Gender-specific differences in cannibalism between a laboratory strain and a field strain of a predatory mite

Experimental & Applied Acarology
A M RevynthiM Egas

Abstract

Many phytoseiid species, including Phytoseiulus persimilis, are known to engage in cannibalism when food is scarce and when there is no possibility to disperse. In nature adult females of P. persimilis are known to disperse when prey is locally depleted. Males, in contrast, are expected to stay and wait for potential mates to mature. During this phase, males can obtain food by cannibalizing. Therefore, we hypothesize that male P. persimilis exhibit a higher tendency to cannibalize than females. Because rearing conditions in the laboratory usually prevent dispersal, prolonged culturing may also affect cannibalistic behavior. We hypothesize that this should especially affect cannibalism by females, because they consume far more food. We tested these hypotheses by comparing males and females from two strains, one of which had been in culture for over 20 years, whereas the other was recently collected from the field. It is known that this predator can discriminate between kin and non-kin and prefers cannibalizing the latter, hence to construct lines with high relatedness we created isofemale lines of these two original strains. We subsequently tested to what extent the adult females and males of the original strains and the isofema...Continue Reading

References

Jul 1, 1964·Journal of Theoretical Biology·W D Hamilton
Jul 1, 1964·Journal of Theoretical Biology·W D Hamilton
Nov 26, 2003·Experimental & Applied Acarology·Peter Schausberger
Oct 24, 2006·Trends in Ecology & Evolution·Lawrence G Harshman, Anthony J Zera
Mar 5, 2011·Journal of Evolutionary Biology·A GardnerG Wild
Sep 18, 2015·Ecology·Kunio Takatsu, Osamu Kishida

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Citations

Sep 27, 2020·Experimental & Applied Acarology·Alexandra M RevynthiMartijn Egas

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Software Mentioned

GLMER
lme4
R
R Development Core Team

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