Andrade David Campos, Morais Sirlei Antunes, Marteis Letícia Silva, Gama Renata Antonaci, Freire Renato Cesar de Melo, Rekowski Belgrano Santiago, Ueno Helene Mariko, La Corte Roseli
Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal de Sergipe, São Cristóvão 49100-000, SE, Brazil.
Departamento de Morfologia, Universidade Federal de Sergipe, Avenida Marechal Rondon, S/N, São Cristóvão 49100-000, SE, Brazil.
Insects. 2020 Jul 24;11(8):468. doi: 10.3390/insects11080468.
Mosquito fauna in the northeast semiarid region of Brazil, Caatinga biome, are poorly known. Studies on the diversity are scarce and the few surveys available focus on local fauna. In order to understand the ecological pattern of mosquito's distribution, information available from studies from 2008 to 2015 were gathered. A partitioning framework of the beta diversity, the turnover (βJTU) and nestedness (βJNE) components were used to determine dissimilarity among communities. Eighty-two morphospecies were recorded and 47 of the species were not shared between the areas. The most representative genera were , , , , , and , which all include species of medical interest. The communities had high rates of variation, and the mechanism of turnover accounted for the observed diversity pattern. Despite differences in collection methods, the observed dissimilarity may be related to the broad environmental heterogeneity of the biome, the intrinsic relationships of the species with their habitats, and the environmental degradation caused by different types of anthropogenic interference. Considering the mosquito species richness and endemicity, the hypothesis that the Caatinga harbor poor biodiversity is rejected. The spatial variation observed is of particular importance and should be taken into account for the knowledge of Caatinga biodiversity.
巴西东北部半干旱地区卡廷加生物群落的蚊虫种类鲜为人知。关于其多样性的研究稀缺，现有的少数调查集中在当地的动物群。为了了解蚊虫分布的生态模式，收集了2008年至2015年研究中的可用信息。使用了β多样性的划分框架，即周转率（βJTU）和嵌套性（βJNE）成分来确定群落之间的差异。记录了82个形态种，其中47个物种在各区域之间没有共享。最具代表性的属是 、 、 、 、 和 ，它们都包含具有医学意义的物种。群落具有较高的变异率，周转率机制解释了观察到的多样性模式。尽管采集方法存在差异，但观察到的差异可能与生物群落广泛的环境异质性、物种与其栖息地的内在关系以及不同类型人为干扰导致的环境退化有关。考虑到蚊虫物种的丰富度和特有性，卡廷加生物多样性贫乏的假设被否决了。观察到的空间变异尤为重要，对于了解卡廷加生物多样性应予以考虑。
