Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster

Abstract Species from colder climates tend to be more chill tolerant regardless of the chill tolerance trait measured, but for Drosophila melanogaster, population-level differences in chill tolerance among populations are not always found when a single trait is measured in the laboratory. We measure...

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Autores principales:	Hannah E. Davis, Alexandra Cheslock, Heath A. MacMillan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/37c1090202a94ecf99871a5522621deb
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spelling	oai:doaj.org-article:37c1090202a94ecf99871a5522621deb2021-12-02T16:53:19ZChill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster10.1038/s41598-021-90401-52045-2322https://doaj.org/article/37c1090202a94ecf99871a5522621deb2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90401-5https://doaj.org/toc/2045-2322Abstract Species from colder climates tend to be more chill tolerant regardless of the chill tolerance trait measured, but for Drosophila melanogaster, population-level differences in chill tolerance among populations are not always found when a single trait is measured in the laboratory. We measured chill coma onset temperature, chill coma recovery time, and survival after chronic cold exposure in replicate lines derived from multiple paired African and European D. melanogaster populations. The populations in our study were previously found to differ in chronic cold survival ability, which is believed to have evolved independently in each population pair; however, they did not differ in chill coma onset temperature and chill coma recovery time in a manner that reflected their geographic origins, even though these traits are known to vary with origin latitude among Drosophila species and are among the most common metrics of thermal tolerance in insects. While it is common practice to measure only one chill tolerance trait when comparing chill tolerance among insect populations, our results emphasise the importance of measuring more than one thermal tolerance trait to minimize the risk of missing real adaptive variation in insect thermal tolerance.Hannah E. DavisAlexandra CheslockHeath A. MacMillanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hannah E. Davis Alexandra Cheslock Heath A. MacMillan Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster
description	Abstract Species from colder climates tend to be more chill tolerant regardless of the chill tolerance trait measured, but for Drosophila melanogaster, population-level differences in chill tolerance among populations are not always found when a single trait is measured in the laboratory. We measured chill coma onset temperature, chill coma recovery time, and survival after chronic cold exposure in replicate lines derived from multiple paired African and European D. melanogaster populations. The populations in our study were previously found to differ in chronic cold survival ability, which is believed to have evolved independently in each population pair; however, they did not differ in chill coma onset temperature and chill coma recovery time in a manner that reflected their geographic origins, even though these traits are known to vary with origin latitude among Drosophila species and are among the most common metrics of thermal tolerance in insects. While it is common practice to measure only one chill tolerance trait when comparing chill tolerance among insect populations, our results emphasise the importance of measuring more than one thermal tolerance trait to minimize the risk of missing real adaptive variation in insect thermal tolerance.
format	article
author	Hannah E. Davis Alexandra Cheslock Heath A. MacMillan
author_facet	Hannah E. Davis Alexandra Cheslock Heath A. MacMillan
author_sort	Hannah E. Davis
title	Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster
title_short	Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster
title_full	Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster
title_fullStr	Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster
title_full_unstemmed	Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster
title_sort	chill coma onset and recovery fail to reveal true variation in thermal performance among populations of drosophila melanogaster
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/37c1090202a94ecf99871a5522621deb
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Chill coma onset and recovery fail to reveal true variation in thermal performance among populations of Drosophila melanogaster

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