Mate choice, egg cannibalism and reproductive success in the river bullhead, Cottus gobio L.
Mate choice, egg cannibalism and reproductive success in the river bullhead, Cottus gobio L.
复制标题
河牛头鱼 Cottus gobio L. 的配偶选择、同类相食和繁殖成功。
DOI：
10.1111/j.1095-8649.1988.tb05539.x
复制
发表时间：
1988
影响因子：
2
通讯作者：
A. Bisazza
中科院分区：
文献类型：
--
作者：
A. Marconato;A. Bisazza
研究了牛头鱼繁殖成功率的季节变化和个体差异。雌性繁殖力和雄性繁殖成功率与体型大小相关。发现大型雄性在大多数大型雌性产卵的季节早期繁殖。在雄鸟巢中发现的卵的直径表明，雌鸟倾向于与比自己大的雄鸟交配。对胃内容物的分析表明，守卫的雄性吃掉了一些自己的蛋。在父母看护期间，随着看护雄性身体状况的恶化，子代同类相食的发生率增加。
The seasonal pattern and individual variation in reproductive success was studied in a population of the river bullhead, Cottus gobio L. Female fecundity and male reproductive success were correlated with body size. Large males were found to breed early in the season when most of the large females spawned. The diameter of eggs found in male nests indicates that females tend to mate with males larger than themselves. The analysis of stomach contents suggests that guarding males cannibalize some of their own eggs. During parental care, the rate of filial cannibalism increases as guarding male body condition deteriorates.