TitleInduced spawning of the common snook (Centropomus undecimalis) in captivity using GnRH-a implants
Publication TypeJournal Article
Year of Publication2015
AuthorsM. Contreras-García, deJesus, Contreras-Sánchez, WM, Hernández-Vidal, U, Mcdonald-Vera, A
JournalEcosistemas y Recursos Agropecuarios
Pagination357 - 362
Date Published2015
Keywordscentropomus undecimalis, gnrh-a, induction to spawning, quality eggs, snook

Culture of C. undecimalis shows great potential as this species tolerates handling and adapts easily to captivity. However, the difficulty in achieving spawning in captivity is a major obstacle for the development of commercial scale farming. Spawning of common snook was achieved using GnRH-a implants in single 100 and 200 µg doses per fish; control group specimens received no hormone and did not spawn. Both GnRH-a trial doses resulted in spawning with up to 100% fertilization rates per experimental unit, and a range of 60 – 76% per treatment. A 50 – 100% hatching rate was obtained and larvae were between 1.56 ± 0.08 and 1.98 ± 0.05 mm total length after yolk sac absorption.

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