Differences in mating behavior between two allopatric populations of a Neotropical scorpion.
Differences in mating behavior between two allopatric populations of a Neotropical scorpion.
复制标题
新热带蝎子的两个异域种群之间交配行为的差异。
DOI：
10.1016/j.zool.2017.06.009
复制
发表时间：
2017
期刊：
影响因子：
2
通讯作者：
A. Peretti
中科院分区：
文献类型：
--
作者：
P. Olivero;C. Mattoni;A. Peretti
求偶和交配行为通常在不同的种群和物种中迅速进化。对不同环境的适应可能导致择偶特征的行为差异。本研究的目的是比较两个远缘群体的蝎Bothriurus bonariensis的性行为。该物种广泛分布于南美洲，栖息于阿根廷中部、乌拉圭和巴西东南部。据了解，在这个物种中有一个分歧的形态模式（身体大小，着色，异速生长和波动的不对称指数）之间的遥远的人口。考虑到各地之间的环境条件的差异，我们比较了阿根廷中部和乌拉圭南部人口的种群内和种群间交配的性行为。我们发现交配模式的显着差异，包括重要的刺激求偶行为的频率和持续时间的差异。此外，大多数种群间的交配是不成功的。在这个框架下，生殖行为的差异可能表明这些种群之间的生殖隔离，这与它们已知的形态差异相吻合。这是第一项比较异域蝎子种群性行为的研究;它提供了关于B. bonariensis。
Courtship and mating behavior generally evolve rapidly in diverging populations and species. The adaptation to different environments may cause behavioral divergence in characteristics involved in mate choice. Our objective in this study was to compare the sexual behavior of two distant populations of the scorpionBothriurus bonariensis. This species has a broad distribution in South America, inhabiting Central Argentina, Uruguay and south-eastern Brazil. It is known that in this species there is a divergence in morphological patterns (body size, coloration, allometry and fluctuating asymmetry indexes) among distant populations. Considering the differences in environmental conditions between localities, we compare the sexual behavior in intra-population and inter-population matings from Central Argentina and southern Uruguay populations. We found significant differences in mating patterns, including differences in the frequency and duration of important stimulatory courtship behaviors. In addition, most inter-population matings were unsuccessful. In this framework, the differences in reproductive behavior could indicate reproductive isolation between these populations, which coincides with their already known morphological differences. This is the first study comparing the sexual behavior of allopatric populations of scorpions; it provides new data about the degree of intraspecific geographical divergence in the sexual behavior ofB. bonariensis.