作　　者： ; ; ; ; ; ;

机构地区： 河北农业大学植物保护学院

出　　处： 《植物保护学报》 2014年第4期495-500,共6页

摘　　要： 为明确光周期对异色瓢虫Harmonia axyridis(Pallas)生殖滞育的影响,于20℃条件下测定了13个光周期组合对异色瓢虫滞育率的影响和不同虫态对滞育诱导光周期的敏感性。结果表明:20℃条件下,异色瓢虫的滞育临界光周期为6.4 L∶17.6 D和11.9 L∶8.1 D,光周期10 L∶14 D下异色瓢虫滞育率最高为94.2%。异色瓢虫的不同发育阶段对短光照10 L∶14 D的敏感性测定表明,成虫阶段对光周期反应最敏感,且成虫羽化后1~4 d对短光照的敏感性较高。结果证实异色瓢虫属于典型的短日照滞育型,成虫羽化初期是感应光周期反应的敏感虫期。 To investigate the effect of photoperiod on adult diapause of Harmonia axyridis( Pallas),the diapause rate under 13 photoperiods at 20 ℃ and the sensitive stage to diapause induction were examined. The results indicated that the diapause rate was the highest under 10 L ∶ 14 D,and 94. 2%individuals entered reproductive diapause. The critical photoperiod for adult reproductive diapause induction were 6. 4 L ∶ 17. 6 D and 11. 9 L ∶ 8. 1 D. Treatment of short light( 10 L ∶ 14 D) at different stages of H. axyridis indicated that the adult stage was the most sensitive stage and emerged adults during the first four days were more sensitive to short light. The results suggested that H. axyridis was a typical short-day induced diapause species and the newly emerged adult was the most sensitive stage to short light conditions.

关 键 词： 异色瓢虫 光周期 滞育 敏感虫期

领　　域： [农业科学] [农业科学]