Kirst F D, Marinoni L, Krüger R F
Departamento de Zoologia, Programa de Pós-Graduação em Entomologia,Universidade Federal do Paraná,Caixa Postal 19020, CEP 81531-980,Curitiba, PR,Brazil.
Departamento de Microbiologia e Parasitologia,Universidade Federal de Pelotas, Instituto de Biologia,campus universitário, Caixa Postal 354, CEP 96010-900,Pelotas, RS,Brazil.
Bull Entomol Res. 2017 Oct;107(5):645-657. doi: 10.1017/S0007485317000128. Epub 2017 Feb 10.
The natural areas of the Coastal Plain of Rio Grande do Sul (CPRS) have suffered fragmentation due to anthropic action. The faunal surveys offer a low-cost method to quickly evaluate environmental alterations, and Syrphidae flies are often used as models in this kind of study. We aimed to ascertain the diversity of Syrphidae in the South region of Brazil by estimating its species' richness, and to use this data to identify new areas for conservation. In this survey Malaise traps were installed for 8 days in the CPRS, which was divided into five regions. Each region was subdivided into seven collecting areas and each of those areas received four traps, totaling 140 traps. A total of 456 Syrphidae individuals from 18 genera and 49 species were collected. In Region 1, there were nine exclusive species; in Region 2, there were three; in Region 3, there were 13, ten of which came from Estação Ecológica do Taim (ESEC Taim). In the Individual-based rarefaction analysis, Region 1 possessed the largest number of expected species out of the regions in the CPRS; we found 97% of these species. This insect collection effort, as one of the first in the CPRS, has broadened the known geographic distributions of 11 species of Syrphidae, and also indicated areas to be conserved. Additionally, it gave support for expanding ESEC Taim and creating new areas of conservation in Region 1, in Arroio Pelotas and Arroio Corrientes.
南里奥格兰德州沿海平原（CPRS）的自然区域因人类活动而遭受破碎化。动物调查提供了一种低成本的方法来快速评估环境变化，食蚜蝇科苍蝇经常被用作这类研究的模型。我们旨在通过估计巴西南部地区食蚜蝇科的物种丰富度来确定其多样性，并利用这些数据识别新的保护区。在这次调查中， malaise诱捕器在CPRS安装了8天，该地区分为五个区域。每个区域又细分为七个采集区，每个采集区放置四个诱捕器，总共140个诱捕器。共采集到来自18个属49种的456只食蚜蝇科个体。在区域1，有9个特有物种；在区域2，有3个；在区域3，有13个，其中10个来自塔伊姆生态站（ESEC Taim）。在基于个体的稀疏分析中，区域1在CPRS的各区域中拥有最多的预期物种；我们发现了其中97%的物种。这次昆虫采集工作作为CPRS的首批工作之一，拓宽了11种食蚜蝇科已知的地理分布范围，还指明了需要保护的区域。此外，它为扩大ESEC Taim以及在区域1的佩洛塔斯河和科连特斯河创建新的保护区提供了支持。
