Fear of predation shapes social network structure and the acquisition of foraging information in guppy shoals.

ABSTRACT: Spatio-temporal variation in predation risk is predicted to select for plastic anti-predator responses, which may in turn impact the fine-scale social structure of prey groups and processes mediated by that structure. To test these predictions, we manipulated the ambient predation risk experienced by Trinidadian guppy (Poecilia reticulata) groups before quantifying their social networks and recording individual latencies to approach and solve a novel foraging task. High-risk conditions drove the formation of social networks that were more strongly assorted by body size than those exposed to low ambient risk and promoted longer durations of contact between preferred partners. Additionally, high background predation risk reduced the probability individuals would approach and solve a n

SUBMITTER: Hasenjager MJ 

PROVIDER: S-EPMC5719178 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature