Biological and Histological Studies on the Effect of Industrial Wastewater Discharged in the Suez Bay on the Fingerlings of Mullet

Abstract

The Suez Bay was considered a nursery ground for most of the important commercial fishes and the only source for Mugil species that represent the main catch, especially Mugil seheli. At present, evidence of decline in the landings of Mugil Seheli in the Suez Bay among commercial is noticed.

In addition, more effects are wastewater released in the aquatic environment, resulting in significat disturbances of breeding, feeding and migration pattern of communities.

• FP (N. unit) wastewater parameters were: temperature (306-20.9° C), pH (117-8.1), DO (3.0 - 1.2 ml 02/L), alkalinity (593.5 - 150.0 mg Ca2CO:/L), COD (210-72 mg/L), ammonia (271 9-100.9. mg/L) and phosphate (1.38-0.26

mg/L). •

• FP (S. unit) parameters were: temperature (30.5-21.0° I C), pH (8.9-7.2), DO, (3.1-2.0 mg 02/L), Alkalinity (320- ' i 110 mg Ca C03/L), COO (187-65.2 mg/L), Ammonia

(497-151 A mg/L) and!Phosphate (1.2-0.13 mg/L). I •

• Misr-lran Textile i wastewater parameters were: temperature (29.0-18.3° C), pH (11.9-8.5), DO (3.5-0.32 ml 02/L), alkalinity (721.4-341.2 mg CaCOyL), COO ! (437.1-105.6 mg/L), ammonia (3.99-1.17 mg/L) and (3.2-

0.5 mg/L).

• North drain wastewater parameters were: temperature

(32 0-27 go C), pH (10.7-8.7), DO (2.5-2.3 ml 02 /L),