烟田蓼科杂草的重要天敌——褐背小萤叶甲的行为习性  

Studies on the behavior of Galerucella grisescens

作　　者：林智慧  杨建全 [2] 郑敏琳 [2] 赖禄祥  张玉珍 [3] 陈家骅 [2] 

机构地区：[1]三明烟草分公司,福建,三明,365000 [2]福建农林大学益虫研究室,福建,福州,350002 [3]福建省烟草公司,福建,福州,350003

出　　处：《华东昆虫学报》2005年第3期214-218,共5页Entomological Journal of East China

基　　金：福建省烟草专卖局科研项目

摘　　要：褐背小萤叶甲主要以幼虫和成虫取食叶肉及幼嫩生长点控制杂草,幼虫中以3龄幼虫为主要取食虫态.成虫可以多次交配,呈不连续产卵.成虫产卵以及2、3龄幼虫偏好叶背面,而雌雄成虫的取食对叶片正、背面选择性不明显.雄成虫、2、3龄幼虫具有较强的负趋光性,而雌成虫对光照则不敏感.褐背小萤叶甲对植株不同部位的叶片嗜好性为:上部叶＞中部叶＞下部叶.Galerucella grisesceru mainly controlled the weeds by feeding on plant leaves and growing points. The 3^rd-instar larva fed most among the all stages. The adults could mate more than once and laid eggs discontinuously. The females preferred to lay eggs to the dorsal side of leaves. The 2^nd-instar and 3^rd-instar larvae preferred to feed dorsal side but no preference was found in adults feeding. Male adults, 2^nd-instar and 3^rd-instar larvae were all negatively phototaxic but the females were not sensitive to photo light. The preference of Galerucella grisescen to different host plant parts was upper leaves 〉 middle leaves 〉 underside leaves.

关 键 词：褐背小萤叶甲 行为习性 烟田 蓼科杂草 

分 类 号：Q968.1[生物学—昆虫学]