Interspecific brood-mixing in Tanganyikan cichlids
Interspecific brood-mixing in Tanganyikan cichlids
复制标题
坦噶尼喀慈鲷的种间混育
DOI：
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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：
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作者：
H. Ochi;Y. Yanagisawa
摘要我们收集了六种常见慈鲷的幼鱼，由父母监护，调查种间育雏混合的频率和起源。其主要寄主为食鱼的细长丽鲷（Lepidiolamprologus elongatus）和食鳞的细鳞丽鲷（Perissodus microlepis），半数以上的学校有异种幼鱼，占幼鱼总数的20-40%。大部分的外国年轻人属于四个双亲口孵，其父母有一个习惯，携带他们的年轻在他们的嘴。这些年轻人中的许多人比他们自己的父母孵化的最大的年轻人要小。我们的结论是，在孩子独立之前收养孩子是因为父母主动将孩子转移给养父母的行为。
SynopsisWe collected schools of young, guarded by parents, of six common cichlid species to investigate the frequency and origin of interspecific brood-mixing. The main host species were a piscivore Lepidiolamprologus elongatus and a scale-eater Perissodus microlepis; more than half of their schools included heterospecific young, accounting for 20–40% of the total young. Most of the foreign young belonged to four biparental mouth-brooders whose parents have a habit of carrying their young in their mouths. Many of these young were smaller than the largest young brooded by their own parents. We concluded that adoption of young before independence results from farming-out, a behavior by which parents actively transfer their young to foster parents.