Emetophagy: Fipronil-induced regurgitation of bait and its dissemination from German cockroach adults to nymphs
Emetophagy: Fipronil-induced regurgitation of bait and its dissemination from German cockroach adults to nymphs
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DOI：
10.1006/pest.2001.2572
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发表时间：
2001-11-01
影响因子：
4.7
通讯作者：
Schal, C
中科院分区：
文献类型：
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作者：
Buczkowski, G;Schal, C
德国小蠊Blattella germanica（L.）（网翅目：Blattellidae）喂食氟虫腈诱饵产生的液体排泄物，有毒的同种。我们已经使用了分析和行为分析的组合，以本地化的来源，阐明的时间过程，并评估这些排泄物在促进二次杀伤的作用。氟虫腈排泄与麻痹症状的发作相一致，大多数排泄的氟虫腈（79%）在摄入诱饵后的第一个12小时内被消除。超过74%的总放射性排泄在48小时内从[C-14]氟虫腈喂养的女性从他们的口腔区域回收，延时视频分析表明，第一龄高度吸引这些排泄物。此外，第一龄优先接触垂死的女性的口腔区域和吸液的液体分泌物。食粪性，即摄入草甘膦诱导的草甘膦，可能构成了一种重要的机制，通过这种机制，速效、致吐杀虫剂在蟑螂种群中传播。(C)2001年，爱思唯尔科学。
Blattella germanica (L.) (Dictyoptera: Blattellidae) that were fed fipronil bait produced liquid excretions that were toxic to conspecifics. We have used a combination of analytical and behavioral assays to localize the source, to elucidate the time course, and to evaluate the role of these excretions in facilitation of secondary kill. Fipronil excretion coincided with the onset of the paralytic symptoms, and most of the excreted fipronil (79%) was eliminated during the first 12 h after ingestion of the bait. More than 74% of the total radioactivity excreted in 48 h from [C-14]fipronil-fed females was recovered from their oral region, and time-lapse video analysis showed that first instars were highly attracted to these excretions. Moreover, first instars preferentially contacted the oral region of dying females and imbibed the liquid exudates. Emetophagy, the ingestion of insecticide-induced regurgitate, may constitute an important mechanism by which fast-acting, emetogenic insecticides are disseminated within cockroach populations. (C) 2001 Elsevier Science.