Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii
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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00143820_v56_n12_p2541_Cortese https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00143820_v56_n12_p2541_Cortese_oai |
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I28-R145-paper_00143820_v56_n12_p2541_Cortese_oai2024-08-16 Cortese, M.D. Norry, F.M. Piccinali, R. Hasson, E. 2002 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. application/pdf http://hdl.handle.net/20.500.12110/paper_00143820_v56_n12_p2541_Cortese info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Evolution 2002;56(12):2541-2547 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 Direct and correlated responses to artificial selection on developmental time and wing length in Drosophila buzzatii info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00143820_v56_n12_p2541_Cortese_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| 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 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00143820_v56_n12_p2541_Cortese_oai |
| work_keys_str_mv |
AT cortesemd directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii AT norryfm directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii AT piccinalir directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii AT hassone directandcorrelatedresponsestoartificialselectionondevelopmentaltimeandwinglengthindrosophilabuzzatii |
| _version_ |
1809357191454392320 |