Producción de larvas y postlarvas del erizo verdiblanco del Caribe Lytechinus Variegatus (Echinodermata: Echinoidea) en condiciones de cultivo / Larvae and postlarvae production of the green-white sea urchin Lytechinus variegatus (Echinodermata: Echinoidea) in culture conditions
Rev. biol. trop
;
53(supl.3): 319-328, dic. 2005. ilus, graf
Artículo
en Español
| LILACS
| ID: lil-454832
ABSTRACT
We evaluated the biological feasibility of massive larvae and postlarvae production of the Caribbean green-white urchin Lytechinus variegatus. Experiments were designed to choose the initial larval density and microalgae diets under culture, to study metamorphosis, postlarval and juvenile growth. Massive production of competent larvae 650 microm long at 12-13 days is possible using larval densities of 0.25 to 1 larva/ml. The microalgae Rhodomonas sp. was suitable for the optimization of larval growth and survival. Metamorphosis of 100% of the larvae can be induced with films of bentic diatoms (Navicula sp. and Amphora sp.), after 96 h; however, diatoms are not adequate for postlarval development and a food supply of Ulva lactuta is necessary for proper growth. For juveniles, a diet of macroalgae (U. lactuta) and/or commercial marine shrimp culture pellet food is enough for growth, but the best results were obtained with shrimp or U. lactuta used alone (85-86%, against 46% with the mixed diet). We recommend future experiments on nutritional requirements to optimize growth of these and subsequent stages
Buscar en Google
Índice:
LILACS (Américas)
Asunto principal:
Lytechinus
/
Chlorophyta
Límite:
Animales
Idioma:
Español
Revista:
Rev. biol. trop
Asunto de la revista:
Biologia
/
Medicina Tropical
Año:
2005
Tipo del documento:
Artículo
País de afiliación:
Venezuela
Institución/País de afiliación:
Fundación La Salle de Ciencias Naturales/VE
/
Universidad de Oriente/VE
Similares
MEDLINE
...
LILACS
LIS