... 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...

.... and Feder , J. L. ( 2010 ). Widespread genomic divergence during sympatric speciation . Proc. Natl. Acad. Sci. USA   107 , 9724 - 9729 . 10.1073/pnas.1000939107 Neilson , W. T. A. ( 1962 ). Effects of temperature on development of overwintering pupae of the apple maggot, Rhagoletis...

...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...

... 2 5 2002 © The Company of Biologists Limited 2002 2002 desiccation cold-hardiness water loss permeability overwintering gall wasp Diplolepis sp. Periclistus sp. hibernaculum Many overwintering insects in temperate and polar regions must endure cold and severely...

...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...