椰心叶甲实验种群的生物学特性观察  

Life history of the laboratory population of the palm leaf beetle Brontispa longissima

作　　者：周荣[1,2] 曾玲[3] 梁广文[3] 陆永跃[3] 崔志新[1] 

机构地区：[1]佛山科学技术学院园艺系 [2]华南农业大学昆虫生态研究室广州510642 [3]华南农业大学昆虫生态研究室

出　　处：《昆虫知识》2004年第4期336-339,共4页Entomological Knowledge

基　　金：广东省植物检疫防疫项目"全省农业植物昆虫疫情监测与调查研究";"危险性有害生物褐纹甘蔗象和椰心叶甲疫情控制技术研究" ;深圳市农业局科技计划项目"椰心叶甲发生规律及综合防控技术研究"。

摘　　要：自然温度条件下 ,椰心叶甲Brontispalongissima (Gestro) 1年可发生 3代以上 ,世代重叠 ,主要以成虫越冬。成虫平均寿命 1 5 6d ,最长达 2 3 5d ,雌雄性比为 1∶1 ;雌雄虫一生均可交配多次。成虫产卵期长 ,产卵不规则 ,单雌平均产卵 1 1 9粒 ,最多可达 1 96粒。飞行磨测定的初步结果表明 ,雌虫飞行能力比雄虫强 ,2 4h未取食成虫最远飞行距离可达 40 0多m ;成虫和幼虫均具有负趋光性、假死性。成虫 3～ 5d不取食、高龄幼虫 7d不取食仍存活。幼虫经历 4～ 5龄 ,在温度或寄主不适宜条件下 ,可进入 6～ 7龄 ,或提前化蛹 ,从卵到成虫羽化大约需 3 6～ 61d。The average life longevity of palm leaf beetle Brontispa longissima was 165 days, with the maximum of 235 days. The sex ratio of adults was 1∶1. The male and female could mated for several times. The egg\|larval period was long and the eggs were laid irregularly. The average number of eggs laid by one female was 119, with the maximum of 196.The primary results measured by flight implement showed that the flight ability of female was stronger than that of male, the flight distance of adult without food for 24 h was 469 m. Larvae and adults of B. longissima had the negative phototropism and thanatosis habit. The adults and old larvae could survive 3～5 days and 6～7 days respectively without food. Usually there were 4～5 instars in the larval stage, but when temperature or host plants were improper there were 6～7 instars, or the larvae pupated in advance. The life span was about 36～61 days.

关 键 词：椰心叶甲 种群 生物学特性 温度 生活习性 鞘翅目 铁甲科 

分 类 号：S433[农业科学—农业昆虫与害虫防治]