Abdel Moati, M.A.R., A.N. Khalil, N.M. Nour El Dinn & M. Atta. (1995). Biochemical composition of the copepod Euterpina acutifrons from the coastal waters of Alexandria. Qatar University Science Journal. 14(2):395-403.

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Abdel Moati, M.A.R., A.N. Khalil, N.M. Nour El Dinn & M. Atta

1995

14(2):395-403.

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Protein, carbohydrate and lipid contents were determined in the most numerous and wide spread copepod Euterpina acutifrons collected from the coastal waters of Alexandria. Protein is the major biochemical component of the copepod constituting on the average 35.2 ±6.7% of the organisms' dry weight followed by carbohydrate (7.9 ± 1.6%) and lipid (3.7 ± 1.9%) contents. Organ- isms collected from the Eastern Harbor (eutrophic basin) affected by sewage discharge were characterized by high biochemical contents while opposite to landbased sources affected by industrial discharge, the organisms' biochemical components were at a minimum. Compared to other representatives of the zooplankton community, Euterpina retains high protein content indicating its suitability as food for marine fishes. The stepwise multiple regression equations revealed that the different biochemical components ofEuterpina are mostly affected with the occurrence of available food represented by chlorophyll a concentrations. The average Protein/Carbohydrate ratio for E. acutifrons i.e. 4.46 ± 2.3 indicate that the organism is inhabiting a nutrient sufficient environment. Lipid/protein ratios more than 0.2 observed at industrial discharge affected areas indicate pollution impact on protein production.

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