Studies on aphid host selection by parasitic larvae of Allothrombium ovatum (Acari: Trombidiidae)

Huijie Zhang; Jianshe Li; Yanhua Liang

doi:10.11158/saa.4.1.13

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Huijie Zhang,¹ Jianshe Li,¹ Yanhua Liang²

¹Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng 044000, China
²Plant Protection Station of Linfen Prefecture of Shanxi Province, Linfen 041000, China

Abstract

Field survey during 1995–1996 in Shanxi province, China revealed that the rates of parasitism of Aphis gossypii, Myzus persicae, Schizaaphis graminum and Lipaphis erysimi by larvae of Allothrombium ovatum averaged 42.9%, 13.1%, 5.5% and 0.6%, respectively. Among different stages of A. gossypii , alatae were parasitized by more mites (mite load 2–4) than apterae (mite load 1–2). Laboratory choice tests using Ivelev index showed that the preference of larval mites for aphid hosts decreased in the order: A. gossypii (0.2168)> M. persicae (0.1004)> S. graminum (-0.0569) > L. erysimi (-0.5033).

Citation Download Citation

Huijie Zhang, Jianshe Li, and Yanhua Liang "Studies on aphid host selection by parasitic larvae of Allothrombium ovatum (Acari: Trombidiidae)," Systematic and Applied Acarology 4(1), 91-95, (1 July 1999). https://doi.org/10.11158/saa.4.1.13

Accepted: 1 June 1999; Published: 1 July 1999

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