Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Prey and predator emigration responses in the acarine system Tetranychus urticae-Phytoseiulus persimilis

Prey and predator emigration responses in the acarine system Tetranychus urticae-Phytoseiulus... Some of the processes that influence the emigration of prey and predatory mites from bean plants were investigated experimentally. The emigration of the prey depends on the damage they cause to the plants and on predator density. The predator's emigration rate is a decreasing function of prey density, and does not change (or it slightly decreases) when prey and predator numbers are increased maintaining the same prey/predator ratio. The probability of emigration of the predators is independent of their own density when prey are absent and density dependent when prey density is kep constant. Forty three per cent of the variability in the predator's instantaneous rate of emigration in the different experiments is accounted for by a two parameter negative exponential function of capture rate (number of prey eaten per predator and per unit of time). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Oecologia Springer Journals

Prey and predator emigration responses in the acarine system Tetranychus urticae-Phytoseiulus persimilis

Oecologia , Volume 61 (1) – Jan 1, 1984

Loading next page...
 
/lp/springer-journals/prey-and-predator-emigration-responses-in-the-acarine-system-Wy5NWA8H7n

References (36)

Publisher
Springer Journals
Copyright
Copyright © 1984 by Springer-Verlag
Subject
Life Sciences; Ecology; Plant Sciences
ISSN
0029-8549
eISSN
1432-1939
DOI
10.1007/BF00379099
Publisher site
See Article on Publisher Site

Abstract

Some of the processes that influence the emigration of prey and predatory mites from bean plants were investigated experimentally. The emigration of the prey depends on the damage they cause to the plants and on predator density. The predator's emigration rate is a decreasing function of prey density, and does not change (or it slightly decreases) when prey and predator numbers are increased maintaining the same prey/predator ratio. The probability of emigration of the predators is independent of their own density when prey are absent and density dependent when prey density is kep constant. Forty three per cent of the variability in the predator's instantaneous rate of emigration in the different experiments is accounted for by a two parameter negative exponential function of capture rate (number of prey eaten per predator and per unit of time).

Journal

OecologiaSpringer Journals

Published: Jan 1, 1984

There are no references for this article.