Patterns of sexual size dimorphism in horseshoe bats: Testing Rensch's rule and potential causes.
Patterns of sexual size dimorphism in horseshoe bats: Testing Rensch's rule and potential causes.
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马蹄蝠的性别大小二态性模式：测试伦施规则和潜在原因
DOI：
10.1038/s41598-018-21077-7
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发表时间：
2018-02-08
影响因子：
4.6
通讯作者：
Feng J
中科院分区：
文献类型：
--
作者：
Wu H;Jiang T;Huang X;Feng J
Rensch 的规则指出，随着体型的增加，性别尺寸二态性 (SSD) 变得更加明显且雄性偏向，这一规则得到了表现出雄性偏向 SSD 的分类群的充分支持。蝙蝠主要具有雌性偏向的SSD，迄今为止仅在三项研究中测试了SSD异速生长是否符合伦施规则。然而，这些研究没有考虑系统发育，因此蝙蝠 SSD 变异的机制仍不清楚。因此，本研究回顾了已发表的原始数据，包括 45 种菊头蝠科蝙蝠的体型大小、阴茎骨大小和栖息地类型，以使用系统发育比较框架来确定马蹄蝠是否遵循 Rensch 规则。我们还研究了交配后性选择和栖息地类型对 SSD 的潜在影响。我们的研究结果表明，Rensch 规则不适用于犀牛科，这表明 SSD 不会随着体型的增加而发生显着变化。这种模式可能归因于男性体型的弱性选择和女性体型的强生育力选择之间的相互作用。马蹄蝠的 SSD 程度可能归因于系统发育效应，而不是两性间对食物的竞争或阴茎骨长度。有趣的是，我们观察到开放栖息地的物种比茂密森林中的物种表现出更大的 SSD，这表明栖息地类型可能与马蹄蝠的 SSD 变化有关。
Rensch’s rule, stating that sexual size dimorphism (SSD) becomes more evident and male-biased with increasing body size, has been well supported for taxa that exhibit male-biased SSD. Bats, primarily having female-biased SSD, have so far been tested for whether SSD allometry conforms to Rensch’s rule in only three studies. However, these studies did not consider phylogeny, and thus the mechanisms underlying SSD variations in bats remain unclear. Thus, the present study reviewed published and original data, including body size, baculum size, and habitat types in 45 bats of the family Rhinolophidae to determine whether horseshoe bats follow Rensch’s rule using a phylogenetic comparative framework. We also investigated the potential effect of postcopulatory sexual selection and habitat type on SSD. Our findings indicated that Rensch’s rule did not apply to Rhinolophidae, suggesting that SSD did not significantly vary with increasing size. This pattern may be attributable interactions between weak sexual selection to male body size and strong fecundity selection for on female body size. The degree of SSD among horseshoe bats may be attributed to a phylogenetic effect rather than to the intersexual competition for food or to baculum length. Interestingly, we observed that species in open habitats exhibited greater SSD than those in dense forests, suggesting that habitat types may be associated with variations in SSD in horseshoe bats.
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影响因子：
3.3
作者：
CHEVERUD, JM;DOW, MM;LEUTENEGGER, W
通讯作者：
LEUTENEGGER, W
影响因子：
2.9
作者：
Blanckenhorn, Wolf U.;Dixon, Anthony F. G.;Wiklund, Christer
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Wiklund, Christer
影响因子：
2.1
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BJORKLUND, M
通讯作者：
BJORKLUND, M
影响因子：
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BERRY, JF;SHINE, R
通讯作者：
SHINE, R
影响因子：
3.3
作者：
Butler, MA;Schoener, TW;Losos, JB
通讯作者：
Losos, JB