Larger swordtail females prefer asymmetrical males
نویسندگان
چکیده
منابع مشابه
Selection on females can create 'larger males'.
In many bird and mammal species, males are significantly larger than females. The prevailing explanation for larger-sized males is that sexual selection drives increased male size. In addition, researchers commonly assume that the extent of dimorphism indicates the strength of selection for increased size in males. Here, through reconstruction of ancestral morphology for males and females of on...
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Surprisingly little is known about the role of acoustic cues in mammal female mate choice. Here, we examine the response of female red deer (Cervus elaphus) to male roars in which an acoustic cue to body size, the formants, has been re-scaled to simulate different size callers. Our results show that oestrous red deer hinds prefer roars simulating larger callers and constitute the first evidence...
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Recent evidence suggests that female ornaments in birds not only are genetic correlates of selection on males but may also have evolved by selection acting directly on females. However, most evidence comes from studies in captivity and it is therefore still debated whether male choice is important under natural conditions. The rock sparrow, Petronia petronia, is a monomorphic passerine in which...
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In many species, males increase their reproductive success by choosing high-quality females. In natural populations, they interact with both virgin and mated females, which can store sperm in their spermatheca. Therefore, males elaborate strategies to avoid sperm competition. In the terrestrial isopod Armadillidium vulgare, females can store sperm and produce several clutches. Moreover, this sp...
متن کاملLow-quality females prefer low-quality males when choosing a mate.
Mate choice studies routinely assume female preferences for indicators of high quality in males but rarely consider developmental causes of within-population variation in mating preferences. By contrast, recent mate choice models assume that costs and benefits of searching or competing for high-quality males depend on females' phenotypic quality. A prediction following from these models is that...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2005
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2005.0387