| Journal: | Revista iberoamericana de bioeconomía y cambio climático |
| Database: | PERIÓDICA |
| System number: | 000447795 |
| ISSN: | 2410-7980 |
| Authors: | Hernández Fernández, G.M1 Quintana, B1 Lara, S1 Santamaría, F1 |
| Institutions: | 1Universidad Nacional Autónoma de Nicaragua, León. Nicaragua |
| Year: | 2021 |
| Volumen: | 7 |
| Number: | 14 |
| Pages: | 1766-1780 |
| Country: | Nicaragua |
| Language: | Español |
| Document type: | Artículo |
| Approach: | Aplicado, descriptivo |
| Spanish abstract | El presente trabajo se centro en evaluar la composición de la captura, la diversidad de especies, abundancia relativa y estructura de tallas de tiburones y rayas capturados por la pesca artesanal en las playas de Poneloya y Las Peñitas. Se analizaron los organismos desembarcados durante los meses de mayo a junio. Se registraron las especies capturadas, sitio de la captura, tallas, pesos y condición reproductiva. Se analizaron 216 organismos distribuidos en 7 especies y 6 familias. Siendo la de mayor abundancia el tiburón Sphyrna lewini (67.6 %), seguida de Dasyatis brevis (13 %) y Dasyatis longa (11 %), Rhinoptera steindachneri (3.2), Aetobatus narinari (3.2 %), Gymnura marmorata (1.4 %) y Rhinobatus leucorhynchus (0.5%). Las capturas fueron realizadas con dos artes de pesca, palangre (54.5%) y red agallera (45.5%) con capturas dirigidas hacia peces óseos de alto valor comercial Sphyrna lewini se encontró un 47.3% de hembras, 52% machos y un individuo desconocido (0.7%), el 100% de machos y hembras fueron juveniles por ende se encontraron inmaduros. Dasyatis brevis el 81.5 % fueron hembras y 18.5% machos, encontrándose diferencias significativas en la proporción sexual (X2 = 10.7 P < 0,05). El 80 % de machos fueron inmaduros y el 20% maduros, las hembras el 95% fueron inmaduras y un 5% maduras. Dasyatis longus el 35 % fueron hembras, 52 % machos y 13% individuos desconocidos. El 58% de los machos fueron inmaduros y el 42% maduros, en el caso de las hembras el 62.5% fueron inmaduras y el 37.5% maduras |
| English abstract | The present work focused on evaluating the composition of the catch, the diversity of species, relative abundance and size structure of sharks and rays caught by artisanal fishing on the beaches of Poneloya and Las Peñitas. The organisms landed during the months of May to June were analyzed. The species captured, site of capture, sizes, weights and reproductive condition were recorded. 216 organisms distributed in 7 species and 6 families were analyzed. With the highest abundance being the shark Sphyrna lewini (67.6%), followed by Dasyatis brevis (13%) and Dasyatis longa (11%), Rhinoptera steindachneri (3.2), Aetobatus narinari (3.2%), Gymnura marmorata (1.4%) and Rhinobatus leucorhynchus (0.5%). The catches were made with two fishing gear, longline (54.5%) and gillnet (45.5%) with catches directed towards bony fish of high commercial value Sphyrna lewini, 47.3% female, 52% male and one unknown individual ( 0.7%), 100% of males and females were juveniles, therefore they were immature. Dasyatis brevis 81.5% were female and 18.5% male, finding significant differences in the sexual proportion (X2 = 10.7 P <0.05). 80% of the males were immature and 20% mature, the females 95% were immature and 5% were mature. Dasyatis longus 35% were female, 52% male and 13% unknown individuals. 58% of the males were immature and 42% were mature; in the case of the females, 62.5% were immature and 37.5% were mature |
| Disciplines: | Medicina veterinaria y zootecnia |
| Keyword: | Pesca, Pesca artesanal, Composición de la captura, Abundancia relativa, Distribución por talla, Tiburones, Rayas, Elasmobranchii, Nicaragua |
| Keyword: | Fishing, Artisanal fishing, Catch composition, Relative abundance, Size distribution, Sharks, Rays, Elasmobranchii, Nicaragua |
| Full text: | Texto completo (Ver PDF) |
