体色和社会熟悉度对慈鲷选择集群的影响

BODY COLOR AND SOCIAL FAMILIARITY ON SHOAL SELECTION OF CICHLIDS

  • 摘要: 为了探究体色和社会熟悉度对慈鲷(Cichlidae)选择集群的影响, 以体色呈蓝色的蓝阿里(Sciaenochromis fryeri)为研究对象, 体色呈白色的雪鲷(Hindongo socolofi)和体色呈黄色的淡黑镊丽鱼(Labidochromis caeruleus)作为刺激鱼群, 通过控制鱼群社会熟悉, 测试实验鱼是否与优先偏好的颜色表型发生联系, 并观察实验鱼是否更喜欢与偏好的颜色表型但并不熟悉的刺激鱼群联系。结果显示, 当刺激鱼群的社会熟悉度没有差异时, 个体和群体都更倾向于与偏好的颜色表型鱼群联系; 而当刺激鱼群社会熟悉度不同时, 个体蓝阿里表现出与社会熟悉度更高的群体联系在一起, 但群体实验鱼表现出与偏好的颜色表型联系。研究表明, 体色对蓝阿里选择集群的影响要比社会熟悉度更大, 并且体色可能是慈鲷重要的集群线索, 这为研究鱼群内体色的生态影响(如捕食者-猎物之间的相互作用)奠定了基础。

     

    Abstract: In order to study the effects of body color and social familiarity on the shoal selection in cichlids, Sciaenochromis fryeri with a blue body color, was selected as the study object. White Hindongo socolofi and yellow Labidochromis caeruleus were chosen as stimuli to test whether experimental fish displayed a preference for specific color phenotypes, considering the controlled social familiarity of the shoal. Additionally, the study aimed to determine if experimental fish exhibited a preference for associating with shoal stimuli possessing a preferred color phenotype but were unfamiliar to the shoal. The results showed that when there was no difference in the social familiarity of shoal stimuli, both individuals and groups demonstrated a preference for associating with shoals of the preferred color phenotype. However, when stimulating fish with different social familiarity, individual S. fryeri showed an association with the more socially familiar shoal, while group experimental fish displayed a preference for the shoal with the preferred color shoal phenotype. The study show that body color exerts a greater influence on shoal selection than social familiarity. Body color emerges as a potentially significant shoal cue for cichlids, providing a foundation for exploring the ecological effects of body color (such as predator-prey interactions) within fish shoals.

     

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