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    何超, 沈登荣, 尹立红, 等. 幼虫期短时高温对井上蛀果斑螟生长发育及生殖的影响[J]. 华南农业大学学报, 2020, 41(4): 68-75. doi: 10.7671/j.issn.1001-411X.201911005
    引用本文: 何超, 沈登荣, 尹立红, 等. 幼虫期短时高温对井上蛀果斑螟生长发育及生殖的影响[J]. 华南农业大学学报, 2020, 41(4): 68-75. doi: 10.7671/j.issn.1001-411X.201911005
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    HE Chao, SHEN Dengrong, YIN Lihong, et al. Effects of short-term exposure to high temperature at larval stage on the development and fecundity of Assara inouei[J]. Journal of South China Agricultural University, 2020, 41(4): 68-75. doi: 10.7671/j.issn.1001-411X.201911005
    Citation: HE Chao, SHEN Dengrong, YIN Lihong, et al. Effects of short-term exposure to high temperature at larval stage on the development and fecundity of Assara inouei[J]. Journal of South China Agricultural University, 2020, 41(4): 68-75. doi: 10.7671/j.issn.1001-411X.201911005
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    幼虫期短时高温对井上蛀果斑螟生长发育及生殖的影响

    Effects of short-term exposure to high temperature at larval stage on the development and fecundity of Assara inouei

      摘要
    • 摘要:
      目的  明确幼虫期短时高温对井上蛀果斑螟 Assara inouei 存活、生长发育及生殖的影响。
      方法  将井上蛀果斑螟初孵幼虫和老熟幼虫在32、35、38、41和44 ℃条件下，分别处理1、2和4 h，测定其存活率；将井上蛀果斑螟初孵幼虫和老熟幼虫在35、38、41 ℃条件下，分别处理1、2和4 h后，研究其发育历期、化蛹率、羽化率、雌雄虫寿命、单雌产卵量及子代卵孵化率等。
      结果  随着温度的升高和处理时间的延长，井上蛀果斑螟幼虫存活率逐渐减小。井上蛀果斑螟初孵幼虫在35 ℃处理下发育历期缩短，38和41 ℃处理下发育历期延长。老熟幼虫经短时高温处理后，随着温度的升高及处理时间的延长，化蛹率、蛹质量、蛹羽化率、产卵期、雌虫寿命及产卵量均逐渐减小，蛹历期逐渐延长。
      结论  井上蛀果斑螟初孵幼虫对短时高温的适应性高于老熟幼虫，短时高温对井上蛀果斑螟老熟幼虫的存活、生长发育及生殖有显著影响。本研究揭示了井上蛀果斑螟幼虫对高温的适应性，可为井上蛀果斑螟种群动态的预测预报提供科学依据。

       

      Abstract:
      Objective  To investigate the effects of short-term exposure to high temperature at larval stage on the survival rate, development and fecundity of Assara inouei.
      Method  Neonate larvae or mature larvae of A. inouei were exposed to high temperatures of 35, 38, 41 and 45 ℃ for 1, 2 and 4 h, respectively, and the survival rate was measured. After neonate larvae or mature larvae of A. inouei were exposed to high temperatures of 35, 38 and 41 ℃ for 1, 2 and 4 h, respectively, biological parameters of developmental duration, pupation rate, emergence rate, male and female longevity, number of eggs laid per female and egg hatching rate were investigated.
      Result  The survival rate of neonate larvae decreased gradually with the increase of temperature and treatment time. The developmental duration of neonate larvae was shortened by 35 ℃ treatment, but the developmental durations were prolonged by 38 and 41 ℃ treatments. After mature larvae were exposed to high temperature for short term, the pupation rate, pupal weight, emergence rate, oviposition period, female longevity and number of eggs laid per female decreased gradually, and pupal duration prolonged gradually with the increase of temperature and treatment time.
      Conclusion  Neonate larvae have higher adaptability to short-term high temperature than mature larvae. Short-term exposure to high temperature has significant effects on the survival, development and fecundity of mature larvae of A. inouei. The results reveal the adaptability of A. inouei larvae to high temperature, and provide a scientific basis for predicting the population dynamics of A. inouei.

       

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