Professor Lesley Morrell's Outputs (5)

Mechanisms for aggregation in animals: Rule success depends on ecological variables (2007)
Journal Article
Morrell, L. J., & James, R. (2008). Mechanisms for aggregation in animals: Rule success depends on ecological variables. Behavioral ecology, 19(1), 193-201. https://doi.org/10.1093/beheco/arm122

Under the threat of predation, animals often group tightly together, with all group members benefiting from a reduction in predation risk through various mechanisms, including the dilution, encounter-dilution, and predator confusion effects. Addition... Read More about Mechanisms for aggregation in animals: Rule success depends on ecological variables.

Early interactions with adults mediate the development of predator defenses in guppies (2007)
Journal Article
Chapman, B. B., Morrell, L. J., Benton, T. G., & Krause, J. (2008). Early interactions with adults mediate the development of predator defenses in guppies. Behavioral ecology, 19(1), 87-93. https://doi.org/10.1093/beheco/arm111

Antipredator defenses in many species have been shown to exhibit phenotypic plasticity in response to variable predation risk. Some evidence suggests that in certain species adults act as proxy predators, triggering the development of adaptive defens... Read More about Early interactions with adults mediate the development of predator defenses in guppies.

Consensus decision making in human crowds (2007)
Journal Article
Dyer, J. R. G., Ioannou, C. C., Morrell, L. J., Croft, D. P., Couzin, I. D., Waters, D. A., & Krause, J. (2008). Consensus decision making in human crowds. Animal behaviour, 75(2), 461-470. https://doi.org/10.1016/j.anbehav.2007.05.010

In groups of animals only a small proportion of individuals may possess particular information, such as a migration route or the direction to a resource. Individuals may differ in preferred direction resulting in conflicts of interest and, therefore,... Read More about Consensus decision making in human crowds.

A cost of leadership in human groups (2007)
Journal Article
Piyapong, C., Morrell, L. J., Croft, D. P., Dyer, J. R. G., Ioannou, C. C., & Krause, J. (2007). A cost of leadership in human groups. Ethology, 113(9), 821-824. https://doi.org/10.1111/j.1439-0310.2007.01382.x

Group living is the result of a dynamic trade-off between associated costs and benefits. However, these costs and benefits are not necessarily distributed equally across different spatial positions of groups which may result in different fitness retu... Read More about A cost of leadership in human groups.

Diet, familiarity and shoaling decisions in guppies (2007)
Journal Article
Morrell, L. J., Hunt, K. L., Croft, D. P., & Krause, J. (2007). Diet, familiarity and shoaling decisions in guppies. Animal behaviour, 74(2), 311-319. https://doi.org/10.1016/j.anbehav.2006.10.021

Animals are known to derive benefits from associating with familiar individuals, and familiarity is important in the structuring of animal groups. In fish, individuals are known to shoal preferentially with others they have previously spent time with... Read More about Diet, familiarity and shoaling decisions in guppies.