Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii

Knockdown resistance to high temperature (KRHT) is a genetically variable trait for thermal adaptation in insects. Selection for KRHT may affect a number of fitness components as well as resistance to several forms of environmental stress. To test for heritable (co)-variation in KRHT, we examined di...

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Autores principales:	Sambucetti, Pablo Daniel, Scannapieco, Alejandra Carla, Norry, Fabian Marcelo
Publicado:	2010
Materias:	Body size Chill-coma recovery Developmental time Heat-stress selection Starvation resistance Thermal adaptation animal experiment article artificial selection body size chill coma recovery cold exposure controlled study developmental stage developmental time Drosophila drosophila buzzatii female genetic trait heat tolerance heritability high temperature insect development male nonhuman starvation time Drosophila buzzatii Hexapoda
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03064565_v35_n5_p232_Sambucetti http://hdl.handle.net/20.500.12110/paper_03064565_v35_n5_p232_Sambucetti
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03064565_v35_n5_p232_Sambucetti
record_format	dspace
spelling	paper:paper_03064565_v35_n5_p232_Sambucetti2023-06-08T15:31:22Z Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii Sambucetti, Pablo Daniel Scannapieco, Alejandra Carla Norry, Fabian Marcelo Body size Chill-coma recovery Developmental time Heat-stress selection Starvation resistance Thermal adaptation animal experiment article artificial selection body size chill coma recovery cold exposure controlled study developmental stage developmental time Drosophila drosophila buzzatii female genetic trait heat tolerance heritability high temperature insect development male nonhuman starvation time Drosophila buzzatii Hexapoda Knockdown resistance to high temperature (KRHT) is a genetically variable trait for thermal adaptation in insects. Selection for KRHT may affect a number of fitness components as well as resistance to several forms of environmental stress. To test for heritable (co)-variation in KRHT, we examined direct and correlated responses to bi-directional selection on this trait in Drosophila buzzatii. Replicated lines were artificially selected for decreased and increased KRHT. After 12 generations of artificial selection, lines diverged significantly for high KRHT only. Starvation resistance increased in two lines that strongly responded to selection for high KRHT, and these two lines also showed relatively longer chill-coma recovery time. Developmental time and body size showed no correlated responses to KRHT-selection. These results suggest that KRHT is a heritable trait that can evolve towards increased thermotolerance with no genetic trade-offs associated to starvation resistance, developmental time and body size. © 2010 Elsevier Ltd. Fil:Sambucetti, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scannapieco, A.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Norry, F.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03064565_v35_n5_p232_Sambucetti http://hdl.handle.net/20.500.12110/paper_03064565_v35_n5_p232_Sambucetti
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Body size Chill-coma recovery Developmental time Heat-stress selection Starvation resistance Thermal adaptation animal experiment article artificial selection body size chill coma recovery cold exposure controlled study developmental stage developmental time Drosophila drosophila buzzatii female genetic trait heat tolerance heritability high temperature insect development male nonhuman starvation time Drosophila buzzatii Hexapoda
spellingShingle	Body size Chill-coma recovery Developmental time Heat-stress selection Starvation resistance Thermal adaptation animal experiment article artificial selection body size chill coma recovery cold exposure controlled study developmental stage developmental time Drosophila drosophila buzzatii female genetic trait heat tolerance heritability high temperature insect development male nonhuman starvation time Drosophila buzzatii Hexapoda Sambucetti, Pablo Daniel Scannapieco, Alejandra Carla Norry, Fabian Marcelo Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii
topic_facet	Body size Chill-coma recovery Developmental time Heat-stress selection Starvation resistance Thermal adaptation animal experiment article artificial selection body size chill coma recovery cold exposure controlled study developmental stage developmental time Drosophila drosophila buzzatii female genetic trait heat tolerance heritability high temperature insect development male nonhuman starvation time Drosophila buzzatii Hexapoda
description	Knockdown resistance to high temperature (KRHT) is a genetically variable trait for thermal adaptation in insects. Selection for KRHT may affect a number of fitness components as well as resistance to several forms of environmental stress. To test for heritable (co)-variation in KRHT, we examined direct and correlated responses to bi-directional selection on this trait in Drosophila buzzatii. Replicated lines were artificially selected for decreased and increased KRHT. After 12 generations of artificial selection, lines diverged significantly for high KRHT only. Starvation resistance increased in two lines that strongly responded to selection for high KRHT, and these two lines also showed relatively longer chill-coma recovery time. Developmental time and body size showed no correlated responses to KRHT-selection. These results suggest that KRHT is a heritable trait that can evolve towards increased thermotolerance with no genetic trade-offs associated to starvation resistance, developmental time and body size. © 2010 Elsevier Ltd.
author	Sambucetti, Pablo Daniel Scannapieco, Alejandra Carla Norry, Fabian Marcelo
author_facet	Sambucetti, Pablo Daniel Scannapieco, Alejandra Carla Norry, Fabian Marcelo
author_sort	Sambucetti, Pablo Daniel
title	Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii
title_short	Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii
title_full	Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii
title_fullStr	Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii
title_full_unstemmed	Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii
title_sort	direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in drosophila buzzatii
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03064565_v35_n5_p232_Sambucetti http://hdl.handle.net/20.500.12110/paper_03064565_v35_n5_p232_Sambucetti
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_version_	1768543561488269312

Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii

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