Filial cannibalism by mouthbrooding males of the cardinal fish,Apogon doederleini, in relation to their physical condition
Filial cannibalism by mouthbrooding males of the cardinal fish,Apogon doederleini, in relation to their physical condition
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口育雄性大鱼 Apogon doederleini 的孝顺同类相食与其身体状况的关系
DOI：
10.1007/bf00002532
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发表时间：
1996
影响因子：
1.4
通讯作者：
Y. Yanagisawa
中科院分区：
文献类型：
--
作者：
N. Okuda;Y. Yanagisawa
摘要在日本四国岛，观察到雄幼相食的现象。在361个由雄性口孵的卵群中，47个在产卵后一天内消失。用注射器检查胃，确定它们被雄性吃掉了。这种同类相食的频率随着繁殖季节的推进而增加。雄性在繁殖季节完成4-7个繁殖周期，80%的时间在不吃普通食物的情况下进行口育，在繁殖季节后期身体状况严重恶化。结果表明，亲代身体状况是幼代同类相食发生的重要因素。
SynopsisPaternal brood cannibalism was observed in a population ofApogon doederleini in Shikoku Island, Japan. Of 361 egg masses mouthbrooded by males, 47 disappeared within a day of spawning. A stomach check with a syringe ascertained that they had been consumed by the males. The frequency of this cannibalism increased as the breeding season advanced. As males completed 4–7 breeding cycles in a breeding season and spent 80% of the time mouthbrooding without taking ordinary food, their physical condition deteriorated greatly late in the breeding season. We concluded that parental physical condition is an important factor in the occurrence of brood cannibalism.