Abstract:
The annual cycle in total protein, lipid, glycogen caloric values, ash and tissue weight of the green mussel Perna varidis were studied during the year 1981. The percentage composition of these parameters was described along with the weight composition of a standard size mussel (65 mm). The protein and lipid, content paralleled the changes in tissue weight which showed a decline during the spawning period (July to October). There is an inverse relationship between glycogen and protein and tissue weight. The glycogen content reached its minimum in June and thereafter rose gradually to reach its peak in October-November. The glycogen level was very low compared to other mussel species. Changes in biochemical contents were also reflected in calorific value which exhibits a seasonal cycle dropping to lowest values during the spawning season. The mean caloric values of dry tissue weight were 4.63 Kcal/g ash-inclusive and 5.21 Kcal/g ash-free.
Page(s):
30-34
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 29, Issue: 1, Year: 1986