Preliminary data on the culture of juveniles of the dusky grouper, Epinephelus marginatus (Lowe, 1834)
This study shows preliminary data about the culture of juvenile dusky grouper, Epinephelus marginatus. Twoexperiments were carried out to determine the effects of three salinity levels (35, 27 and 20 psu) and twodifferent temperatures (20 and 26 ºC) on the growth, survival, and feeding parameters of...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | México |
| Institución: | Centro de Investigaciones Biológicas del Noroeste, S.C. |
| Repositorio: | Redalyc-CIBNOR |
| OAI Identifier: | oai:redalyc.org:57813411 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57813411 |
| Access Level: | acceso abierto |
| Palabra clave: | Biología growth Grouper salinity temperature Epinephelus marginatus |
| Sumario: | This study shows preliminary data about the culture of juvenile dusky grouper, Epinephelus marginatus. Twoexperiments were carried out to determine the effects of three salinity levels (35, 27 and 20 psu) and twodifferent temperatures (20 and 26 ºC) on the growth, survival, and feeding parameters of fish raised in concretetanks. Also, growth, feeding efficiency and biometry was studied for seven grams juveniles in a 15 month trials.Results indicated that fish maintained at a salinity of 35 psu grew faster than fish at 20 and 27 psu, andsignificant differences in weight gain, feed conversion ratio, protein efficiency ratio, specific growth rate, andsurvival were obtained between these treatments. Best growth and better feeding parameters were obtainedfor fish at high temperature. Significant differences in feed conversion ratio, protein efficiency ratio andspecific growth rate were obtained between temperature treatments. At the end of the experimental procedurethe final mean weight was 458 g in 15 months. Mean weight gain was 451 g and the feed conversion ratio was1.23. This study also demonstrated a faster growth in culture conditions than in the wild. The results obtainedwere courageous and could be the basis of further studies for the culture of this species. |
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