摘要
于2002-2004年在厦门同安设立试验点对松墨天牛进行饲养及观察。结果表明,松墨天牛在厦门以2 a发生3代为主,少数1 a发生2代,世代重叠现象明显,几乎全年可见幼虫,以3-5龄幼虫在蛀道内越冬或以低龄幼虫在韧皮部越冬。2 a发生3代的松墨天牛有3个羽化高峰,1 a发生2代的有2个高峰期,二者的第1个羽化盛期在4月相叠加,所以4月份的成虫数量最多,占全年羽化成虫总数的31%,此后一直到8月下旬,都有较多的成虫羽化。
In order to find out the life history of Monochamus alternatus Hope in South Fujian, raising and investigation were conducted during 2002 - 2004 in Tong＇ an, Xiamen. The results showed that there were mainly 3 generations per 2 years in Xiamen. The overlap of generations was obviously, and overwinter as 3 -5 instar larvae in boring tunnel or as low instar larvae in the xylem of stems. The imago had long life with emerging frorfi February to October. The imagoes of 3 generations per 2 years had three peak emergence and the imagoes of 2 generations one year had two peak emergence, and both of them superimposed in April, so there were most imagoes in April which accounted for 31% of total imagoes in the year, and then there would be more imagoes until the last ten-day of August.
出处
《华东昆虫学报》
2005年第2期118-121,共4页
Entomological Journal of East China
基金
福建省重大科技项目(2000-Z-028)。
关键词
松墨天牛
生活史
厦门
Monochamus alternatus
life history
Xiamen
