Meat Yield, Condition Index, and Biochemical Composition of Mussels (Mytilus galloprovincialisLamarck, 1819) in Sinop, South of the Black Sea

2012 ◽  
Vol 21 (3) ◽  
pp. 198-205 ◽  
Author(s):  
Meryem Yeşim Çelik ◽  
Sedat Karayücel ◽  
İsmihan Karayücel ◽  
Recep Öztürk ◽  
Bora Eyüboğlu
Keyword(s):  
Black Sea ◽  
Biochemical Composition ◽  
Yield Condition ◽  
Condition Index ◽  
The Black Sea ◽  
Meat Yield

Effect of starvation on the biochemical compositions and respiration rates of ctenophores Mnemiopsis leidyi and Beroe ovata in the Black Sea

2005 ◽  
Vol 85 (3) ◽  
pp. 549-561 ◽  
Author(s):  
B.E. Anninsky ◽  
G.A. Finenko ◽  
G.I. Abolmasova ◽  
E.S. Hubareva ◽  
L.S. Svetlichny ◽  
...  
Keyword(s):  
Organic Matter ◽  
Black Sea ◽  
Biochemical Composition ◽  
Organic Matter Content ◽  
The Black Sea ◽  
Mnemiopsis Leidyi ◽  
Total Organic Matter ◽  
Total Carbohydrate ◽  
Beroe Ovata ◽  
Wet Weight

The proximate biochemical composition and metabolic rates of ctenophores Mnemiopsis leidyi and Beroe ovata from the Black Sea were examined with respect to starvation conditions. Although organic matter content in B. ovata was two times higher than that of M. leidyi (2.51 ±0.53 and 1.14 ±0.17 mg g-1 of wet weight, respectively), these species did not significantly differ in their biochemical composition. In both species protein formed about 80% of the total organic matter, lipids amounted to about 10%. Carbohydrate and amino acids measured separately made up less than 6.5% of the total organic matter. Under experimental starvation (18 days at 16—18°C for B. ovata and 8 days at 12.4°C for M. leidyi), wet weights of both ctenophore species were reduced by 9.4% and 9.3% d-1, respectively. The rate of organic matter decrease was nearly two times lower than that of wet weight being on average 5.9% d-1 in M. leidyi and 5.5% d-1 in B. ovata. There was no trend in percentage of the four major biochemical categories with starvation time. The glycogen content in polysaccharides reached maximum values in freshly collected ctenophores (76.0 ±7.9% in B. ovata, and 86.6% in M. leidyi), but it was reduced substantially (34.4 ±2.7% in B. ovata and 18.3—28.8% in M. leidyi) with starvation. Monosaccharide content, expressed as a percentage of total carbohydrate, decreased from 39.9% to 13.5% in B. ovata, and from 45.8% to 14.3—23.2% in M. leidyi. The relationship between respiration rate (R) and wet weight (W) of individuals during the starvation can be expressed by power function R = R1 Wk (r2=0.85—0.94; P>0.001) for both ctenophore species. On average, k values were 0.95 and 0.83 in B. ovata and in M. leidyi, respectively. By the end of the starvation, metabolic rate per unit wet weight decreased by 33% in B. ovata and 46% in M. leidyi. Organic matter utilization was almost totally explained by respiration of ctenophores in the experiments and exceeded metabolic requirements of studied species by 11% and 15%, correspondingly. As compared with Mnemiopsis, Beroe has better tolerance to starvation which explains to some extent the success of the species survival during prolonged periods of food shortage in the Black Sea conditions.

scholarly journals Condition Index, Meat Yield and Biochemical Composition of Mediterranean Mussel (Mytilus Galloprovincialis Lamarck, 1819) from Canakkale Strait, Turkey

2021 ◽  
Vol 36 (1) ◽  
pp. 308-314
Author(s):  
Harun Yildiz ◽  
Pervin Vural ◽  
Sefa Acarli
Keyword(s):  
Total Lipid ◽  
Negative Correlation ◽  
Biochemical Composition ◽  
Mytilus Galloprovincialis ◽  
Condition Index ◽  
Meat Yield ◽  
Open Sea ◽  
Mediterranean Mussel ◽  
The Mean ◽  
Sea Cage

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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