Female spawning patterns and male mating success in the sand goby Pomatoschistus minutus
Female spawning patterns and male mating success in the sand goby Pomatoschistus minutus
复制标题
沙虾虎鱼的雌性产卵模式和雄性交配成功率
DOI：
10.1007/bf00349174
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发表时间：
1992
期刊：
影响因子：
2.4
通讯作者：
K. Lindström
中科院分区：
文献类型：
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作者：
K. Lindström
6月，在芬兰(北纬60°，东经23°)Träminne动物站附近进行的一项研究中，我调查了沙蜥(Pomatoschistus Minutus)的雄性交配成功是否可以用雌性对雄性大小的选择来解释。雄鸟的交配成功率受巢大小的制约，且随巢大小的增加而显著增加。我还发现产卵雌鸟的长度与巢的丰满程度呈负相关。随着大型雌鸟产下更多的蛋，它们也需要找到一个有更多空间来放置蛋的巢。不同巢大小的无卵雄鸟的大小相同，而有卵雄鸟的大小随着巢大小的增加而显著增加。这被解释为雌性对雄性在经常有争议的巢中的配偶的歧视。当不包括巢中没有卵子的雄性时，雄性的体型与其交配成功之间没有相关性。然而，一项雄性移出实验表明，在特定的巢中，当雄性大小增加时，交配成功也会增加，而如果雄性大小减少，交配成功也会减少。结论是，在沙地虎鱼中，雌性更喜欢与体型较大的雄性交配，特别是当雄性拥有一个高质量的巢时，它很可能不得不防御其他雄性。
In June 1989 in a study conducted near Träminne Zoological Station, Finland (60° N 23° E) I investigated whether or not male mating success could be explained by female choice for male size in sand gobies (Pomatoschistus minutus). Male mating success was constrained by nest size and increased markedly with increasing nest size. I also found a negative correlation between the length of spawning females and the fullness of the nest. As large females lay more eggs, they also need to find a nest with more space available for the eggs. The size of males without eggs was the same across nest size, whereas the size of males with eggs significantly increased with increasing nest size. This is interpreted as female discrimination against males as mates in nests that are often contested. There was no correlation between a male's size and his mating success when males with no eggs in their nests were excluded. A male removal experiment, however, showed that, in a specific nest, when male size increases so does mating success, whereas, if male size decreases, mating success also decreases. It is concluded that in the sand goby females prefer to mate with larger males, especially when the male possesses a high-quality nest that he most probably will have to defend against other males.