昆虫学报 ›› 2022, Vol. 65 ›› Issue (9): 1185-1195.doi: 10.16380/j.kcxb.2022.09.012

• 研究论文 • 上一篇    下一篇

独栖蜂黄缘蜾蠃的产卵行为及其与寄生胁迫的关系

林木青1,2, 刘益帆1,3, 吴琛帆1,2, 束祖飞4, 朱朝东1,2,5, 肖治术1,2,*   

  1. (1. 中国科学院动物研究所, 农业虫害鼠害综合治理研究国家重点实验室, 北京 100101; 2. 中国科学院大学生命科学学院, 北京 100049; 3. 河北大学生命科学学院, 河北保定 071002; 4. 广东车八岭国家级自然保护区管理局, 广东韶关 512500; 5. 中国科学院动物研究所动物进化与系统学(院)重点实验室, 北京 100101)
  • 出版日期:2022-09-20 发布日期:2022-10-16

Oviposition behavior of the solitary wasp Anterhynchium flavomarginatum (Hymenoptera: Eumeninae) in relation to parasitism pressure

LIN Mu-Qing1,2, LIU Yi-Fan1,3, WU Chen-Fan1,2, SHU Zu-Fei4, ZHU Chao-Dong1,2,5, XIAO Zhi-Shu1,2,*   

  1. (1. State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; 2. College of Biological Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; 3. College of Life Sciences, Hebei University, Baoding, Hebei 071002, China; 4. Guangdong Chebaling National Nature Reserve Administration Bureau, Shaoguan, Guangdong 512500, China; 5. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China)
  • Online:2022-09-20 Published:2022-10-16

摘要: 【目的】独栖蜂黄缘蜾蠃Anterhynchium flavomarginatum是农林业害虫的重要天敌之一。本研究旨在明确黄缘蜾蠃的产卵策略及其对寄生胁迫的行为响应,为农林业害虫生物防治提供基础依据。【方法】2018-2020年,在广东车八岭国家级自然保护区及周边区域使用根据公里网格方案(共计100个调查网格,网格大小为1 km2)设置的人工巢管调查了黄缘蜾蠃的产卵策略及其与寄生胁迫之间的关系。通过连续采集该蜂的筑巢巢管并饲养调查,我们详细记录了每根巢管的孵育室数量及其子代在巢管里的性比和被寄生情况,并测量了每根巢管的长度、内径和巢室结构特征。【结果】2018-2020年中,我们获得了黄缘蜾蠃筑巢的巢管达3 733根和孵育室9 269个,其中被寄生的孵育室达1 420个。黄缘蜾蠃在单根巢管内平均产2.50±1.25枚卵,构建非孵育室1.84±1.14个,其子代性比偏雄(雄∶雌=1.98∶1),并倾向于在巢管内端的孵育室产雌性卵,在外端的孵育室产雄性卵。结构方程模型分析结果显示,每根巢管的巢管内径和长度均显著地正影响孵育室数量,巢管长度也显著地正影响非孵育室数量,而孵育室数量和非孵育室数量均显著地负影响被寄生率。对子代在巢管内的性别排列模式进行meta分析表明,巢管最内端子代雌性数量显著高于最外端的,而巢管最内端孵育室的被寄生率显著低于最外端的。【结论】结果表明黄缘蜾蠃在寄生胁迫下通过在巢管内多产卵以降低被寄生风险,并可通过调节子代的性别分配模式以提高雌性子代的存活率,从而有助于提高其繁殖适合度。

关键词: 独栖蜂, 黄缘蜾蠃, 巢管, 产卵策略, 巢室结构, 寄生胁迫

Abstract: 【Aim】 The solitary wasp, Anterhynchium flavomarginatum is one of the most important natural enemies for the control of agricultural and forestry pests. This study aims to investigate the oviposition strategy and behavioral responses of A. flavomarginatum to parasitism pressure, so as to provide a basis for the biological control of agricultural and forestry pests. 【Methods】 During the three years (2018-2020), the oviposition strategy of A. flavomarginatum and its relationships with parasite pressures were investigated by using artificial trap-nests set according to kilometer-grid protocol (N=100 1-km2 grids) in the Chebaling National Nature Reserve and its surrounding areas, Guangdong Province. The number of brood cells, sex ratio and parasitism in each trap-nest were recorded, and the length, innerdiameter, and architecture of each trap-nest were measured as well. 【Results】 During 2018-2020, we obtained 3 733 trap-nests and 9 269 brood cells with up to 1 420 brood cells parasitized. A. flavomarginatum laid an average of 2.50±1.25 eggs and constructed 1.84±1.14 non-brood cells per trap-nest with a male-biased sex ratio (male∶female=1.98∶1). For each nest-trap, offspring females tend to be laid in inner brood cells, while offspring males tend to be laid in outer brood cells. Structural equation model showed that both the inner diameter and the length of trap-nest positively affected the number of brood cells per trap-nest. The length of trap-nest also significantly positively affected the number of non-brood cells per trap-nest. However, both the number of brood cells and non-brood cells had a significantly negative influence on the parasitism rate. Meta-analysis of the sex arrangement pattern of offspring showed that number of offspring females in the innermost part of trap-nest was significantly higher than that in the outermost part, while the parasitism rate in the innermost part of trap-nest was significantly lower than that in the outermost part. 【Conclusion】 Our results provide sound evidence that oviposition strategy by A. flavomarginatum can help to improve its reproductive fitness, since this species tends to lay more eggs in trap-nests to reduce the parasitism risk and to improve the survival of offspring females by adjusting the sex allocation pattern of offspring within each trap-nest.

Key words: Solitary wasp; Anterhynchium flavomarginatum, trap-nests, oviposition strategy; nesting architecture, parasite pressure