伊朗西部毛猴性别二型性的研究(毛猴亚纲:毛猴科)

B. Fathinia, R. Karamiani, N. Rastegar-Pouyani, H. Darvishnia
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摘要

叶蟾蜍壁虎分布在中东的一些地区,其独特的特征是腔囊和后骨缺失。Asaccus属包括19种,其中至少有10种分布在伊朗的扎格罗斯山脉。两性体型二态性(SSD)是同一物种雄性和雌性之间的体型差异,是爬行动物中普遍存在的现象。我们在伊朗西部的伊拉姆省和胡齐斯坦省的4个新地点采集了nasrullahi Asaccus (Phyllodactylidae)标本。雌雄异型现象尚未见文献记载。在这项研究中,研究了110个这种蜥蜴的成年标本(用于度量和分生特征)。形态学分析表明,雄性在8个性状上明显大于雌性。两性之间的尾巴脱落率没有显著差异。本种的分布范围已从洛勒斯坦省的模式地区扩展到伊拉姆省和胡齐斯坦省的邻近地区。
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Sexual dimorphism in Asaccus nasrullahi Werner, 2006 (Sauria: Phyllodactylidae), from western Iran
The Leaf-Toad Geckos of genus Asaccus are distributed in some parts of the Middle-East characterizing by a the unique characteristic of cloacal sacs and postanal bones absence. The genus Asaccus includes 19 species with at least 10 species in Iran distributing along the Zagros Mountains. Sexual size dimorphism (SSD) is a body size difference between males and females of the same species, being a widespread phenomenon in reptiles. We collected additional specimens of Asaccus nasrullahi (Phyllodactylidae) from four new localities in Ilam and Khuzestan Provinces, western Iran. Sexual dimorphism in Asaccus nasrullahi has not yet been documented. In this study 110 adult specimens of this lizard were examined (for metric and meristic characters). The analyses of morphological data revealed that the males are significantly larger than the females in eight metric characters. There is no significant difference in the rate of tail shedding between the sexes. The range of this species is extended beyond type locality in Lorestan Province into adjacent areas in Ilam and Khuzestan Provinces.
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