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Stalin, P.
- Acute Toxicity Bioassays of Cadmium and Mercury on the Juveniles of Asian Seabass Lates calcarifer (Bloch)
Abstract Views :610 |
PDF Views:154
Authors
V. Mohan Raj
1,
A. R. Thirunavukkarasu
2,
M. Kailasam
2,
M. Muralidhar
2,
R. Subburaj
2,
P. Stalin
2
Affiliations
1 Sir Theagaraya College, PG & Research Department of Zoology, Chennai, Tamil Nadu, IN
2 Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, R.A. Puram Chennai-600 028, Tamil Nadu, IN
1 Sir Theagaraya College, PG & Research Department of Zoology, Chennai, Tamil Nadu, IN
2 Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, R.A. Puram Chennai-600 028, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 6, No 4 (2013), Pagination: 4329-4335Abstract
The present study was undertaken to investigate the acute toxicity of two heavy metals cadmium and mercury in the juveniles of Asian seabass Lates calcarifer (Bloch) which is considered as an important candidate fish species for brackishwater and freshwater aquaculture. Experiments for the bioassay were performed in static bioassay test condition according to the standard guidelines. The experiment was carried out in the FRP tanks under laboratory condition. The behavioral changes in the fish were observed for all test concentrations of both cadmium and mercury. Median lethal concentrations (LC50) were calculated for 24h, 48h, 72h and 96h by probit analysis. The LC50 values for 96h and 95% confidence intervals for the juveniles of seabass L. calcarifer showed 6.08 ppm for cadmium and 1.03 ppm for mercury. Furthermore, the exposed specimens showed dose and duration dependent, abnormal behavior and hyperactivity. Mercury indicated more toxic than cadmium for seabass L. calcarifer.Keywords
Lates calcarifer, Heavy Metals, Cadmium, MercuryFull Text
References
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- Influence of Zinc and Boron in Residual Blackgram Productivity
Abstract Views :444 |
PDF Views:0
Authors
Affiliations
1 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India-641003, IN
2 Department of Soil Science and Agricultural ChemistryTamil Nadu Agricultural University, Coimbatore, Tamil Nadu, IN
1 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India-641003, IN
2 Department of Soil Science and Agricultural ChemistryTamil Nadu Agricultural University, Coimbatore, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 6, No 8 (2013), Pagination: 5105-5108Abstract
A field experiment was conducted on sandy loam soil to study the effect of applied zinc and boron to the residual blackgram in maize-blackgram cropping system during (2011-12) kharif season. There were three and nine levels of NPK as main treatments and Zn and B as sub plot treatments respectively. Results revealed that soil application of ZnSO4 and Borax @ 50 kg and 10 kg ha-1 (S8) respectively combined with recommended 100% NPK ha-1 to the proceeding crop, significantly recorded the highest dry pod (690.3 kg ha-1) and haulm yield (803.2 kg ha-1) with increase being 52.16 and 50.7% over control for the successive residual blackgram. The same treatment also greatly influenced the yield attributes viz., the highest number of pods plant-1 and 100 seed weight and found on par with treatment (S9).Keywords
Blackgram, Boron, Cropping System, Residual, Yield, ZincFull Text
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