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首页> 外文期刊>New Zealand Journal of Zoology >Ruling out the boys from the girls: Can subtle morphological differences identify sex of the apparently monomorphic frog, Leiopelma pakeka?
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Ruling out the boys from the girls: Can subtle morphological differences identify sex of the apparently monomorphic frog, Leiopelma pakeka?

机译：从女孩中排除男孩：微妙的形态差异是否可以识别出明显单态的青蛙Leiopelma pakeka的性别？

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摘要

New Zealand's endemic leiopelmatid frogs are all threatened with extinction. There is no obvious physical or behavioural difference between males and females of three of the four species and this lack of a sex identification technique is hindering conservation management. Twenty-one morphological features were measured for 67 live Leiopelma pakeka of known sex to determine whether a slight morphological difference existed that could be used for sex identification. Females were significantly longer in snout-to-vent length (SVL) than males, but as a great deal of overlap exists between sexes, this is not an ideal sex identification trait. No other physical characteristic was significantly different between sexes when adjusted for SVL. Discriminant analysis using a suite of traits was also unable to discriminate between sexes for frogs in the male-female overlap size range. The measurement of physical characteristics is inadequate for identifying sex in L.pakeka and other methods for sex identification must be developed. The reasons for the lack of sexual difference are unknown.
机译：新西兰的地方性类脂pel蛙都面临灭绝的威胁。四个物种中的三个物种的雄性和雌性之间没有明显的身体或行为差异，并且缺乏性别识别技术阻碍了养护管理。测量了67个已知性别的活Leiopelma pakeka的21个形态特征，以确定是否存在可以用于性别鉴定的轻微形态差异。女性的鼻子到呼吸长度（SVL）明显长于男性，但是由于性别之间存在大量重叠，所以这不是理想的性别识别特征。调整SVL后，性别之间的其他身体特征无明显差异。使用一系列特征的判别分析也无法区分青蛙在男女重叠范围内的性别。物理特征的测量不足以鉴定L.pakeka中的性别，因此必须开发其他鉴定性别的方法。缺乏性别差异的原因尚不清楚。

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