Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (12): 2116-2123.DOI: 10.1016/S1671-2927(00)8750

• 论文 • 上一篇    

TheAbundance andPopulationDynamics of Leptocybe invasa (Hymenoptera: Eulophidae) Galls on Eucalyptus spp. in China

 ZHU Fang-li, REN Shun-xiang, QIU Bao-li, HUANG Zhen , PENG Zheng-qiang   

  1. 1.Engineering Research Center of Biological Control, Ministry of Education/Department of Entomology, South China Agricultural University,Guangzhou 510640, P.R.China
    2.Institute of Plant and Environment Protection, Chinese Academy of Tropical Agricultural Science, Danzhou 571737, P.R.China
  • 收稿日期:2011-11-09 出版日期:2012-12-01 发布日期:2012-12-18
  • 通讯作者: Correspondence REN Shun-xiang, Tel: +86-20-85793408, Fax: +86-20-85280292, E-mail:rensxcn@yahoo.com.cn
  • 作者简介:ZHU Fang-li, Tel: +86-519-86631064, E-mail: zfl840103@yahoo.com.cn
  • 基金资助:

    This research was supported by the Forest Special Fund of Guangdong Province for Technological Innovation Project, China (2010KJCX015-01).

TheAbundance andPopulationDynamics of Leptocybe invasa (Hymenoptera: Eulophidae) Galls on Eucalyptus spp. in China

 ZHU Fang-li, REN Shun-xiang, QIU Bao-li, HUANG Zhen , PENG Zheng-qiang   

  1. 1.Engineering Research Center of Biological Control, Ministry of Education/Department of Entomology, South China Agricultural University,Guangzhou 510640, P.R.China
    2.Institute of Plant and Environment Protection, Chinese Academy of Tropical Agricultural Science, Danzhou 571737, P.R.China
  • Received:2011-11-09 Online:2012-12-01 Published:2012-12-18
  • Contact: Correspondence REN Shun-xiang, Tel: +86-20-85793408, Fax: +86-20-85280292, E-mail:rensxcn@yahoo.com.cn
  • About author:ZHU Fang-li, Tel: +86-519-86631064, E-mail: zfl840103@yahoo.com.cn
  • Supported by:

    This research was supported by the Forest Special Fund of Guangdong Province for Technological Innovation Project, China (2010KJCX015-01).

摘要: The blue gum chalcid, Leptocybe invasa Fisher & La Salle, invaded China in 2007 and has subsequently caused substantial damage to eucalyptus trees. In the current paper, we investigated the susceptibility of 10 Eucalyptus spp. and Eucahetus dunnii to L. invasa in the field, determined the density of galls as well as the gall volume on these tree species, and monitored the population dynamics of wasps in Hainan and Guangdong provinces of China. The order of susceptibility to L. invasa was Eucalyptus urophylla×Eucalyptus camaldulensis>E. urophylla (coppices)>Eucalyptus exserta> Eucalyptus grandis×E. urophylla in Hainan, and Eucalyptus propinqua>Eucalyptus saligna>E. exserta>Eucalyptus microcorys>Eucahetus dunnii>E. camaldulensis>Eucalyptus tereticornis>Eucalyptus robust in Guangdong, China. Although L. invasa generally damages the midribs and petioles of young leaves and the tender bark of twigs of eucalyptus, galls were not observed on leaves of E. microcorys, E. camaldulensis, or E. dunnii. Gall volume significantly differed among the tree species, and gall volume and wasp number were positively correlated. In Dongfang, Hainan Province, the overwintering period of L. invasa emergencing through the year was from the end of December to March of the next year, and the number of population was the greatest on E. urophylla×E. camaldulensis, and the smallest on E. grandis×E. urophylla. In Guangzhou, Guangdong Province, L. invasa hardly emerged in winter from December to June of the next year, and the population was the greatest on E. propinqua, and the smallest on E. microcorys.

关键词: Leptocybe invasa , Eucalyptus , susceptibility , gall volume , population dynamics

Abstract: The blue gum chalcid, Leptocybe invasa Fisher & La Salle, invaded China in 2007 and has subsequently caused substantial damage to eucalyptus trees. In the current paper, we investigated the susceptibility of 10 Eucalyptus spp. and Eucahetus dunnii to L. invasa in the field, determined the density of galls as well as the gall volume on these tree species, and monitored the population dynamics of wasps in Hainan and Guangdong provinces of China. The order of susceptibility to L. invasa was Eucalyptus urophylla×Eucalyptus camaldulensis>E. urophylla (coppices)>Eucalyptus exserta> Eucalyptus grandis×E. urophylla in Hainan, and Eucalyptus propinqua>Eucalyptus saligna>E. exserta>Eucalyptus microcorys>Eucahetus dunnii>E. camaldulensis>Eucalyptus tereticornis>Eucalyptus robust in Guangdong, China. Although L. invasa generally damages the midribs and petioles of young leaves and the tender bark of twigs of eucalyptus, galls were not observed on leaves of E. microcorys, E. camaldulensis, or E. dunnii. Gall volume significantly differed among the tree species, and gall volume and wasp number were positively correlated. In Dongfang, Hainan Province, the overwintering period of L. invasa emergencing through the year was from the end of December to March of the next year, and the number of population was the greatest on E. urophylla×E. camaldulensis, and the smallest on E. grandis×E. urophylla. In Guangzhou, Guangdong Province, L. invasa hardly emerged in winter from December to June of the next year, and the population was the greatest on E. propinqua, and the smallest on E. microcorys.

Key words: Leptocybe invasa , Eucalyptus , susceptibility , gall volume , population dynamics