Effects of allelochemicals from first (Brassicaceae) and second (Myzus persicae and Brevicoryne brassicae) trophic levels on Adalia bipunctata
Effects of allelochemicals from first (Brassicaceae) and second (Myzus persicae and Brevicoryne brassicae) trophic levels on Adalia bipunctata
复制标题
DOI：
10.1023/a:1005672220342
复制
发表时间：
2001-02-01
影响因子：
2.3
通讯作者：
Haubruge, E
中科院分区：
文献类型：
--
作者：
Francis, F;Lognay, G;Haubruge, E
三个油菜科物种，甘蓝型油菜（低芥子油苷含量），黑芥（包括sinigrin），白芥（包括sinalbin）被用作两种蚜虫物种的宿主植物：通性桃蚜和专性短角甘蓝。用蚜虫和寄主植物的每种组合来饲养多食性瓢虫Adalia bipunctata。实验表明，在较高的芥子油苷浓度下，瓢虫幼虫的死亡率增加。当在具有较高GLS浓度的植物上饲养时，专家蚜虫B。brassicae的毒力高于M.桃蚜。采用高效液相色谱法和气相色谱-质谱法分别对植物和蚜虫两个营养级的GLS及其降解产物异硫氰酸酯（ITC）进行了鉴定。而M.桃蚜对每种菊科植物的ITC含量较高，在B中鉴定出较高含量的ITC。芸苔样品（来自B. nigra和S. alba）。本文讨论了植物化感物质对蚜虫捕食性天敌的生物学效应，以强调作物在害虫综合治理中的生物防治作用。
Three Brassicaceae species, Brassica napus (low glucosinolate content), Brassica nigra (including sinigrin), and Sinapis alba (including sinalbin) were used as host plants for two aphid species: the generalist Myzus persicae and the specialist Brevicoryne brassicae. Each combination of aphid species and prey host plant was used to Feed the polyphagous ladybird beetle, Adalia bipunctata. Experiments with Brassicaceae species including different amounts and kinds of glucosinolates (GLS) showed increased ladybird larval mortality at higher GLS concentrations. When reared on plants with higher GLS concentrations, the specialist aphid, B. brassicae, was found to be more toxic than M. persicae. Identification of GLS and related degradation products, mainly isothiocyanates (ITC), was investigated in the first two trophic levels, plant and aphid species, by high-performance liquid chromatography and gas chromatography-mass spectrometry, respectively. While only GLS were detected in M. persicae on each Brassicaceae species, high amounts of ITC were identified in B. brassicae samples (allyl-ITC and benzyl-ITC from B. nigra and S. alba, respectively) from all host plants. Biological effects of allelochemicals from plants on predators through aphid prey are discussed in relation to aphid species to emphasize the role of the crop plant in integrated pest management in terms of biological control efficacy.