Seasonal variation in male alternative reproductive tactics
نویسندگان
چکیده
منابع مشابه
Genetic variation in threshold reaction norms for alternative reproductive tactics in male Atlantic salmon, Salmo salar.
Alternative reproductive tactics may be a product of adaptive phenotypic plasticity, such that discontinuous variation in life history depends on both the genotype and the environment. Phenotypes that fall below a genetically determined threshold adopt one tactic, while those exceeding the threshold adopt the alternative tactic. We report evidence of genetic variability in maturation thresholds...
متن کاملAlternative reproductive tactics in fish
Among vertebrates, fish show by far the greatest variability of alternative reproductive tactics (ARTs). Usually, males attempting to monopolize access to females or fertilizations are parasitized by conspecific male competitors (Taborsky 1997). This is so common in fish (Mank and Avise 2006) that it appears to be the rule rather than the exception: in fish with external fertilization, 170 spec...
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The molecular mechanisms underlying phenotypic plasticity are not well understood. Identifying mechanisms underlying alternative reproductive tactics (ARTs) in species for which the behavioural and fitness consequences of this variation are well characterized provides an opportunity to integrate evolutionary and mechanistic understanding of the maintenance of variation within populations. In th...
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متن کاملAlternative reproductive tactics and life history phenotypes
Alternative reproductive tactics (ARTs) coexisting within a population are found in many organisms. Their existence has been an enduring puzzle in evolutionary biology. Why should selection produce distinctly different alternatives to reach the same goal? How can such alternative solutions coexist in a population? What determines their evolutionary stability? Here we outline ultimate and proxim...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2016
ISSN: 1010-061X,1420-9101
DOI: 10.1111/jeb.12981