云南松梢小蠹成虫前胃的超微形态与食性分化

生物学杂志

云南松梢小蠹成虫前胃的超微形态与食性分化

刘金林 , 赵宁 , 杨斌 , 李志美, 李宗波

1. 西南林业大学林学院云南省森林灾害预警与控制重点实验室，昆明 650224；2. 西南林业大学生命科学学院，昆明 650224

出版日期:2017-08-18 发布日期:2017-08-18
通讯作者: 李宗波，博士，副教授，主要从事化学生态学和害虫生态和治理，E-mail: lizb@outlook.com
作者简介:刘金林，硕士研究生，主要从事园林植物保护研究，E-mail: 3118366211@qq.com
基金资助:
国家自然科学基金(31560213, 31260179); 云南省应用基础研究(2011FZ139); 云南省森林灾害预警与控制重点实验室项目(ZK150006); 云南省高校科技创新团队项目

Proventriculus ultrastructure and feeding divisions of the adult of Yunnan shoot borers, Tomicus species, lived in Pinus yunnanensis

LIU Jin-lin , ZHAO Ning , YANG Bin , LI Zhi-mei , LI Zong-bo

1. Key Laboratory of Forest Disaster Warning and Control in Yunnan Province, College of Forestry;2. Faculty of Life Science, Southwest Forestry University, Kunming 650224, China

Online:2017-08-18 Published:2017-08-18

摘要/Abstract

摘要： 云南松梢小蠹是以危害云南松为特征的一类切梢小蠹，对4种成虫前胃进行了扫描电镜观察和形态对比。结果表明，云南松梢小蠹前胃由8块骨化的前胃板组成，膨大呈环形灯笼状；前胃板由板状部和片状部2部分构成，板状部无中线，具发达的橫齿线，上有形态多样的橫齿，片状部包括斜面、关闭刚毛和咀嚼刷。结合前胃板形态特征的聚类分析，发现前胃板的角质齿、关闭刚毛和副关闭刚毛是小蠹科昆虫食性分化的重要依据，而前胃板间中线处着生的棘状刚毛预示切梢小蠹存在生态位的微分化，可能对寄主树木营养物质需求和抗性能力有关。

关键词: 云南松, 切梢小蠹, 前胃板, 超微结构, 食性分化

Abstract: The Yunnan shoot borers, Tomicus species, are indigenous shoot-feeding beetles that attack the Pinus yunnanensis in southern China. To provide a generally concentration on the physiological aspects and feeding divisions, the proventriculus of 4 Tomicus species, including T. yunnanensis, T. minor, T. piniperda and T. brevioplius, were analyzed with scanning electron microscopy. The results showed the adult proventriculus consisted of 8 chitinous plates are in lantern-like shape. Each plate is involved in the anterior plate and masticatory plate. The former has no median suture on the surface plate, which presents many transverse tooth lines with all types of denticles; while the latter is composed of declivity, stopping bristles and mastiutory brush. Together evolutionary relationship of proventricular structure corroborate the cuticular denticles and stopping bristles as well as substitute stopping bristles that play a critical role in feeding divisions among the scolytidae. Particularly, the spine-like hairs occurred on the median suture may indicate the niche difference of coadaptation on Tomicus species. The results will benefit for the further understanding the nutrient utilization and resistance ability of Tomicus species to the host trees.

Key words: Pinus yunnanensis； Tomicus spp., proventriculus, ultrastructure, feeding divisions

刘金林, 赵宁,杨斌,李志美, 李宗波. 云南松梢小蠹成虫前胃的超微形态与食性分化[J]. 生物学杂志.

LIU Jin-lin,ZHAO Ning,YANG Bin,LI Zhi-mei,LI Zong-bo. Proventriculus ultrastructure and feeding divisions of the adult of Yunnan shoot borers, Tomicus species, lived in Pinus yunnanensis[J]. .