Modelling the spatial distribution of aquatic insects (Order Hemiptera) potentially involved in the transmission of Mycobacterium ulcerans in Africa.
Modelling the spatial distribution of aquatic insects (Order Hemiptera) potentially involved in the transmission of Mycobacterium ulcerans in Africa.
复制标题
模拟潜在地参与非洲分枝杆菌传播的水生昆虫的空间分布（有序半翅目）。
DOI：
10.1186/s13071-018-3066-3
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发表时间：
2018-09-06
影响因子：
3.2
通讯作者：
Pullan RL
中科院分区：
文献类型：
--
作者：
Cano J;Rodríguez A;Simpson H;Tabah EN;Gómez JF;Pullan RL
属于半翅目的水生咬虫被认为是布鲁里溃疡（BU）流行地区溃疡分枝杆菌的潜在媒介。如果是这样的话，这些昆虫将有望与溃疡分枝杆菌在同一地理区域共存。在这里，我们研究了六个水生半翅目科的地理分布，这些科被认为是溃疡分枝杆菌的媒介，并探索了它们在流行国家报告布鲁里溃疡病例的社区的潜在地理重叠。我们开发了六个半翅目（Naucoridae, Belostomatidae, Notonectidae, Nepidae， Corixidae和Gerridae）的预测分布的集成生态模型，应用了一个强大的建模框架，收集了记录的存在和一套环境和地形因素。利用生态位因子分析法（ENFA）对半足类动物的生态位进行了分析。最后，我们在喀麦隆和加纳这两个流行国家探讨了这些昆虫和布鲁里菌在地理上可能共存的情况。根据我们的模型，Naucoridae科和Belostomatidae科的物种广泛分布在非洲，尽管在干燥和炎热的地区没有。叮咬半翅目的另外两个科，即蠓科和蠓科，分布范围较为有限，主要分布在非洲西部和南部。所有这四个咬水虫科广泛分布在西非沿海地区。它们将在年平均气温在15-22°C之间变化、年降雨量适中（即350-1000毫米/年）和靠近水道的地区茁壮成长。所有半足类动物都表现出对农业景观和城市化地区等人为环境的偏好。最后，我们的分析表明溃疡分枝杆菌和这些水生昆虫物种可能共存于同一生态位，尽管在不同的BU流行区物种多样性可能存在差异。我们的研究结果预测了水生半足类科的某些物种与BU在地理上的共存。考虑到现有的生物学证据表明其中一些水生昆虫是溃疡分枝杆菌的潜在传播媒介，它在布鲁里溃疡流行地区的存在应被视为一个危险因素。本文提出的生态模型可能有助于为未来基于环境的模型提供信息，这些模型旨在描述布鲁里菌在非洲地区的潜在地理分布。本文的在线版本（10.1186/s13071-018-3066-3）包含补充材料，授权用户可使用。
Biting aquatic insects belonging to the order Hemiptera have been suggested as potential vectors of Mycobacterium ulcerans in endemic areas for Buruli ulcer (BU). If this is the case, these insects would be expected to co-exist with M. ulcerans in the same geographical areas. Here, we studied the geographical distribution of six aquatic Hemiptera families that are thought to be vectors of M. ulcerans and explored their potential geographical overlapping with communities reporting BU cases in endemic countries. We have developed ensemble ecological models of predicted distribution for six families of the Hemiptera (Naucoridae, Belostomatidae, Notonectidae, Nepidae, Corixidae and Gerridae) applying a robust modelling framework over a collection of recorded presences and a suite of environmental and topographical factors. Ecological niche factor analysis (ENFA) was first used to identify factors that best described the ecological niches for each hemipteran family. Finally, we explored the potential geographical co-occurrence of these insects and BU in two endemic countries, Cameroon and Ghana. Species of the families Naucoridae and Belostomatidae, according to our models, are widely distributed across Africa, although absent from drier and hotter areas. The other two families of biting Hemiptera, the Notonectidae and Nepidae, would have a more restricted distribution, being more predominant in western and southern Africa. All these four families of biting water bugs are widely distributed across coastal areas of West Africa. They would thrive in areas where annual mean temperature varies between 15–22 °C, with moderate annual precipitation (i.e. 350–1000 mm/annual) and near to water courses. Species of all hemipteran families show preference for human-made environments such as agricultural landscapes and urbanized areas. Finally, our analysis suggests that M. ulcerans and species of these aquatic insects might coexist in the same ecological niches, although there would be variation in species diversity between BU endemic areas. Our findings predict the geographical co-existence of some species of aquatic hemipteran families and BU. Considering the existing biological evidence that points to some of these aquatic insects as potential phoretic vectors of M. ulcerans, its presence in BU endemic areas should be considered a risk factor. The ecological models here presented may be helpful to inform future environmental based models intended to delineate the potential geographical distribution of BU in the African region. The online version of this article (10.1186/s13071-018-3066-3) contains supplementary material, which is available to authorized users.