Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>

Temperature is a main driver of the ecology and evolution of ectotherms. In particular, the ability to move at sub-lethal low temperatures can be described through three thermal tolerance indices—critical thermal minimum (CTmin), chill coma temperature (CCT), and activity recovery (AR). Although the...

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Autores principales:	Michela Ion Scotta, Lucas Margris, Nadine Sellier, Sylvie Warot, Flavio Gatti, Fabio Siccardi, Patricia Gibert, Elodie Vercken, Nicolas Ris
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	chill coma temperature activity recovery critical thermal minimum local adaptation parasitoids thermal tolerance indices Science Q
Acceso en línea:	https://doaj.org/article/27821ec6b32a480fbaa79460aa734692
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spelling	oai:doaj.org-article:27821ec6b32a480fbaa79460aa7346922021-11-25T17:59:48ZGenetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>10.3390/insects121110132075-4450https://doaj.org/article/27821ec6b32a480fbaa79460aa7346922021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4450/12/11/1013https://doaj.org/toc/2075-4450Temperature is a main driver of the ecology and evolution of ectotherms. In particular, the ability to move at sub-lethal low temperatures can be described through three thermal tolerance indices—critical thermal minimum (CTmin), chill coma temperature (CCT), and activity recovery (AR). Although these indices have proven relevant for inter-specific comparisons, little is known about their intraspecific variability as well as possible genetic correlations between them. We thus investigated these two topics (intraspecific variability and genetic correlations between thermal tolerance indices) using the minute wasp, <i>Trichogramma cacoeciae</i>. Strains from <i>T. cacoeciae</i> were sampled across three geographic regions in France—two bioclimatic zones along a sharp altitudinal cline in a Mediterranean context (meso-Mediterranean at low elevations and supra-Mediterranean at higher elevations) and a more northwestern area characterized by continental or mountainous climates. Our results evidenced a significant effect of both the longitude and the severity of the cold during winter months on CCT. Results were however counter-intuitive since the strains from the two bioclimatic zones characterized by more severe winters (northwestern area and supra-Mediterranean) exhibited opposite patterns. In addition, a strong positive correlation was observed between CCT and CTmin. Neither strain differentiation nor the covariations between traits seem to be linked with the molecular diversity observed on the part of the mitochondrial marker COI.Michela Ion ScottaLucas MargrisNadine SellierSylvie WarotFlavio GattiFabio SiccardiPatricia GibertElodie VerckenNicolas RisMDPI AGarticlechill coma temperatureactivity recoverycritical thermal minimumlocal adaptationparasitoidsthermal tolerance indicesScienceQENInsects, Vol 12, Iss 1013, p 1013 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	chill coma temperature activity recovery critical thermal minimum local adaptation parasitoids thermal tolerance indices Science Q
spellingShingle	chill coma temperature activity recovery critical thermal minimum local adaptation parasitoids thermal tolerance indices Science Q Michela Ion Scotta Lucas Margris Nadine Sellier Sylvie Warot Flavio Gatti Fabio Siccardi Patricia Gibert Elodie Vercken Nicolas Ris Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>
description	Temperature is a main driver of the ecology and evolution of ectotherms. In particular, the ability to move at sub-lethal low temperatures can be described through three thermal tolerance indices—critical thermal minimum (CTmin), chill coma temperature (CCT), and activity recovery (AR). Although these indices have proven relevant for inter-specific comparisons, little is known about their intraspecific variability as well as possible genetic correlations between them. We thus investigated these two topics (intraspecific variability and genetic correlations between thermal tolerance indices) using the minute wasp, <i>Trichogramma cacoeciae</i>. Strains from <i>T. cacoeciae</i> were sampled across three geographic regions in France—two bioclimatic zones along a sharp altitudinal cline in a Mediterranean context (meso-Mediterranean at low elevations and supra-Mediterranean at higher elevations) and a more northwestern area characterized by continental or mountainous climates. Our results evidenced a significant effect of both the longitude and the severity of the cold during winter months on CCT. Results were however counter-intuitive since the strains from the two bioclimatic zones characterized by more severe winters (northwestern area and supra-Mediterranean) exhibited opposite patterns. In addition, a strong positive correlation was observed between CCT and CTmin. Neither strain differentiation nor the covariations between traits seem to be linked with the molecular diversity observed on the part of the mitochondrial marker COI.
format	article
author	Michela Ion Scotta Lucas Margris Nadine Sellier Sylvie Warot Flavio Gatti Fabio Siccardi Patricia Gibert Elodie Vercken Nicolas Ris
author_facet	Michela Ion Scotta Lucas Margris Nadine Sellier Sylvie Warot Flavio Gatti Fabio Siccardi Patricia Gibert Elodie Vercken Nicolas Ris
author_sort	Michela Ion Scotta
title	Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>
title_short	Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>
title_full	Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>
title_fullStr	Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>
title_full_unstemmed	Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>
title_sort	genetic variability, population differentiation, and correlations for thermal tolerance indices in the minute wasp, <i>trichogramma cacoeciae</i>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/27821ec6b32a480fbaa79460aa734692
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Genetic Variability, Population Differentiation, and Correlations for Thermal Tolerance Indices in the Minute Wasp, <i>Trichogramma cacoeciae</i>

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