Effects of chronic cadmium exposure on the sexual maturity, production and bioaccumulation of pearl gourani trichogaster leeri
80 day bioassay using three concentration of Cadmium 0.420, 0.201 and 0.121 mg/L were conducted beginning with 5-6 day old Gourami Trichogaster Leeri. The uptake of cadmium occurred during pregnancy indicating that females transfer cadmium to the embryo. Highest concentration of cadmium occurred in...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Academy of Agricultural Sciences, NAAS, India
2003
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/39024/ http://irep.iium.edu.my/39024/ http://irep.iium.edu.my/39024/1/Effects_of_chronic_Cadmium.pdf |
| Summary: | 80 day bioassay using three concentration of Cadmium 0.420, 0.201 and 0.121 mg/L were conducted beginning with 5-6 day old Gourami Trichogaster Leeri. The uptake of cadmium occurred during pregnancy indicating that females transfer cadmium to the embryo. Highest concentration of cadmium occurred in 5 day old concentration (mg/g) which then declined with growth. Cadmium burden (mg/fish) increased primarily from 28-45 day of bioassay. Gourami exposed to 0.201 and 0.121 mg/L cadmium for 45 day had similar cadmium concentration as in control. The most sensitive indicator of toxicity was sexual maturity, which can be used as an estimator of chronic toxicity. |
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