Aspectos biometricos del bagre Arius Furthii Steindachner (Pisces Ariidae), colectado en punta Morales, Golfo de Nicoya, Costa Rica
Fecha
1984-07
Autores
Protti Quesada, Maurizio
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Editor
Universidad Nacional (Costa Rica)
Resumen
Se analizan estadísticamente algunos parámetros biométricos de 257 ejemplares de Arius furthii (Ariidae), colectados en una zona de playa y otra de manglar en Punta Morales, Puntarenas, Costa Rica.
Las colectas se realizaron por medio de “arrastres” con una red tipo “chinchorro”.
La talla de los especímenes capturados osciló entre 55 y 276 mm de longitud total y 1,3 a 176 g en peso fresco.
El análisis estadístico mostró que la longitud total es la mejor variable para la estimación del peso fresco a través de una ecuación de regresión logarítmica. Además, se mostró que no existen diferencias significativas en el peso de los Arius furthii colectados en la playa y los colectados en el manglar.
Some biometric parameters of 257 specimens of Arius furthii (Ariidae), collected in a beach area and a mangrove area in Punta Morales, Puntarenas, Costa Rica are statistically analyzed. The collections were made by means of "dragging" with a "chinchorro" type net. The length of the captured specimens ranged between 55 and 276 mm in total length and 1.3 to 176 g in fresh weight. Statistical analysis showed that total length is the best variable for estimating fresh weight through a logarithmic regression equation. In addition, it was shown that there are no significant differences in the weight of Arius furthii collected on the beach and those collected in the mangrove swamp.
Some biometric parameters of 257 specimens of Arius furthii (Ariidae), collected in a beach area and a mangrove area in Punta Morales, Puntarenas, Costa Rica are statistically analyzed. The collections were made by means of "dragging" with a "chinchorro" type net. The length of the captured specimens ranged between 55 and 276 mm in total length and 1.3 to 176 g in fresh weight. Statistical analysis showed that total length is the best variable for estimating fresh weight through a logarithmic regression equation. In addition, it was shown that there are no significant differences in the weight of Arius furthii collected on the beach and those collected in the mangrove swamp.
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Palabras clave
BAGRE, PECES, BIOMETRIA, BIOMETRY, FISH, GOLFO DE NICOYA (COSTA RICA)