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花绒寄甲松褐天牛生物型人工繁育替代寄主的筛选研究

高悦, 解春霞, 刘云鹏, 郑华英   

  1. 江苏省林业科学研究院, 南京 211153
  • 收稿日期:2014-04-04 修回日期:1900-01-01 出版日期:2015-04-08 发布日期:2015-04-08
  • 通讯作者: 高悦

Selectivity and Fitness of Dastarcus helophoroides Fairmaire on Differernt Hosts Pupae

GAO Yue, XIE Chunxia, LIU Yunpeng, ZHENG Huaying   

  1. Forestry Academy of Jiangsu Province, Nanjing 211153, China
  • Received:2014-04-04 Revised:1900-01-01 Online:2015-04-08 Published:2015-04-08

摘要: 为探讨花绒寄甲替代寄主及对寄主搜寻行为的特点,在实验室内采用选择性和非选择性方法,对花绒寄甲松褐天牛生物型幼虫寄生不同寄主蛹的选择性、搜索行为和寄生能力进行了研究.结果表明,在非选择性试验中花绒寄甲幼虫可以寄生松褐天牛、青杨天牛、大麦虫和黄粉甲,寄生率分别为86.44%、76.32%、88.49%、2.65%,羽化率分别为93.80%、90.17%、97.42%、56.75%,但不寄生柞蚕蛹;人为设置的物理障碍不影响花绒寄甲幼虫对寄主的搜寻寄生;当不同寄主同时存在时,花绒寄甲对寄主的嗜好存在显著差异,嗜好程度依次为松褐天牛> 大麦虫> 青杨天牛> 黄粉甲.

Abstract: Suitability of different hosts' pupae to parasitization by Dastarcus helophoroides were observed under no choice and choice situations in the laboratory. No choice experiments showed that D. helophoroides could parasitize and emerge from pupae of Monochamus alternatus, Saperda populnea, Zophobas morio and Tenebrio molitor,with parasitism rates of 86.44%、76.32%、88.49% and 2.65%, respectively, and emergence rates of 93.80%, 90.17%, 97.42% and 56.75%, respectively. However, it could not parasitize pupae of Antheraea pernyi. The searching and parasitism of hosts by D. helophoroides were not influenced by physical barriers. In choice experiments, D. helophoroides showed preference for hosts: Monochamus alternatus> Saperda populnea> Zophobas morio >Tenebrio molitor.

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