Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil
This study investigated the migratory fish spawning within the reservoirs of the Machadinho and Itá dams (upper Uruguay River, Brazil) and its relationship to environmental variables. Sampling was conducted in the lotic region of the river in two sites between the dams' reservoirs: Uruguay (mai...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400016&lng=en&tlng=en |
| _version_ | 1818066562117009408 |
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| author | David A. Reynalte-Tataje Alex P. O. Nuñer Michele C. Nunes Valquíria Garcia Carolina A. Lopes Evoy Zaniboni-Filho |
| author_facet | David A. Reynalte-Tataje Alex P. O. Nuñer Michele C. Nunes Valquíria Garcia Carolina A. Lopes Evoy Zaniboni-Filho |
| author_sort | David A. Reynalte-Tataje |
| collection | DOAJ |
| description | This study investigated the migratory fish spawning within the reservoirs of the Machadinho and Itá dams (upper Uruguay River, Brazil) and its relationship to environmental variables. Sampling was conducted in the lotic region of the river in two sites between the dams' reservoirs: Uruguay (main river) and Ligeiro (tributary). Sampling included nine consecutive reproductive periods (RP) spanning the period from 2001 to 2010 and was conducted at night on the water surface using cylindrical-conical plankton nets (0.5 mm mesh); environmental variables were also recorded. The spawning of the migratory species Salminus brasiliensis, Prochilodus lineatus, and Steindachneridion scriptum was registered: S. brasiliensis and P. lineatus spawned in the tributary river at the end of spring/beginning of summer, during flooding and during periods of high water temperature. Steindachneridion scriptum spawned in the main river at the beginning of spring. The study showed that S. brasiliensis, P. lineatus, and S. scriptum are able to spawn in small lotic river stretches within two reservoirs, but only under very specific and not common environmental conditions. |
| first_indexed | 2024-12-10T15:09:45Z |
| format | Article |
| id | doaj.art-04310b319f29489384de28102584f4e5 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-10T15:09:45Z |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-04310b319f29489384de28102584f4e52022-12-22T01:43:57ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-022410482983510.1590/S1679-62252012000400016S1679-62252012000400016Spawning of migratory fish species between two reservoirs of the upper Uruguay River, BrazilDavid A. Reynalte-Tataje0Alex P. O. Nuñer1Michele C. Nunes2Valquíria Garcia3Carolina A. Lopes4Evoy Zaniboni-Filho5Universidade Federal de Santa CatarinaUniversidade Federal de Santa CatarinaUniversidade Federal de Santa CatarinaUniversidade Federal de Santa CatarinaUniversidade Federal de Santa CatarinaUniversidade Federal de Santa CatarinaThis study investigated the migratory fish spawning within the reservoirs of the Machadinho and Itá dams (upper Uruguay River, Brazil) and its relationship to environmental variables. Sampling was conducted in the lotic region of the river in two sites between the dams' reservoirs: Uruguay (main river) and Ligeiro (tributary). Sampling included nine consecutive reproductive periods (RP) spanning the period from 2001 to 2010 and was conducted at night on the water surface using cylindrical-conical plankton nets (0.5 mm mesh); environmental variables were also recorded. The spawning of the migratory species Salminus brasiliensis, Prochilodus lineatus, and Steindachneridion scriptum was registered: S. brasiliensis and P. lineatus spawned in the tributary river at the end of spring/beginning of summer, during flooding and during periods of high water temperature. Steindachneridion scriptum spawned in the main river at the beginning of spring. The study showed that S. brasiliensis, P. lineatus, and S. scriptum are able to spawn in small lotic river stretches within two reservoirs, but only under very specific and not common environmental conditions.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400016&lng=en&tlng=enIchthyoplanktonTemporal distributionWater flowWater temperature |
| spellingShingle | David A. Reynalte-Tataje Alex P. O. Nuñer Michele C. Nunes Valquíria Garcia Carolina A. Lopes Evoy Zaniboni-Filho Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil Neotropical Ichthyology Ichthyoplankton Temporal distribution Water flow Water temperature |
| title | Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil |
| title_full | Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil |
| title_fullStr | Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil |
| title_full_unstemmed | Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil |
| title_short | Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil |
| title_sort | spawning of migratory fish species between two reservoirs of the upper uruguay river brazil |
| topic | Ichthyoplankton Temporal distribution Water flow Water temperature |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400016&lng=en&tlng=en |
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