6533b824fe1ef96bd1280bdf
RESEARCH PRODUCT
Experimental rearing of the sea urchinParacentrotus lividusfed with discards of the lettuceLactuca sativain a sea-based system
Salvatrice VizziniAntonio MazzolaGiulia ViscontiAntonino Vaccarosubject
Settore BIO/07 - Ecologia0106 biological sciencesgonad colourgonad indexbiology010604 marine biology & hydrobiologyEchinocultureLactuca04 agricultural and veterinary sciencesAquatic Sciencebiology.organism_classification01 natural sciencesParacentrotus lividusDiscardsFisheryIngredientAnimal sciencesea urchin roebiology.animal040102 fisheries0401 agriculture forestry and fisheriesSea urchindescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-09-18 | Aquaculture Research |