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Abstract of the Article

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Investigation on heavy metals (Mn and Fe) procedure in Rainbow trout eggs in different stage of an incubation period

Authors:
[ Rezaei Tavabe ] - Member of natural resources studies department of international researches center of desert coexist Tehran university
[ Rafee ] - Assistant professor of fishery and environment science department natural resources faculty of Tehran university
[ Taheriazad ] - M.Sc. student of natural resources and marine sciences faculty of Tarbiat Modarres university

Abstract:

Rainbow trout, incubator, incubation period, heavy metal, dry weight Two incubators with same condition as experiment unit were selected which one incubator as experimental incubator with approximately 60000 eggs and another one (control incubator) without any eggs. Then percentage of studied heavy metals in each egg dry weight and variation of these elements between input and discharge water of both incubators was measured during an incubation period weekly basis. Change of concentration percentage for the studied elements in per Rainbow trout egg dry weight in different stages of an incubation period was respectively in first to fifth stages, Mn 183×10-6±19×10-6, 298×10-6±17×10-6, 375×10-6±17×10-6, 385×10-6±15×10-6 and 389×10-6±15×10-6 Fe 379×10-5±16×10-5, 448×10-5±21×10-5, 492×10-5±23×10-5, 586×10-5±12×10-5 and 626×10-5±11×10-5. The results of this study showed significant differences in studied heavy metals concentration with increasing trend between different stages of the incubation period in each rainbow trout egg dry weight (P<0.05)

Keywords:

Rainbow trout, incubator, incubation period, heavy metal, dry weight