Researches on Population Ecology
Volume 35, No. 1, 1993

Contents

Kato, K. and Hijii, N.
Optimal clutch size of the chestnut gallwasp, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae)
1-14


Okada, H. and Nakasuji, F.
Comparative studies on the seasonal occurrence, nymphal development and food menu in two giant water bugs, Diplonychus japonicus Vuillefroy and Diplonychus major Esaki (Hemiptera: Belostomatidae)
15-22


Widiarta, I N., Ikeda, T., Fujisaki, K. and Nakasuji, F.
Comparison of dispersal ability between the green leafhoppers, Nephotettix virescens and N. cincticeps (Hemiptera: Cicadellidae) by tethered flight
23-29


Aryawan, I G. N., Widiarta, I N., Suzuki, Y. and Nakasuji, F.
Life table analysis of the green rice leafhopper, Nephotettix virescens (Distant) (Hymiptera: Cicadellidae) an efficient vector of rice tungro disease in asynchronous rice fields in Indonesia
31-43


Nishida, T.
Spatial relationships between mate acquisition probability and aggregation size in a gregarious coreid bug, (Colpula lativentris): A case of the ideal free distribution under perceptual constraints
45-56


Toquenaga, Y.
Contest and scramble competitions in Callosobruchus maculatus (Coleoptera: bruchidae) II. Larval competition and interference mechanisms
57-68


Kawata, M.
Relative importance of direct and indirect interaction among individual snails
69-77


Momose, K. and Inoue, T.
Pollination and factors limiting fruit set of chasmogamous flowers of an amphicapric annual, Polygonum thunbergii (Polygonaceae)
79-93


Kakutani, T., Inoue, T., Tezuka, T. and Maeta, Y.
Pollination of strawberry by the stingless bee, Trigona minangkabau, and the honey bee, Apis mellifera: An experimental study of fertilization efficiency
95-111


Sawada, H., Kusmayadi, A., Subroto, S. W. G., Suwardiwijaya, E. and Mustaghrin
Comparative analysis of population characteristics of the brown planthopper, Nilaparvata lugens Stal, between wet and dry rice cropping seasons in West Java, Indonesia
113-137