The direct cost of traumatic secretion transfer in hermaphroditic land snails: individuals stabbed with a love dart decrease lifetime fecundity

Proceedings. Biological Sciences
Kazuki Kimura, Satoshi Chiba

Abstract

Several taxa of simultaneously hermaphroditic land snails exhibit a conspicuous mating behaviour, the so-called shooting of love darts. During mating, such land snail species transfer a specific secretion by stabbing a mating partner's body with the love dart. It has been shown that sperm donors benefit from this traumatic secretion transfer, because the secretions manipulate the physiology of a sperm recipient and increase the donors' fertilization success. However, it is unclear whether reception of dart shooting is costly to the recipients. Therefore, the effect of sexual conflict and antagonistic arms races on the evolution of traumatic secretion transfer in land snails is still controversial. To examine this effect, we compared lifetime fecundity and longevity between the individuals that received and did not receive dart shooting from mating partners in Bradybaena pellucida. Our experiments showed that the dart-receiving snails suffered reduction in lifetime fecundity and longevity. These results suggest that the costly mating behaviour, dart shooting, generates conflict between sperm donors and recipients and that sexually antagonistic arms races have contributed to the diversification of the morphological and behavioura...Continue Reading

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Citations

Jul 3, 2015·Proceedings. Biological Sciences·Steven A RammLukas Schärer
Jun 2, 2016·Molecular Reproduction and Development·Joris M Koene
Mar 10, 2017·Journal of Evolutionary Biology·A M Franklin, D Stuart-Fox
Nov 6, 2018·Genome Biology and Evolution·Keisuke ShimizuKazuyoshi Endo
Jan 20, 2021·Biology Letters·Nathan W Burke, Gregory I Holwell

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