Sexual size dimorphism mediates the occurrence of state-dependent sexual cannibalism in a wolf spider

  title={Sexual size dimorphism mediates the occurrence of state-dependent sexual cannibalism in a wolf spider},
  author={Shawn M Wilder and Ann Lundie Rypstra},
  journal={Animal Behaviour},

Male sexual cannibalism in a sand-dwelling wolf spider with sex role reversal

This is the first report of male sexual cannibalism in a sex role reversed system and the astonishing male cannibalistic behaviour best agrees with extreme mate choice hypotheses because attacks were more frequent on mated females of low body condition.

Mate quality, not aggressive spillover, explains sexual cannibalism in a size-dimorphic spider

In support of the mate choice hypothesis, less aggressive males were more likely attacked and cannibalized than more aggressive ones, which hints at sexual selection for aggressiveness in males and raises the question of mechanisms that maintain variation in male aggressiveness.

Sexual cannibalism is associated with female behavioural type, hunger state and increased hatching success

Body Size, Not Personality, Explains Both Male Mating Success and Sexual Cannibalism in a Widow Spider

It is shown that individual variation in aggression levels plays no direct role in the mating behavior of the Mediterranean black widow, and body size affects male mating success and occurrences of sexual cannibalism in females.

Factors influencing sexual cannibalism and its benefit to fecundity and offspring survival in the wolf spider Pardosa pseudoannulata (Araneae: Lycosidae)

The hypothesis that sexual cannibalism has evolved as an adaptive component of female foraging strategy and that it benefits offspring survival as a result of paternal investment is supported.

Feeding regime, adult age and sexual size dimorphism as determinants of pre-copulatory sexual cannibalism in virgin wolf spiders

Pre-copulatory cannibalism in virgin females was predicted by their food availability during adulthood, age at first male encounter and the relative body size of the courting male.

Male opportunistic mating increases with intensity of female sexual cannibalism in 3 web-building spiders

It is found that the occurrence of male opportunistic mating was positively, though not statistically significantly, correlated with the intensity of female sexual cannibalism, thus supporting the hypothesis that male opportunism mating may have evolved to respond to the selection pressure posed by femaleSexual cannibalism.

Does personality explain variation in the probability of sexual cannibalism in the orb-web spider Argiope aurantia?

It is found that aggressive foragers are more likely to attack their mates, but it is concluded that other, possibly adaptive reasons for cannibalism exist as much of the uncertainty in cannibalism occurrence remained unexplained.

The Importance of Ecological and Phylogenetic Conditions for the Occurrence and Frequency of Sexual Cannibalism

This review examines how ecological and phylogenetic factors may affect the occurrence and frequency of sexual cannibalism within and among species.



The Role of Body Size in Mating Interactions of the Sexually Cannibalistic Fishing Spider Dolomedes triton

Results suggest that male size does not influence courtship behavior, the likelihood of being attacked, or the male's ability to secure a mounting, but large males were superior at gaining copulations once mounted, suggesting benefits of large male body size.

Sexual Size Dimorphism Predicts the Frequency of Sexual Cannibalism Within and Among Species of Spiders

There is the first evidence that the degree of size difference between males and females is related to the phylogenetic distribution of sexual cannibalism among a broad range of spiders.

Safer sex with feeding females: sexual conflict in a cannibalistic spider

Mating strategies are to a large degree shaped by conflicts between the sexes, causing a rapid antagonistic coevolution of traits involved in reproduction. The view that sexual cannibalism represents

Cohabitation of juvenile females with mature males promotes sexual cannibalism in fishing spiders

This is the first study to suggest that juvenile experience can alter a female's propensity for sexual cannibalism, and emphasizes the point that studies of sexual selection and mating systems need to consider the effects of juvenile experience on adult behavior.

Sexual cannibalism in the fishing spider and a model for the evolution of sexual cannibalism based on genetic constraints

It is proposed that the act of sexual cannibalism in the fishing spider is non-adaptive, and a model for the evolution of premating sexual cannibalisms in spiders based on genetic constraints is developed.

Age Affects the Risk of Sexual Cannibalism in Male Crab Spiders (Misumena vatia)

Female crab spiders Misumena vatia (Thomisidae) regularly attacked prospective mates experimentally presented in pairs whose individuals differed in age, paralleled a decline in numbers of field-observed males, probably a consequence of their increasing vulnerability to sexual cannibalism.

Fitness consequences of sexual cannibalism in female Argiope bruennichi

It is concluded that the paternal investment hypothesis does not explain the existence of sexual cannibalism in A. bruennichi and probably not in other spider species with a pronounced sexual size dimorphism.

Sexual dimorphism in leg length among orb‐weaving spiders: a possible role for sexual cannibalism

It is argued that the relationship between sexual size dimorphism and relative male leg length within the Araneinae may be the result of selection imposed by sexual cannibalism by females.