Effects of temperature and winter diapause on survival and development in bivoltine and trivoltine ecotypes of the rice stem maggot, Chlorops oryzae Matsumura (Diptera : Chloropidae), reared on a winter host
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概要
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In Chlorops oryzae, winter diapause in the first larval stage is induced by short days in the egg stage and maintained by short days in the larval stage. On wheat plants (winter host), most diapause and non-diapause larvae failed to pupate and died within 50 days at 23℃ regardless of photoperiod. When diapause larvae were reared on wheat plants at 10, 15 or 20℃ under LD12 : 12, the survival rates increased with decreasing temperatures. Diapause development at 10℃ was completed about 70-90 and 40-50 days in the Akita (bivoltine, 39°N) and Aichi (trivoltine, 35°N) strains, respectively. The survival rates on wheat seedlings at 23℃ in diapausing larvae of the Akita strain increased with increasing periods of previous exposure to 10℃ from 41 to 80 days. Aichi larvae showed higher survival rates regardless of the period at 10℃. It appears that low temperature promotes survival of the larvae on wheat plants, and larvae which complete diapause development can grow to the pupal stage on winter hosts.
- 日本応用動物昆虫学会の論文
- 1998-02-25
著者
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Takeda Mitsuyoshi
Tohoku National Agricultural Experiment Station
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Takeda Mitsuyoshi
Tohoku National Agricultural Experiment Station : (present Address)national Research Institute Of Ve
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Nagata T
Ibaraki Univ. Ibaraki Jpn
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Nagata Toru
Tohoku National Agricultural Experiment Station:national Institute Of Agro-environmental Sciences
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Nagata Toru
Tohoku National Agricultural Experiment Station : (Present address)Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Idaraki University
関連論文
- Effects of Photoperiod and Temperature on Larval Development and Summer Diapause in Two Geographic Ecotypes of the Rice Stem Maggot, Chlorops oryzae MATSUMURA (Diptera: Chloropidae)
- Photoperiodic Induction, Maintenance and Termination of Winter Diapause in Two Geographic Ecotypes of the Rice Stem Maggot, Chlorops oryzae MATSUMURA (Diptera: Chloropidae)
- Effects of temperature and winter diapause on survival and development in bivoltine and trivoltine ecotypes of the rice stem maggot, Chlorops oryzae Matsumura (Diptera : Chloropidae), reared on a winter host
- Effects of Photoperiod and Age of Rice Plant on Larval Development in Two Geographic Ecotypes of Chlorops oryzae MATSUMURA (Diptera: Chloropidae)