麦长管蚜抗吡虫啉品系和敏感品系的生殖力比较
Comparison of the fecundity between the imidaclopridresistant and susceptible strains of Sitobion avenae
韩晓莉2；高占林1；党志红1；李耀发1；潘文亮1
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作者单位：1河北省农林科学院植物保护研究所 河北省农业有害生物综合防治工程技术研究中心 保定 071000；2河北农业大学植物保护学院 保定 071000
中文关键词：麦长管蚜， 抗性， 吡虫啉， 适合度
英文关键词：Sitobion avenae, resistance, imidacloprid, relative biological fitness
中文摘要：通过建立抗性品系和敏感品系的种群生命表，比较麦长管蚜Sitobion avenae (Fabricius)抗吡虫啉品系和敏感品系的生殖力差异，结果表明，抗性品系适合度显著下降，世代历期延长，成蚜寿命缩短；在繁殖上表现为产仔量下降，生殖期缩短。以净生殖率(R0)和内禀增长率(rm)来评价抗性品系的相对生物适合度，抗性品系分别是敏感品系的0.520 0和0.748 1。因此，麦长管蚜对吡虫啉的抗性品系存在显著的生殖劣势。
英文摘要：The fecundity difference between the resistant strain (R) and the susceptible strain (S) of Sitobion avenae(Fabricius) was evaluated by constructing life tables. The results revealed that R strain showed developmental disadvantages, including prolonged nymphal duration and shorter adult longevity, as well as reproductive disadvantages such as lower effective fecundity and shorter fecundity stage. Compared the net reproductive rate (R 0) and intrinsic rate of increase (rm) with S strain, the relative fitness value of the R strain was calculated to be 0.5200 and 0.7481, respectively. The imidaclopridresistant strain had obvious reproductive disadvantages compared to the susceptible strain.