| Publication Type: | Journal Article |
| Year of Publication: | 1985 |
| Authors: | K. Yano, Morakote, R., Satoh, M., Asai, I. |
| Journal: | Applied Entomology and Zoology |
| Volume: | 20 |
| Pagination: | 94-96 |
| Keywords: | agricultural entomology, biology, cereals, Deltocephalidae, distribution, effects, flight, food plants, hosts, natural enemies, Nephotettix cincticeps, parasites, parasitoids, pests, Pipunculidae, rice |
| Abstract: | Studies were carried out in rice fields in Yamaguchi City, Japan, in 1980-83 to determine the effect of parasitization by pipunculids on the behaviour of Nephotettix cincticeps. The pipunculid species present were Pipunculus mutillatus, P. javanensis, P. orientalis, Tomosvaryella oryzaetora and T. epichalca. Percentage parasitism was 0-8.71 (averaging 2.55) for light-trap collections and 2.29-26.57 (averaging 13.34%) for sweep-net collections. Examination of 236 examples of N. cincticeps attracted to windows on 25 July 1983 revealed no pipunculid larvae. However, both young and fully-developed larvae were found in examples of N. cincticeps collected in fields by both methods, and some of these adult hosts with empty abdomens contained fully-developed larvae. The results showed that the flight behaviour of N. cincticeps was affected by parasitization, and this was thought to be due to damage to the thoracic muscles and nervous system and to poor physiological condition. |