Key to the genera of Ephemerelloidea (Insecta: Ephemeroptera) from Brazil

Dias, Lucimar Gomes; Salles, Frederico Falcão; Francischetti, César N.; Ferreira, Paulo Sérgio Fiúza

doi:10.1590/s1676-06032006000100015

Cited by 9 publications

(8 citation statements)

References 9 publications

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“…The collected material was sorted in the field and conserved in 85% alcohol. Ephemeroptera identification was done using identification keys of Domı´nguez et al (2006) and Dias et al (2007). Specimens were deposited at the Zoobotanical Collection "James Alexander Ratter" -CZNX, at Universidade do Estado de Mato Grosso as a reference material.…”

Section: Methodology and Identificationmentioning

confidence: 99%

Environmental and spatial processes determining Ephemeroptera (Insecta) structures in tropical streams

Shimano

Juen

Salles

et al. 2013

Ann. Limnol. - Int. J. Lim.

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-Community diversity is expected to reflect variations in local conditions but, recently, ecologists have started to realize that local diversity is also under pressure from global processes. As a result, the traditional view of community structure based on local interspecific interactions was replaced by the idea that community structure is a result of multiple processes acting in different spatial scales. This study is aimed at quantifying the relative importance of spatial, environmental and spatially structured processes on Ephemeroptera community in Cerrado streams in Brazil. Thirty-four rivers and streams in the Brazilian state Mato Grosso were sampled. Ephemeroptera species composition, based on abundance and presence data, was evaluated in relation to niche and neutral predictors by using a partial redundancy analysis (pRDA). Results obtained through the pRDA indicated that both environmental and spatial processes influenced Ephemeroptera abundance. On the other hand, only environmental processes showed effects on community patterns when using species presence data from preserved, altered and large streams and also when looking only at the preserved sites. When streams larger than 20 m were excluded from analysis, both environmental and spatially processes showed influence on Ephemeroptera composition. Adjusted R 2 values were higher for environmental than for spatial processes in all analyses. The relatively high influence of both environmental processes and stream width in the analyses highlights the sensitivity of mayflies assemblies to environmental variation, and emphasizes the importance of local processes, as predicted by niche theory, while neutral processes act to a lesser extent on the structure of the studied communities.

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Section: Methodology and Identificationmentioning

confidence: 99%

Environmental and spatial processes determining Ephemeroptera (Insecta) structures in tropical streams

Shimano

Juen

Salles

et al. 2013

Ann. Limnol. - Int. J. Lim.

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“…Mosses and algae biofilm cover rocky substrates (Carvalho, 1989;Belle, 1992;Angrisano, 1995;Merritt and Cummins, 1996;Nieser and Melo, 1997;Carvalho and Calil, 2000;Carvalho et. al., 2002;Da-Silva et al, 2003;Olifiers et al, 2004;Salles et al, 2004;Pes et al, 2005;Dias et al, 2006) and with the aid taxonomic specialists. Functional feeding groups of aquatic insects were based on Merritt and Cummins (1996), Merritt et al (2005) and Baptista et al (2006).…”

Section: Study Areamentioning

confidence: 99%

Spatial distribution and functional feeding groups of aquatic insect communities in Serra da Bocaina streams, southeastern Brazil

Oliveira

Nessimian

2010

Acta

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Aim: The aim of this paper was to study the spatial distribution and functional feeding structure of aquatic insect communities of 18 streams at different altitudes in Mambucaba River Basin, Serra da Bocaina, Southeastern Brazil; Methods: Samples were collected in two consecutive dry periods (August of 2003 and being sampled four substrate types in each stream: litter from riffles, litter from pools, rocks and gravel; Results: We identified 75,581 aquatic insect individuals belonging to 201 taxa. Most of the fauna was found in litter substrates (64%), and riffle litter substrate had the majority of the specimens (32,572 individuals). Gravel was the substrate with highest values of richness (29.84 taxa expected for 187 individuals; rarefaction method) and Shannon's diversity (H' = 2.370). Rock substrate showed the lowest richness (20.24 taxa). Distribution of taxa across substrates shows that only 28 taxa are restricted to a single substrate, while 78 taxa occurred in all substrates. The indicator analysis showed that 20 taxa were characteristic of pool litter, 25 of riffle litter, 22 of gravel and only nine to rock. In relation to organic and inorganic substrates, 29 taxa were characteristic of litter, and 17 of inorganic substrates. Cluster analysis based on Bray-Curtis dissimilarity index and UPGMA linkage method showed that aquatic insects were distributed according to substrate and food resource. In all substrates, the main functional feeding group was collector-gatherer (40.64%), and the least representative was shredder (6.67%). ANOVA and Tukey HSD tests showed that collector-gatherers and shredders were predominant in pool substrates, collector-filters in riffle substrate and scrapers in hard substrates; Conclusion: Ours results show that independently of stream or altitude, substrate of the same type have similar faunal assemblages. The abundance and relative proportion of the functional feeding group showed variation across habitats.Keywords: distribution, habitats, substrates, benthic macroinvertebrates.Resumo: Objetivo: O objetivo deste artigo foi estudar a distribuição espacial e a categorização funcional trófica da comunidade de insetos aquáticos de 18 riachos em diferentes altitudes na Bacia do Rio Mambucaba, Serra da Bocaina, Sudeste do Brasil; Métodos: As amostras foram coletadas em dois períodos secos consecutivos (agosto de 2003 e 2004), sendo coletados em quatro tipos de substratos: folhiço em correnteza, folhiço de fundo, pedras e cascalho; Resultados: Foram identificados 75.581 indivíduos de insetos aquáticos pertencentes a 201 táxons. Os substratos com folhiço concentraram a maior parte da fauna (64%), sendo o folhiço em correnteza o substrato com maior abundância de indivíduos (32.572). O cascalho apresentou os maiores valores de riqueza (29,84 táxons esperado em 187 indivíduos; método da rarefação) e diversidade de Shannon (H' = 2,370). A menor riqueza (20,24 táxons) foi observada no substrato pedra. A distribuição dos táxons entre os substratos mostrou 28 táxons restritos a um...

