Resource control by territorial male cichlid fish in Lake Malawi
نویسندگان
چکیده
منابع مشابه
A 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 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...
متن کاملMultiple interacting loci control sex determination in lake Malawi cichlid fish.
Several models have been proposed to suggest how the evolution of sex-determining mechanisms might contribute to speciation. Here, we describe the inheritance of sex in 19 fish species from the rapidly evolving flock of cichlids in Lake Malawi, Africa. We found that many of these species have a male heterogametic (XY) system on linkage group 7. Some species also segregate for a female heterogam...
متن کاملEvolution of a cichlid fish in a Lake Malawi satellite lake.
Allopatric divergence in peripheral habitats may lead to rapid evolution of populations with novel phenotypes. In this study we provide the first evidence that isolation in peripheral habitats may have played a critical role in generation of Lake Malawi's cichlid fish diversity. We show that Lake Chilingali, a satellite lake 11.5 km from the shore of Lake Malawi, contains a breeding population ...
متن کاملOne Fish, Two Fish, Red Fish, Blue Fish: Geography, Ecology, Sympatry, and Male Coloration in the Lake Malawi Cichlid Genus Labeotropheus (Perciformes: Cichlidae)
While sexual selection on male coloration has been important in haplochromine cichlid speciation, few studies to date have examined potential environmental influences on color pattern evolution. Data from multiple sources on male nuptial coloration of the Lake Malawi endemic genus Labeotropheus were used to examine the relationship between color patterns and the environments in which these patt...
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ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 1999
ISSN: 0021-8790,1365-2656
DOI: 10.1046/j.1365-2656.1999.00301.x