Female fecundity and offspring survival are not increased through sexual cannibalism in the spider Larinioides sclopetarius
| Autor: | Marie E. Herberstein, Jutta M. Schneider, David Mayntz, James C. O’Hanlon, S. A. Deventer |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Male Offspring media_common.quotation_subject Zoology Larinioides sclopetarius Insect ORB-WEB SPIDER SIZE DIMORPHISM 010603 evolutionary biology 01 natural sciences Predation web building feeding ecology Sexual Behavior Animal Cricket INTRASPECIFIC COMPETITION BENEFITS Animals Cannibalism 0501 psychology and cognitive sciences 050102 behavioral science & comparative psychology Ecology Evolution Behavior and Systematics media_common Spider biology Ecology 05 social sciences Spiders biology.organism_classification Fecundity Biological Evolution nutrition Fertility MALES Sexual cannibalism spider silk GROWTH Female GENERALIST PREDATOR Nutritive Value offspring quality |
| Zdroj: | Deventer, S A, Herberstein, M E, Mayntz, D, O'Hanlon, J C & Schneider, J M 2017, ' Female fecundity and offspring survival are not increased through sexual cannibalism in the spider Larinioides sclopetarius ', Journal of Evolutionary Biology, vol. 30, no. 12, pp. 2146-2155 . https://doi.org/10.1111/jeb.13178 |
| ISSN: | 1420-9101 |
| Popis: | Many hypotheses explaining the evolution and maintenance of sexual cannibalism incorporate the nutritional aspect of the consumption of males. Most studies have focused on a fecundity advantage through consumption of a male; however, recent studies have raised the intriguing possibility that consumption of a male may also affect offspring quality. In particular, recent studies suggest prolonged survival for offspring from sexually cannibalistic females. Here, we measured the protein and lipid content of males compared to insect prey (crickets), quantified female nutrient intake of both prey types and finally assessed how sexual cannibalism affects female fecundity and spiderling quality in the orb-web spider Larinioides sclopetarius. We found no evidence that sexual cannibalism increased fecundity when compared to a female control group fed a cricket. Contrary to previous studies, spiderlings from females fed a male showed reduced survival under food deprivation compared to spiderlings from the control group. Offspring from females fed a male also tended to begin web construction sooner. The low lipid content of males compared to crickets may have reduced offspring survival duration. Whether additional proteins obtained through consumption of a male translate to enhanced silk production in offspring requires further investigation. |
| Databáze: | OpenAIRE |
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