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首页> 外文期刊>Ecological research >Differences in diapause attributes between two clinal forms distinguished by male-to-male aggression in a subsocial spider mite, Schizotetranychus miscanthi Saito
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Differences in diapause attributes between two clinal forms distinguished by male-to-male aggression in a subsocial spider mite, Schizotetranychus miscanthi Saito

机译：在亚社会红蜘蛛Schizotetranychus miscanthi Saito中以雄性对雄性侵略为特征的两种斜纹形式的滞育特性差异

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摘要

The nest-weaving spider mite Schizotetranychus miscanthi Saito showed a cline in male-to-male aggression intensity with minimum winter temperature. The altered kin structure in spring nests, which might be caused by winter harshness, was hypothesized to be a key factor responsible for the cline in male-to-male aggression. In Japan, we found two forms (high- and low-aggression forms) that showed different clinal trends with similar regression slopes and different intercepts. The former is characteristic of local populations from milder climates, whereas the latter occurs in harsher climates. We hypothesized that the intensity of female diapause, which may determine whether males are produced during late winter, was one of the factors separating these two clinal forms. In the four populations studied, short day length during the developmental period (egg to adult emergence) induced diapause in females. Diapause intensity varied greatly among populations, and particularly between the high-aggression and low-aggression forms. These data, together with data on winter harshness between the localities, led us to believe that female diapause is one of the factors affecting relatedness between interacting males in nests and can explain why the two forms of S. miscanthi have different clinal trends in male aggression in Japan.
机译：巢织的蜘蛛螨Schizotetranychus miscanthi Saito在冬季温度最低的情况下，雄对雄的侵略强度呈上升趋势。据推测，春季巢穴中亲属结构的变化可能是由于冬季严酷造成的，是导致男性对男性侵略的关键因素。在日本，我们发现了两种形式（高侵略性和低侵略性），它们表现出不同的趋势，具有相似的回归斜率和不同的截距。前者是温和气候下当地居民的特征，而后者则出现在恶劣气候下。我们假设雌性滞育的强度可能决定了男性是否在冬季后期生产，这是分隔这两种临床形式的因素之一。在所研究的四个人群中，在发育时期（例如成年成年）的短日长导致女性滞育。滞育强度在各种群之间差异很大，尤其是在高侵略性和低侵略性之间。这些数据，再加上各地之间冬季严酷的数据，使我们相信，女性滞育是影响巢中相互作用的雄性之间相关性的因素之一，并且可以解释为什么两种形式的S. miscanthi在雄性侵略中具有不同的最终趋势。在日本。

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