Dispersal of released male sweetpotato weevil, Cylas formicarius (Coleoptera : Brentidae) in different seasons

Citation
T. Miyatake et al., Dispersal of released male sweetpotato weevil, Cylas formicarius (Coleoptera : Brentidae) in different seasons, APPL ENT ZO, 35(4), 2000, pp. 441-449
Citations number
45
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Entomology/Pest Control
Journal title
APPLIED ENTOMOLOGY AND ZOOLOGY
ISSN journal
0003-6862 → ACNP
Volume
35
Issue
4
Year of publication
2000
Pages
441 - 449
Database
ISI
SICI code
0003-6862(200011)35:4<441:DORMSW>2.0.ZU;2-0
Abstract
Dispersal of reared adult male sweetpotato weevils, Cylas formicarius (F.), was examined in different seasons using a mark-release-capture method in O kinawa, Japan, where a sterile insect release project has been conducted to eradicate the weevil. Release and capture were replicated 7 times in diffe rent seasons in the same locality consisting mainly of sweet potato and sug arcane fields. About 8,000 males were marked each time, thus 54,444 males i n total were released, and 14,746 of them were captured by pheromone traps (27.1%). Population parameters, including dispersal, capture and survival r ates of released males, and population density of wild adult males were est imated. Percentage captured and dispersal distance were positively correlat ed with mean temperature during each experiment. The highest estimated popu lation density of wild males was found in the summer. The results offer str ategical parameters for a successful eradication project against the weevil using the sterile insect technique.