Gonadal maturation in
captivity and hormone-induced spawning of the Pacific red snapper Lutjanus
peru
S. Dumas, M.O. Rosales-Velázquez , M.
Contreras-Olguin , D. Hernández-Ceballos, N. Silverberg-2004
Aquaculture, 234(1-4): 615-623
Abstract:
Wild broodstock of the Pacific red snapper Lutjanus
peru, a high value commercial species in Mexico, were brought to the
laboratory to achieve experimentally induced gonadal maturation. Mature
individuals were successfully obtained during three experiments when the
water temperature was increased from about 17–22 °C between March and
May. Mature females showing vitellogenic oocytes with diameters over 400 µm
were injected with human chorionic gonadotropin. A first dose of 500 IU/kg
body weight was administered, followed 24 h later by a second dose of 1000
IU/kg body weight. At the time of the second injection, males were also
injected (500 IU/kg body weight). Fertilized eggs were incubated at 25 °C
and hatching was achieved 28 h later.
(Centro Interdisciplinario de Ciencias Marinas-I.P.N.
(CICIMAR-IPN), Laboratorio de Biología Experimental, Av. I.P.N. s/n, Apdo.
postal 592, 23000, La Paz, Baja California Sur, Mexico, e-mail: silvie@prodigy.net.mx
)