Applied Entomology and Zoology
Volume 42, Issue 1, 2007, Pages 27-33

Effect of spiders on inoculated populations of the migrant skipper Parnara guttata guttata Bremer et Grey (Lepidoptera: Hesperiidae) in untilled and tilled paddy fields (Article) (Open Access)

Motobayashi T.* , Ishijima C. , Murakami M. , Takagi M. , Taguchi A. , Hidaka K. , Kunimi Y.
  • a Field Science Center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan
  • b Field Science Center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan, Laboratory of Entomology, Department of Tea, National Institute of Vegetable and Tea Science, Kanaya, Shizuoka 428-8501, Japan
  • c Field Science Center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan
  • d Field Science Center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan
  • e Field Science Center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan
  • f University Farm, Faculty of Agriculture, Ehime University, Hojo 799-2424, Japan
  • g Department of Bioregulation and Biointeraction, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan

Abstract

To examine the effects of spider predation on pest populations in untilled paddy fields, we constructed life tables for immature stages of the migrant skipper Parnara guttata guttata Bremer et Grey artificially inoculated into untilled and tilled paddies in 2000 and 2001, and conducted a spider removal experiment in 2001. The life tables showed that the migrant skipper larval mortality rate was significantly higher in untilled than in tilled paddies. Unknown factors mainly contributed to this high mortality rate in untilled paddies. The spider removal experiment suggested that the presence of spiders was related to the high mortality rate of migrant skippers in untilled paddies.

Author Keywords

Paddy fields No-tillage Migrant skipper Spider assemblage Life table

Index Keywords

Lepidoptera Araneae Hesperiidae Parnara guttata
Link
https://www.scopus.com/inward/record.uri?eid=2-s2.0-34249697066&doi=10.1303%2faez.2007.27&partnerID=40&md5=e539ec1654f1358416275d283166e4da
DOI: 10.1303/aez.2007.27
ISSN: 00036862
Cited by: 2
Original Language: English