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Functional responses of Neoseiulus idaeus and Iphiseius degenerans (Acarina: Phytoseiidae) feeding on the cassava green mite, Mononychellus tanajoa (Acarina: Tetranychidae)

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Title Functional responses of Neoseiulus idaeus and Iphiseius degenerans (Acarina: Phytoseiidae) feeding on the cassava green mite, Mononychellus tanajoa (Acarina: Tetranychidae)
 
Creator Akpokodje, G.
Odebiyi, J.
Ochieng, R.
Herren, H.
 
Subject ECONOMIC IMPORTANCE
PREDATORS
CASSAVA
MEALYBUGS
ARTHROPODS
 
Description The functional responses of larva and female Iphiseius degenerans BERLESE and protonymph and female Neoseiulus idaeus (DENMARK & MUMA) were determined with different developmental stages of the cassava green mite (CGM), Mononychellus tanajoa BONDAR, as food supplied at densities of 1, 2, 5, 10, 20, 30, 40, and 50 individuals per 3,14cm² cassava leaf disc arena. All functional responses obtained were of the Holling's Type II curve with the highest plateaux when adult females of both N.idaeus and I. degenerans were preying on CGM eggs. Mean highest number of 14.3 CGM eggs/5-hours consumed by a female N. idaeus was not significantly different from the 13.0CGM eggs/5-hours of I. degenerans. There was a significant non-linear positive correlation between predator's search rate and prey density in all treatments. Larvae of I. degenrans displayed a unique search rate curve apparently associated with its non-obligatory predatory nature.
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Date 2018-12-19T07:01:21Z
2018-12-19T07:01:21Z
1990
 
Type Journal Article
 
Identifier Akpokodje, G., Odebiyi, J., Ochieng, R. & Herren, H. (1990). Functional responses of Neoseiulus idaeus and Iphiseius degenerans (Acarina: Phytoseiidae) feeding on the cassava green mite, Mononychellus tanajoa (Acarina: Tetranychidae). Bulletin de la Societe Entomologique Suisse, 63, 327-335.
0036-7575
https://hdl.handle.net/10568/98671
 
Language en