SOCIAL DYNAMICS IN SALMONID FISHES - DO KIN MAKE BETTER NEIGHBORS
SOCIAL DYNAMICS IN SALMONID FISHES - DO KIN MAKE BETTER NEIGHBORS
复制标题
DOI：
10.1006/anbe.1993.1107
复制
发表时间：
1993-05-01
期刊：
影响因子：
2.5
通讯作者：
BROWN, JA
中科院分区：
文献类型：
--
作者：
BROWN, GE;BROWN, JA
据报道，包括鱼类在内的许多动物分类单元都存在亲缘歧视。然而，这种能力的功能解释尚未得到研究。为了确定亲属歧视是否对大西洋鲑鱼、鲑鱼和虹鳟鱼的社会动态产生影响，我们在人工溪流池中对全兄弟姐妹和无关的幼鱼群体进行了研究。先前已证明这两个物种会歧视亲属。记录攻击性互动的形式和频率，以及与最近邻居的平均距离。研究发现，与亲缘群体相比，两个物种的非亲缘群体中攻击性互动的平均频率显着更高，并且亲缘群体中与最近邻居的平均距离显着较低。此外，与两个物种中的非亲缘群体相比，亲缘群体使用“公开攻击性”领地防御模式行动模式的比例显着较低，而“被动”领地防御模式行动模式的比例显着较高。这些结果表明，包容性健康益处可能与维持近亲相对于非近亲同种的领地有关。
Kin discrimination has been reported in a number of animal taxa, including fish; however, functional explanations for this ability have not been examined. To determine whether kin discrimination has an effect on the social dynamics in Atlantic salmon,Salmo salar, and rainbow trout,Oncorhynchus mykiss, groups of full-siblings and unrelated juveniles were studied in an artificial stream tank. Both species have been previously shown to discriminate kin. The form and frequency of aggressive interactions, and the mean distance to nearest neighbours was recorded. Mean frequency of aggressive interactions was found to be significantly higher in non-kin groups of both species compared with kin groups, and the mean distance to nearest neighbour was significantly lower in kin groups. In addition, kin groups used a significantly lower proportion of 'overtly aggressive' territorial defence modal action patterns and a significantly higher proportion of 'passive' territorial defence modal action patterns compared with non-kin in both species. These results suggest that inclusive fitness benefits may be associated with maintaining territories near kin versus non-kin conspecifics.