Contrasting reproductive strategies of triploid hybrid males in vertebrate mating systems
نویسندگان
چکیده
منابع مشابه
Contrasting reproductive strategies of triploid hybrid males in vertebrate mating systems.
The scarcity of parthenogenetic vertebrates is often attributed to their 'inferior' mode of clonal reproduction, which restricts them to self-reproduce their own genotype lineage and leaves little evolutionary potential with regard to speciation and evolution of sexual reproduction. Here, we show that for some taxa, such uniformity does not hold. Using hybridogenetic water frogs (Pelophylax esc...
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The endemic Iberian minnow Squalius alburnoides is a complex of fishes of hybrid origin including both males and females with distinct ploidy levels and varying proportions of the parental genomes. In this paper we demonstrated that in contrast to many vertebrate hybrid lineages the sperm of triploid hybrid males of S. alburnoides is viable and fully functional. Flow cytometry and analysis of s...
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© 1998 Journals of Reproduction and Fertility 1359-6004/98 $12.50 Puberty, the transition from a sexually immature state to one of full reproductive activity, is timed by signals acting in the brain to increase activity of the hypothalamo–pituitary axis which stimulates the production of mature gametes. There are profound sex differences in the timing of puberty in many species. This occurs by ...
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Asymmetrical gene flow, which has frequently been documented in naturally occurring hybrid zones, can result from various genetic and demographic factors. Understanding these factors is important for determining the ecological conditions that permitted hybridization and the evolutionary potential inherent in hybrids. Here, we characterized morphological, nuclear, and chloroplast variation in a ...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2015
ISSN: 1010-061X
DOI: 10.1111/jeb.12556