'l'OXICI'l'Y OF KERt.::URY 10 MUGII. CAPITO FRYS IN PRESENCE OF ED'l'A AND COPPER SULPHATE

‘l’OXICI’l’Y OF KERt.::URY 10 MUGII. CAPITO FRYS
IN PRESENCE OF ED’l’A AND COPPER SULPHATE
F. E. El-NADY
oceanography Department, Facult¥ of science,
Alexandria university, Alexandr1a, Egypt.
ABSTRAC’f
Some experiments were undertaken to study the ~ffect .of
fOTA and CUS04 on the toxicity of mercury to Mug,l CapIto
fries of • length ranging between 3-5 cm. The lethal doses
of HgCl , CUSOZ + HgCI 2 + CUS04, HgCl Z + fOTA and HGCl 2 + 2 CUS0 + EOTA for the Mugil capito fries are as follows:
4
24 hr lCSO Is 0.64 ppm HgCl 2
96 hr lCSO is 2.00 ppm CUS04
120hr lC is 0.64 ppm H;CI 2 + 2.0 ppm CUS02 SO
12 hr lC is 0.64 ppm HgCl 2 + 2.0 ppm fOTA and
SO 96 hr leso Is 0.64 ppm HgCl 2 + 2.0 ppm fOTA + 2.0 ppm
CUSO!••
~n,.~ i!ff~ct of Cu~04 and EOTA c·n the Acute lethal
tot.it.lty cd thf< fries Ie deBdy obvku"', 'ire presence of f"SO. ~u~ ,j'-..::u,'){.1 tn r6h;1,~c' tLe ~{)}tl-titr 0f m;.~rClJry (' r SO ' 't:c,1"'2!t ;-,r .,'~) .~JJ