Abstract

Females of the hymenopteran parasitoid Habrobracon hebetor show two types of photoperiodic response: development under short day conditions results in an increase of the adult size (quantitative response) and in the induction of reproductive diapause (qualitative response). In a study conducted with individuals from a laboratory population, the progeny of each female was divided into two groups, which developed under the short (10 h) and long (18 h) day conditions. Females significantly differed both in the mean body size of the progeny and in the proportion of diapausing individuals. The qualitative and quantitative responses interact: short day caused an increase in size only in diapausing individuals. In addition, family analysis revealed significant positive correlations between the proportion of diapausing individuals (a manifestation of the qualitative response) and the mean size of the progeny (a manifestation of the quantitative response). The results of the study support the hypothesis on the unity of the mechanism of the qualitative and quantitative photoperiodic responses.

中文翻译：

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Habrobracon hebetor（Say）（膜翅目，Bra科）定性和定量光周期反应的种群内变异性

摘要

膜翅类寄生虫Habrobracon hebetor的雌性显示出两种类型的光周期反应：在短日条件下发育会导致成年大小增加（定量反应）和诱发生殖滞育（定性反应）。在对来自实验室人群的个体进行的研究中，每位雌性的后代分为两组，分别在短（10 h）和长（18 h）日条件下发育。雌性在后代的平均体型和滞育个体的比例上均存在显着差异。定性和定量反应相互作用：短日仅在滞育个体中引起体型增加。此外，家庭分析表明，滞育个体的比例（定性反应的一种表现）与后代的平均大小（定量反应的一种表现）之间存在显着的正相关。研究结果支持关于定性和定量光周期反应机理统一的假设。