Inducción al desove en hembras del pargo mancha, lutjanus guttatus (Steindachner, 1869)
Fecha
1998-01-01
Autores
Valverde-Chavarría, Silvia
Boza Abarca, Jorge
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Nacional [Costa Rica ]
Resumen
Se estudió el efecto del extracto de pituitaria de carpa (EPC) en 6 hembras maduras de pargo mancha, L. guttatus, capturadas con línea por pescadores artesanales en el Golfo de Nicoya. El peso de las hembras varió de 1,7-2,0 Kg. Tres hembras se inyectaron con 800 UI de EPC /kg de peso corporal. Se determinó la distribución de frecuencias de diámetro de los oocitos, así como su estado de madurez ante la aplicación del tratamiento hormonal, así como 24h y 48h después. Dos de las hembras inyectadas desovaron una sola vez, 24 horas después de aplicarles el estímulo hormonal, liberando 115.500-125.500 huevos, con diámetro promedio de 0,724 mn.
The effect of carp pituitary extract (EPC) was studied in six mature females of the spotted snapper, Lutjanus guttatus, caught by bottom long lines by artesanal fishermen in the Nicoya gulf. The female weights were between 1.7 and 2.0 kg. Three females were injected with 800 UI EPC/Kg body weight, the rest were used as a control group. The frequency distribution of oocyte diameters and their maturity status were assessed immediatedly before and 24 h and 48 h after the application of the hormonal treatment. Two of the injected females spawned once, 24 hours after the application of the hormonal stimulus, expelling 115,500-125,500 eggs, with a mean diameter of 0.724 mm.
The effect of carp pituitary extract (EPC) was studied in six mature females of the spotted snapper, Lutjanus guttatus, caught by bottom long lines by artesanal fishermen in the Nicoya gulf. The female weights were between 1.7 and 2.0 kg. Three females were injected with 800 UI EPC/Kg body weight, the rest were used as a control group. The frequency distribution of oocyte diameters and their maturity status were assessed immediatedly before and 24 h and 48 h after the application of the hormonal treatment. Two of the injected females spawned once, 24 hours after the application of the hormonal stimulus, expelling 115,500-125,500 eggs, with a mean diameter of 0.724 mm.
Descripción
Palabras clave
DESOVE, REPRODUCCIÓN, LUTJANUS GUTTATUS, PARGO CON MANCHA, REPRODUCTION, SPOTTED SNAPPER