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

• DOI: 10.11158/saa.4.1.13
• Publication Date: 2015-09-28T21:35:17Z
• Authors: HUIJIE ZHANG; JIANSHE LI; YANHUA LIANG
• Keywords: Lipaphis erysimi; Aphis gossypii; Myzus persicae

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