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Is sexual size dimorphism similar irrespective of the origin of the goose breed?

机译：不论鹅的起源如何，性别大小二态性是否相似？

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Sexual dimorphism, defined as a phenotypic difference between males and females of a particular species, is a common phenomenon in animals. Rensch's rule describes the pattern of sexual size dimorphism (SSD) and claims that larger species generally exhibit higher male to female body size ratios. Domesticated animals offer excellent opportunities for testing predictions of functional explanations of Rensch's theory. In this paper, predictions were tested in geese by evaluating SSD in 70 breeds of domestic geese from different geographic origins (34 from Asian origin and 36 from European origin) which were compared to their wild relatives (genus Anser, 12 species). The data indicated that the body mass of different goose breeds were consistent with the Rensch's rule, where the allometry of SSD was significantly positive. Second, despite varying selective forces, scaling of SSD with body mass did not diverge according to breed origins (Anser anser and A. cygnoides groups).
机译：性二态性定义为特定物种的雄性和雌性之间的表型差异，是动物中的常见现象。 Rensch的规则描述了性大小二态性（SSD）的模式，并声称较大的物种通常表现出较高的男女比例。驯养的动物为检验Rensch理论的功能解释的预测提供了极好的机会。在本文中，通过评估70种不同地理来源的家鹅（亚洲来源的34种来自欧洲，欧洲来源的​​36种）的家养鹅与野生亲缘种（Anser属12种）进行比较，对鹅的预测进行了检验。数据表明，不同鹅品种的体重符合伦施法则，其中SSD的异速计显着呈阳性。其次，尽管选择力有所不同，但SSD随体重变化的比例并没有根据品种起源而有所不同（Anser anser和A. cygnoides组）。

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