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Lethal Male Combat of Anastatus japonicus (Hymenoptera: Eupelmidae), an Egg Parasitoid of Lepidopterous and Hemipterous Pests

文献类型： 外文期刊

作者： Ali, Muhammad Yasir 1 ; Avila, Gonzalo A. 3 ; Luo, Zheng-Yu 1 ; Hassan, Muhammad Asghar 4 ; Khan, Khalid Ali 5 ; Zhang, Jin-Ping 1 ; Zhang, Feng 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, MARA CABI Joint Lab Biosafety, Beijing 100193, Peoples R China

2.Ctr Agr & Biosci Int CABI, Beijing 100081, Peoples R China

3.New Zealand Inst Plant & Food Res Ltd, Auckland Mail Ctr, Auckland 1025, New Zealand

4.Guizhou Univ, Inst Entomol, Prov Special Key Lab Dev & Utilizat Insect Resourc, Guiyang 550025, Peoples R China

5.King Khalid Univ, Ctr Bee Res & its Prod CBRP, POB 9004, Abha 61413, Saudi Arabia

6.King Khalid Univ, Res Ctr Adv Mat Sci RCAMS, POB 9004, Abha 61413, Saudi Arabia

7.King Khalid Univ, Appl Coll, POB 9004, Abha 61413, Saudi Arabia

关键词： male parasitoid; aggression; body size; local mate competition; food; male relatedness

期刊名称：INSECTS （ 影响因子：2.9； 五年影响因子：3.3 ）

ISSN：

年卷期： 2025 年 16 卷 1 期

页码：

收录情况： SCI

摘要： Aggressive interactions between males are common when victors gain increased mating success but can result in severe injury or death for the defeated. Anastatus japonicus (Hymenoptera: Eupelmidae) is a solitary egg parasitoid of hemipteran and lepidopteran species. Here, we investigated lethal interactions between A. japonicus males and analyzed aggression behavior scaled with the male condition, number of competitors, number of presented females, and female mating status. The intensity of A. japonicus male aggressiveness increased with the number of competitors and the number of presented females but was not affected by male relatedness. The intensity and frequency of A. japonicus male aggressive interactions were greater when males competed for virgin females compared to mated females. Larger A. japonicus males won more contests than smaller males and honey-fed males defeated starved ones, where defeated males suffered the loss of appendages and/or died. Fighting appeared to be the norm in all-male groupings, regardless of the presence of females. A number of biological and ecological factors are deducted that likely contribute to the evolution of male aggressive behavior in A. japonicus.

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