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A comparison of low temperature biology of Pieris rapae from Ontario, Canada, and Yakutia, Far Eastern Russia.

https://arctichealth.org/en/permalink/ahliterature307365
Source
Comp Biochem Physiol A Mol Integr Physiol. 2020 04; 242:110649
Publication Type
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Date
04-2020
Author
Natalia G Li
Jantina Toxopeus
Martin Moos
Jesper G Sørensen
Brent J Sinclair
Author Affiliation
Institute of Medicine, M.K. Ammosov North Eastern Federal University, Kulakovskogo Street 36, Yakutsk, Sahka Republic (Yakutia) 677007, Russia. Electronic address: li_natalia@mail.ru.
Source
Comp Biochem Physiol A Mol Integr Physiol. 2020 04; 242:110649
Date
04-2020
Language
English
Publication Type
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Keywords
Adaptation, Physiological
Animals
Butterflies - physiology
Canada
Cold Temperature
Cryobiology
Freezing
Hemolymph - physiology
Russia
Abstract
Low temperatures limit the distribution and abundance of ectotherms. However, many insects can survive low temperatures by employing one of two cold tolerance strategies: freeze avoidance or freeze tolerance. Very few species can employ both strategies, but those that do provide a rare opportunity to study the mechanisms that differentiate freeze tolerance and freeze avoidance. We showed that overwintering pupae of the cabbage white butterfly Pieris rapae can be freeze tolerant or freeze avoidant. Pupae from a population of P. rapae in northeastern Russia (Yakutsk) froze at c. -9.3 °C and were freeze-tolerant in 2002-2003 when overwintered outside. However, P. rapae from both Yakutsk and southern Canada (London) acclimated to milder laboratory conditions in 2014 and 2017 froze at lower temperatures (
PubMed ID
31923628 View in PubMed
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