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Avoiding Attack: The Evolutionary Ecology of Crypsis, Warning Signals and Mimicry
A comparison of Batesian and Mullerian Mimicry with mathematical and computer models that deal with Mullerian mimcry found that Batesian mimicry is superior to Mullerian mimicry in terms of both accuracy and efficiency.
Ecology of butterflies in natural and selectively logged forests of northern Borneo: the importance of habitat heterogeneity
1. The impacts of habitat disturbance on biodiversity within tropical forests are an area of current concern but are poorly understood and difficult to predict. This is due in part to a poor…
Evidence of intra-specific competition for food in a pelagic seabird
It is shown that the per capita population growth rates of northern gannet Morus bassanus at colonies in Britain and Ireland have declined with increasing population size, and a model is developed which demonstrates that disturbance of fish alone can readily generate conditions under which gannets at larger colonies have to travel further to obtain food.
A comparative analysis of the evolution of imperfect mimicry
It is shown that the most plausible explanation is that predators impose less selection for mimetic fidelity on smaller hoverfly species because they are less profitable prey items, which supports the relaxed-selection hypothesis and rejects several key hypotheses for imperfect mimicry.
Development of cooperative relationships through increasing investment
It is shown that cooperation can thrive despite variable investment through the new strategy of ‘raise-the-stakes’, which offers a small amount on first meeting and then, if matched, raises its investment, something that no strategy in the discrete model can do.
- G. Ruxton, William L. Allen, T. Sherratt, M. Speed
- Environmental ScienceOxford Scholarship Online
- 20 September 2018
Avoiding Attack discusses the diversity of mechanisms by which prey avoid predator attacks and explores how such defensive mechanisms have evolved through natural selection. It considers how…
Sex-specific foraging behaviour in a monomorphic seabird
- S. Lewis, S. Benvenuti, K. Hamer
- Environmental Science, BiologyProceedings of the Royal Society of London…
- 22 August 2002
The need to investigate sexual differences in the foraging behaviour of seabirds and other species more closely is highlighted, in order to test alternative theories that do not rely on differences in body size.
Empirical tests of the role of disruptive coloration in reducing detectability
- Stewart Fraser, Alison Callahan, Dana Klassen, T. Sherratt
- PsychologyProceedings of the Royal Society B: Biological…
- 22 May 2007
Control trials in which human subjects searched for computer-generated moth images presented against images of oak trees provide independent support for the survival value of disruptive markings and demonstrate that there are common features in human and avian perception of camouflage.
Fecal residues of veterinary parasiticides: nontarget effects in the pasture environment.
The nature and extent of the effects of veterinary parasiticides in dung of treated livestock, and how greater awareness of these nontarget effects has resulted in regulatory changes in the registration of veterinary products are described are described.
Dispersal characteristics of seven odonate species in an agricultural landscape
This is the first large‐scale, multi‐species study to assess dispersal behaviour of odonates by direct observation and finds surprisingly high rates of dispersal between ponds, which suggests that dispersal should be relatively easy to incorporate in more complex models of Odonate spatio‐temporal dynamics.