Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii

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Developmental time and body size are two positively correlated traits closely related to fitness in many organisms including Drosophila. Previous work suggested that these two traits are involved in a trade-off that may result from a negative genetic correlation between their effects on pre-adult an...

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Autores principales:	Cortese, M.D., Norry, F.M., Piccinali, R., Hasson, E.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2002
Materias:	Antagonistic pleiotropy Body size Developmental rate Genotype-by-environment interaction Pre-adult viability Trade-off body size developmental biology fitness selection trade-off wing morphology analysis of variance animal article body constitution Drosophila female forelimb genetic selection genetic variability genetics growth, development and aging histology male time Analysis of Variance Animals Body Constitution Female Male Selection (Genetics) Time Factors Variation (Genetics) Wing Animalia Diptera Drosophila buzzatii Drosophilidae Invertebrata
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00143820_v56_n12_p2541_Cortese
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paperaa:paper_00143820_v56_n12_p2541_Cortese2023-06-12T16:41:42Z Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii Evolution 2002;56(12):2541-2547 Cortese, M.D. Norry, F.M. Piccinali, R. Hasson, E. Antagonistic pleiotropy Body size Developmental rate Genotype-by-environment interaction Pre-adult viability Trade-off body size developmental biology fitness selection trade-off wing morphology analysis of variance animal article body constitution Drosophila female forelimb genetic selection genetic variability genetics growth, development and aging histology male time Analysis of Variance Animals Body Constitution Drosophila Female Male Selection (Genetics) Time Factors Variation (Genetics) Wing Animalia Diptera Drosophila buzzatii Drosophilidae Invertebrata Developmental time and body size are two positively correlated traits closely related to fitness in many organisms including Drosophila. Previous work suggested that these two traits are involved in a trade-off that may result from a negative genetic correlation between their effects on pre-adult and adult fitness. Here, we examine the evolution of developmental time and body size (indexed by wing length) under artificial Selection applied to one or both traits in replicated D. buzzatii populations. Directional changes in both developmental time and wing length indicate the presence of substantial additive genetic variance for both traits. The strongest response to selection for fast development was found in lines selected simultaneously to reduce both developmental time and wing length, probably as an expected consequence of a synergistic effect of indirect selection. When selection was applied in the direction opposite to the putative genetic correlation, that is, large wing length but fast development, no responses were observed for developmental time. Lines selected to reduce both wing length and developmental time diverged slightly faster from the control than lines selected to increase wing length and reduce developmental time. However, wing length did not diverge from the control in lines selected only for fast development. These results suggest a complex genetic basis of the correlation between developmental time and wing length, but are generally consistent with the hypothesis that both traits are related in a trade-off. However, we found that this trade-off may disappear under uncrowded conditions, with fast-developing lines exhibiting a higher pre-adult viability than other lines when tested at high larval density. Fil:Norry, F.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Piccinali, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00143820_v56_n12_p2541_Cortese
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Inglés
orig_language_str_mv	eng
topic	Antagonistic pleiotropy Body size Developmental rate Genotype-by-environment interaction Pre-adult viability Trade-off body size developmental biology fitness selection trade-off wing morphology analysis of variance animal article body constitution Drosophila female forelimb genetic selection genetic variability genetics growth, development and aging histology male time Analysis of Variance Animals Body Constitution Drosophila Female Male Selection (Genetics) Time Factors Variation (Genetics) Wing Animalia Diptera Drosophila buzzatii Drosophilidae Invertebrata
spellingShingle	Antagonistic pleiotropy Body size Developmental rate Genotype-by-environment interaction Pre-adult viability Trade-off body size developmental biology fitness selection trade-off wing morphology analysis of variance animal article body constitution Drosophila female forelimb genetic selection genetic variability genetics growth, development and aging histology male time Analysis of Variance Animals Body Constitution Drosophila Female Male Selection (Genetics) Time Factors Variation (Genetics) Wing Animalia Diptera Drosophila buzzatii Drosophilidae Invertebrata Cortese, M.D. Norry, F.M. Piccinali, R. Hasson, E. Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii
topic_facet	Antagonistic pleiotropy Body size Developmental rate Genotype-by-environment interaction Pre-adult viability Trade-off body size developmental biology fitness selection trade-off wing morphology analysis of variance animal article body constitution Drosophila female forelimb genetic selection genetic variability genetics growth, development and aging histology male time Analysis of Variance Animals Body Constitution Drosophila Female Male Selection (Genetics) Time Factors Variation (Genetics) Wing Animalia Diptera Drosophila buzzatii Drosophilidae Invertebrata
description	Developmental time and body size are two positively correlated traits closely related to fitness in many organisms including Drosophila. Previous work suggested that these two traits are involved in a trade-off that may result from a negative genetic correlation between their effects on pre-adult and adult fitness. Here, we examine the evolution of developmental time and body size (indexed by wing length) under artificial Selection applied to one or both traits in replicated D. buzzatii populations. Directional changes in both developmental time and wing length indicate the presence of substantial additive genetic variance for both traits. The strongest response to selection for fast development was found in lines selected simultaneously to reduce both developmental time and wing length, probably as an expected consequence of a synergistic effect of indirect selection. When selection was applied in the direction opposite to the putative genetic correlation, that is, large wing length but fast development, no responses were observed for developmental time. Lines selected to reduce both wing length and developmental time diverged slightly faster from the control than lines selected to increase wing length and reduce developmental time. However, wing length did not diverge from the control in lines selected only for fast development. These results suggest a complex genetic basis of the correlation between developmental time and wing length, but are generally consistent with the hypothesis that both traits are related in a trade-off. However, we found that this trade-off may disappear under uncrowded conditions, with fast-developing lines exhibiting a higher pre-adult viability than other lines when tested at high larval density.
format	Artículo Artículo publishedVersion
author	Cortese, M.D. Norry, F.M. Piccinali, R. Hasson, E.
author_facet	Cortese, M.D. Norry, F.M. Piccinali, R. Hasson, E.
author_sort	Cortese, M.D.
title	Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii
title_short	Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii
title_full	Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii
title_fullStr	Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii
title_full_unstemmed	Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii
title_sort	direct and correlated responses to artificial selection on developmental time and wing length in drosophila buzzatii
publishDate	2002
url	http://hdl.handle.net/20.500.12110/paper_00143820_v56_n12_p2541_Cortese
work_keys_str_mv	AT cortesemd directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii AT norryfm directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii AT piccinalir directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii AT hassone directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii
_version_	1769810263187390464

Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii

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