Visual adaptation and microhabitat choice in Lake Victoria cichlid fish
نویسندگان
چکیده
منابع مشابه
Developmental effects of visual environment on species-assortative mating preferences in Lake Victoria cichlid fish.
Local adaptation can be a potent force in speciation, with environmental heterogeneity leading to niche specialization and population divergence. However, local adaption often requires nonrandom mating to generate reproductive isolation. Population divergence in sensory properties can be particularly consequential in speciation, affecting both ecological adaptation and sexual communication. Pun...
متن کاملKnow thine enemy: intrasexual selection and sympatric speciation in Lake Victoria cichlid fish
It has been suggested that sympatric speciation can be driven by sexual selection on male mating traits alone. However, a fundamental problem for this process is the lack of ecological differentiation that would stabilize co-existence of incipient species through frequency-dependent selection. Such selection can also occur if male aggression is primarily directed towards similar rather than tow...
متن کاملDevelopmental effects of environmental light on male nuptial coloration in Lake Victoria cichlid fish
Background Efficient communication requires that signals are well transmitted and perceived in a given environment. Natural selection therefore drives the evolution of different signals in different environments. In addition, environmental heterogeneity at small spatial or temporal scales may favour phenotypic plasticity in signaling traits, as plasticity may allow rapid adjustment of signal ex...
متن کاملEarly learning influences species assortative mating preferences in Lake Victoria cichlid fish.
The Lake Victoria 'species flock' of cichlids is puzzling because reproductive isolation often occurs in the absence of substantial ecological differences among species. Theory predicts that this cannot evolve with most genetic mechanisms for mate choice. We provide the first evidence that learning, in the form of sexual imprinting, helps maintain reproductive isolation among closely related ci...
متن کاملPopulation-structure and genetic diversity in a haplochromine fish cichlid of a satellite lake of Lake Victoria
The ∼ 500 species of the cichlid fish species flock of Lake Victoria, East Africa, have evolved in a record-setting 100 000 years and represent one of the largest adaptive radiations. We examined the population structure of the endangered cichlid species Xystichromis phytophagus from Lake Kanyaboli, a satellite lake to Lake Victoria in the Kenyan Yala wetlands. Two sets of molecular markers wer...
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ژورنال
عنوان ژورنال: Royal Society Open Science
سال: 2019
ISSN: 2054-5703
DOI: 10.1098/rsos.181876