The damage status of L. invasa on different Eucalyptus varieties( clones) were surveyed in the field,and effects of Eucalyptus varieties on fitness,development and reproduction of this pest were studied in the study. ...The damage status of L. invasa on different Eucalyptus varieties( clones) were surveyed in the field,and effects of Eucalyptus varieties on fitness,development and reproduction of this pest were studied in the study. Results showed that:( 1) Most of the major Eucalyptus varieties( clones) could be attacked by L. invasa in Fujian Province,and galls formed on E. urophylla × E. camaldulensis DH201-2,E. gradis QG3,E. dunnii,E. urophylla cU6,E. grandis × E. urophylla GL9,E. robusta and E. exserta; L. invasa could develop and complete its life cycle on above varieties.( 2) The damage degree of different Eucalyptus varieties( clones) was different from fitness degree to L. invasa. L. invasa had different selection frequency,fecundity and number of larvae per gall on different Eucalyptus varieties( clones).( 3) In addition to little difference in female ratios,L. invasa feeding different Eucalyptus varieties( clones) had extremely significant differences in the indicators such as number of emerged L. invasa,body mass of female adult,fecundity,longevity,etc.( 4) According to the fitness index( FI),the host plants of L. invasa were divided into 4 types by cluster analysis: suitable host,moderately suitable host,less suitable host and unsuitable host; the fecundity of each female was more than 70 eggs in suitable host,which was adequate to lead to potential population outbreak of the pest. Host fitness index could be used as a comprehensive evaluation index for screening of resistant varieties( clones) in production.展开更多
桉树枝瘿姬小蜂（Leptocybe invasa Fisher et La Salle）是福建省新发现的外来入侵危险性害虫，为了为该虫的虫情监测和预测预报提供科学依据，采用室内恒温培养受害桉树的方法测得桉树枝瘿姬小蜂卵、幼虫、蛹、成虫和世代的发育起点...桉树枝瘿姬小蜂（Leptocybe invasa Fisher et La Salle）是福建省新发现的外来入侵危险性害虫，为了为该虫的虫情监测和预测预报提供科学依据，采用室内恒温培养受害桉树的方法测得桉树枝瘿姬小蜂卵、幼虫、蛹、成虫和世代的发育起点温度分别为8.6548、6.5695、13.9383、14.8303℃和10.1964℃，有效积温分别为101.7969、807.1576、105.4349、114.5262 d ＆#183;℃和1052.9662 d ＆#183;℃，各虫态及世代发育历期预测式为：卵， D＝101.7969/[ T -（8.6548＆#177;0.0099）] d；幼虫， D＝807.1576/[ T -（6.5695＆#177;0.1258）] d；蛹， D ＝105.4349/[ T -（13.9383＆#177;0.1028）] d；成虫， D ＝114.5262/[ T -（14.8303＆#177;0.1337）] d；世代， D＝1052.9662/[ T -（10.1964＆#177;0.0701）] d。结合福建省各县市区1970～2000年的气象资料进行统计和预测，结果表明福建各地的气温条件均适合桉树枝瘿姬小蜂的生长发育，且能满足桉树枝瘿姬小蜂年发生2～4个世代。展开更多
基金Supported by Key Project of Fujian Department of Science and Technology(2012N0008)Science and Technology Project of Fujian Department of Forestry(MLK[2005])
文摘The damage status of L. invasa on different Eucalyptus varieties( clones) were surveyed in the field,and effects of Eucalyptus varieties on fitness,development and reproduction of this pest were studied in the study. Results showed that:( 1) Most of the major Eucalyptus varieties( clones) could be attacked by L. invasa in Fujian Province,and galls formed on E. urophylla × E. camaldulensis DH201-2,E. gradis QG3,E. dunnii,E. urophylla cU6,E. grandis × E. urophylla GL9,E. robusta and E. exserta; L. invasa could develop and complete its life cycle on above varieties.( 2) The damage degree of different Eucalyptus varieties( clones) was different from fitness degree to L. invasa. L. invasa had different selection frequency,fecundity and number of larvae per gall on different Eucalyptus varieties( clones).( 3) In addition to little difference in female ratios,L. invasa feeding different Eucalyptus varieties( clones) had extremely significant differences in the indicators such as number of emerged L. invasa,body mass of female adult,fecundity,longevity,etc.( 4) According to the fitness index( FI),the host plants of L. invasa were divided into 4 types by cluster analysis: suitable host,moderately suitable host,less suitable host and unsuitable host; the fecundity of each female was more than 70 eggs in suitable host,which was adequate to lead to potential population outbreak of the pest. Host fitness index could be used as a comprehensive evaluation index for screening of resistant varieties( clones) in production.
文摘桉树枝瘿姬小蜂（Leptocybe invasa Fisher et La Salle）是福建省新发现的外来入侵危险性害虫，为了为该虫的虫情监测和预测预报提供科学依据，采用室内恒温培养受害桉树的方法测得桉树枝瘿姬小蜂卵、幼虫、蛹、成虫和世代的发育起点温度分别为8.6548、6.5695、13.9383、14.8303℃和10.1964℃，有效积温分别为101.7969、807.1576、105.4349、114.5262 d ＆#183;℃和1052.9662 d ＆#183;℃，各虫态及世代发育历期预测式为：卵， D＝101.7969/[ T -（8.6548＆#177;0.0099）] d；幼虫， D＝807.1576/[ T -（6.5695＆#177;0.1258）] d；蛹， D ＝105.4349/[ T -（13.9383＆#177;0.1028）] d；成虫， D ＝114.5262/[ T -（14.8303＆#177;0.1337）] d；世代， D＝1052.9662/[ T -（10.1964＆#177;0.0701）] d。结合福建省各县市区1970～2000年的气象资料进行统计和预测，结果表明福建各地的气温条件均适合桉树枝瘿姬小蜂的生长发育，且能满足桉树枝瘿姬小蜂年发生2～4个世代。
