栗山天牛繁殖生物学研究

Studies on the reproductive biology of Massicus raddei

为进一步搞清栗山天牛Massicus raddei成虫的生物、生态学习性,围绕成虫补充营养、雌雄成虫简易区别方法及行为学等方面展开了研究。结果表明,栗山天牛成虫喜食酸甜的水果,嗜食性程度按由大到小的排序为:桃>梨=李=杏>苹果。栗山天牛雄虫具有2型现象:第1种类型体形较大,长约40 mm,鞘翅满被污黄色绒毛,体色较黄;第2种类型体形较小,长约30 mm,鞘翅满被黄黑色绒毛,体色较黑;雌虫均为第一种类型,大小及体色与雄虫相似。栗山天牛成虫具有多次交尾的习性,其产卵习性也很特殊,不咬刻槽,而是直接将卵产在树皮裂缝中,并分泌胶状物将卵包埋,只露出椭圆形胶块,因而在野外不易找到。

In order to gain further knowledge on the biological,ecological habits of Massicus raddei adult,researches on the extra-nutrition of adults,behavioral science and the simply distinguish method between male and female have been carried out,so as to provide scientific basis for effectively controlling of the pest. Results indicated that the adult like eating sweet and sour fruit,the degree of adephagia can follow the orders frombig to small：peach 〉 pear = plum= apricot 〉 apple;themale adult ofMassicus raddei is imorphism：the first type is larger,about 40mmlong,its elytra coveredwith yellowvilli,its body color is yellow;the second type is smaller,about 30 mm long,its elytra covered with yellow black villi,its body color is black. Females are all the first type,size and color are similar to those ofmales.Massicus raddei adult havemultiplemating habits,the spawning behavior is also very special：don’t bite groove,but directly to lay the eggs in the bark cracks,and secrete jelly to embed the eggs,only show the oval rubber block,therefore not easy to find in thewilderness.