Amebas testáceas (Arcellinida e Euglyphida) em dois biótopos de um corpo aquático temporário contaminado por dejetos orgânicos: novas ocorrências para o estado da Bahia

Silva, Lanna Jéssica Gomes da; Silva, Márcio Borba da; Fraga, Ricardo Evangelista; Anjos, Matheus Santos dos; Rocha, Cínthya Viana Souza; Santos, Stefânia Pereira; Rocha, Mariane Amorim

doi:10.14808/sci.plena.2020.068001

Cited by 3 publications

(3 citation statements)

References 31 publications

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“…The species distributions were determined using available references for each state: Acre State (Araújo 2019), Amapá State ( Vieira 2017), Amazonas (Arrieira et al 2016;Arrieira et al 2017;Reczuga et al 2015), Bahia (Cunha 1916;Neumann-Leitão and Nogueira-Paranhos 1987;Silva et al 2009;Cruz 2012;Araújo and Nogueira 2016;Silva 2016;Silva et al 2020), Ceará (Cunha 1913), Goiás (Lansac-Tôha et al 2000bArrieira et al 2017), Maranhão (Picapedra et al 2017), Mato Grosso (Hardoim andHeckman 1996;Missawa 2000;Oliveira and Hardoim 2010;Arrieira et al 2017), Mato Grosso do Sul (Torres 1996;Velho et al , 1999Alves et al 2007Alves et al , 2008, Minas Gerais (Dabés 1995;Dabés and Velho 2001;Souza 2005;López 2009), Pará Matsumura-Tundisi et al 2015;Vieira 2017;Gomes 2020), Paraná (Velho et al , 1999Alves et al 2007Alves et al , 2008Lansac-Tôha et al 2014;Arrieira et al 2017), Pernambuco (Neumann--Leitão andNogueira-Paranhos 1987), Piauí (Cunha 1916;Picapedra et al 2017), Rio de Janeiro (Wailes 1913;…”

Section: Methodsmentioning

confidence: 99%

“…Testate amoebae are single-celled protists whose protoplasm is contained within a carapace (Silva et al 2020). They are a polyphyletic group, belonging to the Amoebozoa (Tubulinia) and Rhizaria (Cercozoa) (Smith et al 2008;Adl et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Studies on testate amoebae have likewise been scarce in Bahia state, with only six publications: Cunha (1916), Neumann-Leitão and Nogueira-Paranhos (1987), Silva et al (2009), Cruz (2012), Araújo and Nogueira (2016), and Silva et al (2020). The total described fauna of testate amoebae in Bahia currently consists of 151 taxa.…”

Section: Introductionmentioning

confidence: 99%

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Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimbús, Chapada Diamantina, Bahia state, Brazil, including new occurrences

Rocha¹,

Anjos²,

Brandão³

et al. 2021

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Testate amoebae are single-celled protists whose protoplasm is contained within a carapace composed of gelatinous to imbricated chitinous plates having variable chemical compositions. We inventoried the testate amoebae community present in the plankton and periphyton of the Pantanal dos Marimbus swamp in Bahia state, Brazil. Sixty-five samples of plankton and periphyton were analyzed during May and September/2014 and April/2015. We identified 65 taxa of testate amoebae distributed in eight families, 15 genera, 45 species, and 16 varieties. The most representative families were Arcellidae, Centropyxidae, and Difflugiidae, corresponding to 24.6%, 19.7% and 14.8% of the taxa respectively. The periphyton had greater richness (59 taxa) than the plankton (39 taxa). Of the taxa found, 15 represent new records for Bahia and 14 for northeastern Brazil. The Marimbus Pantanal swamp showed an expressive richness of testate amoebae, and our data increases the number of species of these organisms known to Bahia and northeastern Brazil, where work with those organisms is still scarce.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimbús, Chapada Diamantina, Bahia state, Brazil, including new occurrences

Rocha¹,

Anjos²,

Brandão³

et al. 2021

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Microprotozooplankton as eutrophication bioindicator for tropical coastal lagoons

Rocha,

de Carvalho e Féres,

Kandler

et al. 2024

Mar. Freshw. Res.

