No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster.
A key assumption underpinning major models of sexual selection is the expectation that male sexual attractiveness is heritable. Surprisingly, however, empirical tests of this assumption are relatively scarce. Here we use a paternal full-sib/half-sib breeding design to examine genetic and environment...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3796456?pdf=render |
| _version_ | 1818135308723552256 |
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| author | Michelle L Taylor Jonathan P Evans Francisco Garcia-Gonzalez |
| author_facet | Michelle L Taylor Jonathan P Evans Francisco Garcia-Gonzalez |
| author_sort | Michelle L Taylor |
| collection | DOAJ |
| description | A key assumption underpinning major models of sexual selection is the expectation that male sexual attractiveness is heritable. Surprisingly, however, empirical tests of this assumption are relatively scarce. Here we use a paternal full-sib/half-sib breeding design to examine genetic and environmental variation in male mating latency (a proxy for sexual attractiveness) and copulation duration in a natural population of Drosophila melanogaster. As our experimental design also involved the manipulation of the social environment within each full-sibling family, we were able to further test for the presence of genotype-by-environment interactions (GEIs) in these traits, which have the potential to compromise mate choice for genetic benefits. Our experimental manipulation of the social environment revealed plastic expression of both traits; males exposed to a rival male during the sensitive period of adult sexual maturation exhibited shorter mating latencies and longer copulation durations than those who matured in isolation. However, we found no evidence for GEIs, and no significant additive genetic variation underlying these traits in either environment. These results undermine the notion that the evolution of female choice rests on covariance between female preference and male displays, an expectation that underpins indirect benefit models such as the good genes and sexy sons hypotheses. However, our results may also indicate depletion of genetic variance in these traits in the natural population studied, thus supporting the expectation that traits closely aligned with reproductive fitness can exhibit low levels of additive genetic variance. |
| first_indexed | 2024-12-11T09:22:27Z |
| format | Article |
| id | doaj.art-4bb91e93751641229d93cd6e52245b57 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-11T09:22:27Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-4bb91e93751641229d93cd6e52245b572022-12-22T01:13:13ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-01810e7734710.1371/journal.pone.0077347No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster.Michelle L TaylorJonathan P EvansFrancisco Garcia-GonzalezA key assumption underpinning major models of sexual selection is the expectation that male sexual attractiveness is heritable. Surprisingly, however, empirical tests of this assumption are relatively scarce. Here we use a paternal full-sib/half-sib breeding design to examine genetic and environmental variation in male mating latency (a proxy for sexual attractiveness) and copulation duration in a natural population of Drosophila melanogaster. As our experimental design also involved the manipulation of the social environment within each full-sibling family, we were able to further test for the presence of genotype-by-environment interactions (GEIs) in these traits, which have the potential to compromise mate choice for genetic benefits. Our experimental manipulation of the social environment revealed plastic expression of both traits; males exposed to a rival male during the sensitive period of adult sexual maturation exhibited shorter mating latencies and longer copulation durations than those who matured in isolation. However, we found no evidence for GEIs, and no significant additive genetic variation underlying these traits in either environment. These results undermine the notion that the evolution of female choice rests on covariance between female preference and male displays, an expectation that underpins indirect benefit models such as the good genes and sexy sons hypotheses. However, our results may also indicate depletion of genetic variance in these traits in the natural population studied, thus supporting the expectation that traits closely aligned with reproductive fitness can exhibit low levels of additive genetic variance.http://europepmc.org/articles/PMC3796456?pdf=render |
| spellingShingle | Michelle L Taylor Jonathan P Evans Francisco Garcia-Gonzalez No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster. PLoS ONE |
| title | No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster. |
| title_full | No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster. |
| title_fullStr | No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster. |
| title_full_unstemmed | No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster. |
| title_short | No evidence for heritability of male mating latency or copulation duration across social environments in Drosophila melanogaster. |
| title_sort | no evidence for heritability of male mating latency or copulation duration across social environments in drosophila melanogaster |
| url | http://europepmc.org/articles/PMC3796456?pdf=render |
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