Copulation with immature females increases male fitness in cannibalistic widow spiders
نویسندگان
چکیده
منابع مشابه
Male water striders attract predators to intimidate females into copulation
Despite recent advances in our understanding of sexual conflict and antagonistic coevolution between sexes, the role of interspecific interactions, such as predation, in these evolutionary processes remains unclear. In this paper, we present a new male mating strategy whereby a male water strider Gerris gracilicornis intimidates a female by directly attracting predators as long as she does not ...
متن کاملInteractions of Immature Male and Female Baboons with Adult Females
Immature males interacted at lower rates than immature females both with their mothers and with unrelated adult females . Immature males interacted with unrelated adult females primarily when the females were sexually cycling, whereas immature females interacted with adult females primarily during lactation. Immature males tended both to groom and to copulate with adult females who ranked lower...
متن کاملPerception of male-male competition influences Drosophila copulation behaviour even in species where females rarely remate.
Males in many taxa are known to exhibit behavioural plasticity in response to the perceived intensity of sperm competition, reflected in Drosophila melanogaster by increased copulation duration following prior exposure to a rival. We tested the prediction that males do not adjust their copulation effort in response to the presence of a competitor in Drosophila species where there is little or n...
متن کاملNovel male trait prolongs survival in suicidal mating.
Male redback spiders (Latrodectus hasselti) maximize paternity if they copulate twice with their cannibalistic mate. Facilitating cannibalistic attack during their first copulation yields paternity benefits. However, females have paired sperm-storage organs inseminated during two separate copulations, so males that succumb to partial cannibalism during the first copulation lose at least 50% of ...
متن کاملSexual and nonsexual cannibalism have different effects on offspring performance in redback spiders
Sexual cannibalism is often set apart from other forms of cannibalism; however, no studies have directly compared the fitness consequences of these 2 types of cannibalism. Here, we compared the consequences of cannibalism of a male by a female outside the context of mating (referred to as nonsexual cannibalism) and within the context of mating (referred to as sexual cannibalism) for the propens...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2016
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2016.0516