Abstract
This study provides information on biological (gonadosomatic index), commercial quality (condition index and meat yield) and biochemical aspects (proximate composition, fatty acids) of the soft tissues of Flexopecten glaber reared in suspended cages in the Ionian Sea. The results showed that condition index (CI) and meat yield (MY) peaked in December (60 and 30%, respectively) and in April, May and June (from 53 to 60% for CI and from 34 to 36% for MY). Gonadosomatic index showed three main peaks in winter, spring and summer months. Contents of protein 8.18–11.9 g/100 g), lipid (0,.78–1.18 g/100 g) and carbohydrate (1.19–3.30 g/100 g) varied significantly during the study period. Saturated fatty acids was the dominant group, except in December when polyunsaturated fatty acids showed the highest proportion (43% of total FAs). Fatty acids of the n3 group were dominant with docosahexaenoic and eicosapentaenoic acids. Highest n3/n6 ratios were recorded in spring-summer specimens, with values > of 5. The results showed a better nutritional quality of scallops in May, July and December.
Highlights
Bivalves are important marine organisms due to their nutritional, commercial and ecological relevance, appreciated for their taste, price, and their healthy attributes (Orban et al, 2002; Orban et al, 2006)
The results showed that the commercial traits condition index (CI) and meat yield (MY) of F. glaber, reared in suspended cages varied at different sampling times of the year
The value of this research was to fill gaps in knowledge of the commercial and nutritional characteristics of F. glaber present in the Italian market at various times of the year. This information has important implications for consumers and farmers that have an interest to promoting a profitable scallop culture along Ionian coasts (Central Mediterranean Sea)
Summary
Bivalves are important marine organisms due to their nutritional, commercial and ecological relevance, appreciated for their taste, price, and their healthy attributes (Orban et al, 2002; Orban et al, 2006). Scallops are considered a delicacy in many countries of the world. They represent an important part of the global seafood market and support both commercial fisheries and aquaculture all around the world (Shumway & Parsons, 2016). In 2014, world imports of scallops reached 157,200 t, with China as leading buyer (38,000 t) followed by the USA. The Italian market for scallops showed an average annual import at 5,800 t in the 2009–2014 period. The exploited European scallop species are Pecten maximus, P. jacobaeus, Aequipecten opercularis, Flexopecten glaber and Mimachlamys varia
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