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首页> 外文期刊>Journal of Economic Entomology >Effects of pyriproxyfen on California red scale (Hemiptera : Diaspididae) development and reproduction
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Effects of pyriproxyfen on California red scale (Hemiptera : Diaspididae) development and reproduction

机译：吡咯氧芬对加利福尼亚红鳞（半翅目：Dia科）发育和繁殖的影响

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摘要

Two life stages of a laboratory colony of California red scale, Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae), were exposed to 10 concentrations of pyriproxyfen to evaluate the effect of this insect growth regulator (IGR) on scale development and fecundity. First instars exposed to pyriproxyfen responded with mortality during the first and second molts. Second instars were more tolerant of pyriproxyfen than were first instars, indicating that growers should treat California red scale in the field before the first molt to achieve maximum efficacy. Male scales responded with an LC50 12-fold lower and an LC90 47-fold lower than was observed for female scales. Female scales that survived first instar exposure to pyriproxyfen experienced reduced fecundity with increasing pyriproxyfen concentration. Reduced fecundity was due to reduced survival of the females rather than sterility. Results from this study provide baseline California red scale susceptibility data for pyriproxyfen, and they suggest that 1 ppm pyriproxyfen can be used as a concentration that would discriminate between susceptible and resistant populations of scales. Field monitoring for incipient pyriproxyfen resistance in California red scale should be implemented in the San Joaquin Valley of California, and if resistance is detected, integrated resistance management strategies should be used to slow the progression of resistance.
机译：将加利福尼亚红色鳞片实验室菌落的两个生命阶段，Aonidiella aurantii（Maskell）（半翅目：蛇蝎科）暴露于10种浓度的吡pyr草酚中，以评估该昆虫生长调节剂（IGR）对鳞片发育和繁殖力的影响。在第一和第二个蜕皮期中，暴露于吡吡氧芬的初生幼虫的死亡率较高。第二龄幼虫比第一龄幼虫对吡虫啉的耐受性更高，这表明种植者应在第一蜕皮之前先在田间处理加州赤鳞病，以达到最大功效。男性体重秤的LC50值比女性体重秤的低12倍，而LC90则低47倍。随着吡吡氧芬浓度的增加，初次暴露于吡吡氧芬中存活的雌性鳞片的繁殖力降低。繁殖力降低是由于雌性存活率降低而不是不育。这项研究的结果提供了吡ip昔芬的加利福尼亚红标基线敏感性数据，并且他们建议使用1 ppm吡ip昔芬的浓度可以区分易感和抗药性人群。应在加利福尼亚州的圣华金河谷现场监测加利福尼亚州红标初期的吡咯烷酚抗药性，如果检测到抗药性，则应使用综合抗药性管理策略来减缓抗药性的发展。

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