Oligochaeta (Annelida) de ambientes aquáticos continentais do Estado do Mato Grosso do Sul (Brasil)

Takeda, Alice Michiyo; Fujita, Daniele Sayuri; Ragonha, Flávio Henrique; Petsch, Danielle Katharine; Montanholi-Martins, Maria Célia

doi:10.1590/1678-4766e2017107

Cited by 9 publications

(5 citation statements)

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“…However, although common in freshwater environments (Timm et al 2001), knowledge about Oligochaeta fauna in Brazilian fresh waters is still fragmented and incomplete (Alves et al 2008, Takeda et al 2017. This lacuna is mainly due to the concentration of studies related to the spatial distribution of benthic invertebrate fauna, with emphasis on insect larvae (Roque & Trivinho-Strixino 2001, Sanseverino & Nessimian, 2001, the great extent of the still unexplored parts of the Brazilian hydrographic basins (Joly et al 2011) and the low financial investment in scientific research in the country (Agostinho et al 2005, Magurran 2011.…”

Section: Introductionmentioning

confidence: 99%

Oligochaeta (Annelida: Clitellata) in the Juruena River, MT, Brazil: species indicators of substrate types

et al. 2018

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Oligochaeta assemblages are important components in freshwater environments, where their abundance and composition may indicate aspects related to water quality and sediment. The lack of information about these communities in Brazilian aquatic environments, as well as the application of native species as bioindicators of lotic environmental, stimulated the conception of this paper. Thus, the aim was to study the community of aquatic Oligochaeta in selected stretches of the Juruena River (MT), thereby generating grounds for future environmental monitoring action in lotic ecosystems. For this purpose, samples were analyzed at bimonthly intervals during the period from January to November 2009, in stretches of the Juruena River (Amazon River Basin) located in the State of Mato Grosso (MT). Two methods were used to collect the organisms: a) "D" network in small clusters of fixed macrophytes in the sediment on the river banks; and b) Ekman-Birge dredge in fine sediment. Preliminary results were 584 organisms distributed in 22 taxa. Of these, 22 valid species were identified. This number corresponds to approximately 25% of the aquatic oligochaete species registered in Brazil. Of these species, Limnodrilus hoffmeisteri, Dero nivea and Pristina rosea can be associated with organic enrichment conditions and/or some level of environmental degradation.

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Section: Introductionmentioning

confidence: 99%

Oligochaeta (Annelida: Clitellata) in the Juruena River, MT, Brazil: species indicators of substrate types

et al. 2018

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“…É importante destacar que essas diferenças podem decorrer de fatores como luminosidade do local subterrânea), oxigenação dessas águas, pois em ambientes com menor subterrâneos, a comunidade fitoplanctônica é afetada, inferindo diretamente na concentração de Sete táxons foram compartilhados por ambas as nascentes sendo eles: Oligochaeta, Elmidae, Parametriocnemus, Stenochironomus, Endotribelus, Caladomyia e Tipulidae (Figura 3). Os Oligochaeta aquáticos são bastante sensíveis a perturbações antrópicas, e, portanto, podem indicar o status-quo do ambiente (Takeda et al, 2017). Estudos sugerem que quando presentes apontam locais de vegetação primária e bom estado de conservação (Edwards & Bohlen, 1996;Piedras et al, 2006;Pimenta et al, 2016).…”

Section: As Ordens Mais Abundantes Foramunclassified

Estrutura da comunidade de macroinvertebrados bentônicos em nascentes de fragmentos de Mata Atlântica

