PDF(Pubmed)
Abstract：
This study compared the monogeneans community in C. monoculus from the Tapajós River (state of Pará) and Jari River (state of Amapá), northern Brazil. A total of 2188 monogeneans belonging to eight taxa were collected from the gills of fish: Gussevia arilla, Gussevia longihaptor, Gussevia tucunarense, Gussevia undulata, Sciadicleithrum ergensi, Sciadicleithrum umbilicum, Sciadicleithrum uncinatum and Tucunarella cichlae. Gussevia arilla was the dominant species for C. monoculus from the Tapajós River basin, while S. umbilicum predominated among the hosts from the Jari River basin. For the two populations of C. monoculus, the prevalence, mean intensity and mean abundance of monogeneans were different and the of parasites community had a high qualitative similarity (87.5 %). The monogeneans community of C. monoculus was characterized by high species richness, with infection values varying from low to moderate. The geographic distance and differences in environmental characteristics arising from the same did not influence the richness of species of monogeneans infesting C. monoculus in the Tapajós and Jari rivers, but appear to have been determinants in the differences observed in the structure of the monogenean communities in each region.
摘要：
这项研究比较了Tapajós河（帕拉州）和Jari河（阿马帕州）的C.monoculus中的单基因群落，巴西北部。从鱼的g中收集了总共2188个属于八个分类单元的单基因动物：Gusseviaarilla，Gussevialonghaptor，Gusseviatucunarense,格西维亚,ergensiSciadiclethrum,脐带Sciadiclethrumumbilicum,科纳杜兰和西卡纳雷。Gusseviaarilla是来自Tapajós流域的C.monoculus的优势物种，而脐带菌在贾里河流域的寄主中占主导地位。对于C.monoculus的两个种群，患病率,单基因的平均强度和平均丰度不同，寄生虫群落具有很高的质量相似性（87.5％）。C.monoculus的单系群落具有高物种丰富度的特征，感染值从低到中等不等。由此产生的地理距离和环境特征的差异并不影响在塔帕霍斯和贾里河中侵染C.monoculus的单基因物种的丰富度，但似乎是每个地区单系群落结构差异的决定因素。
