Carotenoid-based coloration in cichlid fishes
نویسندگان
چکیده
منابع مشابه
Divergent selection during speciation of Lake Malawi cichlid fishes inferred from parallel radiations in nuptial coloration.
Repeated evolution of the same phenotypic difference during independent episodes of speciation is strong evidence for selection during speciation. More than 1,000 species of cichlids, >10% of the world's freshwater fish species, have arisen within the past million years in Lakes Malawi and Victoria in eastern Africa. Many pairs of closely related sympatric species differ in their nuptial colora...
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Environmental factors including stressors, health status and social context significantly affect carotenoid-based coloration. For instance, stressors may induce the diversion of carotenoids from pigmentation pathways, potentially explaining why stressed animals often exhibit reduced coloration. However, we recently showed that high blood corticosterone concentrations, which are part of the phys...
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Originally it was proposed that dietary access alone might explain variation in expression of carotenoid pigmentation (Endler 1980; Kodric-Brown 1985; Hill 1990). By this idea, carotenoids are scarce in the environment, and only those individuals in the best condition gain access to sufficient carotenoids for maximum ornament display. To this idea of limited access was added the idea that paras...
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ژورنال
عنوان ژورنال: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology
سال: 2014
ISSN: 1095-6433
DOI: 10.1016/j.cbpa.2014.03.006