| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2013-07-22 |
| タイトル |
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|
タイトル |
Intralocus sexual conflict unresolved by sex-limited trait expression |
| タイトル |
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タイトル |
Intralocus sexual conflict unresolved by sex-limited trait expression |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
| 著者 |
HARANO, Tomohiro
OKADA, Kensuke
NAKAYAMA, Satoshi
MIYATAKE, Takahisa
HOSKEN, David J
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| 著者別名 |
原野, 智広
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Sexually antagonistic selection generates intralocus sexual conflict, an evolutionary tug-of-war between males and females over optimal trait values [1-4]. Although the potential for this conflict is universal, the evolutionary importance of intralocus conflict is controversial because conflicts are typically thought to be resolvable through the evolution of sex-specific trait development [1-8]. However, whether sex-specific trait expression always resolves intralocus conflict has not been established. We assessed this with beetle populations subjected to bidirectional selection on an exaggerated sexually selected trait, the mandible. Mandibles are only ever developed in males for use in male-male combat, and larger mandibles increase male fitness (fighting [9, 10] and mating success, as we show here). We find that females from populations selected for larger male mandibles have lower fitness, whereas females in small-mandible populations have highest fitness, even though females never develop exaggerated mandibles. This is because mandible development changes genetically correlated characters, resulting in a negative intersexual fitness correlation across these populations, which is the unmistakable signature of intralocus sexual conflict [1]. Our results show that sex-limited trait development need not resolve intralocus sexual conflict, because traits are rarely, if ever, genetically independent of other characters [11]. Hence, intralocus conflict resolution is not as easy as currently thought. |
| 書誌情報 |
Current Biology
en : Current Biology
巻 20,
号 22,
p. 2036-2039,
発行日 2010-11
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| 出版者 |
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出版者 |
Elsevier |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
09609822 |
| PubMed番号 |
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識別子タイプ |
PMID |
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関連識別子 |
21055943 |
| DOI |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1016/j.cub.2010.10.023 |
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関連名称 |
10.1016/j.cub.2010.10.023 |
| 権利 |
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権利情報 |
© 2010 Elsevier Ltd. |
