Small-sized specimens (test diameter: 16.64 ± 0.93 mm, mean ± SE) of the sea urchin Paracentrotus lividus were fed with fresh discards of the lettuce Lactuca sativa during a 24-week experiment in a sea-based system. At the end of the experiment, stock survival was high (88.8 ± 6.6%). Sea urchin test diameter and total weight grew by 35% and 56%, respectively, while gonad somatic index, after an initial decrease, increased by 3.2%. Moreover, more than 90% of specimens achieved the gonad colour that the market demands. These results support the exploitation of L. sativa as the main ingredient in a manufactured diet for echinoculture of P. lividus. Employing diets formulated with discard ingredients, combined with a low-cost sea-based rearing system, could be a suitable approach for sustainable management of echinoculture.

Vizzini, S., Visconti, G., Vaccaro, A., Mazzola, A. (2018). Experimental rearing of the sea urchin Paracentrotus lividus fed with discards of the lettuce Lactuca sativa in a sea-based system. AQUACULTURE RESEARCH, 49(2), 631-636 [10.1111/are.13492].

Experimental rearing of the sea urchin Paracentrotus lividus fed with discards of the lettuce Lactuca sativa in a sea-based system

Vizzini, Salvatrice;Visconti, Giulia;Vaccaro, Antonino;Mazzola, Antonio
2018-01-01

Abstract

Small-sized specimens (test diameter: 16.64 ± 0.93 mm, mean ± SE) of the sea urchin Paracentrotus lividus were fed with fresh discards of the lettuce Lactuca sativa during a 24-week experiment in a sea-based system. At the end of the experiment, stock survival was high (88.8 ± 6.6%). Sea urchin test diameter and total weight grew by 35% and 56%, respectively, while gonad somatic index, after an initial decrease, increased by 3.2%. Moreover, more than 90% of specimens achieved the gonad colour that the market demands. These results support the exploitation of L. sativa as the main ingredient in a manufactured diet for echinoculture of P. lividus. Employing diets formulated with discard ingredients, combined with a low-cost sea-based rearing system, could be a suitable approach for sustainable management of echinoculture.
2018
Settore BIO/07 - Ecologia
Vizzini, S., Visconti, G., Vaccaro, A., Mazzola, A. (2018). Experimental rearing of the sea urchin Paracentrotus lividus fed with discards of the lettuce Lactuca sativa in a sea-based system. AQUACULTURE RESEARCH, 49(2), 631-636 [10.1111/are.13492].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/298513
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