Loxostege sticticalisの成長,発育,繁殖に対する毎日の温度変動の影響
Zun Xu1, Jing-Xian Zhou1, Dai-Jing Li1
1State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|August 31, 2025
まとめ
日々の気温の変動は 移動性害虫の成長,発達,繁殖を促進します しかし 昼間 の 極端 な 温度 は その 生命 サイクル と 人口 の 動態 に 害 を 及ぼし ます.
科学分野:
- 昆虫学
- 農業科学
- エコロジー
背景:
- Loxostege sticticalisは移動する農薬害虫である.
- 昆虫の害虫に対する 温度変動の影響を理解することは 集団の動態を予測し 農業への影響を管理する上で 極めて重要です
研究 の 目的:
- Loxostege sticticalisの成長,発達,繁殖に対する日々の気温変動の影響を調査する.
- 様々な恒定および変動する温度体制下でのライフテーブルパラメータを計算する.
主な方法:
- L.スティスティカリスの生命表のパラメータを,双性命理論を用いて計算した.
- 昆虫は毎日3度の恒温 (22,25,28°C) と3度の変動温度で平均温度が変化する.
- 100日間の人口動態の予測
主要な成果:
- 変動する温度 (レジムIとレジムII) は,常温と比較して,幼虫の寿命を短くし,卵の産卵を増加させた.
- 変動する温度レジムは,内在の増加率 (r=0.076d−1) を最大化し,有限の増加率 (λ=1.078d−1) と純生殖率 (R0=34.82) を最大化する.
- 幼虫の生存率,幼虫の体重,および成人の体重は,気温の変動下で低かった.
結論:
- 日々の気温の変動は,一般的にL. sticticalisの成長,発達,生育能力,および健康状態を高めます.
- 極端な昼間の気温は L. sticticalis の集団の確立に不利である.
- 気温の変動は,害虫集団の動態と繁殖の成功に大きな影響を与えます.
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