Variations in gross biochemical composition, energy value and condition index of T. philippinarum from the Lagoon of Venice

The present study was performed in Çanakkale Strait from September 2012 to August 2013. Biochemical composition (protein, total lipid, moisture, and ash), condition index, and meat yield of Mediterranean mussel, Mytilus galloprovincialis in the net systems hung out the open sea cage units monthly. The mean condition index and meat yield of M. galloprovincialis were found 8.12±0.48 and 16.07±0.70%, respectively. A positive correlation was found between condition index and protein, carbohydrate, and meat yield whereas a negative correlation was seen between condition index and weight, length, lipid, moisture, and ash. In terms of seasons, condition index and protein values were high in autumn, lipid values in summer, and carbohydrate values in spring.

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Seasonal Variations in Gross Biochemical Composition, Percent Edibility, and Condition Index of the ClamRuditapes decussatusCultivated in the Ria Formosa (South Portugal)

Journal of Shellfish Research ◽

10.2983/035.030.0104 ◽

2011 ◽

Vol 30 (1) ◽

pp. 17-23 ◽

Cited By ~ 17

Author(s):

Jaime Aníbal ◽

Eduardo Esteves ◽

Carlos Rocha

Keyword(s):

Seasonal Variations ◽

Biochemical Composition ◽

Condition Index ◽

Ria Formosa ◽

South Portugal

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Condition index, meat yield and biochemical composition of Crassostrea brasiliana and Crassostrea gigas grown in Cabo Frio, Brazil

Aquaculture ◽

10.1016/0044-8486(86)90006-2 ◽

1986 ◽

Vol 59 (3-4) ◽

pp. 235-250 ◽

Cited By ~ 18

Author(s):

Elizabeth Costa Muniz ◽

Salvador Abdalla Jacob ◽

M.M. Helm

Keyword(s):

Crassostrea Gigas ◽

Biochemical Composition ◽

Condition Index ◽

Meat Yield ◽

Cabo Frio

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The Shell of Cardium Edule, Cardium Glaucum and Ruditapes Philippinarum: Organic Content, Composition and Energy Value, As Determined by Different Methods

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315400030976 ◽

1989 ◽

Vol 69 (3) ◽

pp. 563-572 ◽

Cited By ~ 34

Author(s):

P. Goulletquer ◽

M. Wolowicz

Keyword(s):

Biochemical Composition ◽

Energy Content ◽

Organic Content ◽

Ruditapes Philippinarum ◽

Significant Fraction ◽

Energy Budgets ◽

Acid Extraction ◽

Energy Value ◽

Method Of Measurement ◽

True Values

The organic content of the shells of molluscs can represent a significant fraction of the total organic content (Bernard, 1974) but it is often neglected in calculations of energy budgets in these animals. This may be in part due to uncertainty about the true values, since published estimates of the organic content of shells show quite wide variation. The species examined and also the provenance of the selected samples contribute to this variation as does also the method of measurement. The methods principally used have been by ignition at various temperatures from 400 to 550°C for various durations between 2 and 36 h (see Shumway & Newell, 1984; Jørgensen, 1976; Mohlenberg & Kiorboe, 1981; Vahl, 1981; Shafee, 1979; Price et al, 1976) or by acid extraction using different extraction proceedures (see Ivell, 1979; Dame, 1972; Horn, 1986; Griffiths & King, 1979). To calculate the energy content of the organic component some investigators have used the Hughes (1970) coefficient of 5.037 cal mg-1, while others have used Paine's (1971) protein coefficient of 2.39 J g-1. Wilbur & Saleuddin (1983) have called attention to the need for more study of these analyses. We present here the results of a study of the shell organic content of three species of molluscs, using two methods for the measurement and giving data on biochemical composition and energy value.

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