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| Camargo, Nilce Svarcz Jungles de; Lehun, Atsler Luana; Rosa, Jonathan; Bueno-Krawczyk, Ana Carolina de Deus. |
| The objective of this research was to validate the colonization process on natural and artificial substrates by benthic invertebrates in a tropical stream in South Brazil. The samples were performed in July and August-2012, and 32 samplers were used, being 16 natural and 16 artificial substrates. In each sample, two replicas were taken for each substrate at the 2th, 4th, 7th, 14th, 21th 28th, 35th and 42th days of colonization. The organisms were identified to the lowest possible taxonomic level. In both substrates 3,070 benthic invertebrates were detected, of which 1,753 individuals were collected on the natural substrate, and 1,317 on the artificial substrate. From the identified taxa 8.5% were not dominant (Anacroneuria, Orthocladiinae, Tupiara,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community structure; Diversity; Tropical stream; Limnology; Simulium. Community structure; Diversity; Tropical stream; Limnology; Simulium.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45872 |
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| Melo-Silva, Merieli; Oliveira, Felipe Rafael; Rosa, Jonathan; Gemelli, Emanuelli; Santos, Lilian; Bueno-Krawczyk, Ana Carolina de Deus. |
| Most changes in water bodies are result of human activities that have the potential to undermine the environmental integrity of aquatic ecosystems. Changes in genetic material can be evidenced by the frequency of nuclear abnormalities in fish blood cells, in response to genotoxic agents even at low concentrations. Thus, we aimed at comparing the frequencies of nuclear abnormalities of fish kept in acclimation, with fish collected in Timbó river (Santa Cruz do Timbó, Santa Catarina State), under low anthropogenic interference, and fish collected in Iguaçu river (União da Vitória, Paraná State), a polluted river. The highest frequency of changes in nuclear morphology of fish erythrocytes was found in the urbanized area around the Iguaçu river, while, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Micronucleus; Ecotoxicology; Mutagenesis; Pollution. Mutagênese. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/40669 |
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