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同域分布的4种竹笋夜蛾产卵选择行为

张琴1,黄继育2,舒金平1**,陈文强3,王浩杰1,吴鸿1   

  1. 1 中国林业科学研究院亚热带林业研究所, 浙江富阳 311400;  2安吉县林业局, 浙江湖州 313300;  3 德清县武康镇农业公共服务中心, 浙江德清 313299)
  • 出版日期:2015-10-10 发布日期:2015-10-10

Oviposition selection behavior of four sympatric shootboring noctuids.

ZHANG Qin1, HUANG Ji-yu2, SHU Jin-ping1**, CHEN Wen-qiang3, WANG Hao-jie1, WU Hong1   

  1. (1Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China; 2Anji Bureau of Forestry, Huzhou 313300, Zhejing, China;3 Agricultural Public Service Center of Wukang, Deqing 313299, Zhejiang, China)
  • Online:2015-10-10 Published:2015-10-10

摘要: 竹笋夜蛾是中国南方地区最为重要的笋期害虫。为探究同域分布、寄主相同的4种竹笋夜蛾生态位的分化机制,于室内研究了4种竹笋夜蛾对3种不同寄主植物水竹(Phyllostachys heteroclada Oliver)、鹅观草(Roegneria kamoji Ohwi)和青绿苔草(Carex breviculmis R. Br.)的产卵选择行为。结果表明:4种竹笋夜蛾在3种寄主植物间的产卵选择性差异显著(P<0.01),其中笋秀夜蛾和竹笋禾夜蛾只选择鹅观草进行产卵;4种竹笋夜蛾在各寄主植物产卵位置上具有选择性,偏好在鹅观草叶片、叶鞘上及草根处产卵;4种竹笋夜蛾在产卵总量上差异显著(P<0.01),其中笋秀夜蛾和竹笋禾夜蛾产卵总量最大;4种竹笋夜蛾产卵时间先后依次为基夜蛾>萨夜蛾>笋秀夜蛾>竹笋禾夜蛾,基夜蛾最早羽化产卵,产卵历期10 d,后三者产卵历期重叠。该结果说明,4种夜蛾采用时间隔离和空间隔离2种机制,从行为上避免激烈的种间竞争,保证自身后代的顺利繁衍。

关键词: 有机肥, 小麦, 耕层结构, 通径分析, 冠层结构

Abstract:

To explore the sympatric speciation of four dominant shootboring noctuids, Sapporia repetita, Oligia vulgaris, Apamea apameoides and Kumasia kumaso, the oviposition behaviors of the four hootboring noctuids were observed in lab conditions using Phyllostachys heteroclada, Roegneria kamoji and Carex breviculmis as host plants. The results showed that the host preference in oviposition was significantly different among the four hootboring noctuids (P<0.01). A. apameoides and O. vulgaris only choose R. kamoji to lay eggs. All four noctuids selected their oviposition sites on different parts of the same plant, with most sites on the leaf surface, sheath and root of R. kamoji. A. apameoides and O. vulgaris spawned more eggs than the other two noctuids. Meanwhile, the oviposition time of the four noctuids was different. Kumasia kumaso was the ovipositionearliest moth and its spawning process lasted for 10 days. The oviposition time for the other three species was in sequence of S. repetita > O. vulgaris > A. apameoides. The results indicated that the four shootboring noctuids used temporal and spatial isolation mechanisms to avoid fierce interspecific competition for the development of their offsprings.
 

Key words: wheat, organic fertilizer, path analysis., canopy structure, tillage structure