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不同储粮温湿度普通肉食螨的生长发育研究
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Development of cheyletus eruditus (schrank) at different levels of temperature and relative humidity of grain
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    摘要:

    普通肉食螨(Cheyletus eruditus (Schrank))是粮库中广泛存在的一种害虫的捕食性天敌。研究了粮仓常见的不同温湿度环境下(16、20、24、28 ℃和57%、75%、93%RH)普通肉食螨的生长发育历期、发育起点温度和有效积温。结果表明:普通肉食螨的生长发育分别经历卵、幼螨、原若螨、后若螨和雌成螨5个发育阶段;在一定的温度范围内,温度越高,发育历期越短,各螨态发育历期最短分别达3.4、4.4、4.1、3.9、15d,在28℃、75%RH下普通肉食螨的发育时间最短,为30.8d,在16℃、75% RH下发育时间最长,为118.6d;各螨态普通肉食螨几乎均是在75%相对湿度下的发育时间最短;普通肉食螨各螨态发育历期与温度呈logistics曲线回归关系;根据直接最优法计算发现普通肉食螨的一个世代、总历期的发育起点温度最低分别为10.39℃和11.64℃,有效积温最低分别是367.09日·度和543.72日·度。为普通肉食螨的大规模工厂化饲养以及应用奠定了基础。

    Abstract:

    Cheyletus eruditus (Schrank) has broad application prospects of controlling the stored grain insect pests (SGIP). Developmental duration, developmental threshold temperatur and effective accumulated temperature of C.eruditus were researched at 16, 20, 24 and 28℃ and relative humidity of 57%, 75% and 93% in laboratory. The results showed that it had five stages, including egg, larvae, protonymph, deutonymph and female adult. Development durations of all stages were all negatively correlated with temperature, and their shortest developmental duration of different stages was 3.4,4.4,4.1,3.9, 15 days, respectively. At 28℃, relative humidity 75%, the whole developmental duration was the shortest of 30.8 days, and at 16℃, relative humidity 75%, the development lasted 118.6 days, which was the longest in this study. At relative humidity 75%, almost all the stages of C. eruditus had the shortest developmental duration. There was significant logistics regression between developmental duration and temperature. Based on the direct optimum method, the developmental threshold temperatures of a generation and total developmental duration were 10.39℃ and 11.64℃ respectively, and the effective accumulated temperatures were 367.09 and 543.72 day-degrees. All these results provided a basis for rearing C.eruditus on large scale in factory and the application.

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贺培欢,伍祎,郑丹,张涛,李燕羽,江亚杰,曹阳.不同储粮温湿度普通肉食螨的生长发育研究[J].粮油食品科技,2017,25(2):89-95.

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  • 在线发布日期: 2017-03-23
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