Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith
ABSTRACT The streaked prochilod, Prochilodus lineatus, represents the most important fishery in the La Plata Basin (South America). Our objective was to analyze brackish environment use by the streaked prochilod captured from Paraná and Uruguay rivers. To accomplish this, lapillus otolith sections w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2017-08-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300202&lng=en&tlng=en |
| _version_ | 1818944159087591424 |
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| author | Esteban Avigliano Jorge Pisonero Alejandro Dománico Sebastián Sánchez Alejandra V. Volpedo |
| author_facet | Esteban Avigliano Jorge Pisonero Alejandro Dománico Sebastián Sánchez Alejandra V. Volpedo |
| author_sort | Esteban Avigliano |
| collection | DOAJ |
| description | ABSTRACT The streaked prochilod, Prochilodus lineatus, represents the most important fishery in the La Plata Basin (South America). Our objective was to analyze brackish environment use by the streaked prochilod captured from Paraná and Uruguay rivers. To accomplish this, lapillus otolith sections were analyzed for Sr:Ca with laser ablation-inductively coupled plasma-mass spectrometry (LA ICP-MS) to infer habitat use of fish. To the interpretation of transects, a threshold that represents the transition between freshwater and brackish environments was calculated using the Sr:Ca ratio of the otolith edge of specimens captured in the first section of the La Plata Estuary (salinity ≥ 0.5 PSU). The percentage of fish using the estuary was higher in the Paraná (37%) than the Uruguay River (5%). Change-point analysis showed that fish entered the estuary between 1 and 3 times throughout life at a wide range of ages (0-15 years). These incursions had no obvious periodicity. This information should be integrated into future management actions, which should also be specific to each area since migration patterns differ between the major rivers of the basin. |
| first_indexed | 2024-12-20T07:38:47Z |
| format | Article |
| id | doaj.art-5c38af488e8547559fd27c887caea9ed |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-20T07:38:47Z |
| publishDate | 2017-08-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-5c38af488e8547559fd27c887caea9ed2022-12-21T19:48:12ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242017-08-0115310.1590/1982-0224-20170055S1679-62252017000300202Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolithEsteban AviglianoJorge PisoneroAlejandro DománicoSebastián SánchezAlejandra V. VolpedoABSTRACT The streaked prochilod, Prochilodus lineatus, represents the most important fishery in the La Plata Basin (South America). Our objective was to analyze brackish environment use by the streaked prochilod captured from Paraná and Uruguay rivers. To accomplish this, lapillus otolith sections were analyzed for Sr:Ca with laser ablation-inductively coupled plasma-mass spectrometry (LA ICP-MS) to infer habitat use of fish. To the interpretation of transects, a threshold that represents the transition between freshwater and brackish environments was calculated using the Sr:Ca ratio of the otolith edge of specimens captured in the first section of the La Plata Estuary (salinity ≥ 0.5 PSU). The percentage of fish using the estuary was higher in the Paraná (37%) than the Uruguay River (5%). Change-point analysis showed that fish entered the estuary between 1 and 3 times throughout life at a wide range of ages (0-15 years). These incursions had no obvious periodicity. This information should be integrated into future management actions, which should also be specific to each area since migration patterns differ between the major rivers of the basin.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300202&lng=en&tlng=enConnectivityFreshwater residentLaser ablationRiver migrationStreaked prochilod |
| spellingShingle | Esteban Avigliano Jorge Pisonero Alejandro Dománico Sebastián Sánchez Alejandra V. Volpedo Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith Neotropical Ichthyology Connectivity Freshwater resident Laser ablation River migration Streaked prochilod |
| title | Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith |
| title_full | Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith |
| title_fullStr | Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith |
| title_full_unstemmed | Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith |
| title_short | Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith |
| title_sort | migration and brackish environment use of prochilodus lineatus characiformes prochilodontidae inferred by sr ca ratio transects of otolith |
| topic | Connectivity Freshwater resident Laser ablation River migration Streaked prochilod |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300202&lng=en&tlng=en |
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