Direct and correlated responses to selection for longevity in Drosophila buzzatii

Mostrar todas las versiones(3)

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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Scannapieco, A.C., Sambucetti, P., Norry, F.M.
Formato: JOUR
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: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 todo:paper_00244066_v97_n4_p738_Scannapieco
record_format dspace
spelling todo:paper_00244066_v97_n4_p738_Scannapieco2023-10-03T14:35:01Z Direct and correlated responses to selection for longevity in Drosophila buzzatii Scannapieco, A.C. Sambucetti, P. Norry, F.M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, A.C.
Sambucetti, P.
Norry, F.M.
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.
format JOUR
author Scannapieco, A.C.
Sambucetti, P.
Norry, F.M.
author_facet Scannapieco, A.C.
Sambucetti, P.
Norry, F.M.
author_sort Scannapieco, A.C.
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
url http://hdl.handle.net/20.500.12110/paper_00244066_v97_n4_p738_Scannapieco
work_keys_str_mv AT scannapiecoac directandcorrelatedresponsestoselectionforlongevityindrosophilabuzzatii
AT sambucettip directandcorrelatedresponsestoselectionforlongevityindrosophilabuzzatii
AT norryfm directandcorrelatedresponsestoselectionforlongevityindrosophilabuzzatii
_version_ 1807319294650875904

Ejemplares similares