Nachrichtenblatt des Deutschen Pflanzenschutzdienstes (2002) 54, 307-311
Peter Blaeser, Marcel Lleonart i Sitjar and Cetin Sengonca (2002)
Laboruntersuchungen zur Entwicklung, Lebensdauer und Reproduktion von vier Amblyseius-Raubmilbenarten bei Ernährung mit Tetranychus urticae Koch (Acari: Tetranychidae) und Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)
[Laboratory studies on the development, longevity and reproduction of four Amblyseius predatory mites fed with Tetranychus urticae Koch (Acari: Tetranychidae) and Franklinielia occidentalis (Pergande) (Thysanoptera: Thripidae)]
Nachrichtenblatt des Deutschen Pflanzenschutzdienstes 54 (12), 307-311
Abstract: The present laboratory study dealt with the development, longevity and reproduction of four predatory mites namely: Amblyseius andersoni (Chant), Amblyseius californicus (Mc Gregor), Amblyseius cucumeris (Oudemans) and Amblyseius degenerans (Berlese) (Acari: Phytoseiidae) fed on Tetranychus urticae Koch (Acari: Tetranychidae) and Frankliniella occidentalis-larvae (Pergande) (Thysanoptera: Thripidae) as prey.
Results revealed that the prey species had a strong impact on the development of the predatory mites tested. A. californicus and A. degenerans were able to successfully achieve their full development when fed on T. urticae but not on F. occidentalis. Where all A. californicus individuals died during nymphal stage, while the eggs, laid by adult A. degenerans females fed on F occidentalis, did not hatch. On the other hand, A. andersoni and A. cucumeris were able to achieve full development regardless of the species of both preys offered. However, the percentage mortality of both predatory mites during development was about 17 % and 50 % when they were fed on T. urticae and F. occidentalis, respectively.
The longevity and reproduction of the predatory mites tested, were also strongly affected by the prey species offered. The longevity of A. andersoni and A. cucumeris was significantly reduced when both predatory mites were fed on F. occidentalis. The number of eggs laid daily by A. andersoni, A. californicus and A. degenerans was significantly reduced when the predatory mites had been fed on F. occidentalis compared to that with T. urticae:
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Database assignments for author(s): Cetin Sengonca, Peter Blaeser
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
