Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica
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Universidad Nacional, Costa Rica
2018
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| Acceso en línea: | https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/10666 |
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UNICIENCIA106662019-08-27T15:45:47Z Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica Parámetros poblacionales y hábitos alimenticios del pargo mancha (Lutjanus guttatus) en el Área Marina de Pesca Responsable Paquera-Tambor, golfo de Nicoya, Costa Rica Soto-Rojas, Rosa Lidia Hernández-Noguera, Luis Adrián Vega-Alpízar, Jose Luis Lutjanus guttatus snapper Gulf of Nicoya population parameters feeding habits Lutjanus guttatus pargo golfo de Nicoya parámetros poblacionales hábitos alimenticios Spotted rose snapper (Lutjanus guttatus) is one of the most important commercial fish species caught in the Gulf of Nicoya; as a consequence, it has for many years been under heavy fishing pressure, mainly from a fleet of artisanal fishermen. From April 2015 to April 2016, a total of 1,109 specimens were analyzed to learn more about biological aspects and population dynamics of the stock distributed in the Paquera-Tambor Marine Area for Responsible Fishing (Paquera-Tambor MARF). Data gathered on the total length-weight relationship of the individuals in the sample showed that this species has negative allometric growth, and that the population consists of four cohorts. Mean size at first sexual maturity was estimated at 30 cm total length, and two maximum reproduction periods were estimated, the first from May to August, and the second from October to November. The estimated growth parameters were L∞ = 65 cm total length, K = 0.32 annually, and t0 = -0.42. Mortality rates were estimated to be M = 0.68; F = 2.38; and Z = 3.06. The exploitation rate (E = 0.77) shows that the population is over-exploited. Stomach content analysis suggests that the population is made up of generalist feeders with preferences for crustaceans and fish. El pargo mancha Lutjanus guttatus es una de las especies de peces de mayor importancia comercial capturada en el Golfo de Nicoya, que desde hace muchos años ha venido sufriendo una fuerte presión pesquera, principalmente, por la flota artesanal. De abril del 2015 a abril del 2016, se analizaron 1109 especímenes, con el fin de conocer algunos aspectos biológico pesqueros de la población que se distribuye en el Área Marina de Pesca Responsable Paquera-Tambor en este golfo. La relación longitud total-peso total indica que esta especie posee un crecimiento alométrico negativo; tal población está conformada por cuatro cohortes. La talla media de primera madurez sexual se estimó en 30 cm de longitud total y se determinaron dos periodos máximos de reproducción: el primero de mayo a agosto y el segundo de octubre a noviembre. Los parámetros de crecimiento estimados fueron L∞ = 65 cm de longitud total, K = 0,32 anual y to = -0,42. Las tasas de mortalidad estimadas fueron M = 0,68, F = 2,38; Z = 3,06 y E = 0,77, indicando esta última que la población se encuentra sobreexplotada. Los análisis de hábitos alimenticios sugieren que esta población es generalista con preferencias por crustáceos y peces. Universidad Nacional, Costa Rica 2018-07-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Papers evaluated by academic peers Artículos evaluados por pares académicos application/pdf text/html https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/10666 10.15359/ru.32-2.7 Uniciencia; Vol. 32 No. 2 (2018): Uniciencia. July-December, 2018; 96-110 Uniciencia; Vol. 32 Núm. 2 (2018): Uniciencia. Julio - Diciembre, 2018; 96-110 Uniciencia; v. 32 n. 2 (2018): Uniciencia. July-December, 2018; 96-110 2215-3470 spa https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/10666/13237 https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/10666/13238 |
| institution |
Universidad Nacional de Costa Rica |
| collection |
Uniciencia |
| language |
spa |
| format |
Online |
| author |
Soto-Rojas, Rosa Lidia Hernández-Noguera, Luis Adrián Vega-Alpízar, Jose Luis |
| spellingShingle |
Soto-Rojas, Rosa Lidia Hernández-Noguera, Luis Adrián Vega-Alpízar, Jose Luis Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica |
| author_facet |
Soto-Rojas, Rosa Lidia Hernández-Noguera, Luis Adrián Vega-Alpízar, Jose Luis |
| author_sort |
Soto-Rojas, Rosa Lidia |
| title |
Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica |
| title_short |
Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica |
| title_full |
Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica |
| title_fullStr |
Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica |
| title_full_unstemmed |
Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica |
| title_sort |
population parameters and feeding habits of spotted rose snapper (lutjanus guttatus) in the paquera-tambor marine area for responsible fishing of the gulf of nicoya, costa rica |
| title_alt |
Parámetros poblacionales y hábitos alimenticios del pargo mancha (Lutjanus guttatus) en el Área Marina de Pesca Responsable Paquera-Tambor, golfo de Nicoya, Costa Rica |
| publisher |
Universidad Nacional, Costa Rica |
| publishDate |
2018 |
| url |
https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/10666 |
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