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, P., Scannapieco, A.C., Norry, F.M.
Formato: JOUR
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: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 todo:paper_03064565_v35_n5_p232_Sambucetti
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spelling todo:paper_03064565_v35_n5_p232_Sambucetti2023-10-03T15:22:32Z Direct and correlated responses to artificial selection for high and low knockdown resistance to high temperature in Drosophila buzzatii Sambucetti, P. Scannapieco, A.C. Norry, F.M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, P.
Scannapieco, A.C.
Norry, F.M.
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.
format JOUR
author Sambucetti, P.
Scannapieco, A.C.
Norry, F.M.
author_facet Sambucetti, P.
Scannapieco, A.C.
Norry, F.M.
author_sort Sambucetti, P.
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
url http://hdl.handle.net/20.500.12110/paper_03064565_v35_n5_p232_Sambucetti
work_keys_str_mv AT sambucettip directandcorrelatedresponsestoartificialselectionforhighandlowknockdownresistancetohightemperatureindrosophilabuzzatii
AT scannapiecoac directandcorrelatedresponsestoartificialselectionforhighandlowknockdownresistancetohightemperatureindrosophilabuzzatii
AT norryfm directandcorrelatedresponsestoartificialselectionforhighandlowknockdownresistancetohightemperatureindrosophilabuzzatii
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