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1991 Fiscal Year Final Research Report Summary

Evaluation on the paddy dwelling chironomids in view of IPM

Research Project

Project/Area Number 02660049
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 植物保護
Research InstitutionYamaguchi University

Principal Investigator

YANO Koji  Faculty of Agriculture Yamaguchi University, Professor, 農学部, 教授 (90038208)

Co-Investigator(Kenkyū-buntansha) HAMASAKI Shosaburo  Faculty of Agriculture Yamaguchi University, Lecturer, 農学部, 講師 (10035107)
HIRAO Jutaro  Faculty of Agriculture Yamaguchi University, Professor, 農学部, 教授 (40218764)
Project Period (FY) 1990 – 1991
KeywordsPaddy Dwelling Chironomids / Development of Larvae / Drought Resistance of Larvae / Population Density of Larvae and Adults / Density in Paddy Fields / Predaceous Insects / IPM
Research Abstract

1) Chironomid species recorded from paddy fields in the world
A 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 chironomids
Larval 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 fields
Adult 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 larvae
Drought 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 larvae
A 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.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Okazaki,A.and K.Yano: "Biology of Tanytarsus oyamai Sasa(Diptera:Chironomidae)" Transactions of the Shikoku Entomological Society. 19. 89-99 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 矢野 宏二,霜鳥 博史,濱崎 詔三郎,平尾 重太郎: "水田におけるユスリカ類成虫の発生個体数" 応動昆中国支会報. 33. 1-7 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yano,K.,M.Takayama and T.Ueda: "Biology of Glyptotendipes tokunagai Sasa(Diptera:Chironomidae)1.Development of immature stages." Transactions of the Shikoku Entomological Society. 19. 177-188 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 上田 徹,矢野 宏二: "ハイイロユスリカ(双翅目:ユスリカ科)の生態学的研究2.幼虫の耐乾燥性" 中国昆虫. 5. 15-19 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yano,K.: "Biology of the Chironomidae(Diptera)in paddy fields" Abstracts of the 19th Int.Congress of Entomology.(Beijin,China,June 28-July 4,1992). (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Okazaki, A. and K. Yano: "Biology of Tanytarsus oyamai Sasa (Diptera : Chironomidae)" Trans. Shikoku Ent. Soc.19(3). 89-99 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yano, K., H. Shimotori, S. Hamasaki and J. Hirao: "Estimating adult chironomid populations in paddy fields" Odokon Chugoku. 33. 1-7 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yano, K., M. Takayama and T. Ueda: "Biology of Glyptotendipes tokunagai Sasa (Diptera : Chironomidae) 1. Development of immature stages" Trans. Shikoku Ent. Soc.19(4). 177-188 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ueda, T. and K. Yano: "Biology of Glyptotendipes tokunagai Sasa (Diptera : Chironomidae) 2. Drought resistance of larvae" Chugoku Kontyu. 5. 15-19 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yano, K.: "Biology of the Chironomidae (Diptera) in paddy fields" Abstracts, 19th Int. Cong. Ent.Beijin, China. (1992)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-16  

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