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性二态性:非洲羚羊的角。

Sexual dimorphism: the horns of african antelopes.

出版信息

Science. 1983 Sep 16;221(4616):1191-3. doi: 10.1126/science.221.4616.1191.

Abstract

Comparisons of the horns of males and females across genera of African antelopes indicate that male horns are better adapted for clashing or pushing against another pair of horns during intrasexual combat. The horns of females are relatively more specialized as stabbing weapons. Horns in females are found in only half the genera and in those genera where females have horns, the genera are heavier than genera with hornless females.

摘要

对非洲羚羊属间雌雄个体角的比较表明,雄性角更适合在种内争斗中与另一对角发生碰撞或推顶。雌性角则相对更专门化,用作刺杀武器。只有一半的属具有雌性角,而在具有雌性角的属中,这些属的体重比没有雌性角的属重。

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