Centre for Research in Animal Behaviour, College of Life and Environmental Sciences, Psychology, Washington Singer Laboratories, Exeter, EX4 4QG, UK.
J Fish Biol. 2012 Mar;80(3):503-18. doi: 10.1111/j.1095-8649.2011.03181.x. Epub 2012 Jan 12.
Association preferences and aggression intensity were investigated in relation to kin and familiarity in the self-fertilizing, clonal vertebrate, the mangrove killifish Kryptolebias marmoratus. Results indicated that fish preferentially associated with and exhibited less intense aggression towards members of their own genotype (kin), compared to members of a different genotype (non-kin). Furthermore, when fish were presented with stimulus groups of the same genotype that were familiar or unfamiliar, fish preferentially associated with and exhibited lower aggression intensity directed towards familiar groups. These results indicate that this species prefer to associate with both kin and familiar individuals and modulate aggression accordingly. These results are discussed with reference to the adaptive benefits of kin recognition and preferences for familiars, and place results within the context of current knowledge of the ecology of K. marmoratus.
研究了在自我受精的、克隆的脊椎动物——红树咸水鱼（Kryptolebias marmoratus）中，亲缘关系和熟悉度与关联偏好和攻击强度的关系。结果表明，与不同基因型（非亲缘）的成员相比，鱼类更倾向于与自己基因型（亲缘）的成员关联，并表现出较低的攻击强度。此外，当鱼类面对熟悉或不熟悉的相同基因型的刺激群体时，它们更倾向于与熟悉的群体关联，并表现出较低的攻击强度。这些结果表明，这种鱼类更喜欢与亲缘关系和熟悉的个体关联，并相应地调节攻击行为。这些结果参考了亲缘识别和熟悉个体偏好的适应性益处，并将结果置于当前对 K. marmoratus 生态学的认识背景下进行讨论。
