning...

...Peter A. Zani; Jason T. Irwin; Mary E. Rollyson; Jessica L. Counihan; Sara D. Healas; Emily K. Lloyd; Lee C. Kojanis; Bernard Fried; Joseph Sherma SUMMARY Climate change is causing winters to become milder (less cold and shorter). Recent studies of overwintering ectotherms have suggested...

...Johannes Overgaard; Hans Gesser; Tobias Wang SUMMARY Freshwater turtles overwintering in ice-covered ponds in North America may be exposed to prolonged anoxia, and survive this hostile environment by metabolic depression. Here, we review their cardiovascular function and regulation, with particular...

... cocoons exposed to cold: a novel cold hardiness mechanism. J. Comp. Physiol. B 164 , 312 -315. Leather, S. R., Walters, F. K. A. and Bale, J. S. ( 1995 ). The Ecology of Insect Overwintering . Cambridge: Cambridge University Press. Lee, R. E. ( 1991 ). Principles of insect low temperature...

...Glenn J. Tattersall; Robert G. Boutilier ABSTRACT At the low temperatures of the overwintering environment of the frog Rana temporaria , small changes in ambient temperature have large effects on metabolism and behaviour, especially since Q 10 values are often greatly elevated in the cold. How...

...G. J. Tattersall; R. G. Boutilier ABSTRACT Many animals respond to hypoxic stress by selecting cooler environments, the so-called ‘behavioural hypothermia’ response. Amphibians overwintering in ice-covered ponds and lakes offer an ecologically relevant test of this response since they must choose...

... of complete O 2 lack. Many overwintering amphibians do, however, tolerate prolonged bouts of severe hypoxia, relying exclusively on cutaneous gas exchange. Rana temporaria overwintering for 2 months in hypoxic water ( approximately 25 mmHg) at 3 °C progressively reduce their blood to levels characteristic...