Marginal predation: do encounter or confusion effects explain the targeting of prey group edges?

Callum Duffield and Christos C Ioannou

Behavioral Ecology, 2017, vol. 28, issue 5, 1283-1292

Abstract: Lay SummaryLiving in groups has been shown to have antipredator benefits for prey animals but risk still differs for individuals within a group. Using fish as predators presented with simulations of virtual prey, we show that prey on the edge of groups are more likely to be attacked than others, even at relatively small group sizes. We also show that encountering prey on the edge is likely to explain this effect rather than predatory confusion.

Keywords: aggregation; animal groups; edge effect; marginal predation; stickleback; virtual prey (search for similar items in EconPapers)
Date: 2017
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