Identification of two species within the Anopheles minimus complex in northern Vietnam and their behavioural divergences
Identification of two species within the Anopheles minimus complex in northern Vietnam and their behavioural divergences
复制标题
越南北部微小按蚊群内两个物种的鉴定及其行为差异
DOI：
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发表时间：
1999
影响因子：
3.3
通讯作者：
M. Coosemans
中科院分区：
文献类型：
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作者：
W. Bortel;H. D. Trung;N. Manh;P. Roelants;P. Verlé;M. Coosemans
摘要阐明主要疟疾病媒分类群的复杂分类状况并确定每个复合体中个别物种的特征，对于了解东南亚区域病媒系统的复杂性非常重要，并将有助于估计病媒控制措施的影响。这适用于老挝、柬埔寨和越南等国家，这些国家将约60%的疟疾控制预算用于实施媒介控制活动。我们用同工酶电泳法对微小按蚊进行了鉴定。在越南北部的物种组成，并确定个别物种的行为差异。从1995年6月至11月，采用不同的收集方法，在4个村庄每月捕获一次成蚊。一种。小球藻(Minus S.L.)可以与亲缘关系密切的物种区分开来。Acontes和An.Jeyporiens，位于辛醇脱氢酶(ODH)基因座上。显著的正FIS值提供了在AN内非随机交配的明确证据。小球藻(Minus S.L.)人口。ODH基因座杂合子缺乏率最高，可诊断为2个同域AN。产于越南的一种与安氏类似的微小动物。泰国已知的小蜂属A和C种。我们没有发现在两个AN中的任何一个的每月样本、村庄或收集方法之间限制基因流动的证据。最小的物种。它们在一起出现，但根据采集地点的不同比例不同，并且有不同的休息和咬合行为。因此，矢量控制策略将对这个不同的矢量系统的各个组成部分产生不均匀的影响。
Summary Elucidating the complex taxonomic status of the major malaria vector taxa and characterising the individual species within each complex is important for understanding the complexity of the vector system in the south‐east Asian region and will allow to estimate the impact of vector control measures. This applies to countries such as Laos, Cambodia and Vietnam that spend about 60% of their malaria control budget on implementing vector control activities. We used isozyme electrophoresis to clarify the Anopheles minimus s.l. species composition in northern Vietnam and identify behavioural divergences of individual species. Using different collection methods, adult mosquitoes were caught at monthly intervals from June to November 1995 in four villages. An. minimus s.l. could be distinguished from closely related species, An. aconitus and An. jeyporiensis, at the Octanol dehydrogenase (Odh) enzyme locus. Significant positive Fis values gave clear evidence of nonrandom mating within the An. minimus s.l. population. The highest heterozygote deficiency was observed at locus Odh, which was diagnostic for 2 sympatric An. minimus species in Vietnam similar to the An. minimus A and C species known from Thailand. We found no evidence for restricted gene flow between monthly samples, villages, or collection methods in either of the two An. minimus species. They occurred in sympatry, but in different proportions depending on the collection site, and had dissimilar resting and biting behaviours. Thus a vector control strategy will have a nonuniform effect on the various components of this diverse vector system.