... across the gut epithelia. It has recently been suggested that this imbalance is at least partly caused by a cold-induced disruption of epithelial barrier function. Here, we aimed to test this hypothesis in the migratory locust ( Locusta migratoria ). First, chill tolerance was quantified by exposing...

... lethal temperature are the best predictors of cold distribution limits . Funct. Ecol.   29 , 55 - 65 . 10.1111/1365-2435.12310 Andersen , M. K. , Folkersen , R. , MacMillan , H. A. and Overgaard , J. ( 2017a ). Cold acclimation improves chill tolerance in the migratory locust...

... , H. A. ( 2017 ). The integrative physiology of insect chill tolerance . Annu. Rev. Physiol.   79 , 187 - 208 . 10.1146/annurev-physiol-022516-034142 R Core Team . ( 2017 ). R: A Language and Environment for Statistical Computing . See http://r-project.org:   R Foundation...

... quickly, and better maintained hemolymph K + balance in the cold. The improvements in chill tolerance coincided with increased Malpighian tubule fluid secretion and better maintenance of K + secretion rates in the cold, as well as reduced rectal K + reabsorption in cold-acclimated flies. To test whether...

...Mads Kuhlmann Andersen; Heath A. MacMillan; Andrew Donini; Johannes Overgaard ABSTRACT Insect chill tolerance is strongly associated with the ability to maintain ion and water homeostasis during cold exposure. Maintenance of K + balance is particularly important due to its role in setting the cell...

... of extracellular ion and water homeostasis, leading to chill injury and eventually death. Chill-tolerant species are characterized by lower hemolymph [Na + ] than chill-susceptible species and this lowered hemolymph [Na + ] is suggested to improve ion and water homeostasis during cold exposure. It has therefore...

...-tolerant Drosophila species may enter coma as a result of processes unrelated to muscle depolarization as their V m was not significantly depolarized at their chill coma temperatures. Chill tolerance Critical thermal minimum Cold exposure Comparative Inter-species Many insects succumb...

...V. Koštál; J. Vambera; J. Bastl SUMMARY Three acclimation groups [i.e. non-diapause (LD), diapause (SD) and diapause, cold-acclimated (SDA)] of the adult bugs Pyrrhocoris apterus differed markedly in their levels of chill tolerance. Survival time at a sub-zero, but non-freezing, temperature of –5...