@article{oai:repository.naro.go.jp:00001668,
 author = {ABE, Junichiro and 安部, 順一朗 and ABE, Jun-ichiro and 浦野, 知 and URANO, Satoru and 長坂, 幸吉 and NAGASAKA, Koukichi and 高林, 純示 and TAKABAYASHI, Junji},
 journal = {近畿中国四国農業研究センター研究報告, BULLETIN of THE NATIONAL AGRICULTURAL RESEARCH CENTER for WESTERN REGION},
 month = {Mar},
 note = {Release ratio of Cotesia vestalis, a braconid parasitoid of diamondback moth, Plutella xylostella (hereafter called, DBM), to suppress the population growth of its host to be less than one was evaluated in greenhouses of Komatsuna chinese mustard, Brassica rapa. The release ratios of adult female wasps to DBM larvae were 1 : 6.4 (Test 1), 1 : 11 (Test 2), and 1 : 22 (Test 3). Six yellow colored sponges soaked with 50% aqueous solution of honey were provided as food for C. vestalis at each test. In test 1 and 2, the population growth rates of DBM were suppressed to be less than one (0.8 and 0.2 respectively), whilst the rate was increased more than one in the greenhouses in which no wasps were released. In test 3, the population growth rate was slightly higher than one (1.2). The estimated incidence of parasitism of test 1, 2 and 3 were 89.1%, 87.7%, and 93.1%, respectively. We concluded that C. vestalis successfully suppressed the population growth of DBM over the two successive generations with the three release ratios.},
 pages = {125--132},
 title = {ハウス栽培のコマツナを低密度で加害するコナガに対するコナガサムライコマユバチの必要放飼比率},
 volume = {6},
 year = {2007},
 yomi = {アベ, ジュンイチロウ and ウラノ, サトル and ナガサカ, コウキチ and タカバヤシ, ジュンジ}
}