Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Sarah R. Pryke"'
Publikováno v:
Emu - Austral Ornithology. 119:106-115
Many species show pronounced differences in life-history traits, from the individual level to divergences between distinct populations. Understanding the variation in these traits provides ...
Publikováno v:
Emu - Austral Ornithology. 119:97-105
Maternal hormones are thought to play an important role in determining the rate of evolutionary adaptation. Previous avian studies have shown that the transfer of maternally derived hormones, such ...
Publikováno v:
Animal Behaviour. 111:329-339
Discrete colour polymorphisms are often genetically correlated with other traits under natural and sexual selection, such as behaviour, life history and physiology. Elucidating such correlations is essential to understand the adoption of alternative
Publikováno v:
Journal of Avian Biology. 47:167-175
The role of melanin ‘badges of status’, in male–male competition has been well-studied, in contrast, carotenoid based plumage has largely been examined in the context of female mate choice. Recent work has shown that carotenoid signals can also
Publikováno v:
Ethology. 123:41-50
In avian systems, nest predation is one of the most significant influences on reproductive success. Selection for mechanisms and behaviours to minimise predation rates should be favoured. To avoid predation, breeding birds can often deter predators t
Publikováno v:
Biological Journal of the Linnean Society. 117:503-515
Animal coloration has evolved in contexts such as communication, camouflage, and thermoregulation. Most studies of animal coloration focus on its adaptive benefits, whereas its underlying mechanisms have received less attention despite their potentia
Publikováno v:
Evolutionary Ecology. 27:1189-1198
Understanding genetic colour polymorphism has proved a major challenge, both in terms of the underlying genetic mechanisms and the evolutionarily forces maintaining such genetic variation. In this context, genetic differences in aggression or competi
Publikováno v:
Behavioral Ecology. 24(5):1138-1149
Conspicuous color signals are commonly used by a wide diversity of animals to advertise some specific aspect of their competitive ability. In particular, orange and red colors are often used as an aggressive signal to potential rivals. The iconic Aus
Autor:
Sarah R. Pryke, Kristal E. Cain
Publikováno v:
Journal of evolutionary biology. 30(2)
Testosterone (T) is an important mediator of reproductive behaviours and potential target for selection. However, there are few data relating natural variation in T to fitness estimates. Here, we used the GnRH challenge (an injection of gonadotropin-
Publikováno v:
Behavioural processes. 138
Quantifying differences in aggressive behaviour across contexts can be useful in developing an understanding of life histories and breeding systems, as well as the relative costs and benefits of such behaviour. We investigated whether age, relative b