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NAOSITE : Nagasaki University's Academic Output SITE > Institute of Tropical Medicine > Bulletin > Tropical medicine > Volume 21, No. 2 >


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Title: 昆虫の生理活性物質,幼若ホルモン類縁体とキチン形成阻害物質,の蚊幼虫に対する野外試験
Other Titles: Field Application of Biologically Active Substances of Insects, a Juvenile Hormone Analogue and a Chitin Synthesis Inhibitor, against Mosquito Larvae
Authors: 伊藤, 達也
Authors (alternative): Itoh, Tatsuya
Issue Date: 31-Aug-1979
Publisher: 長崎大学熱帯医学研究所 / Institute of Tropical Medicine, Nagasaki University
Citation: 熱帯医学 Tropical medicine 21(2). p73-84, 1979
Abstract: 1.昆虫の幼若ホルモン類縁の化合物methoprene (Altosid)と,キチン形成阻害物質dimilinのコガタアカイエカ,チカイエカ,ヒトスジシマカ幼虫に対する効果を野外で調べた.2.コガタアカイエカ幼虫に対しては, methopreneの二つの剤型, SR-10Fとbriquetを試みた.両者とも, 0.1ppmの濃度で施用すれば,施用直後は100%又は, 100%に近い羽化阻止が得られた. dimilinをコガタアカイエカに用いた場合は, 0.1ppmの濃度で,施用後4日間, 100%の致死をみた.3.チカイエカ幼虫に対しては, methopreneの二つの剤型sand granuleとbriquetを用いたが,実用的とは考えられなかった.4.ヒトスジシマカ幼虫に対しては, methopreneの四つの剤型SR-10, SR-10F, sand granule, briquetおよびdimilinを試し,また,ダイアジノン,フェニトロチオン,アベイトおよびDDTとの比較を試みた. methopreneのsand granuleとbriquetは100ppmの濃度で,約5週間も100%羽化を阻止し,dimilinは0.1ppmの濃度で約2週間100%致死を続けた.このことは,従来の有機リン系殺虫剤のダイアジノン,フェニトロチオン,アベイトおよび有機塩素系のDDTに比べて,より有効であるといえる. / A juvenile hormone analogue, methoprene, and a chitin synthesis inhibitor, dimihn, were tested against larvae of Culex tritaeniorhynchus, Cx. pipiens molestus and Aedes albopictus in the field. Two formulations of methoprene, SR-10F and briquet, were found to be of use at a dosage of 0.1ppm against larvae of Cx. tritaeniorhynchus in experimental rice fields, since the adult emergence from almost all larvae was inhibited immediately after the treatment. Dimilin was also found to be effective against the same mosquito, giving 100% inhibition of emergence at 0.1ppm for 4 days after the treatment. But methoprene briquet was not considered to be adequate against Cx. pipiens molestus larvae in septic tanks and underground water pools because of rather low rate of emergence inhibition even just after the treatment. Methoprene sand granule and briquet and dimilin were found to be very effective against larvae of Ae. albopictus in small cotainers. After the tratment, 100% inhibition of adult emergence was observed for about 5 weeks at 100ppm of methoprene and for at least 2 weeks at 0.1ppm of dimilin. The effectiveness against Ae. albopictus was superior to diazinon, fenitrothion, abate and DDT tested under the same situation.
URI: http://hdl.handle.net/10069/4254
ISSN: 03855643
Type: Departmental Bulletin Paper
Appears in Collections:Volume 21, No. 2

Citable URI : http://hdl.handle.net/10069/4254

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