Female aggression and male peace-keeping in a cichlid fish harem: conflict between and within the sexes in Lamprologus ocellatus
Female aggression and male peace-keeping in a cichlid fish harem: conflict between and within the sexes in Lamprologus ocellatus
复制标题
丽鱼后宫中雌性的攻击性与雄性的和平维持：Lamprologus ocellatus 的两性之间和两性内部的冲突
DOI：
10.1007/bf00164181
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发表时间：
1994
影响因子：
2.3
通讯作者：
F. Trillmich
中科院分区：
文献类型：
--
作者：
B. Walter;F. Trillmich
两性内部和两性之间的利益冲突是导致交配系统变异的重要过程。调解冲突的行为互动很少被记录在案。在实验室条件下，对眼斑亮丽鲷（Lamprologus ocellatus）螺壳寄生的成对螺壳和雌雄螺壳进行了研究。由于体型较大，雄性控制了限制繁殖的资源：蜗牛壳。雄性可以在准备产卵的雌性中进行选择。只有当雌性在定居后的几天内产下一窝时，它们才被接受。当几个雌性试图同时定居时，较大的雌性首先定居。雌性在守卫卵时最不具攻击性。次级雌性更有可能解决时，主要的女性是守卫鸡蛋。在既定的后宫中，女性继续相互攻击。男性干预了大约80%的女性攻击性互动。男性的干预活动与其后宫女性的攻击频率相关。雄性通常会攻击攻击者，把她赶回自己的蜗牛壳里。当一个男性被从他的后宫中移除时，女性之间的攻击立即增加，通常第二女性在几天内被第一女性驱逐。初级雌鱼幼鱼的移动的越多，其后宫解体的时间越短，且与后宫雌鱼之间的大小差异无关。雄性L.眼轮匝肌积极干预女性冲突，维护女性利益。女性的冲突大概涉及到的成本，分享男性父母的投资和潜在的捕食另一个女性的大少年对女性自己的小少年。
Conflicts of interest within and between the sexes are important processes leading to variability in mating systems. The behavioral interactions mediating conflict are little documented. We studied pairs and harems of the snail-shell inhabiting cichlid fishLamprologus ocellatusin the laboratory. Due to their larger size, males controlled the resource that limited breeding: snail shells. Males were able to choose among females ready to spawn. Females were only accepted if they produced a clutch within a few days of settling. When several females attempted to settle simultaneously the larger female settled first. Females were least aggressive when guarding eggs. Secondary females were more likely to settle when the primary female was guarding eggs. In established harems females continued to be aggressive against each other. The male intervened in about 80% of female aggressive interactions. Male intervention activity correlated with the frequency of aggression among the females in his harem. The male usually attacked the aggressor and chased her back to her own snail shell. When a male was removed from his harem, aggression between females increased immediately and usually the secondary female was expelled by the primary female within a few days. Time to harem break-up was shorter the more mobile the primary females' young were and did not correlate with the size difference between harem females. MaleL. ocellatusinterfere actively in female conflict and keep the harem together against female interests. Female conflict presumably relates to the cost of sharing male parental investment and to the potential of predation by another female's large juveniles on a female's own small juveniles.