论文信息 - A re‐evaluation of the effect of shoalmate familiarity on the proliferation of alarm substance cells in ostariophysan fishes

A re‐evaluation of the effect of shoalmate familiarity on the proliferation of alarm substance cells in ostariophysan fishes

A re-examination of data from Wisenden & Smith Journal of Fish Biology50, 799–808) suggests that fathead minnows Pimephales promelas adjust investment into epidermal alarm substance cells (ASC) facultatively based upon the level of perceived risk. When placed into a container with non-familiar shoalmates (relatively high risk) ASC production increased. This allows these individuals to attract a secondary predator better. When placed into a container with familiar shoalmates (relatively low risk) ASC production decreased. This may reflect increased effectiveness of a group antipredator response by familiar individuals, and/or the cost to inclusive fitness of attracting additional predators to the vicinity of their kin.

R. J. Smith | B. Wisenden

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