<b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian Amazon
The trophic structure of fish assemblages associated with banks of aquatic macrophytes in abandoned meander lakes on the river Purus is investigated. Comparisons between lakes and between different periods of the hydrological cycle are undertaken. Fish samples were collected in six lakes during the...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2016-07-01
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| Series: | Acta Scientiarum: Biological Sciences |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28973 |
| _version_ | 1811229221333237760 |
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| author | Monik da Silveira Suçuarana Lucena Rocha Virgílio Lisandro Juno Soares Vieira |
| author_facet | Monik da Silveira Suçuarana Lucena Rocha Virgílio Lisandro Juno Soares Vieira |
| author_sort | Monik da Silveira Suçuarana |
| collection | DOAJ |
| description | The trophic structure of fish assemblages associated with banks of aquatic macrophytes in abandoned meander lakes on the river Purus is investigated. Comparisons between lakes and between different periods of the hydrological cycle are undertaken. Fish samples were collected in six lakes during the rainy (February), ebb (May) and dry (September) season in 2012. Fish stomach contents were analyzed by frequency of occurrence and volume methods, combined in the Feeding Index (IAi). Fish species were included in nine trophic categories, based on IAi rates. The richness and abundance of fish species, by trophic category, was influenced by temporal variations, with no significant spatial variation. Some species changed their diets and were included in different trophic categories according to the period and lake under analysis. Specialist species have also been identified, but failed to change their diets. Differences may be due to the characteristics of macrophytes banks and to the flooding regime which change the availability of food resources.
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| first_indexed | 2024-04-12T10:10:48Z |
| format | Article |
| id | doaj.art-36126c764781475b9bb276b46b7b5892 |
| institution | Directory Open Access Journal |
| issn | 1679-9283 1807-863X |
| language | English |
| last_indexed | 2024-04-12T10:10:48Z |
| publishDate | 2016-07-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Biological Sciences |
| spelling | doaj.art-36126c764781475b9bb276b46b7b58922022-12-22T03:37:19ZengUniversidade Estadual de MaringáActa Scientiarum: Biological Sciences1679-92831807-863X2016-07-0138110.4025/actascibiolsci.v38i1.2897313546<b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian AmazonMonik da Silveira Suçuarana0Lucena Rocha Virgílio1Lisandro Juno Soares Vieira2Universidade Federal do AcreUniversidade Federal do AcreUniversidade Federal do AcreThe trophic structure of fish assemblages associated with banks of aquatic macrophytes in abandoned meander lakes on the river Purus is investigated. Comparisons between lakes and between different periods of the hydrological cycle are undertaken. Fish samples were collected in six lakes during the rainy (February), ebb (May) and dry (September) season in 2012. Fish stomach contents were analyzed by frequency of occurrence and volume methods, combined in the Feeding Index (IAi). Fish species were included in nine trophic categories, based on IAi rates. The richness and abundance of fish species, by trophic category, was influenced by temporal variations, with no significant spatial variation. Some species changed their diets and were included in different trophic categories according to the period and lake under analysis. Specialist species have also been identified, but failed to change their diets. Differences may be due to the characteristics of macrophytes banks and to the flooding regime which change the availability of food resources. https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28973dietneotropical ichthyofaunaspatial variationtemporal variation |
| spellingShingle | Monik da Silveira Suçuarana Lucena Rocha Virgílio Lisandro Juno Soares Vieira <b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian Amazon Acta Scientiarum: Biological Sciences diet neotropical ichthyofauna spatial variation temporal variation |
| title | <b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian Amazon |
| title_full | <b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian Amazon |
| title_fullStr | <b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian Amazon |
| title_full_unstemmed | <b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian Amazon |
| title_short | <b>Trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river Purus, brazilian Amazon |
| title_sort | b trophic structure of fish assemblages associated with macrophytes in lakes of an abandoned meander on the middle river purus brazilian amazon |
| topic | diet neotropical ichthyofauna spatial variation temporal variation |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28973 |
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