A field evaluation of the sexual competitiveness of sterile melon flies, Dacus (Zeugodacus) cucurbitae |
| |
| Authors: | OSAMU IWAHASHI YOSIAKI ITO MASAE SHIYOMI |
| |
| Institution: | Entomological Laboratory, University of the Ryukyus, Nishihara, Okinawa 903-01;Laboratory of Applied Entomology and Nematology, Nagoya University, Nagoya 464;Ecology Division, National Grassland Research Institute, Nishinasuno, Nasu, Tochigi 329-27, Japan |
| |
| Abstract: | ABSTRACT. - 1 The sexual competitiveness of sterile melon fly males Ducus (Zeugodacus) cucurbitue Coquillett] was estimated under field conditions.
- 2 The value of competitiveness was about 0.8 for flies in the fifth to tenth generation from the beginning of mass-rearing, but decreased to about 0.2 in the eighteenth generation.
- 3 The sexual competitiveness estimated using laboratory data was near unity even in the final stage of our study.
- 4 It was concluded that the field evaluation of sexual competitiveness is essential to determine the quality of the insects reared for purposes of pest control.
|
| |
| Keywords: | Sterile insect technique sexual competitiveness melon fly |
|
|
