摘要
苹小吉丁（AgrilusmaliMatsumura）属鞘翅目（Coleoptera）吉丁甲科（Bupresidea），以幼虫蛀食苹果等果树的韧皮部为害，是苹果树的毁灭性害虫。该虫自1995年在新疆伊犁发现以来忙J，对当地珍贵的新疆野苹果——塞威氏苹果（Malussi恍瑙以（Ledeb．）Roem．）林造成重大危害。据伊犁州林业局统计，2011年苹小吉丁在野苹果林中发生面积达到3867hm2，占野苹果林总面积的40％，已造成667hm。野苹果林被害枯死。该虫已严重威胁着整个野生苹果林的生存，2013年国家林业局将其列入全国林业危险性有害生物名单。
In recent years, Agrilus mali Matsumura has outbroken in the Xinjiang wild fruit forest, and become the primary threat to Malus sieversii. In early study, the larvae of Agrilus mall were divided into six instars. However, the particular reason and method were not mentioned, and the larvae of Genus Agrilus were usually divided into four or five instars. For better pest forecasting and control strategies, the determination of larval instars was studied again. A. mali larvae were sampled periodically in forest, and the eggs were collected to hatch the first instar larvae. Three characteristics （i. e. peristoma width, urogomphus length and body length） were measured by binocular mi- croscope with an eyepiece micrometer. According to the Dyar＇ s law, the data were managed with frequency analy- sis, and examined by one-way ANOVA method, Crosby ratio and checked with Larvae which were molting when sampling. The results showed that, the A. mali Larva has five instars, and all three determination characteristics are effective except body length.
出处
《林业科学研究》
CSCD
北大核心
2013年第6期786-789,共4页
Forest Research
基金
国家林业公益性行业科研专项项目(201404403)
