Chironomus larvae (Chironomidae: Diptera) as water quality indicators along an environmental gradient in a neotropical urban stream

Nadja Gomes Machado, Danielle Christine Stenner Nassarden, Francyele dos Santos, Isabelle Christina Gonçalves Boaventura, Gregory Perrier, Fernanda Silveira Carvalho de Souza, Eucarlos de Lima Martins, Marcelo Sacardi Biudes

Abstract


Anthropogenic interference in urban lotic systems is a factor affecting the biota of waterbodies. Aquatic macro invertebrates are an important food source for fish and are valuable indicators of water quality. The objective of this work was to study Chironomus larvae (Chironomidae: Diptera) distribution along an environmental gradient in Barbado Stream, Cuiabá, MT, Brazil. No individual Chironomus was found in the springs of Barbado Stream, which may indicate preservation of the area. During the study period, we found 40.3 and 94.4 individuals/m2 at points 3 and 4 (low course), respectively. There is eutrophication in these sites due to domestic sewage discharges, indicating low quality water. The Barbado Stream needs restoration projects that include an awareness of the residents of their neighborhood’s environmental importance, and investments in the sanitation sector to prioritize the collection and treatment of wastewater and solid waste collection.

Keywords


aquatic macroinvertebrates; eutrophication lotic systems; water resources



Revista Ambiente & Água. ISSN:1980-993X  DOI:10.4136/1980-993X

Patrocinadores:

CAPES  CNPq  MCTI  IPABHi  PPGCA  PRPPG  UNITAU

Filiada à ABEC:

ABEC