Seasonal Host Utilization of Mycophagous Ladybird Illeis koebelei (Coccinellidae: Coleoptera).

DOI JASI Web Site 22 References
  • Takeuchi Masatoshi
    Environment and Landscape, Junior College of Tokyo University of Agriculture
  • Sasaki Yuki
    Environment and Landscape, Junior College of Tokyo University of Agriculture
  • Sato Chiaya
    Environment and Landscape, Junior College of Tokyo University of Agriculture
  • Iwakuma Shiho
    Environment and Landscape, Junior College of Tokyo University of Agriculture
  • Isozaki Aya
    Environment and Landscape, Junior College of Tokyo University of Agriculture
  • Tamura Masato
    Environment and Landscape, Junior College of Tokyo University of Agriculture

Bibliographic Information

Other Title
  • キイロテントウの寄主利用の季節性
  • キイロテントウ ノ キシュ リヨウ ノ キセツセイ

Search this article

Abstract

Seasonal use of powdery mildews by the mycophagous ladybird, Illeis koebelei, was observed in Setagaya. In the field, I. koebelei shows seasonal changes in host use and breeds regularly on Microsphaera pulchra var. pulchra that infests Benthamidia florida, Oidium sp., that infests Pyracantha coccinea in spring, Phyllactinia moricola that infests Morus australis, and Sphaerotheca cucurbitae that infests Trichosanthes kllirowii var. japonica in autumn. On these fungus species under laboratory conditions, larval development of the ladybird was completed (within 20 days at 24°C) with a high survival rate. Thus, the seasonal occurrence of I. koebelei may be synchronized with the abundance of essential fungi. This study showed that I. koebelei feeds on 11 species of powdery mildews, including Sphaerotheca, Podosphaera, Microsphaera, Phyllactinia and Oidium. However, no species of the Uncinula, Uncinuliella and Erysiphe genera were suitable food for the ladybird.

Journal

References(22)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top