摘要
观察了重阳木帆锦斑蛾各虫态的形态特征、生活史及生物学特性，并监测其种群动态。结果表明：室内常温条件下，1～6龄幼虫发育历期分别为3、2、3、4、5、5d；该虫在上海1年发生4代，以老熟幼虫在建筑物角落和植株枯枝落叶等处结茧越冬；越冬幼虫翌年3月底化蛹，5月上旬第1代幼虫开始为害。2011年种群消长调查发现，5月中旬至5月下旬为第1代幼虫发生高峰期，虫口密度为18．7头／百叶；6月底至7月中旬为第2代幼虫发生高峰期，虫口密度为58．8头／百叶；8月初至8月中旬为第3代幼虫发生高峰期，虫口密度为、43．6头／百叶；9月下旬至10月中旬为第4代幼虫发生高峰期，虫口密度为5．8头／百叶。
Histia rhodope is a major insect pest defoliating Bischofia javanica and its damage effect is increasingly heavy in Shanghai area in recent years. Observation and monitoring of its morphologi- cal characters,life history and biological characters as well as its population dynamics showed that un- der the indoor normal temperature conditions the development periods of its 1^st - 6＇h-stadium larvae are 3,2,3,4,5 and 5 d respectively;It occurs 4 generations a year in Shanghai and overwinters via co- cooning in building corners and in withered branches and leaves; The overwintered larvae pupate at the end of next March and the 1st generation larvae do the harm in early May. The population survey in 2011 found that the peak period of the 1st generation larvae is in the last 20 days of May and the population density is 18.7 heads/100 leaves;The peak period of the 2nd generation larvae is between the end of June and the mid July and the population density is 58.8 heads/100 leaves;The peak period of the 3rd generation larvae is in the first 20 days of August and the population density is 43.6 heads/ 100 leaves;The peak period of the 4th generation larvae is between the late September and the mid October and the population density is 5.8 heads/100 leaves.
出处
《上海农业学报》
CSCD
北大核心
2013年第5期122-124,共3页
Acta Agriculturae Shanghai
基金
上海市科技兴农重点攻关项目[沪农科攻字(2012)第2-3号]
上海市绿化和市容管理局攻关项目(G092401
G102403)资助
关键词
重阳木帆锦斑蛾
形态特征
生活史
生物学特性
种群动态
Histia rhodope
Morphological character
Life cycle
Biological character
Populationdynamics
