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2020: 欧洲眼镜蛇蜥蜴Pseudopus apodus (有鳞目;蛇蜥科)两个种群的形态和生态差异. 动物学研究, 41(2): 172-181. DOI: 10.24272/j.issn.2095-8137.2020.025
引用本文: 2020: 欧洲眼镜蛇蜥蜴Pseudopus apodus (有鳞目;蛇蜥科)两个种群的形态和生态差异. 动物学研究, 41(2): 172-181. DOI: 10.24272/j.issn.2095-8137.2020.025
Olga Jovanović Glavaš, Paula Počanić, Vanja Lovrić, Lorena Derežanin, Zoran Tadić, Duje Lisičić. 2020: Morphological and ecological divergence in two populations of European glass lizard, Pseudopus apodus (Squamata: Anguidae). Zoological Research, 41(2): 172-181. DOI: 10.24272/j.issn.2095-8137.2020.025
Citation: Olga Jovanović Glavaš, Paula Počanić, Vanja Lovrić, Lorena Derežanin, Zoran Tadić, Duje Lisičić. 2020: Morphological and ecological divergence in two populations of European glass lizard, Pseudopus apodus (Squamata: Anguidae). Zoological Research, 41(2): 172-181. DOI: 10.24272/j.issn.2095-8137.2020.025

欧洲眼镜蛇蜥蜴Pseudopus apodus (有鳞目;蛇蜥科)两个种群的形态和生态差异

Morphological and ecological divergence in two populations of European glass lizard, Pseudopus apodus (Squamata: Anguidae)

  • 摘要: 欧洲眼镜蛇蜥(Pseudopus apodus)是一种无腿的大型蜥蜴,广泛分布于欧洲东南部、东亚和中亚(Pallas, 1775)。到目前为止,尚无对该蜥蜴在地理小范围内的种群形态分化的报道。因此,我们研究了生活在相对接近的地理区域内的同一生物地理带的P. apodus两个种群之间的形态变化和相应的栖息地利用的差异。我们假设生境的微小差异能够引起形态水平的显著分化,从而表明该物种在小地理尺度上具有形态可塑性。我们抽取了164个样(其中92份来自克罗地亚大陆,72份来自Cres岛)。结果表明,在相对较近的同一生物地理区域内,P. apodus的两个种群在形态上确实存在差异,Cres岛的个体普遍大于大陆个体。两个种群在某些生态特征上(如土壤温度、到藏身地的距离)相似,而在其他生态特征上(如空气温度和湿度)不同。此外,两个地点的植被覆盖有所不同,内地的植被多于岛上。并且,Cres岛上的种群表现出明显的性别二态性,而大陆种群则没有。

     

    Abstract: The European glass lizard, Pseudopus apodus (Pallas, 1775), is a large, legless lizard with wide distribution across south-eastern Europe and eastern and central Asia. To date, morphological diversification among populations on a geographically small scale has not yet been reported in this lizard. Thus, we investigated the morphological variations and corresponding differences in habitat utilization between two populations of P. apodus inhabiting the same biogeographical zone within a relatively close geographic area. We hypothesized that minor differences in habitat could induce a significant level of morphological differentiation, thus indicating morphological plasticity in this species on a small geographical scale. We sampled 164 individuals (92 from the Croatian mainland and 72 from the island of Cres). Results showed that P. apodus indeed exhibited morphological differences between populations in the same biogeographical zone within a relatively close geographic area, with the Cres Island individuals being generally larger than the individuals from the mainland. Some ecological characteristics were similar in both populations (e.g., soil temperature, distance to hiding place), whereas others were distinct (e.g., air temperature and humidity). In addition, vegetation cover differed between the two sites, with more vegetation present on the mainland than on the island. Furthermore, the Cres Island population showed clear sexual dimorphism, which was absent in the mainland population.

     

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