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Study on Biological Characteristics of Eulecanium gigantean(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2012年09期
Page:
151-153
Research Field:
Publishing date:

Info

Title:
Study on Biological Characteristics of Eulecanium gigantean
Author(s):
CHEN A-lan; GOU Ri-cuo
College of Agriculture and Animal Husbandry,Qinghai University,Xining,Qinghai 810016
Keywords:
Eulecanium gigantean; bionomics; threshold temperature of eggs; effective accumulated temperature
PACS:
S 763.49
DOI:
-
Abstract:
Harm of Eulecanium gigantean on elm and the biological characteristics in 2010~2011 in Xining were surveyed，development starting point temperature and effective accumulative temperature were determined under indoors natural variable temperature conditions.The results showed that Eulecanium gigantean occurs two generations per year in Xining.Its second instar nymphs overwinter gathered on branches of elms.The overwintering nymphs begins to damage by feeding in the mid April of next year.The 2nd instar nymphs developed into female adults in early May.The first generation female adults started to lay eggs in late May.The fecundity was from 586 to 1 100 eggs per female with the average of 827 eggs.Eggs begin to hatch in the mid June，the egg stage was 30 days and the hatching rates of egg was 100%.The nymphs damage mainly in late June to August.The second generation female adults started to lay eggs in the mid September.The fecundity was from 250 to 620 eggs per female with the average of 473 eggs.The second generation of nymphs damage from October to early November.The developmental threshold temperature and effective accumulated temperature for egg were determined under natural temperature in lab.The results showed that the threshold temperature was 7.39℃ and the effective accumulated temperature was 266.53 degree-day.The predicting equation for the rate of development was N=(266.53±23.24)/T-(7.39±0.87).

References:

[1]王子清.中国动物志.昆虫纲同翅目蚧总科[M].22卷.北京:科学出版社,2001:370-371.
[2]于春梅,朱林科.西宁市园林植物蚧壳虫的种类及危害特点[J].陕西林业科技，2005(3):34-35.
[3]张秀珍.瘤坚大球蚧生物学特性及防治技术研究[J].山西林业科技，2004(1):35-36.
[4]刘贵峰,刘玉平.国槐蚧虫种类鉴定、危害及防治的研究[J].内蒙古民族大学学报(自然科学版),2004,19(1):54-57.
[5]刘小利.青海省东部林果木介壳虫种类调查(三)[J].青海农林科技,1996(3):26-33.
[6]张孝羲,程遐年,耿济国.害虫测报原理和方法[M].北京:农业出版社,1979:223-229.
[7]陈阿兰,李宁,郭新颖,等.黄杨绒蚧的生物学特性及卵期预测预报[J].昆虫知识,2009,46(5):723-727.

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Last Update: 2014-09-03