中国农业科学 ›› 2024, Vol. 57 ›› Issue (5): 909-918.doi: 10.3864/j.issn.0578-1752.2024.05.007

• 植物保护 • 上一篇    下一篇

山大齿猛蚁和日本弓背蚁对小地老虎的捕食行为

高冬梅(), 皇甫佳一, 郭萧()   

  1. 重庆市农业科学院农业工程研究所,重庆 401329
  • 收稿日期:2023-10-25 接受日期:2023-11-21 出版日期:2024-03-01 发布日期:2024-03-06
  • 通信作者:
    郭萧,E-mail:
  • 联系方式: 高冬梅,E-mail:283532286@qq.com。
  • 基金资助:
    重庆市市级财政科研项目(cqaas2023sjczqn024); 重庆市市级财政科研项目(cqaas2023sjczzd001); 重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1197); 重庆市科研机构绩效激励引导专项(cstc2021jxjl80022); 重庆市农业科学院绩效激励引导专项(cqaas2022jxjl007)

The Predation Behavior of Odontomachus monticola and Camponotus japonicus on Black Cutworm (Agrotis ipsilon)

GAO DongMei(), HUANGFU JiaYi, GUO Xiao()   

  1. Institute of Agricultural Engineering, Chongqing Academy of Agricultural Sciences, Chongqing 401329
  • Received:2023-10-25 Accepted:2023-11-21 Published:2024-03-01 Online:2024-03-06

摘要:

【目的】小地老虎(Agrotis ipsilon)是粮食和经济作物的重要地下害虫之一。论文旨在明确山大齿猛蚁(Odontomachus monticola)和日本弓背蚁(Camponotus japonicus)对小地老虎的捕食特性,丰富小地老虎生物防治技术手段,降低小地老虎防治成本与化学农药用量。【方法】在猎物被土壤覆盖和裸露两种自然条件下,观察并统计山大齿猛蚁和日本弓背蚁在1、6、12、24和48 h内对不同虫态小地老虎的捕食选择性、捕食方式以及捕食致死率;在室内,利用两种蚂蚁的试验种群开展捕食行为序列特征研究。通过统计分析,明确两种蚂蚁捕食行为差异及控害特点。【结果】日本弓背蚁对小地老虎卵的致死率较低,48 h累计致死率仅为12.67%;山大齿猛蚁不取食小地老虎卵。两种蚂蚁对小地老虎幼虫和蛹的控制效果超过49%,最高达98.67%,且控制效果随小地老虎龄期增长而降低。山大齿猛蚁和日本弓背蚁捕食行为序列存在一定差异:两种蚂蚁对小地老虎低龄幼虫均以直接搬运为主;对体型较大的小地老虎高龄幼虫,日本弓背蚁具有试探、攻击、召唤同伴、猎物切割、群体搬运等行为,呈现出明显的群体性行为;而山大齿猛蚁对大型猎物的捕食行为较为单一,未观察到召唤同伴、群体搬运等行为,群体捕食行为不明显。两种蚂蚁对小地老虎捕食行为的差异也体现在捕食方式和对小地老虎的致死率方面:日本弓背蚁对小地老虎低龄幼虫多直接搬运回巢,捕食效率极高,对小地老虎高龄幼虫多以集体捕猎;山大齿猛蚁捕猎小地老虎高龄幼虫时丢弃比例较高,但因叮咬蜇刺,逃脱捕猎的小地老虎幼虫死亡率较高。此外,土壤覆盖极大地影响蚂蚁对小地老虎幼虫的发现,山大齿猛蚁和日本弓背蚁仅能发现地表猎物,不具备探测地下猎物的能力。【结论】日本弓背蚁和山大齿猛蚁对小地老虎幼虫和蛹均有较好的控制作用,小地老虎虫龄越低控制效果越好,两种蚂蚁对小地老虎高龄幼虫捕食行为存在一定差异,但不影响对小地老虎的控制效果。

关键词: 蚂蚁, 地下害虫, 小地老虎, 致死率, 捕食行为序列, 天敌昆虫

Abstract:

【Objective】Black cutworm (Agrotis ipsilon) is one of the important underground pests of food and cash crops. The objective of this study is to clarify the predation characteristics of Odontomachus monticola and Camponotus japonicus on A. ipsilon, enrich the biological control techniques of A. ipsilon, and to reduce the cost of A. ipsilon control and the amount of chemical pesticides.【Method】Predation selectivity, predation mode, predation lethality on different A. ipsilon stages by O. monticola and C. japonicus were observed and counted under two natural conditions, soil cover and bare prey, for 1, 6, 12, 24 and 48 h. Sequence characteristics of predation behavior were carried out indoors using experimental populations of the two ant species. Statistical analyses were performed to clarify the differences in predation behavior and pest control characteristics of the two ant species.【Result】C. japonicus was less lethal to A. ipsilon eggs, and the cumulative 48 h lethality was only 12.67%. O. monticola did not feed on A. ipsilon eggs. The control effect of the two ant species on A. ipsilon larvae and pupae was over 49% and up to 98.67%, and the control effect decreased with the age of A. ipsilon. There were some differences in the sequence characteristics of predation behavior of O. monticola and C. japonicus: for A. ipsilon low instar larvae, both ants mainly carried directly; for the larger A. ipsilon elder instar larvae, C. japonicus had behaviors of probing, attacking, calling companions, cutting prey and carrying in groups, which showed obvious group behavior. On the other hand, the predation behavior of O. monticola on large prey was simple, and behaviors such as calling companions and group handling were not observed, the group predation behavior was not obvious. The differences in the predation behavior of the two ant species on A. ipsilon were also reflected in the mode of predation and lethality on A. ipsilon: Most of the low instar A. ipsilon larvae were carried directly by C. japonicus, the predation efficiency was very high, and C. japonicas usually preyed A. ipsilon elder instar larvae in groups. O. monticola had a higher proportion of discarded elder A. ipsilon larvae, but A. ipsilon larvae that escaped predation by biting and stinging had a higher mortality. In addition, soil cover strongly influenced the detection of A. ipsilon larvae by ants, the two ant species could only detect surface prey and not subterranean prey.【Conclusion】C. japonicus and O. monticola have better control effect on both A. ipsilon larvae and pupae, and the lower the age of A. ipsilon, the better the control effect. There are some differences in the predation behavior of the two ant species on the elder A. ipsilon larvae, but it does not affect the control effect on A. ipsilon.

Key words: ant, underground pest, black cutworm (Agrotis ipsilon), lethality, sequence of predation behavior, predator insect