Hagemeyer

Taques

Campos

et al. 2022

J. Env. Anal. Progr.

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A Floresta Ombrófila Mista (FOM), fitofisionomia da Mata Atlântica (MA), vem sofrendo redução de sua área original a pequenos fragmentos florestais, o que promove impactos na biodiversidade e no ambiente. As nascentes de água existentes nesses fragmentos desempenham papel crucial para a manutenção dos serviços ecossistêmicos prestados por esse bioma, que fornecem os recursos hídricos necessários ao abastecimento de cidades. Dentre os organismos presentes nesses ecossistemas aquáticos destacam-se os macroinvertebrados bentônicos. O objetivo deste estudo foi comparar a estrutura da fauna destes organismos em duas nascentes, uma superficial e uma subterrânea, ambas localizadas em fragmentos de FOM. O sedimento foi coletado por meio do amostrador Surber e os organismos foram identificados até o menor nível taxonômico possível. Posteriormente, foram realizados cálculos dos índices ecológicos e uma análise de rede para as comunidades. Os resultados demonstraram que a nascente subterrânea apresentou maior abundância com 232 organismos coletados, onde Elmidae (51%), Chironomidae (29%) e Calamoceratidae (10%) foram os táxons mais frequentes. Porém, a nascente superficial obteve maior valor de diversidade, e os táxons mais frequentes foram Chironomidae (39%), Elmidae (15%) e Polycentropodidae (10%). Os táxons Oligochaeta, Elmidae, Parametriocnemus, Stenochironomus, Endotribelus, Caladomyia e Tipulidae foram compartilhados por ambas as nascentes. Conclui-se que mesmo pertencendo a fragmentos florestais preservados e de um mesmo bioma, a localização física da nascente (superficial ou subterrânea) faz com que os organismos habitantes sejam diversos. Isso demonstra que a heterogeneidade de habitats e as condições ambientais distintas interferem na estrutura da comunidade bentônica existente em nascentes.

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“…Therefore, this study aims to analyze oligochaetes distribution in relation to the physicochemical variables of the water column; physical variation; and predominant substrates in preserved Amazonian streams in Brazil. This is a piece of valuable knowledge for the development of biomonitoring tools to assess Amazonian streams; as well as contributing to the body of knowledge about these invertebrates in the region, which is still fragmented and incomplete in all Brazilian freshwater systems (Takeda et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Aquatic Oligochaete Communities in Amazonian Streams, Saracá-Taquera National Forest, Pará, Brazil

et al. 2020

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The aim of this study was to analyze aquatic oligochaete distribution in relation to water column physicochemical variables, structural environmental variation, and predominant substrates in the preserved Amazonian streams of the Saracá-Taquera National Forest (FLONA Saracá-Taquera), northwest Pará, Brazil. Oligochaetes are widely used as bioindicators for monitoring aquatic environments as they are very sensitive to pollution and environmental changes. Physicochemical and structural variables were measured from 100 stream segments in order to understand the distribution of oligochaetes in Amazonian streams. Biotic samples were collected using Surber samplers in three of the most predominant substrate types in each segment. PERMANOVA testing showed that there was a significant difference in the oligochaete community among some substrates, potentially caused by a difference in the abundance of the most common taxa. Canonical Correspondence Analysis showed that physical variables drive the distribution of oligochaetes in preserved Amazonian streams, as they determine the formation of different substrates along the stream, from the source to the mouth; favoring the presence of oligochaetes with more specific ecological needs in low-order streams, and the presence of oligochaetes capable of colonizing various types of substrates and deeper zones in high-order streams. These results suggest that water depth and channel width are the main drivers of aquatic oligochaete distribution along Amazonian streams, determining the formation of unstable and low-quality substrates and, consequently, the low colonization by oligochaetes in high-order streams; and more diverse and stable substrate formation in low-order streams, favoring the colonization by diverse taxa of aquatic oligochaetes in low-order Amazonian streams.

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Oligochaeta (Annelida) de ambientes aquáticos continentais do Estado do Mato Grosso do Sul (Brasil)

Cited by 9 publications

References 10 publications

Oligochaeta (Annelida: Clitellata) in the Juruena River, MT, Brazil: species indicators of substrate types

Oligochaeta (Annelida: Clitellata) in the Juruena River, MT, Brazil: species indicators of substrate types

Estrutura da comunidade de macroinvertebrados bentônicos em nascentes de fragmentos de Mata Atlântica

Aquatic Oligochaete Communities in Amazonian Streams, Saracá-Taquera National Forest, Pará, Brazil

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