Evaluating reproductive fitness and metabolic costs for insecticide resistance in Myzus persicae from Chile
Evaluating reproductive fitness and metabolic costs for insecticide resistance in Myzus persicae from Chile
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DOI：
10.1111/j.1365-3032.2011.00793.x
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发表时间：
2011-09-01
影响因子：
1.5
通讯作者：
Bacigalupe, Leonardo D.
中科院分区：
文献类型：
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作者：
Castaneda, Luis E.;Barrientos, Karin;Bacigalupe, Leonardo D.
害虫抗药性的发展是农业、林业和公共卫生日益严重的问题。蚜虫是普遍存在的食草性昆虫，已知约有4700种，其中不到5%成功利用农业环境。其中，桃-马铃薯蚜虫Myzus persicae Sulzer被认为是全球最重要的害虫之一，因为它对许多杀虫剂都具有抗性。尽管对杀虫剂的抗性为用杀虫剂处理的农业领域中的害虫提供了重要的益处，但它可能与无杀虫剂环境中的适合度（或其他）成本有关。在本研究中，可能经历的健身和能源成本的M。当携带至少一种杀虫剂抗性突变（杀虫突变）时，或通过具有增加的酯酶产生，评价了在无杀虫剂环境中对桃蚜的抗性。该研究调查了具有抗性的基因型是否也具有增强的酯酶产生，是否存在与杀虫剂抗性相关的任何代谢成本，以及是否存在与杀虫剂抗性和代谢支出相关的任何健身成本。内在的增加率，标准代谢率（即维护成本的措施）和组成酯酶活性测定30个不同的多位点基因型携带（或不携带）至少一个的两个最常见的杀虫剂抗性突变（MACE和kdr/超级kdr），发生在智利。结果表明，携带至少一种酯酶的基因型比没有酯酶的基因型具有更高水平的总酯酶活性，没有证据表明与总酯酶活性或酯酶相关的能量成本，也没有证据表明与总酯酶活性，酯酶或代谢率相关的生殖适合度成本。结果同意与以往的研究表明杀虫剂抗性机制之间的连锁不平衡，虽然他们与报告健身成本与杀虫剂抗性桃蚜的研究。
The development of insecticide resistance in pest insects is an increasing problem for agriculture, forestry and public health. Aphids are ubiquitous herbivorous insects, with approximately 4700 known species, of which less than 5% exploit the agricultural environment successfully. Of these, the peach-potato aphid Myzus persicae Sulzer is recognized as one of the most important pests worldwide because it has acquired resistance to many insecticides. Although resistance to insecticides provides important benefits for pests in agricultural fields that are treated with insecticides, it may be associated with fitness (or other) costs in environments that are insecticide free. In the present study, the fitness and energy costs that might be experienced by M. persicae in an insecticide-free environment when carrying at least one insecticide resistance mutation (IRM), or by having an increased production of esterases, are evaluated. The study investigates whether genotypes that have an IRM also have enhanced esterase production, whether there is any metabolic cost associated with insecticide resistance, and whether there are any fitness costs associated with insecticide resistance and metabolic expenditure. The intrinsic rate of increase, standard metabolic rate (i.e. a measure of maintenance costs) and constitutive esterase activity are determined for 30 different multilocus genotypes carrying (or not carrying) at least one of the two most frequent insecticide resistance mutations (MACE and kdr/super-kdr) that occur in Chile. The results show that genotypes carrying at least one IRM have higher levels of total esterase activity than genotypes without an IRM, that there is no evidence of an energy cost associated with total esterase activity or IRM, and no evidence for a reproductive fitness cost associated with total esterase activity, IRM or metabolic rate. The results agree with previous studies showing linkage disequilibrium between insecticide resistance mechanisms, although they contrast with those of studies that report fitness costs associated with insecticide resistance in Myzus persicae.