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31 July 1998 Host selection by parasitic Allothrombium ovatum larvae (Acari: Trombidiidae) and mite-aphid population dynamics on cotton, wheat and rape
Yincai Dong, Jinian Feng, Zhi-Qiang Zhang
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Abstract

The hypothesis that the differences between the effectiveness of larvae of Allothrombium ovatum against Aphis gossypii on cotton but their limited effect on Rhopalosiphum padi on wheat and Myzus persicae are due to mite preference for A. gossypii-cotton is tested in laboratory experiments. Contrary to the prediction of the hypothesis, larvae of A. ovatum showed no significant preference for any leaves when given cotton, wheat and rape in three-choice tests, nor for any aphid species when given A. gossypii, R. padi and Myzus persicae, nor for any aphid-plant association when given A. gossypii on cotton, R. padi on wheat and M. persicae on rape. Observations on population dynamics of mite-aphid on three host plant species showed that larval mite populations were coupled with that of A. gossypii on cotton and R. padi on wheat, but not with M. persicae on rape. Patterns of larval mite interaction of three aphid species in the field are discussed in the light of the results of these experiments.

Yincai Dong, Jinian Feng, and Zhi-Qiang Zhang "Host selection by parasitic Allothrombium ovatum larvae (Acari: Trombidiidae) and mite-aphid population dynamics on cotton, wheat and rape," Systematic and Applied Acarology 3(1), 97-104, (31 July 1998). https://doi.org/10.11158/saa.3.1.16
Accepted: 12 May 1998; Published: 31 July 1998
KEYWORDS
Acari
aphids
host selection
parasites
Tritrophic interaction
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