INVESTIGATIONS ON THE INFLUENCE OF THE PREDATOR POPULATION-DENSITY ON THE RATE OF OVIPOSITION IN AMBLYSEIUS-FINLANDICUS OUD (ACARI, PHYTOSEIIDAE)

Author(s)
P SCHAUSBERGER
Abstract

Relating to the frequency of occurrence Amblyseius finlandicus Oud. is the dominating species of the family Phytoseiidae in Austria. Series of experiments have been made in the laboratory to investigate the influence of the predator population density on the rate of oviposition.

In spite of sufficient food supply the rate of reproduction decreased with an increasing number of mites per rearing unit. Single kept females had rates of oviposition (1.9 eggs/day/female) significantly different from females kept in groups (2, 5 or 8 mites per unit with 1.6, 1.2 and 1.1 eggs/day/female).

Organisation(s)
Journal
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz.
Volume
65
Pages
36-39
No. of pages
4
ISSN
0340-7330
Publication date
1992
Peer reviewed
Yes
Austrian Fields of Science 2012
106047 Animal ecology
Portal url
https://ucris.univie.ac.at/portal/en/publications/investigations-on-the-influence-of-the-predator-populationdensity-on-the-rate-of-oviposition-in-amblyseiusfinlandicus-oud-acari-phytoseiidae(513204e2-c691-42d8-b9f4-c7bd651fb4cd).html