BACTERIAL NUMBER, HETEROTROPHY AND EXTRA CELLULAR ENZYME ACTIVITYIN THE SEA WATER OFALEXANDRIA HARBOUR, EGYPT

BACTERIAL NUMBER, HETEROTROPHY AND EXTRA CELLULAR

ENZYME ACTIVITYIN THE SEA WATER OFALEXANDRIA HARBOUR,

EGYPT

BY

EMANLSIAM

Assistant Professor in Marine Environmental Protection Programmer Arab Academyfor Science and

Technology andMaritime Transport

ABSTRACT
To study the structure and jUnction of bacterial population in
Alexandria harbour which is located between 29° 50′ – 29° 53′ longitude E
and 13° 9′ – 31 ° 12′ latitude N sampling stations. Samples were chosen.
Samples were collected from surface and bottom sea water in the years
2001-2002.
The number oftotal bacteria in sea water was between 2.3 x 104 cells /
ml and 1.4 x 1d cells / ml and the total number ofsaprophytic bacteria
was ~igni.ficantly low with regard to the total bacterial number. Turnover
times of glucose and leucine were extremely variable depending on the
sampling station and the water depth.
In deep sea water the enzyme activity of a-glycosidase, N-acetyl f3­
glucosaminidase and amino peptidase of the slow grOWing bacterial
population were higher then those of the fast grOWing bacterial
population, B- glycosidase activities, however, were higher in the fast
grOWing bacterial populations.