Predation preference of Typhlodromus pyri and Kampimodromus aberrans (Acari

Author(s)
P Schausberger
Abstract

The predation preference of singly caged adult females and nymphs of Typhlodromus pyri and Kampimodromus aberrans for con- or heterospecific immature stages as prey was tested in the laboratory. Both polyphagous predatory mite species have been previously shown to interact directly through predation on each other. The present study demonstrated that the adult females of T. pyri and K. aberrans are able to discriminate between con- and heterospecific larvae and protonymphs and that they prefer to prey upon heterospecifics when given the choice. Hunger did not reduce the propensity of the females to prefer heterospecifics over conspecifics. For proto-and deutonymphs the trends followed the results obtained with the adult females, but the preference for heterospecifics was not distinct enough to be significant. In competitive situations reciprocal predation may be a crucial mechanism in the interaction of polyphagous phytoseiid species and may contribute significantly to population persistence. The results are discussed with regard to possible associations between the ability to discriminate con- and heterospecifics and the type of feeding specialization (generalists versus specialists).

Organisation(s)
External organisation(s)
Fed Off & Res Ctr Agr, Inst Phytomed
Journal
Experimental & Applied Acarology
Volume
23
Pages
389-398
No. of pages
10
ISSN
0168-8162
Publication date
05-1999
Peer reviewed
Yes
Austrian Fields of Science 2012
106047 Animal ecology
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/predation-preference-of-typhlodromus-pyri-and-kampimodromus-aberrans-acari(8b97c107-ce1b-45da-95f2-833cef2f276d).html