Direct and correlated responses to selection for longevity in Drosophila buzzatii

The possible associations between longevity, early fecundity, and stress-resistance traits were explored using artificial selection on longevity in a laboratory population of Drosophila buzzatii. Three replicated lines were selected for increased lifespan (L lines) and compared with the respective u...

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Autores principales:	Scannapieco, Alejandra Carla, Sambucetti, Pablo Daniel, Norry, Fabian Marcelo
Publicado:	2009
Materias:	Chill-coma recovery Cline Early fecundity Heat knockdown resistance Longevity selection Senescence Starvation Trade-off biological development cline community response correlation fecundity fly longevity mortality population density selection starvation Drosophila buzzatii
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v97_n4_p738_Scannapieco http://hdl.handle.net/20.500.12110/paper_00244066_v97_n4_p738_Scannapieco
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00244066_v97_n4_p738_Scannapieco
record_format	dspace
spelling	paper:paper_00244066_v97_n4_p738_Scannapieco2023-06-08T14:52:18Z Direct and correlated responses to selection for longevity in Drosophila buzzatii Scannapieco, Alejandra Carla Sambucetti, Pablo Daniel Norry, Fabian Marcelo Chill-coma recovery Cline Early fecundity Heat knockdown resistance Longevity selection Senescence Starvation Trade-off biological development cline community response correlation fecundity fly longevity mortality population density selection starvation Drosophila buzzatii The possible associations between longevity, early fecundity, and stress-resistance traits were explored using artificial selection on longevity in a laboratory population of Drosophila buzzatii. Three replicated lines were selected for increased lifespan (L lines) and compared with the respective unselected controls (C lines) after the 14th generation of selection. Mean longevity exhibited a significant response to selection. The baseline mortality tended to decrease in the L lines and a negative correlated response to longevity selection was found for early fecundity. Egg-to-adult developmental time increased in L lines. Longevity selection increased stress resistance for both high and low temperatures, as measured by heat knockdown resistance and chill-coma recovery. Starvation resistance also tended to be higher in L than in C lines. The results obtained are consistent with the hypothesis of trade-offs between longevity and early fecundity, and also suggest a trade-off association between adult longevity and developmental time. Correlated selection responses were generally consistent with correlations among the traits previously inferred from altitudinal clines for longevity and stress-resistance phenotypes. © 2009 The Linnean Society of London. 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. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v97_n4_p738_Scannapieco http://hdl.handle.net/20.500.12110/paper_00244066_v97_n4_p738_Scannapieco
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chill-coma recovery Cline Early fecundity Heat knockdown resistance Longevity selection Senescence Starvation Trade-off biological development cline community response correlation fecundity fly longevity mortality population density selection starvation Drosophila buzzatii
spellingShingle	Chill-coma recovery Cline Early fecundity Heat knockdown resistance Longevity selection Senescence Starvation Trade-off biological development cline community response correlation fecundity fly longevity mortality population density selection starvation Drosophila buzzatii Scannapieco, Alejandra Carla Sambucetti, Pablo Daniel Norry, Fabian Marcelo Direct and correlated responses to selection for longevity in Drosophila buzzatii
topic_facet	Chill-coma recovery Cline Early fecundity Heat knockdown resistance Longevity selection Senescence Starvation Trade-off biological development cline community response correlation fecundity fly longevity mortality population density selection starvation Drosophila buzzatii
description	The possible associations between longevity, early fecundity, and stress-resistance traits were explored using artificial selection on longevity in a laboratory population of Drosophila buzzatii. Three replicated lines were selected for increased lifespan (L lines) and compared with the respective unselected controls (C lines) after the 14th generation of selection. Mean longevity exhibited a significant response to selection. The baseline mortality tended to decrease in the L lines and a negative correlated response to longevity selection was found for early fecundity. Egg-to-adult developmental time increased in L lines. Longevity selection increased stress resistance for both high and low temperatures, as measured by heat knockdown resistance and chill-coma recovery. Starvation resistance also tended to be higher in L than in C lines. The results obtained are consistent with the hypothesis of trade-offs between longevity and early fecundity, and also suggest a trade-off association between adult longevity and developmental time. Correlated selection responses were generally consistent with correlations among the traits previously inferred from altitudinal clines for longevity and stress-resistance phenotypes. © 2009 The Linnean Society of London.
author	Scannapieco, Alejandra Carla Sambucetti, Pablo Daniel Norry, Fabian Marcelo
author_facet	Scannapieco, Alejandra Carla Sambucetti, Pablo Daniel Norry, Fabian Marcelo
author_sort	Scannapieco, Alejandra Carla
title	Direct and correlated responses to selection for longevity in Drosophila buzzatii
title_short	Direct and correlated responses to selection for longevity in Drosophila buzzatii
title_full	Direct and correlated responses to selection for longevity in Drosophila buzzatii
title_fullStr	Direct and correlated responses to selection for longevity in Drosophila buzzatii
title_full_unstemmed	Direct and correlated responses to selection for longevity in Drosophila buzzatii
title_sort	direct and correlated responses to selection for longevity in drosophila buzzatii
publishDate	2009
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v97_n4_p738_Scannapieco http://hdl.handle.net/20.500.12110/paper_00244066_v97_n4_p738_Scannapieco
work_keys_str_mv	AT scannapiecoalejandracarla directandcorrelatedresponsestoselectionforlongevityindrosophilabuzzatii AT sambucettipablodaniel directandcorrelatedresponsestoselectionforlongevityindrosophilabuzzatii AT norryfabianmarcelo directandcorrelatedresponsestoselectionforlongevityindrosophilabuzzatii
_version_	1768542023568064512

Direct and correlated responses to selection for longevity in Drosophila buzzatii

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