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首页> 外文期刊>Chelonian conservation and biology >Sexual Dimorphism in Body Size and Shape of Beal's Eyed Turtle (Sacalia bealei)
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Sexual Dimorphism in Body Size and Shape of Beal's Eyed Turtle (Sacalia bealei)

机译：比尔眼龟（Sacalia bealei）的身体大小和形状上的性别双态

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摘要

We studied the sexual dimorphism in body size and shape of Beal's eyed turtle, Sacalia bealei, by measuring 15 morphological characteristics of 68 adult individuals (40 females, 28 males) collected from Fujian Province, China. Females were slightly larger than males in carapace length with a sexual dimorphism index of 0.09. This translated into greater absolute values of females for all the traits we measured except for tail length, preanal tail length, and analia to supracaudal junction length. Comparisons between the sexes of size-corrected morphological traits indicated that females exhibited a longer plastron and higher carapace relative to carapace length, thereby providing a larger internal volume. Females also exhibited relatively wider heads. In males, the plastron was smaller and more indented than in females and the openings between the plastron and the carapace were also more developed. Overall, females were larger in size and displayed a more voluminous shell than did males while males had longer tails and larger spaces available to move the legs, head, and tail.
机译：我们通过测量从中国福建省采集的68名成年个体（40名女性，28名男性）的15种形态特征，研究了比尔的有眼乌龟Sacalia bealei的体型和性别上的性别差异。女性的甲壳长度略大于男性，性二态性指数为0.09。对于我们测量的所有性状，这转化为雌性的绝对值更高，除了尾巴长度，肛门前尾巴长度以及肛门上交界处的长度。尺寸校正的形态特征的性别之间的比较表明，相对于甲壳长度，雌性表现出更长的腹甲和更高的甲壳，从而提供了更大的内部体积。女性的头部也相对较宽。雄性male腹比雌性更小，更凹陷，并且in腹和甲壳之间的开口也更发达。总体而言，雌性个体比雄性个体更大，并且显示出更大的壳，而雄性个体具有更长的尾巴和更大的可移动腿，头和尾巴的空间。

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