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DIVERSITY OF AQUATIC OLIGOCHAETA (ANNELIDA: CLITELLATA) ON LAKE CUNIÃ, BRAZILIAN AMAZON

Oligochaeta is one of the most common and abundant taxon in continental aquatic fauna. Thus, the aim of this study was to develop an inventory of aquatic oligochaetes in the Extractive Reserve of Lake Cuniã, State of Rondônia, Brazil. Collections of data were performed during the dry (August 2015) and rainy seasons (February 2016). The sediment samples were collected near the lakeside region using the kick sampling method and a kick-net sampler (mesh size of 0.25mm). This paper provides a catalog with 12 taxon from a total of 383 specimens, distributed into two families: Naididae (95%) and Opistocystidae (5%). Into naidids, the Pristininae subfamily was the most significant (85%), followed by subfamilies Naidinae (8%), Tubificinae (1%) and Rhyacondrilinae (1%). In addition, some species such as Allonais inaequalis, Aulophorus furcatus, Dero nivea, Pristina synclites, Pristina menoni and Opistocysta serrata, were recorded for the first time in the Brazilian Amazon region. Therefore, the results of this study contribute to increase knowledge on the distribution of the Oligochaeta class in Brazil, particularly in the North of the country, which is so extensive and rich in water resources, but not extensively studied.

Guilherme Gorni (Primary Presenter/Author), Araraquara University - UNIARA, grgorni@gmail.com;


Diego Gomes ( Co-Presenter/Co-Author), Araraquara University - UNIARA, diego.frgomes@gmail.com;


Nathalie Sanches ( Co-Presenter/Co-Author), Araraquara University - UNIARA, nathalie_sanches@hotmail.com;


Lucas Sahm ( Co-Presenter/Co-Author), Araraquara University - UNIARA, sahm.lucas@gmail.com;


Juliano Corbi ( Co-Presenter/Co-Author), University of São Paulo, julianocorbi@usp.br;


Vanessa Colombo-Corbi ( Co-Presenter/Co-Author), UNIARA, vanessacolombo25@yahoo.com.br;