All Outputs (5)

Does defection during predator inspection affect social structure in wild shoals of guppies? (2008)
Journal Article
Thomas, P. O. R., Croft, D. P., Morrell, L., Davis, A., Faria, J. J., Dyer, J. R. G., Piyapong, C., Ramnarine, I., Ruxton, G. D., & Krause, J. (2008). Does defection during predator inspection affect social structure in wild shoals of guppies?. Animal behaviour, 75(1), 43-53. https://doi.org/10.1016/j.anbehav.2007.06.004

Reciprocal altruism has been proposed as a possible mechanism for the evolution of cooperative behaviour. However, very few investigations have tested predictions of reciprocity in wild animal populations. In the current investigation we simulated de... Read More about Does defection during predator inspection affect social structure in wild shoals of guppies?.

Risk-sensitive antipredator behavior in the Trinidadian guppy, Poecilia reticulata (2008)
Journal Article
Botham, M. S., Hayward, R. K., Morrell, L. J., Croft, D. P., Ward, J. R., Ramnarine, I., & Krause, J. (2008). Risk-sensitive antipredator behavior in the Trinidadian guppy, Poecilia reticulata. Ecology, 89(11), 3174-3185. https://doi.org/10.1890/07-0490.1

The comparative approach has become a powerful tool for understanding how predation has shaped prey behavior. In this study we recorded the occurrence of common aquatic predator species and their densities in seven natural populations of Trinidadian... Read More about Risk-sensitive antipredator behavior in the Trinidadian guppy, Poecilia reticulata.

Shoal composition determines foraging success in the guppy (2008)
Journal Article
Dyer, J. R. G., Croft, D. P., Morrell, L. J., & Krause, J. (2009). Shoal composition determines foraging success in the guppy. Behavioral ecology, 20(1), 165-171. https://doi.org/10.1093/beheco/arn129

The composition of an animal group can impact greatly on the survival and success of its individual members. Much recent work has concentrated on behavioral variation within animal populations along the bold/shy continuum. Here, we screened individua... Read More about Shoal composition determines foraging success in the guppy.

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.