Sex-specific developmental plasticity of generalist and specialist predatory mites (Acari

Author(s)
Andreas Walzer, Peter Schausberger
Abstract

We studied developmental plasticity under food stress in three female-biased size dimorphic predatory mite species, Phytoseiulus persimilis, Neoseiulus californicus, and Amblyseius andersoni. All three species prey on two-spotted spider mites but differ in the degree of adaptation to this prey. Phytoseiulus persimilis is a specialized spider mite predator, N. californicus is a generalist with a preference for spider mites, and A. andersoni is a broad generalist. Immature predators were offered prey patches of varying density and their survival chances, dispersal tendencies, age and size at maturity measured. Amblyseius andersoni dispersed earlier from and had lower survival chances in low density prey patches than N. californicus and P. persimilis. Age at maturity was not affected by prey density in the generalist A. andersoni, whereas both the specialist P. persimilis and the generalist N. californicus accelerated development at low prey densities. Species-specific plasticity in age at maturity reflects opposite survival strategies when confronted with limited prey: to prematurely leave and search for other food (A. andersoni) or to stay and accelerate development (P. persimilis, N. californicus). In all species, size at maturity was more plastic in females than males, indicating that males incur higher fitness costs from deviations from optimal body size. (C) 2011 The Linnean Society of London, Biological Journal of the Linnean Society, 2011, 102, 650-660.

Organisation(s)
External organisation(s)
Universität für Bodenkultur Wien
Journal
Biological Journal of the Linnean Society: a journal of evolution
Volume
102
Pages
650-660
No. of pages
11
ISSN
0024-4066
DOI
https://doi.org/10.1111/j.1095-8312.2010.01593.x
Publication date
03-2011
Peer reviewed
Yes
Austrian Fields of Science 2012
106047 Animal ecology, 106048 Animal physiology
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/sexspecific-developmental-plasticity-of-generalist-and-specialist-predatory-mites-acari(cbd376c0-38ad-4635-bbb1-d766ba5341c9).html