Bower Size and Male Reproductive Success in a Cichlid Fish Lek
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منابع مشابه
Altering an extended phenotype reduces intraspecific male aggression and can maintain diversity in cichlid fish
Reduced male aggression towards different phenotypes generating negative frequency-dependent intrasexual selection has been suggested as a mechanism to facilitate the invasion and maintenance of novel phenotypes in a population. To date, the best empirical evidence for the phenomenon has been provided by laboratory studies on cichlid fish with different colour polymorphisms. Here we experimenta...
متن کاملA role for male bower size as an intrasexual signal in a Lake Malawi cichlid fish
Disruptive sexual selection through female mate choice has been proposed as a key mechanism driving the evolution of haplochromine cichlid fish diversity. Here we investigated if male secondary sexual traits employed by females in direct mate choice have an additional function in male competition. We conducted a field experiment on aggression among males of a lekking Lake Malawi cichlid species...
متن کاملSequential female assessment drives complex sexual selection on bower shape in a cichlid fish.
In many animals, sexual selection on male traits results from female mate choice decisions made during a sequence of courtship behaviors. We use a bower-building cichlid fish, Nyassachromis cf. microcephalus, to show how applying standard selection analysis to data on sequential female assessment provides new insights into sexual selection by mate choice. We first show that the cumulative selec...
متن کاملQuantifying mating success of territorial males and sneakers in a bower-building cichlid fish
The strategies and traits males evolve to mate with females are incredible in their diversity. Theory on the evolution of secondary sexual characters suggests that evolving any costly trait or strategy will pay off and stabilise in the population if it is advantageous compared to the alternative less costly strategy, but quantifying the relative success of the two can be difficult. In Lake Mala...
متن کاملSegregation of Species-Specific Male Attractiveness in F2 Hybrid Lake Malawi Cichlid Fish
Among the huge radiations of haplochromine cichlid fish in Lakes Malawi and Victoria, closely related species are often reproductively isolated via female mate choice although viable fertile hybrids can be produced when females are confined only with heterospecific males. We generated F(2) hybrid males from a cross between a pair of closely related sympatric cichlid fish from Lake Malawi. Labor...
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تاریخ انتشار 2017