Male–female relatedness and patterns of male reproductive investment in guppies
نویسندگان
چکیده
منابع مشابه
Male-female relatedness and patterns of male reproductive investment in guppies.
Inbreeding can cause reductions in fitness, driving the evolution of pre- and postcopulatory inbreeding avoidance mechanisms. There is now considerable evidence for such processes in females, but few studies have focused on males, particularly in the context of postcopulatory inbreeding avoidance. Here, we address this topic by exposing male guppies (Poecilia reticulata) to either full-sibling ...
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15 صفحه اولMacroevolutionary patterns of male reproductive investment in a clade of parasitic hermaphrodites.
The Eucestoda is particularly relevant for questions concerning reproductive investment in male gametes because no other parasitic group displays such diversity in testis size and number within and among species. This diversity has long been used as a valuable taxonomic character, but few researchers have ever investigated its evolutionary significance. In this paper we investigate the evolutio...
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In semelparous populations, dormant germ banks (e.g. seeds) have been proposed as important in maintaining genotypes that are adaptive at different times in fluctuating environments. Such hidden storage of genetic diversity need not be exclusive to dormant banks. Genotype diversity may be preserved in many iteroparous animals through sperm-storage mechanisms in females. This allows males to rep...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2014
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2014.0166