不同虫态短额负蝗过冷却点和结冰点的测定
Determination of the supercooling and freezing points of different developmental stages of Atractomorpha sinensis (Orthoptera: Pyrgomorphidae)
李文博1** Muhammad·Naeem1 罗昌新1 崔 娟2 王青松3 陈欢欢1**
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DOI：10.7679/j.issn.2095-1353.2025.091
作者单位：1. 曲靖师范学院生物资源与食品工程学院，曲靖 655011；2. 吉林农业科技学院农学院， 吉林 132101；3. 西南大学柑桔研究所，重庆 400712
中文关键词：短额负蝗；过冷却点；结冰点；耐寒性
英文关键词：Atractomorpha sinensis; supercooling point; freezing point; cold hardiness
中文摘要：【目的】 本研究旨在明确短额负蝗
Atractomorpha sinensis不同虫态的耐寒能力，为预测曲靖地区该害虫田间越冬情况及翌年发生动态提供理论依据。
【方法】 过冷却点测定仪测定短额负蝗各虫态（虫龄）过冷却点和体液结冰点。
【结果】 短额负蝗卵的过冷却点和结冰点最低，分别为﹣18.60和﹣9.13 ℃，5龄若虫冷却点和雌性成虫结冰点最高，分别为﹣11.50和﹣6.97 ℃。同一虫态不同个体过冷却点和结冰点的变异均符合正态分布。雄成虫的过冷却点和结冰点分别为﹣13.00和﹣7.88 ℃，低于雌成虫的﹣12.03和﹣6.97 ℃。
【结论】 短额负蝗卵的过冷却点最低，5龄若虫过冷却点最高。研究结果为揭示短额负蝗越冬机理和预测潜在分布区提供了理论依据。
英文摘要：
[Aim] The
purpose of this study was to clarify the cold tolerance of different insect
states of Atractomorpha sinensis, and to provide a theoretical basis for
predicting the overwintering situation of the pest in the field and the
occurrence dynamics in the next year in Qujing area. [Methods] The supercooling point tester was used to
determine the stages (instars) of A.
sinensis. [Results] The
supercooling and freezing points of eggs were the lowest, -18.60 and -9.13 ℃, respectively. The supercooling
point of 5th instar nymphs, and the freezing point of adult females, were the
highest; -11.50 and -6.97 ℃, respectively. Variation in the supercooling and freezing points of individuals in the same stage of
development was normally distributed. The supercooling and freezing point of
adult males were -13.00 and -7.88 ℃, respectively, lower than those of
adult females, which were 12.03 and -6.97 ℃, respectively. [Conclusion] The supercooling point of A. sinensis eggs was the lowest among the developmental
stages examined, whereas that of 5th instar nymphs was the highest. These results provide
basic data on the overwintering mechanism of A. sinensis, and predict areas where this species could either
be found or establish.