Academic
Publications
GnRHa-induced spawning with natural fertilization and pilot-scale juvenile mass production of common snook, Centropomus undecimalis (Bloch, 1792)

GnRHa-induced spawning with natural fertilization and pilot-scale juvenile mass production of common snook, Centropomus undecimalis (Bloch, 1792),10.1

GnRHa-induced spawning with natural fertilization and pilot-scale juvenile mass production of common snook, Centropomus undecimalis (Bloch, 1792)  
BibTex | RIS | RefWorks Download
Induced spawning of common snook, Centropomus undecimalis (Bloch, 1792) and scale-up of larval rearing is described. Fertilized eggs were obtained from sGnRHa induced broodstock, acclimatized to captivity under natural conditions, for 5years in 12-m3 fiberglass tanks. Females with 402±15μm diameter vitellogenic oocytes were given an implant dose of 121±31μgkg−1 while males received 83±6μgkg−1. A total of 4.33×106 eggs (18.5% floating) resulted from ten natural voluntary spawns. Two 5-m3 cylindrical fiberglass tanks were stocked at an average of 40floating eggsl−1, which resulted in 14larvael−1 at 2days post hatch (dph). A total of 70,936 juveniles were harvested on 45dph (50.7% survival from first feeding). Two critical periods occurred, between 1 and 2dph, and during transformation (20–23dph). Final mean total length and weight at 46dph were 21.26±2.83mm (0.42mmday−1) and 0.07±0.03g (0.002gday−1). Mean final density and biomass were 7.1juvenilesl−1 and 0.479kgm−3. The incidence of deformities was low, less than 2%, mostly lordosis. Improvements for spawning common snook including changes in feeding regime and GnRHa implant doses are detailed along with suggestions for further improvements in mass production technology.
Journal: Aquaculture , vol. 319, no. 3, pp. 479-483, 2011
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.