Individual mating success, lek stability, and the neglected limitations of statistical power
Article Abstract:
Leks feature prominently in studies of sexual selection, as they typically show extreme differences between males in mating successes. A degree of skew may decrease with lek size but there is non consensus on how to measure skewness. Data from mating success for 18 species shows that different species have similar skew versus lek size relationships, although the statistical power is insufficient to make a complete distinction with different alternatives relating to individual optima of males.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
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Environmental conditions and male morphology determine alternative mating behavior in Trinidadian guppies
Article Abstract:
The mating behavior of Poecilia reticulata (guppies) is examined in relation to male morphology. By manipulating light level, results show that different individuals resolve the trade-off between natural selection and sexual selection in different ways. Large males court less often, and those with long gonopodia are more likely to use thrusts. Therefore, the expression of alternative types of mating behavior depends on both male morphology and the environment.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1993
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Benefits and costs to mussels from ejecting bitterling embryos: A test of the evolutionary equilibrium hypothesis
Article Abstract:
Potential benefits and costs of host defense in an unusual interaction between a freshwater fish, the European bitterling and live unionid mussels used as hosts for fish's eggs were tested. A significant reduction in the ventilation rate of mussels incubating bitterling embryos and no evidence in support of the evolutionary equilibrium hypothesis was found.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2005
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