Feeding ecology and sexual dimorphism in a speciose flower beetle clade (Hopliini: Scarabaeidae).
Feeding ecology and sexual dimorphism in a speciose flower beetle clade (Hopliini: Scarabaeidae).
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在特定的花甲虫进化枝（Hopliini：scarabaeidae）中进食生态和性二态性。
作者：
Colville JF;Picker MD;Cowling RM
在南非猴甲虫进化枝中研究了摄食生态与性二态性之间的关系。我们测试了在固定地点（嵌入行会）的进食和交配是否与使用不可预测的进食资源（非嵌入行会）的物种相比，与更高水平的性二态性和可能的性选择相关。使用后腿评分系统和颜色对两个饲养协会> 50%的区域动物群的性别二态性进行测量。使用评分系统和异速生长缩放对后腿二态性进行量化来识别受性选择影响的性状。喂养行会对后腿二态性有显着影响，包埋者得分高，非嵌入者得分低。雌性在稳定的平台花上的无柄和可防御的分布可能有利于竞争和相关的后腿武器。相比之下，两性之间颜色二态性的程度与任何特定的喂养行会无关，并且可能有助于减少雄性冲突和战斗。包埋雄性在几乎所有后腿性状中具有高比例（∼76%）具有正异速斜率的物种。对于雄性非嵌入者，只有 ∼37% 的物种表现出正比例关系。需要系统发育数据，结合有关雄性腿部武器和视觉信号功能的行为数据，才能更好地了解猴甲虫辐射中的性二态性和性选择之间的联系。
The relationship between feeding ecology and sexual dimorphism is examined in a speciose South African monkey beetle clade. We test whether feeding and mating at a fixed site (embedding guild) is associated with greater levels of sexual dimorphism and possibly sexual selection than species using unpredictable feeding resources (non-embedding guild). Sexual dimorphism was measured using a point scoring system for hind leg and colour across the two feeding guilds for >50% of the regional fauna. Quantification of hind leg dimorphism using a scoring system and allometric scaling were used to identify traits subject to sexual selection. Feeding guild had a significant effect on hind leg dimorphism, with embedders having high and non-embedders low scores. The sessile and defendable distribution of females on stable platform flowers may favour contests and associated hind leg weaponry. In contrast, degree of colour dimorphism between the sexes was not associated with any particular feeding guild, and may serve to reduce male conflict and combat. Embedder males had high proportions (∼76%) of species with positive allometric slopes for almost all hind leg traits. For male non-embedders, only ∼37% of species showed positive scaling relationships. Phylogenetic data, in conjunction with behavioural data on the function of leg weaponry and visual signalling among males is needed to better understand the link between sexual dimorphism and sexual selection in the radiation of the monkey beetles.
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影响因子：
3.4
作者：
Colville, J;Picker, MD;Cowling, RM
通讯作者：
Cowling, RM
DOI：
10.1098/rspb.1995.0031
发表时间：
1995-02-22
影响因子：
4.7
作者：
BARRACLOUGH, TG;HARVEY, PH;NEE, S
通讯作者：
NEE, S
影响因子：
4.1
作者：
Ahrens, Dirk;Scott, Michelle;Vogler, Alfried P.
通讯作者：
Vogler, Alfried P.
影响因子：
2.9
作者：
Cooper, Idelle A.
通讯作者：
Cooper, Idelle A.
影响因子：
3.3
作者：
Bonduriansky, Russell
通讯作者：
Bonduriansky, Russell