Seasonal Changes in Supercooling Points and Glycerol Content in Overwintering Larvae of the Asiatic Rice Borer From Rice and Water-Oat Plants
Seasonal Changes in Supercooling Points and Glycerol Content in Overwintering Larvae of the Asiatic Rice Borer From Rice and Water-Oat Plants
复制标题
DOI：
10.1603/022.038.0427
复制
发表时间：
2009-08-01
影响因子：
1.7
通讯作者：
Han, Yongqiang
中科院分区：
文献类型：
--
作者：
Hou, Maolin;Lin, Wei;Han, Yongqiang
二化螟Chilo suppressalis（步行者）是水稻的主要害虫。和菰（Zizania latifolia（Turcz））。水稻和水燕麦种群之间存在一定的生态和生理差异。为了确定是否有宿主相关的分化过冷能力，过冷点，甘油含量和其他生理参数的季节变化的自然发生C。比较了二化螟幼虫在水稻和水燕麦上越冬的情况。过冷却点在冬季（11月和12月）低，显着高于3月，并显着低于水燕麦人口比水稻人口在冬季。从水燕麦人口的幼虫经历了一个显着的重量损失，从12月至3月，在冬季比水稻人口更重。身体含水量（鲜重百分比）在冬季低，并在3月显着增加，没有检测到人口差异。血淋巴甘油含量在冬季中期较高，3月份显著下降，12月份种群间差异显著。血淋巴海藻糖含量在冬季增加，没有检测到种群差异。整个身体的葡萄糖和脂质含量变化不同的水稻和水燕麦种群在冬季。结果表明，血淋巴甘油含量的变化是引起亚洲二化螟越冬幼虫过冷却能力季节性变化的主要原因。
The Asiatic rice borer Chilo suppressalis (Walker) occurs mainly on rice Oryza sativa L. and water-oat Zizania latifolia (Turcz). Certain ecological and physiological differentiations between rice and water-oat populations have been shown. To determine whether there is host-associated differentiation in supercooling capacity, seasonal changes in supercooling points, glycerol content, and other physiological parameters of naturally occurring C. suppressalis larvae overwintering in rice and water-oat plants were compared over the winter. Supercooling points were low in the winter (November and December), significantly higher in March, and significantly lower in the water-oat population than in the rice population in the winter. Larvae from the water-oat population experienced a significant weight loss from December to March and were heavier than those from the rice population in the winter. Body water content (percentage of fresh weight) was low in the winter and increased significantly in March; no population differences were detected. Hemolymph glycerol content was high in the winter mid dropped significantly in March; interpopulation differences were significant in December. Hemolymph trehalose content increased in the winter, and no population differences were detected. Whole body glucose and lipid content varied differently between the rice and the water-oat populations over the winter. It was found that variations in hemolymph glycerol content were responsible for the host-associated seasonal changes in supercooling capacity of overwintering larvae of the Asiatic rice borer.