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“…Insects were identified to the lowest taxonomic level, except for Diptera (family level), using keys or taxonomic descriptions (Carvalho 1989, Belle 1992, Angrisano 1995, Merritt & Cummins 1996, Wiggins 1996, Nieser & Melo 1997, Carvalho & Calil 2000, Carvalho et al 2002, Da-Silva et al 2003, Olifiers et al 2004, Salles et al 2004, Pes et al 2005, Dias et al 2006, Passos et al 2007) and with the aid of specialists.…”

Section: Samplingmentioning

confidence: 99%

Aquatic macroinvertebrate diversity and composition in streams along an altitudinal gradient in Southeastern Brazil

Henriques-Oliveira

Nessimian

2010

Biota Neotrop.

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Aquatic macroinvertebrate diversity and composition in streams along an altitudinal gradient in Southeastern Brazil. A study concerning taxonomic richness and composition of the aquatic insect fauna in streams within the same catchment basin along an altitudinal gradient in Southeast Brazil, was conducted to test the hypothesis that there is a faunal discontinuity in the biocenotic composition, related to differences in altitude and latitude. In Southeastern Brazil, around latitude 22°, this faunal transition from rhithron to potamon biocenosis should occur at 500 m above sea level. Eighteen tributaries of the Mambucaba River, at Serra da Bocaina National Park, SP-RJ, Brazil, were studied. The streams were separated into 6 altitudinal zones (zone 1: above 1500 m; zone 2: 1200-1300 m; zone 3: 900-1000 m; zone 4: 400-700 m; zone 5: 100-300 m; and zone 6: 0-100 m) each including three streams. The aquatic insects were identified at the lowest possible taxonomic level. The highest richness was observed in altitudes between 1200-1300 m, while the lowest occurred in altitudes below 100 m. The Indicator Value method indicated taxa characteristic for four of the six altitudinal zones considered in this paper. Sorensen's Index and CCA results showed that distribution and composition of aquatic insect fauna of Serra da Bocaina National Park was influenced primarily by altitude and temperature rather than stream size. The absence of indicator species and the lower abundance in altitudes between 400-700 m suggest a transition from rhithral to potamal fauna, which is distinct at 200 m. Resumo: Riqueza de macroinvertebrados aquáticos em riachos ao longo de um gradiente altitudinal no Sudeste do Brasil. Um estudo da riqueza e composição da fauna de insetos aquáticos de uma bacia hidrográfica com ênfase no gradiente altitudinal foi conduzido com o objetivo de testar a hipótese de que existe uma descontinuidade na composição da fauna relacionada à altitude e latitude. Na região Sudeste do Brasil, próxima à latitude 22°, a transição da fauna ritral-potamal deveria ocorrer em torno de 500 m. Com este objetivo central foram estudados 18 afluentes do Rio Mambucaba, Parque Nacional da Serra da Bocaina, SP-RJ, divididos em 6 faixas altitudinais (faixa 1: acima de 1500 m; faixa 2: 1200-1300 m; faixa 3: 900-1000 m; faixa 4: 400-700 m; faixa 5: 100-300 m e faixa 6: 0-100 m), sendo amostrados três riachos por faixa de altitude. Os insetos aquáticos foram identificados até o menor nível taxonômico possível. A maior riqueza foi observada nas altitudes entre 1200-1300 m, enquanto a menor riqueza ocorreu em altitudes inferiores a 100 m. O teste de espécies indicadoras mostrou táxons característicos para quatro das seis zonas altitudinais consideradas no presente trabalho. Os resultados do índice de Similaridade de Sorensen e da CCA mostraram que a comunidade de insetos aquáticos do Parque Nacional da Serra da Bocaina foi influenciada primariamente pela altitude e temperatura mais do que o tamanho do rio. A ausência de táxons indicat...

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Key to the genera of Ephemerelloidea (Insecta: Ephemeroptera) from Brazil

Cited by 9 publications

References 9 publications

Environmental and spatial processes determining Ephemeroptera (Insecta) structures in tropical streams

Environmental and spatial processes determining Ephemeroptera (Insecta) structures in tropical streams

Spatial distribution and functional feeding groups of aquatic insect communities in Serra da Bocaina streams, southeastern Brazil

Aquatic macroinvertebrate diversity and composition in streams along an altitudinal gradient in Southeastern Brazil

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