Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii

Chill-coma recovery (CCR) is an important trait for thermal adaptation in insects. Multiple phenotypes could be affected by selection on CCR if the trait is genetically correlated with other adaptive traits. To test for heritable (co-)variation in CCR, we examined direct and correlated responses to...

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Autores principales: Bertoli, C.I., Scannapieco, A.C., Sambucetti, P., Norry, F.M.
Formato: JOUR
Materias:
Adaptation
Artificial selection
Cold-stress selection
Developmental time
Diptera
Drosophilidae
Heat knockdown resistance
Starvation resistance
Thorax length
Trade-offs
adaptation
cold tolerance
fly
heritability
high temperature
phenotypic plasticity
temperature effect
trade-off
Drosophila buzzatii
Hexapoda
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00138703_v134_n2_p154_Bertoli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00138703_v134_n2_p154_Bertoli2023-10-03T14:11:26Z Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii Bertoli, C.I. Scannapieco, A.C. Sambucetti, P. Norry, F.M. Adaptation Artificial selection Cold-stress selection Developmental time Diptera Drosophilidae Heat knockdown resistance Starvation resistance Thorax length Trade-offs adaptation cold tolerance fly heritability high temperature phenotypic plasticity temperature effect trade-off Diptera Drosophila buzzatii Drosophilidae Hexapoda Chill-coma recovery (CCR) is an important trait for thermal adaptation in insects. Multiple phenotypes could be affected by selection on CCR if the trait is genetically correlated with other adaptive traits. To test for heritable (co-)variation in CCR, we examined direct and correlated responses to bi-directional selection on CCR. Drosophila buzzatii Patterson & Wheeler (Diptera: Drosophilidae) was artificially selected for decreased and increased recovery time following exposure to 0 °C. After 18 selected generations, the selection response in CCR was significant but qualitatively asymmetric, with replicated lines for slow CCR showing the highest response. Knockdown resistance to high temperature was not affected by CCR selection. Starvation resistance in the adult fly showed no clear pattern of correlated responses to CCR selection. Selection on CCR had no impact on developmental time and body size. Chill-coma recovery shows no apparent genetic trade-offs with any of the multiple traits included in this study. These results are largely consistent with recent studies on clines in D. buzzatii, which showed that CCR is not across-population correlated with other clinally varying traits of thermal adaptation. Cold adaptation may evolve toward increased cold resistance independent of upper thermal limits. © 2010 The Netherlands Entomological Society. Fil:Bertoli, C.I. 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:Sambucetti, P. 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_00138703_v134_n2_p154_Bertoli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adaptation
Artificial selection
Cold-stress selection
Developmental time
Diptera
Drosophilidae
Heat knockdown resistance
Starvation resistance
Thorax length
Trade-offs
adaptation
cold tolerance
fly
heritability
high temperature
phenotypic plasticity
temperature effect
trade-off
Diptera
Drosophila buzzatii
Drosophilidae
Hexapoda
spellingShingle Adaptation
Artificial selection
Cold-stress selection
Developmental time
Diptera
Drosophilidae
Heat knockdown resistance
Starvation resistance
Thorax length
Trade-offs
adaptation
cold tolerance
fly
heritability
high temperature
phenotypic plasticity
temperature effect
trade-off
Diptera
Drosophila buzzatii
Drosophilidae
Hexapoda
Bertoli, C.I.
Scannapieco, A.C.
Sambucetti, P.
Norry, F.M.
Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii
topic_facet Adaptation
Artificial selection
Cold-stress selection
Developmental time
Diptera
Drosophilidae
Heat knockdown resistance
Starvation resistance
Thorax length
Trade-offs
adaptation
cold tolerance
fly
heritability
high temperature
phenotypic plasticity
temperature effect
trade-off
Diptera
Drosophila buzzatii
Drosophilidae
Hexapoda
description Chill-coma recovery (CCR) is an important trait for thermal adaptation in insects. Multiple phenotypes could be affected by selection on CCR if the trait is genetically correlated with other adaptive traits. To test for heritable (co-)variation in CCR, we examined direct and correlated responses to bi-directional selection on CCR. Drosophila buzzatii Patterson & Wheeler (Diptera: Drosophilidae) was artificially selected for decreased and increased recovery time following exposure to 0 °C. After 18 selected generations, the selection response in CCR was significant but qualitatively asymmetric, with replicated lines for slow CCR showing the highest response. Knockdown resistance to high temperature was not affected by CCR selection. Starvation resistance in the adult fly showed no clear pattern of correlated responses to CCR selection. Selection on CCR had no impact on developmental time and body size. Chill-coma recovery shows no apparent genetic trade-offs with any of the multiple traits included in this study. These results are largely consistent with recent studies on clines in D. buzzatii, which showed that CCR is not across-population correlated with other clinally varying traits of thermal adaptation. Cold adaptation may evolve toward increased cold resistance independent of upper thermal limits. © 2010 The Netherlands Entomological Society.
format JOUR
author Bertoli, C.I.
Scannapieco, A.C.
Sambucetti, P.
Norry, F.M.
author_facet Bertoli, C.I.
Scannapieco, A.C.
Sambucetti, P.
Norry, F.M.
author_sort Bertoli, C.I.
title Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii
title_short Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii
title_full Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii
title_fullStr Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii
title_full_unstemmed Direct and correlated responses to chill-coma recovery selection in Drosophila buzzatii
title_sort direct and correlated responses to chill-coma recovery selection in drosophila buzzatii
url http://hdl.handle.net/20.500.12110/paper_00138703_v134_n2_p154_Bertoli
work_keys_str_mv AT bertolici directandcorrelatedresponsestochillcomarecoveryselectionindrosophilabuzzatii
AT scannapiecoac directandcorrelatedresponsestochillcomarecoveryselectionindrosophilabuzzatii
AT sambucettip directandcorrelatedresponsestochillcomarecoveryselectionindrosophilabuzzatii
AT norryfm directandcorrelatedresponsestochillcomarecoveryselectionindrosophilabuzzatii
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