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Premium 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
Publication year2018
Publication title
aquaculture research
Resource typeJournals
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.
Subject(s)anatomy , biology , botany , ecology , fishery , food science , gonad , ingredient , lactuca , paracentrotus lividus , sea urchin , ulva lactuca , zoology
SCImago Journal Rank0.646

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