Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil
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Universidad de Costa Rica
2007
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| Online Access: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5974 |
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RBT59742023-03-16T16:19:11Z Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil Menezes, M.S. Caramaschi, E.P. Curimatidae distribución estructura de población proporción de sexos río Paraíba do Sul jóvenes distribution population structure sex ratio Paraíba do Sul River juveniles The distribution and population structure of Cyphocharax gilbert in four areas of the lower Paraíba do Sul River and its major tributaries (22°S, 43°W) were analyzed between March 1989 and February 1990. The species was common throughout the area, preferring major rivers with high turbidity and sand-mud substrates and range of length and size of specimens found varied depending on the particular characteristics of the site. A predominance of females was found in only area. Nevertheless, in all areas the bimonthly analysis showed preponderance of one of the sexes in periods before or after spawning. Males prevailed in shorter length classes and females in longer ones. There was a prevalence of young in one area that probably was used as a growth and feeding zone. Universidad de Costa Rica 2007-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5974 10.15517/rbt.v55i3-4.5974 Revista de Biología Tropical; Vol. 55 No. 3-4 (2007): Volume 55 – Regular number 3-4 – September-December 2007; 1015–1023 Revista de Biología Tropical; Vol. 55 Núm. 3-4 (2007): Volumen 55 – Número regular 3-4 – Setiembre-Diciembre 2007; 1015–1023 Revista Biología Tropical; Vol. 55 N.º 3-4 (2007): Volume 55 – Regular number 3-4 – September-December 2007; 1015–1023 2215-2075 0034-7744 10.15517/rbt.v55i3-4 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5974/5681 Copyright (c) 2007 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Menezes, M.S. Caramaschi, E.P. |
| spellingShingle |
Menezes, M.S. Caramaschi, E.P. Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil |
| author_facet |
Menezes, M.S. Caramaschi, E.P. |
| author_sort |
Menezes, M.S. |
| title |
Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil |
| title_short |
Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil |
| title_full |
Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil |
| title_fullStr |
Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil |
| title_full_unstemmed |
Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil |
| title_sort |
distribution and population structure of the fish cyphocharax gilbert (characiformes: curimatidae) in the lower paraíba do sul river, brazil |
| title_alt |
Distribution and population structure of the fish Cyphocharax gilbert (Characiformes: Curimatidae) in the Lower Paraíba do Sul River, Brazil |
| publisher |
Universidad de Costa Rica |
| publishDate |
2007 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5974 |
| work_keys_str_mv |
AT menezesms distributionandpopulationstructureofthefishcyphocharaxgilbertcharaciformescurimatidaeinthelowerparaibadosulriverbrazil AT caramaschiep distributionandpopulationstructureofthefishcyphocharaxgilbertcharaciformescurimatidaeinthelowerparaibadosulriverbrazil |
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