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Context and aims A reliable bioindicator index of eutrophication is still lacking for monitoring zooplankton in saline, coastal lagoons. We aimed to establish plankton bioindicators of eutrophication that are not affected by salinity variation, which is essential for environmental monitoring of coastal lagoons. Methods Sampling was conducted for microprotozooplankton, chlorophyll-a, nutrients and sterols in eight tropical coastal lagoons with different saline and nutrient concentrations. A testate amoeba and rotifer bioindication index of eutrophication (T&R index) was proposed after establishing a list of indicator species on the basis of five statistical criteria and one bibliographic criterion. Key results Selected species, based on the six criteria, were Arcella hemisphaerica, Brachionus plicatilis, Galeripora (Arcella) discoides, Netzelia corona, Lecane closterocerca, Lepadela patella and Testudinela patina. Biodiversity measures, traditionally used in biomonitoring, varied negatively with salinity (r = −0.60 for Margalef richness and −0.59 for Shannon diversity) and were not correlated with nutrient concentrations. Conversely, the T&R index showed no correlation with salinity (r = 0.002) and was positively correlated with the trophic-state index (TSI) (r = 0.62). Conclusions and implications Our results showed that specific patterns of indicator microprotozooplankton species can effectively diagnose organic pollution in coastal lagoons and their use is a more suitable approach than is the use of community indicators such as richness, evenness and diversity, traditionally used for that task.

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Effects of urbanization on the diversity of testate amoebae (Protist, Rhizopoda) in a stream of the southwestern Amazon basin (Igarapé São Francisco in Acre state, Brazil)

Gonçalves Araujo,

Sampaio Cabral,

Corrêa

et al. 2023

Acta Protozool.

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We investigated the diversity of testate amoebae in an urban stream located within the Igarapé São Francisco Environmental Protection Area in Acre, northern Brazil, during the dry season, and evaluated the factors mediating the structure of this protist community. We collected 108 water samples for the analysis of the testate amoeba community and the limnological variables at six sampling points on the stream, between July and September 2018. We used a Redundancy Analysis (RDA) to verify the influence of environmental variables on the protist community. We recorded 76 species of testate amoebae from eight families, with most records from the families Difflugiidae, Arcellidae, Centropydae and Netzeliidae. More than half (49) of the species were recorded in Acre for the first time. The abundance of the amoebae of the family Trigonopiridae was regulated by the dissolved oxygen concentrations and the pH, while that of the Netzeliidae, Dif-flugiidae and Lesquereusidae was influenced by the pH, chloride concentrations, and the depth and transparency of the water. In the case of the family Arcellidae, abundance was determined by the turbidity and transparency of the water and the nitrate concentrations, while that of Centropyxis sp. was associated with the concentrations of thermotolerant coliforms. These findings indicate that, while the São Francisco stream is subject to anthropogenic impacts, it still presents adequate conditions for these organisms in some of its stretches. The abundance of these amoebae was influenced primarily by the productivity of the system, as indicated by the high protist densities recorded in the areas in which primary productivity was highest. These findings support the use of these protists in studies that investigate the most appropriate indicator organisms that respond to anthropogenic impacts and shifts in environmental quality.The results of the present study demonstrated the importance of this aquatic ecosystem for the biodiversity of the study area, and the need to further expand our knowledge on the adaptations and interactions of the aquatic communities of the Amazon region.

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Amebas testáceas (Arcellinida e Euglyphida) em dois biótopos de um corpo aquático temporário contaminado por dejetos orgânicos: novas ocorrências para o estado da Bahia

Cited by 3 publications

References 31 publications

Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimbús, Chapada Diamantina, Bahia state, Brazil, including new occurrences

Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimbús, Chapada Diamantina, Bahia state, Brazil, including new occurrences

Microprotozooplankton as eutrophication bioindicator for tropical coastal lagoons

Effects of urbanization on the diversity of testate amoebae (Protist, Rhizopoda) in a stream of the southwestern Amazon basin (Igarapé São Francisco in Acre state, Brazil)

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Amebas testáceas (Arcellinida e Euglyphida) em dois biótopos de um corpo aquático temporário contaminado por dejetos orgânicos: novas ocorrências para o estado da Bahia

Cited by 3 publications

References 31 publications

Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimb&uacute;s, Chapada Diamantina, Bahia state, Brazil, including new occurrences

Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimb&uacute;s, Chapada Diamantina, Bahia state, Brazil, including new occurrences

Microprotozooplankton as eutrophication bioindicator for tropical coastal lagoons

Effects of urbanization on the diversity of testate amoebae (Protist, Rhizopoda) in a stream of the southwestern Amazon basin (Igarapé São Francisco in Acre state, Brazil)

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Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimbús, Chapada Diamantina, Bahia state, Brazil, including new occurrences

Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimbús, Chapada Diamantina, Bahia state, Brazil, including new occurrences