Relationships between Food Substances and Developmental Success in Amblyseius sojaensis EHARA (Acarina : Phytoseiidae)
1988 年 23 巻 1 号 p. 45-51
詳細
1988 年 23 巻 1 号 p. 45-51
The developmental success of Amblyseius sojaensis EHARA on 2 species of spider mites, Panonychus citri (McGREGOR) and Tetranychus kanzawai KISHIDA, and tea pollen was investigated on detached leaves of citrus and kidney bean. Amblyseius sojaensis readily consumed larvae and nymphs of P. citri, but almost no egges were utilized. The percentage of individuals attaining maturity was higher when the immature active stages of P. citri were provided than when all stages were provided. In both cases less than 50% individuals completed development whereas on tea pllen alone 80% reached maturity. Amblyseius sojaensis did not develop when either all stages or immature active stages of T. kanzawai were provided. In this case, A.sojaensis larvae frequently became entangled in the webbing of T. kanzawai and their survival was shorter than that on food-absent leaves. The results indicate that A. sojaensis is more dependent on other foods such as tea pollen than on spider mites.
