U pavouků se často setkáváme se sexuálním kanibalismem, tedy situací, kdy je samec zabit a zkonzumován samicí při páření. U mikárie pospolité (Micaria sociabilis) se však role vyměnily a jsou to samice, které se ocitají při páření v ohrožení a často padají za oběť samcům. Tento tzv. reverzní sexuální kanibalismus je u studovaného druhu ovlivněn hned několika faktory, jako například stářím samice či dostupností potravy.
Citovaná a použitá literatura:
Aisenberg, A., Costa, F. G., & Gonzalez, M. (2011). Male sexual cannibalism in a sand-dwelling wolf spider with sex role reversal. Biological Journal of the Linnean Society, 103(1), 68-75.
Elgar, M. A., & Nash, D. R. (1988). Sexual cannibalism in the garden spider Araneus diadematus. Animal Behaviour, 36(5), 1511-1517.
Henriksson, S. (1997). Sexual cannibalism in the fishing spider and a model for the evolution of sexual cannibalism based on genetic constraints. Evolutionary Ecology, 11(3), 255-273.
Newman, J. A., & Elgar, M. A. (1991). Sexual cannibalism in orb-weaving spiders: an economic model. American Naturalist, 1372-1395.
Schütz, D., & Taborsky, M. (2005). Mate choice and sexual conflict in the size dimorphic water spider Argyroneta aquatica (Araneae, Argyronetidae). Journal of Arachnology, 33(3), 767-775.
Sentenská, L., & Pekár, S. (2013). Mate with the young, kill the old: reversed sexual cannibalism and male mate choice in the spider Micaria sociabilis (Araneae: Gnaphosidae). Behavioral Ecology and Sociobiology, 67(7), 1131-1139.
Sentenská, L., & Pekár, S. (2014). Eat or not to eat: reversed sexual cannibalism as a male foraging strategy in the spider Micaria sociabilis (Araneae: Gnaphosidae). Ethology, 120(5), 511-518.
In spiders, sexual cannibalism is a common phenomenon. While normally a male becomes a victim of the female during mating, in the spider Micaria sociabilis females are in danger as they are often killed during sexual interaction by males. In Micaria this so-called reversed sexual cannibalism is affected by several factors such as the age of the female and food availability.