文献类型：期刊文献

中文题名：松褐天牛龄级划分方法初探

英文题名：Primary Study on Methods to Determine Instars of Monochamus alternatus Larva

作者：柳建定[1] 李百万[1] 王菊英[1] 赵宝安[1] 舒金平[2]

第一作者：柳建定

机构：[1]浙江省余姚市森林病虫防治检疫站;[2]中国林科院亚热带林业研究所

年份：2008

卷号：28

期号：4

起止页码：84-86

中文期刊名：浙江林业科技

外文期刊名：Journal of Zhejiang Forestry Science and Technology

收录：北大核心:【北大核心2004】；

基金：余姚市科学技术局2006年度农业星火项目

语种：中文

中文关键词：松褐天牛;幼虫;前胸背板;头宽;虫龄;龄级

外文关键词：Monochamus alternatus,larva,prothorax back,instars

分类号：S763.38

摘要：分期收集12批松褐天牛越冬虫卵于林间进行笼养观察,自卵孵化开始直至蛹出现定期解剖林间笼养的1 018条刚脱皮松褐天牛幼虫,量取其头壳宽度、前胸背板长度及体长,观测数据表明:松褐天牛幼虫头宽和前胸背板宽度值频次分布明显呈现出5个峰形,说明松褐天牛幼虫的虫龄为5龄。松褐天牛前胸背板宽度较头宽值更易量测,可用于松褐天牛幼虫龄级划分,获得的各龄级数据值也可以供各地松褐天牛幼虫虫龄划分时的参考依据。
The eggs of Monochamus alternatus were collected in 12 different groups,and reared in the rearing cages in forest.The width of larval head and prothorax back of the caged 1018 larva in total were measured at different growth stages from the first instar larva to fully-developed larva in this experiment.The results demonstrated that there were five peak distribution values for both the width of larval head and the width of prothorax back,indicating there were totally five instars.The width of prothorax back which was easily measured could be used to determine the larval instars of M.alternatus.