Chironomids on Leaves of Typha domingensis in a Lagoon of Rio de Janeiro State (Brazil)

Callisto, Marcos; Serpa-Filho, Arlindo; Oliveira, Sebastião José de; Esteves, Francisco A.

doi:10.1076/snfe.31.1.51.13319

Cited by 12 publications

(8 citation statements)

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“…The Chironomidae (Diptera) larvae were identified by a 400 X optical microscope, following the methodology used by Callisto et al (1996). The recorded organisms were deposited in the Benthic Macroinvertebrate Reference Collection of the Institute of Biological Sciences of the Federal University of Minas Gerais.…”

Section: Methodsmentioning

confidence: 99%

Biodiversity assessment of benthic macroinvertebrates along a reservoir cascade in the lower São Francisco river (northeastern Brazil)

et al. 2005

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In order to verify the cascade-system effect in benthic macroinvertebrate communities, and the implications for policy making and proposals for conservation and sustainable use of the lower portion of São Francisco river basin (Bahia State, Brazil), a three-reservoir cascade system including two stretches downstream were studied during dry (June, 1997) and rainy (March, 1998) periods. The dominant groups found were Mollusca (Melanoides tuberculata), Oligochaeta, and Chironomidae larvae. Low Shannon-Wiener and Pielou index values were found, but with no significant difference between the sampling periods. However, density and taxonomic richness were significantly different (t (0.05; 31) = -2.1945; p < 0.05; e t (0.05; 31) = -3.0600; p < 0.01) between the sampling periods, with a reduction in the number of taxa and macroinvertebrate abundance during the rainy period. An increasing gradient in benthic macroinvertebrate community structures was noted along the reservoir cascade from the first reservoir (Apolônio Sales), followed by a decrease downstream from the third reservoir of the system (Xingó). Despite the negative consequences of rapid proliferation of dams, which have caused widespread loss of freshwater habitats, the reservoir cascade system promoted an increase in benthic macroinvertebrate diversity, due to water-quality improvement along the system. Key words: benthic macroinvertebrates, reservoir, biodiversity assessment, reservoir cascade concept, São Francisco river. RESUMO Avaliação da biodiversidade de macroinvertebrados bentônicos ao longo de uma cascata de reservatórios no baixo rio São Francisco (nordeste do Brasil)Com o objetivo de determinar o efeito da cascata de reservatórios nas comunidades de macroinvertebrados bentônicos e sua possível implicação para a definição de políticas e propostas para conservação e uso sustentável da porção baixa da bacia do rio São Francisco (Bahia, Brasil), amostragens foram realizadas em três reservatórios e dois trechos a jusante do último reservatório, durante os períodos de seca (junho de 1997) e chuvas (março de 1998

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Section: Methodsmentioning

confidence: 99%

Biodiversity assessment of benthic macroinvertebrates along a reservoir cascade in the lower São Francisco river (northeastern Brazil)

et al. 2005

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“…In eutrophic environments, they do so in nitrogen remobilization for the primary producers (Fukuhara & Sakamoto, 1988;Svensson & Leonardson, 1996;Svensson, 1997). In lacustrine ecosystems, these organisms participate in two webs: (a) by the detritus chain, ingesting organic fragments and associated microorganisms, (b) by the food-web, by eating smaller organisms and being consumed by other insects, alevins, aquatic birds, and benthophagous fishes (Callisto et al, 1996;Branco et al, 1997;Galdean et al, 1997;Aguiaro & Caramaschi, 1998). Therefore, in lake environments, they are important components needing further study.…”

Section: Introductionmentioning

confidence: 99%

Diversity and biomass of Chironomidae (Diptera) larvae in an impacted coastal lagoon in Rio de Janeiro, Brazil

et al. 2002

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Diversity and biomass of Chironomidae larvae were studied between January-November 1993 and MarchNovember 1994 in an impacted lagoon in Rio de Janeiro, Southeastern Brazil, in an attempt to establish the ecological consequences of anthropogenic eutrophication processes. Nine hundred and seventyfive organisms belonging to the Tanypodinae, Orthocladiinae, and Chironominae were collected. Polypedilum (62%) and Chironomus (58%) were the most common genera found in the limnetic and littoral zones.

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“…annulata and Larsia sp., as well as the other Tanypodinae, are mainly predators, and Chironomus spp. are basically detritivorous, i.e., able to live in the sediment (Callisto et al 1996) and in the detritus of plants in the littoral zone of aquatic ecosystems (Gonçalves Jr et al 2000). The large supply of detritus and other trophic resources (macrophytes, wood debris, and invertebrates) may have favored the presence of the two dominant groups in the studied wetlands (detritivorous Chironominae and predatory Tanypodinae).…”

Section: Discussionmentioning

confidence: 99%

Diversity of chironomid larvae in palustrine wetlands of the coastal plain in the south of Brazil

et al. 2006

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The Chironomidae of tropical South America are a very rich species, but are scarcely known. The range of environmental conditions under which chironomids are found is more extensive than that of any other group of aquatic insects. The objectives of this study were to carry out a diversity survey of chironomid larvae in wetland systems of the coastal plain in the south of Brazil and to analyze the effects of area, altitude, water conductivity, nitrate and phosphorus concentrations, and the life form of the dominant plant species on chironomid richness and composition. Collections were carried out from March to April in 2002. A total of 30 taxa (23 morphospecies and 7 species) distributed along 23 genera were found, and the Chironominae showed the greatest richness, followed by Tanypodinae and Orthocladiinae. The chironomid richness was higher in the emergent than in the multistratified wetland class. The wetland area, altitude, nitrate and phosphorus concentrations, and water conductivity did not influence the richness of Chironomidae. The Chironomidae genera and species were present in both the wetland classes (emergent and aquatic bed vegetation). However, while Chironominae were more frequent in the emergent than in the aquatic bed wetlands, no difference was observed for Tanypodinae. The aquatic vegetation was an important environmental predictor for chironomid larvae richness in the studied wetlands in the south of Brazil.

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Chironomids on Leaves of Typha domingensis in a Lagoon of Rio de Janeiro State (Brazil)

Cited by 12 publications

References 0 publications

Biodiversity assessment of benthic macroinvertebrates along a reservoir cascade in the lower São Francisco river (northeastern Brazil)

Biodiversity assessment of benthic macroinvertebrates along a reservoir cascade in the lower São Francisco river (northeastern Brazil)

Diversity and biomass of Chironomidae (Diptera) larvae in an impacted coastal lagoon in Rio de Janeiro, Brazil

Diversity of chironomid larvae in palustrine wetlands of the coastal plain in the south of Brazil

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