STUDY ON THE UPTAKE OF DDT BY TILAPIJ\ ZILLII (GERV) LIVING IN FRESH OR SALINE WATER.

STUDY ON THE UPTAKE OF DDT BY TILAPIJ\ ZILLII (GERV)
LIVING IN FRESH OR SALINE WATER.
HAMED H. SALEH
Institute of Oceanography and Fisheries.
Kayet Bey. Alexandria. Egypt.
ABSTRACT
This study is a trial to prove that the environmental,
factors. e.g. salinity. affect the uptake of DDT (organic
pollutants) by the fish. This study showed that the uptake
of DDT by Tilapia zillff living in polluted fresh water
to resist to ,some extent the en-trance of DDT through its
gills. skin and intestine.
This study showed the accumulation of pollutants on
the bottom. as a result of sedimentation of the faeces
of the fish which contain very high concentrations of DDT
on the bottom specially when the polluted water body is
stagnant and snallow.