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Association patterns and foraging behaviour in natural and artificial guppy shoals (2008)
Journal Article
Morrell, L. J., Croft, D. P., Dyer, J. R. G., Chapman, B. B., Kelley, J. L., Laland, K. N., & Krause, J. (2008). Association patterns and foraging behaviour in natural and artificial guppy shoals. Animal behaviour, 76(3), 855-864. https://doi.org/10.1016/j.anbehav.2008.02.015

Animal groups are often nonrandom assemblages of individuals that tend to be assorted by factors such as sex, body size, relatedness and familiarity. Laboratory studies using fish have shown that familiarity among shoal members confers a number of be... Read More about Association patterns and foraging behaviour in natural and artificial guppy shoals.

Optimal individual positions within animal groups (2008)
Journal Article
Morrell, L., & Romey, W. L. (2008). Optimal individual positions within animal groups. Behavioral ecology, 19(4), 909-919. https://doi.org/10.1093/beheco/arn050

Animal groups are highly variable in their spatial structure, and individual fitness is strongly associated with the spatial position of an animal within a group. Predation risk and food gains are often higher at the group peripheries; thus, animals... Read More about Optimal individual positions within animal groups.