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| EFFECTS OF METALS ON HATCHING SURVIVAL OF MARINE FISH EGGS |
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| The present investigations focus on the effects of various concentrations of six heavy metals on hatching the eggs and survival of larvae of flatfish taken from Jiaozhou Bay Qing-dao. Metals tested are Hg, Cu, Zn, Cd, Fb and Cr from their salts. The results show that the eggs are much more resistant to pollutant substances than larval fish. The heavy metals try to permeate through protecting membrance into eggs. The toxicity of heavy metals varies with the hardness of water, being in order of nonion water>fresh water>salty-fresh water>sea water. |
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