首页分享白蛾黑棒啮小蜂的繁育生物学特性

白蛾黑棒啮小蜂的繁育生物学特性

来源：花匠小妙招时间：2026-02-27 19:35

摘要： 白蛾黑棒啮小蜂Tetrastichus septentrionalis是美国白蛾Hyphantria cunea的重要寄生性天敌之一，具有重要应用前景。以黄粉甲Tenebrio molitor蛹为替代寄主繁育白蛾黑棒啮小蜂，研究其寄生行为及生物学特性，可为白蛾黑棒啮小蜂大规模繁育应用于美国白蛾生物防治提供参考。研究表明，白蛾黑棒啮小蜂的交配行为可分为交配前期、交配中期和交配后期3个阶段，寄生行为分为搜寻、刺探、产卵和产卵后梳理4个阶段；胚胎发育期可分为胚胎发育早期、胚胎伸长及器官形成期和胚胎成熟期；胚后发育包括幼虫期、蛹期和成虫期；刚羽化的雌蜂卵巢内不含有成熟卵粒，成熟卵出现于羽化24 h后。在18℃、21℃、24℃、27℃和30℃五个温度梯度条件下测定白蛾黑棒啮小蜂全世代发育历期达59.35 d、31.20 d、22.85 d、18.45 d和13.90 d，其发育起点温度和有效积温分别为14.15℃和225.06 d·℃。

关键词: 白蛾黑棒啮小蜂, 美国白蛾, 个体发育, 有效积温

Abstract: Tetrastichus septentrionalis is one of important parasitic natural enemies of Hyphantria cunea, showing wide application potential in biological control. The parasitic behavior and biological characteristics of T. septentrionalis were studied, which could provide a reference for its large-scale breeding with Tenebrio molitor pupa as an alternative host for control of Hyphantria cunea. The results showed that the whole mating behaviors of the wasp consisted of three phases: pre-copulating, mid-copulating and post-copulating. Parasitic behavior was divided into four phases: searching, probing, oviposition, and combing after oviposition. The embryonic development could be divided into early embryo development, period of embryo elongation and organogenesis, and period of embryo maturation. Post-embryonic development included the larval stage, pupal stage and adult stage. There were no mature eggs in the ovaries of newly emerged females, and mature eggs appeared after 24 h of emergence. The whole generation durations of T. septentrionalis were 59.35 d, 31.20 d, 22.85 d, 18.45 d, and 13.90 d at 18 ℃, 21 ℃, 24 ℃, 27 ℃, and 30 ℃, respectively. The developmental threshold temperature of T. septentrionalis was 14.15 ℃, and the effective accumulated temperature was 225.06 d·℃ .

Key words: Tetrastichus septentrionalis, Hyphantria cunea, ontogeny, effective accumulated temperature

中图分类号:

S476.3