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中国生物防治学报 ›› 2026, Vol. 42 ›› Issue (5): 1064-1075.DOI: 10.16409/j.cnki.2095-039x.2026.01.043

• 研究论文 • 上一篇    下一篇

沈阳地区美国白蛾天敌蜘蛛种类与捕食能力

成怡然, 刘兆丰, 李治鑫, 刘绪丹, 赵力平, 孙守慧   

  1. 沈阳农业大学林学院, 沈阳 110866
  • 收稿日期:2025-10-22 出版日期:2026-10-08 发布日期:2026-10-21
  • 通讯作者: 博导,教授,E-mail:ssh1@syau.edu.cn。
  • 作者简介:成怡然,硕士研究生,E-mail:czlhcl@163.com
  • 基金资助:
    国家重点研发计划(2021YFD1400300)

Species and Predation Capacity of Natural Enemy Spiders of Hyphantria cunea in Shenyang

CHENG Yiran, LIU Zhaofeng, LI Zhixin, LIU Xudan, ZHAO Liping, SUN Shouhui   

  1. College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
  • Received:2025-10-22 Online:2026-10-08 Published:2026-10-21

摘要: 为明确沈阳地区美国白蛾Hyphantria cunea (Drury)天敌蜘蛛的资源现状与捕食能力,对美国白蛾的天敌蜘蛛类群进行了系统的野外种类和优势度调查,并观察其捕食行为,测定其捕食量和捕食功能反应。结果表明:新记录美国白蛾的天敌蜘蛛5种,包括杂黑斑园蛛Araneus variegatus Yaginuma、兴安园蛛Araneus khingan Zhou,Zhu&Zhang、黑革蟹蛛Coriarachne melancholica Simon、波纹花蟹蛛Xysticus croceusFox和卡氏金蝉蛛Phintella cavaleriei Schenkel;蜘蛛类的优势度指数(0.7461)明显高于昆虫天敌的优势度指数(0.2539),表明蜘蛛是沈阳地区美国白蛾的主要捕食性天敌类群,其中三突伊氏蛛Ebrechtella tricuspidata (Fabricius)的优势度指数(0.0694)和重要值(6.69%)均居首位;游猎型蜘蛛主要捕食美国白蛾低龄幼虫,结网型蜘蛛主要捕食其老熟幼虫及成虫,供试的7科16种不同属的蜘蛛的日平均捕食量差异显著; 10种不同属的游猎型蜘蛛对美国白蛾1、2龄幼虫的捕食功能反应均符合Holling Ⅱ型反应,其中鞍形花蟹蛛Xysticus ephippiatus Simon对美国白蛾1、2龄幼虫的理论日最大捕食量最高,分别为50.518头和10.726头,多数游猎型蜘蛛对美国白蛾1龄幼虫的瞬时攻击率更高、猎物处理时间更短、捕食效率更高,宜在美国白蛾发生早期释放此类蜘蛛。本文填补了美国白蛾蜘蛛类天敌资源与控害潜力研究的空白,三突伊氏蛛、鞍形花蟹蛛等种类具有较高的生物防治潜力,为本土天敌蜘蛛的开发与资源化利用提供了理论基础。

关键词: 蜘蛛, 美国白蛾, 捕食性天敌, 捕食功能反应

Abstract: This study aimed to clarify the resource status and predatory capacity of spider natural enemies of the fall webworm, Hyphantria cunea (Drury), in Shenyang. A systematic field investigation was carried out to determine the species composition and dominance of spider assemblages that serve as natural enemies of H. cunea. Additionally, laboratory-based observations of predatory behavior and functions were conducted. Five spider species were newly recorded as natural enemies of H. cunea in Shenyang: Araneus variegatus Yaginuma, A. khingan Zhou, Zhu & Zhang, Coriarachne melancholica Simon, Xysticus croceus Fox, and Phintella cavaleriei Schenkel. The dominance index of spiders (0.7461) was significantly higher than that of insect natural enemies (0.2539), demonstrating that spiders constitute the dominant predatory natural enemy assemblage of H. cunea in Shenyang. Among all collected spiders, Ebrechtella tricuspidata (Fabricius) ranked first, with a dominance index of 0.0694 and an importance value of 6.69%. Wandering spiders mainly prey on early-instar larvae of H. cunea, while web-building spiders primarily target late-instar larvae and adults of H. cunea. Significant differences in predation capacity were observed among 16 spider species belonging to 7 families and different genera. The predatory functional responses of 10 wandering spider species (representing different genera) to the 1st- and 2nd-instar larvae of H. cunea all fitted to the Holling Type Ⅱ model. Among them, X. ephippiatus Simon exhibited the highest theoretical maximum daily predation amount, with 50.518 the 1st-instar larvae and 10.726 the 2nd-instar larvae of H. cunea per day. Most wandering spiders demonstrated a higher instantaneous attack rate, shorter prey handling time, and higher predation efficiency towards the 1st-instar larvae of H. cunea, suggesting that it is advisable to release spiders during the early stages of H. cunea outbreak. This study fills the research gap concerning spider natural enemy resources and their pest suppression potential against H. cunea. Species such as Ebrechtella tricuspidata and Xysticus ephippiatus have prominent biological control potential. The results provide a theoretical basis for the exploitation and resource utilization of indigenous predatory spiders.

Key words: spider, Hyphantria cunea, predatory natural enemies, predatory functional response

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