Local factors affecting the testate amoeba community (Protozoa: Arcellinida; Euglyphida) in a neotropical floodplain

Arrieira, Rodrigo Leite; Alves, Geziele Mucio; Schwind, Leilane Talita Fatoreto; Lansac‐Tôha, Fábio Amodêo

doi:10.4081/jlimnol.2015.1078

Cited by 14 publications

(16 citation statements)

References 33 publications

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“…Arcellidae is commonly recorded as one of the most representative families of testate amoebae in Neotropical ecosystems in terms of richness and abundance of species (Vucetich, 1973;Panarelli, Casanova, Nogueira, Mitsuka, & Henry, 2003;Fulone, Vieira, Velho, & Lima, 2005; Lansac-Tôha, Robertson, & Joko, 2008;Escobar, Brenner, Whitmore, Kenney, & Curtis, 2008;Oliveira & Hardoim, 2010;Arrieira, Alves, Schwind, & Lansac-Tôha, 2015). This family is characterized by specimens with shells made up of endogenous material, with discoid or hemispherical shape and centered pseudostoma (Souza, 2008).…”

Section: Introductionmentioning

confidence: 99%

An annotated checklist of the Arcella (Arcellidae) from littoral zone of Paranoá lake-Brazil, with a pictorial key

Silva¹,

Rangel²,

Lansac‐Tôha³

et al. 2016

Acta Sci. Biol. Sci.

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The pictorial key contributes to taxonomic analysis, as it lists the species found in a given environment, and points out the morphological characteristics that differs one specific taxon from the others. Arcellidae Ehrenberg, 1830 is one of the testate amoebae families with highest representativity in terms of richness and abundance, including three genera, that Arcella shows greater dispersion in different types of aquatic biotopes. The zooplankton community in the Paranoá Lake has been extensively studied over the decades. However, there are no studies on testate amoebae in this environment. The study aimed to develop a pictorial key to help in the identification of Arcella in the Paranoá Lake. Samples were taken with plankton net at 13 sites in the littoral zone of the lake. The elaboration of the key was based on morphological characteristics of the shell and pseudostoma of the individuals. There were identified 23 taxa, 16 species and seven subspecies. Two species with low incidence in Brazil were recorded (Arcella catinus and Arcella rota). The species richness was higher than the records published to date in Brazil, thus demonstrating the relevance of the data and the applicability of this pictorial key in other studies both in the Paranoá Lake, as in other regions.

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Section: Introductionmentioning

confidence: 99%

An annotated checklist of the Arcella (Arcellidae) from littoral zone of Paranoá lake-Brazil, with a pictorial key

Silva¹,

Rangel²,

Lansac‐Tôha³

et al. 2016

Acta Sci. Biol. Sci.

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“…The most representative exogenous testate amoebae families recorded in these lakes (Difflugiidae and Centropyxidae) also exhibited high species diversity on Neotropical floodplains (Arrieira, Alves, Schwind, & Lansac‐Tôha, ; Lansac‐Tôha et al, ; Schwind, Arrieira, Simões, Bonecker, & Lansac‐Tôha, ). On the other hand, the families Lesquereusidae, Phryganellidae, and Plagiopyxidae showed a smaller number of species as they have a restricted distribution and low presence in the planktonic environment (Velho, Lansac‐Tôha, Bonecker, & Zimmermann‐Callegari, ).…”

Section: Discussionmentioning

confidence: 97%

Testate amoebae as indicators for suspended inorganic material in floodplains influenced by dam

Schwind

Arrieira

Mantovano

et al. 2018

Internat Rev Hydrobiol

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The construction of reservoirs impacts upon freshwater ecosystems, since it changes the hydrodynamics of the entire system upstream and downstream of the dam due to flow control and changes in environmental conditions. We analyzed the temporal variation in the abundance of exogenous testate amoebae related to the suspended inorganic material in Neotropical floodplain lakes, downstream of a series of dams. Sampling was carried out between 2000 and 2012 in six lakes in the upper Paraná River floodplain. The temporal variation in the abundance of the testate amoeba community was analyzed using the Threshold Indicator Taxa Analysis. Cucurbitella crateriformis, Protocucurbitella coroniformes, and C dentata f. quinquilobata had reduced population growth in higher concentrations of suspended inorganic material. On the other hand, Difflugia lobostoma, Centropyxis ecornis, and Difflugia pseudogramen populations increased under these conditions. These results showed that an increased flow of water could favor the growth of some populations due to the greater exchange of material between the lakes and the floodplain. The positive or negative responses could show better adaptation of the testate amoeba species to the planktonic environment. Furthermore, these results also highlighted the bioindicator role of these protozoa in aquatic ecosystems.

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“…Numerous studies have shown that the presence of these families is frequently recorded in freshwater environments (Green, 1975;Dabés, 1995;Landa and Mourguês-Schurter, 2000), particularly in the Upper Paraná River basin (Lansac-Tôha et al, 2004Alves et al, 2010Alves et al, , 2012Arrieira et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Effect of daily variation on the seasonality of testate amoebae community structure in different environments of a Neotropical floodplain

et al. 2015

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Local factors affecting the testate amoeba community (Protozoa: Arcellinida; Euglyphida) in a neotropical floodplain

Abstract: The

Cited by 14 publications

References 33 publications

<b>An annotated checklist of the <i>Arcella</i> (Arcellidae) from littoral zone of Paranoá lake-Brazil, with a pictorial key

<b>An annotated checklist of the <i>Arcella</i> (Arcellidae) from littoral zone of Paranoá lake-Brazil, with a pictorial key

Testate amoebae as indicators for suspended inorganic material in floodplains influenced by dam

Effect of daily variation on the seasonality of testate amoebae community structure in different environments of a Neotropical floodplain

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