A comparative study of the acute toxicity of the herbicide atrazine to cladocerans Daphnia magna, Ceriodaphnia silvestrii and Macrothrix flabelligera

Moreira, Raquel Aparecida; Mansano, Adrislaine da Silva; Silva, Lidiane Cristina da

doi:10.1590/s2179-975x2014000100002

Cited by 36 publications

(21 citation statements)

References 29 publications

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“…Among the main groups of aquatic organisms, zooplankton stands out for being able to react quickly to environmental and toxicological changes (Moreira et al, 2014;Vieira et al, 2011). In this sense, the zooplankton can be used as variable for environmental monitoring because, in addition to responding human impacts, it plays an important role in nutrient cycling and energy flow of food webs (Gagneten & Paggi, 2009;Oberhaus et al, 2007;Vieira et al, 2011).…”

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Is it possible to simplify environmental monitoring? Approaches with zooplankton in a hydroelectric reservoir

et al. 2017

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Cite as: Missias, A.C.A. et al. Is it possible to simplify environmental monitoring? Approaches with zooplankton in a hydroelectric reservoir. Acta Limnologica Brasiliensia, 2017, vol. 29, e8. Abstract: Aim:In order to contribute to the knowledge about the simplification of biological surveys, this study evaluated the use of substitute groups, numeric and taxonomic resolution for the three main groups of zooplankton (cladocerans, copepods and rotifers) in a Hydropower Plant (UHE). The following issues were addressed: (i) the patterns of spatial and/or temporal ordering generated between each zooplankton group are in concordance? (ii) The concordance is maintained using presence/absence data instead of density data? (iii) The identification of organisms to the species level can be replaced by genus or family level? Methods: Samples were taken in seven sample units over five campaigns between 2009 and 2010 in the UHE Serra da Mesa (Goiás, Brazil). To evaluate the correlation between each pair of matrices was used the Mantel test. Results: The results demonstrate that the replacements should not be made among the zooplanktonic groups, requiring the monitoring of three groups (copepods, cladocerans and rotifers). Furthermore, the results suggest the use of density data of individuals rather than just presence/absence of species. Finally, the results of this study indicate the possibility to use data at species level instead of data at genus or family level. Conclusion: For zooplankton community monitoring purposes only the use of taxonomic resolution showed to be efficient for this area of study, not being recommended the use of surrogate groups or numerical resolution.

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Is it possible to simplify environmental monitoring? Approaches with zooplankton in a hydroelectric reservoir

et al. 2017

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“…De modo geral, para Daphnia magna, a concentração efetiva média (CE 50 ) -baseada na mortalidade de 50% dos indivíduos expostos -obtida neste estudo para os três agrotóxicos difere dos resultados encontrados em outros estudos (MOREIRA et al, 2014;BASTOS, 2013;IEROMINA et al, 2014;FREITAS;ROCHA, 2012;SARI-GUL;BEKCAN, 2009). Isso corrobora o fato de que a utilização de agrotóxicos de marcas comerciais distintas proporciona diferentes resultados.…”

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“…A CE 50 obtida foi de 8,1 mg L -1 , podendo-se afirmar que é moderadamente tóxico, conforme classificação de toxicidade aguda de agroquímicos para organismos aquáticos proposta por segundo Zucker (1985). Em estudos conduzidos por Moreira et al (2014), foi obtido o valor de 50,4 mg L -1 para o mesmo princípio ativo, porém a marca comercial utilizada foi o herbicida atrazina Atanor SC ® . Utilizando o mesmo microcrustáceo, encontrou-se também na literatura uma CE 50 para a atrazina de 26,9 mg L -1 (FREITAS; ROCHA, 2012).…”

Section: Classe De Toxicidade Ce 50 (Mg L -1 )unclassified

Toxicidade Determinada Pelo Uso Dos Agrotóxicos Em Organismos Indicadores De Qualidade Da Água

Nascimento

Naval

2020

Rev. Bras. Ciênc. Ambient. (Online)

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A expansão das fronteiras agrícolas tem promovido o aumento de áreascultivadas e uso de agrotóxicos, e inquietações quanto ao destino destestem sido manifestadas, sobretudo pela exposição a que são submetidos oscorpos hídricos. Admitindo-se a preocupação, objetivou-se avaliar o graude toxicidade, determinado pelo uso dos agrotóxicos glifosato, atrazina eimidacloprido, em organismos indicadores de qualidade da água. Para isso,realizaram-se testes de sensibilidade e definitivos empregando-se dafinídeos(Daphnia magna). Os testes de sensibilidade apresentaram concentraçãoefetiva (CE50) de 0,77 mg.L-1, atestando sua utilização e o preconizado pelaISO 6341. Para os testes definitivos e concentrações testadas, foi encontradaCE50 para o glifosato de 27,4 mg.L-1, para a atrazina CE50 de 8,1 mg.L-1 e parao imidacloprido 217,1 mg.L-1. Como efeito deletério, observou-se que, apósos testes, os organismos imóveis apresentaram deformações nas carapaçase no tubo digestivo. Entre as propriedades mais agressivas dos agrotóxicos,destacou-se sua miscibilidade.

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“…Further research is needed focusing on the taxonomy and ecology of microcrustaceans of more regions in order to reduce biodiversity loss and improve conservation measures in continental aquatic habitats. In addition, as microcrustaceans can be used in environmental biomonitoring and ecotoxicological studies (Silva, 2011;Moreira et al, 2014), increasing the number of biodiversity studies could further improve this field of knowledge.…”

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Distribution of planktonic microcrustaceans (Cladocera and Copepoda) in lentic and lotic environments from the semiarid region in northeastern Brazil

Diniz

Júnior

Medeiros

et al. 2020

Iheringia, Sér. Zool.

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Abstract The present study aimed to inventory the biodiversity of planktonic microcrustaceans (Cladocera and Copepoda) in 44 environments from the semiarid region of Brazil, increasing the knowledge about zooplankton community, including phytophilous species. Between 2011 and 2017, organisms were collected in a non - systematic way in the states of Rio Grande do Norte, Pernambuco, Ceará and Paraíba. A total of 60 species of planktonic microcrustaceans were identified, of which 52 were cladocerans and eight were copepods. The basin that presented the highest richness was Pajeú River with 41 species. Nevertheless, the extrapolated number of species shows an increasing tendency for this basin. The genus composition was different between the basins, with Moxotó basin (Pernambuco) being isolated from the others, probably since lagoons were the only type of environment sampled in this basin. Richness and abundance patterns were higher for the basins where sampling was mainly performed in lentic environments, such as Pajeú and Moxotó. Microcrustacean inventories and long-term studies need to be conducted more frequently to better understand the biodiversity of continental aquatic ecosystems in the semiarid region of Brazil.

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A comparative study of the acute toxicity of the herbicide atrazine to cladocerans Daphnia magna, Ceriodaphnia silvestrii and Macrothrix flabelligera

Cited by 36 publications

References 29 publications

Is it possible to simplify environmental monitoring? Approaches with zooplankton in a hydroelectric reservoir

Is it possible to simplify environmental monitoring? Approaches with zooplankton in a hydroelectric reservoir

Toxicidade Determinada Pelo Uso Dos Agrotóxicos Em Organismos Indicadores De Qualidade Da Água

Distribution of planktonic microcrustaceans (Cladocera and Copepoda) in lentic and lotic environments from the semiarid region in northeastern Brazil

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