Photoperiodic changes according to global warming in wing-form determination and diapause induction of a water strider, Aquarius paludum (Heteroptera : Gerridae)
スポンサーリンク
概要
- 論文の詳細を見る
In the 1991-strain of Aquarius paludum in Kochi, both critical photoperiods for wing-form and diapause shifted to longer values by 1h when specimens were grown under gradually decreasing photoperiods. However, the 1999-strain didn't respond at all to decreasing (14.5L to 13.5L) or increasing (12.5L to 13.5L) photoperiods. Photoperiodic response for wing-form determination by the 2002-strain was witnessed only in a small range between 60% and 95% as the proportion of long-winged form, and the critical photoperiod (14L) was a little bit longer than the critical value of 13.75L for the 1991-strain. The critical photoperiod for diapause induction in the 2002-strain was estimated to be 13.5L-10.5D under a constant photoperiod, which was one-half hour longer than that of the 13L-11D shown by the 1991-strain. In August and September in Kochi, the critical day lengths for wing-form determination and diapause induction of the 1999-2002-strains remain to be 14L-10D and 13.5L-10.5D, respectively, even under decreasing day-length. Therefore, the two critical values were "shorter" than those of "15L-9D" and "14L-10D" of the 1991-strain. The annual average temperature (17.1±0.5℃) and annual average high and low temperatures (35.6±1.3, -3.1±0.9) in 1991-2000 were higher than those (16.4±0.5, 34.9±1.1, -4.4±1.4) a decade ago (1981-1990). In Kochi, the global warming in the last two decades may have caused A. paludum to select "shorter" critical photoperiods for the currently dominant strain (1999-2002-strain) in terms of wing-form determination and diapause induction under decreasing day-length in August to October (14.8h to 11.5h) in compared to the former strain (1991-strain) dominant a decade ago. This "shorter" critical photoperiod leads to a longer active fall season for reproduction and larval growth of A. paludum.
- 日本応用動物昆虫学会の論文
- 2005-08-25
著者
-
Nitta Shuichi
Laboratory Of Environmental Physiology Faculty Of Education Kochi University
-
Harada Tetsuo
Laboratory Of Environmental Physiology Faculty Of Education Kochi University
-
ITO Ken
Laboratory of Environmental Physiology, Faculty of Education, Kochi University
-
Ito Ken
Laboratory Of Environmental Physiology Faculty Of Education Kochi University
-
HARADA TETSUO
Laboratory of Environmental Physiology, Faculty of Education, Kochi University
-
Harada Tetsuo
Laboratory of Advanced Science and Technology for Industry, University of Hyogo, Kamigoori, Hyogo 678-1205, Japan
関連論文
- An Integrated Effect of Protein Intake at Breakfast and Morning Exposure to Sunlight on the Circadian Typology in Japanese Infants Aged 2-6 Years
- Effects of Meal Habits and Alcohol/Cigarette Consumption on Morningness-Eveningness Preference and Sleep Habits by Japanese Female Students Aged 18-29
- PB2-3 Comparative Study on the Effects of Breakfast and Supper on Circadian Typology and Seep Habit of Japanese Infants Aged 0-6 yrs(Proceedings of The 8th International Congress of Physiological Anthropology)
- Correlation between Breakfast Tryptophan Content and Morningness-Eveningness in Japanese Infants and Students Aged 0-15 yrs
- Morningness-eveningness preference and mood in Japanese junior high school students
- Effect of daytime light conditions on sleep habits and morningness-eveningness preference of Japanese students aged 12-15 years
- Photoperiodic changes according to global warming in wing-form determination and diapause induction of a water strider, Aquarius paludum (Heteroptera : Gerridae)
- In-situ Contamination Thickness Measurement by Novel Resist Evaluation System at NewSUBARU
- Transmission Grating Fabrication for Replicating Resist Patterns of 20 nm and Below