Evaluation on the paddy dwelling chironomids in view of IPM

基于IPM的稻田摇蚊评价

• 批准号: 02660049
• 负责人: YANO Koji
• 金额: $ 1.41万
• 依托单位: Yamaguchi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02660049/
• 关键词: Paddy Dwelling Chironomids; Development of Larvae; Drought Resistance of Larvae; Population Density of Larvae and Adults; Density in Paddy Fields; Predaceous Insects; IPM; 成虫の密度; 水田内の分布

1) Chironomid species recorded from paddy fields in the worldA total of 158 species belonging to 3 subfamilies and 49 genera of the Chironomidae were recorded from the world paddy fields up to present. The insect group is the most diverse and dominant in the paddy field ecosystem.2)Development of chironomidsLarval instars, larval development, total effective temperature, developmental period, emergence rhythm of adults, adult longevity, number of ovarian eggs, sex ratio of Tanytarsus oyamai Sasa and Glyptotendipes tokunagai Sasa were studied and the data concerned were obtained.3)Population density in paddy fieldsAdult chironomid populations occurring in paddy fields were estimated by systematic samplings using emergence traps. It was estimated as 4.14 million in a paddy (691 m^2) during 3 months. It was about 6, 000/m^2. Larval density in the same paddy was estimated as 4.13 million during 65 days, and it seemed to be under estimated judging from the sampling method and other reasons.4)Drought resistance of larvaeDrought resistance of the last instar larvae of Glyptotendipes tokunagai was tested by rearings under different water content of media. Drying media allowed the larvae alive for 30 - 50 days until the water content decreased to 30%.5)Predeaceous insects of chironomid larvaeA total of 16 species belonging to Odonata (6 species), Hemiptera-Heteroptera (4 species) and Coleoptera (6 species) were observed as aquatic predatory species of chironomid larvae.Thirteen species among them were reared to find their feeding habit especially the number of chironomid larvae eaten for food.

1）世界稻田记录的摇蚊种 迄今为止，世界稻田共记录摇蚊科3亚科49属158种。该昆虫类群是稻田生态系统中种类最多、占优势的。2)摇蚊幼虫发育、幼虫发育、总有效温度、发育周期、成虫羽化节律、成虫寿命、卵巢卵数、Tanytarsus oyamai性别比对笹竹和德永水螅进行了研究并获得了有关数据。 3)稻田中的摇蚊成虫种群密度稻田是通过使用出苗陷阱进行系统采样来估计的。据估计，3 个月内，一片稻田 (691 m^2) 中的细菌数量为 414 万。大约是 6, 000/m^2。 65天内同一稻田的幼虫密度估计为413万尾，从取样方法等原因来看，似乎低估了估计值。4）幼虫的抗旱性通过饲养试验了德永水螅末龄幼虫的抗旱性。不同介质含水量下。干燥介质使幼虫存活30-50天，直至含水量降至30%。5)摇蚊幼虫的前驱昆虫共16种，分别属于蜻蜓目(6种)、半翅目-异翅目(4种)和鞘翅目(6种)。物种）被观察为摇蚊幼虫的水生捕食物种。其中 13 种被饲养以寻找其食物习性尤其是以摇蚊幼虫为食的数量。