Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern Brazil
In this study we analyze the temporal variability in the density and the size classes of the Corbicula fluminea (Müller, 1774) at Poxim-Açu River, northeastern Brazil. Densities ranged from 60 ± 103 to 500 ± 240 individual m-², but this variability was not statistically significant. There was no si...
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Universidade Estadual de Maringá
2025-04-01
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| Series: | Acta Scientiarum: Biological Sciences |
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| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/72497 |
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| author | Leonardo Cruz da Rosa José Oliveira Dantas |
| author_facet | Leonardo Cruz da Rosa José Oliveira Dantas |
| author_sort | Leonardo Cruz da Rosa |
| collection | DOAJ |
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In this study we analyze the temporal variability in the density and the size classes of the Corbicula fluminea (Müller, 1774) at Poxim-Açu River, northeastern Brazil. Densities ranged from 60 ± 103 to 500 ± 240 individual m-², but this variability was not statistically significant. There was no significant relationship between densities and water parameters (depth and flow). The population was mainly composed of young individuals, with 10-14 mm of shell length. Lower densities and predominance of juveniles suggest a recent invasion event. However, C. fluminea was firstly recorded at Poxim-Açu River three years before this study. Thus, these results might reflect a mortality followed by a reinvasion event. A continuous monitoring program is needed to better evaluate whether this population is growing and spreading as well as to determine which environmental variables could be driving the temporal variability of this species.
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| format | Article |
| id | doaj-art-2ef2b65f8ecb4464bebf46f1d8f7997d |
| institution | DOAJ |
| issn | 1679-9283 1807-863X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Biological Sciences |
| spelling | doaj-art-2ef2b65f8ecb4464bebf46f1d8f7997d2025-08-20T03:10:41ZengUniversidade Estadual de MaringáActa Scientiarum: Biological Sciences1679-92831807-863X2025-04-0147110.4025/actascibiolsci.v47i1.72497Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern BrazilLeonardo Cruz da Rosa0José Oliveira Dantas1Universidade Federal de SergipeInstituto Federal de Educação, Ciência e Tecnologia de Sergipe In this study we analyze the temporal variability in the density and the size classes of the Corbicula fluminea (Müller, 1774) at Poxim-Açu River, northeastern Brazil. Densities ranged from 60 ± 103 to 500 ± 240 individual m-², but this variability was not statistically significant. There was no significant relationship between densities and water parameters (depth and flow). The population was mainly composed of young individuals, with 10-14 mm of shell length. Lower densities and predominance of juveniles suggest a recent invasion event. However, C. fluminea was firstly recorded at Poxim-Açu River three years before this study. Thus, these results might reflect a mortality followed by a reinvasion event. A continuous monitoring program is needed to better evaluate whether this population is growing and spreading as well as to determine which environmental variables could be driving the temporal variability of this species. https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/72497density; size class; non-indigenous species; mollusks; freshwater. |
| spellingShingle | Leonardo Cruz da Rosa José Oliveira Dantas Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern Brazil Acta Scientiarum: Biological Sciences density; size class; non-indigenous species; mollusks; freshwater. |
| title | Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern Brazil |
| title_full | Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern Brazil |
| title_fullStr | Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern Brazil |
| title_full_unstemmed | Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern Brazil |
| title_short | Temporal variability of the invasive Asian clam Corbicula fluminea (Müller, 1774) in the Poxim-Açu River, northeastern Brazil |
| title_sort | temporal variability of the invasive asian clam corbicula fluminea muller 1774 in the poxim acu river northeastern brazil |
| topic | density; size class; non-indigenous species; mollusks; freshwater. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/72497 |
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