Pesticide in fish tissue.pdf

Pesticides are widely used in agricultural sector in the lower Gangetic delta region to boost up crop production and trigger up the process of pest control. However, many of these pesticides pose adverse impacts on the biotic community by way of bioaccumulation and biomagnification. This study attempts to evaluate the tDDT concentration in the commercially important fish tissues available in the Diamond Harbour region along the Hooghly estuaries. The tDDT concentration varies as per the order Lates calcarifer (52.19 ±2.34 ng g-1 lipid wt.) > Penaeus sp. (45.64 ±2.01 ng g-1 lipid wt.) > Tenualosa ilisha (35.65 ±1.23 ng g-1 lipid wt.) > Pangasius sp. (29.17± 1.62 ng g-1 lipid wt.) > Pampus sp. (23.46 ±1.2 ng g-1 lipid wt.) > Polynemus paradiseus (23.29 ±1.09 ng g-1 lipid wt.). Overall, these concentrations are lower than those usually observed in different parts of the World, apparently as a result of high tidal actions at regular intervals that allow dispersion of the pollutants and subsequently reduces the probability of bioaccumulation.

Pesticides are widely used in agricultural sector in the lower Gangetic delta region to boost up crop production and trigger up the process of pest control. However, many of these pesticides pose adverse impacts on the biotic community by way of bioaccumulation and biomagnification. This study attempts to evaluate the tDDT concentration in the commercially important fish tissues available in the Diamond Harbour region along the Hooghly estuaries. The tDDT concentration varies as per the order Lates calcarifer (52.19 ±2.34 ng g-1 lipid wt.) > Penaeus sp. (45.64 ±2.01 ng g-1 lipid wt.) > Tenualosa ilisha (35.65 ±1.23 ng g-1 lipid wt.) > Pangasius sp. (29.17± 1.62 ng g-1 lipid wt.) > Pampus sp. (23.46 ±1.2 ng g-1 lipid wt.) > Polynemus paradiseus (23.29 ±1.09 ng g-1 lipid wt.). Overall, these concentrations are lower than those usually observed in different parts of the World, apparently as a result of high tidal actions at regular intervals that allow dispersion of the pollutants and subsequently reduces the probability of bioaccumulation.

Pesticides are widely used in agricultural sector in the lower Gangetic delta region to boost up crop production and trigger up the process of pest control. However, many of these pesticides pose adverse impacts on the biotic community by way of bioaccumulation and biomagnification. This study attempts to evaluate the tDDT concentration in the commercially important fish tissues available in the Diamond Harbour region along the Hooghly estuaries. The tDDT concentration varies as per the order Lates calcarifer (52.19 ±2.34 ng g-1 lipid wt.) > Penaeus sp. (45.64 ±2.01 ng g-1 lipid wt.) > Tenualosa ilisha (35.65 ±1.23 ng g-1 lipid wt.) > Pangasius sp. (29.17± 1.62 ng g-1 lipid wt.) > Pampus sp. (23.46 ±1.2 ng g-1 lipid wt.) > Polynemus paradiseus (23.29 ±1.09 ng g-1 lipid wt.). Overall, these concentrations are lower than those usually observed in different parts of the World, apparently as a result of high tidal actions at regular intervals that allow dispersion of the pollutants and subsequently reduces the probability of bioaccumulation.

Pesticides are widely used in agricultural sector in the lower Gangetic delta region to boost up crop production and trigger up the process of pest control. However, many of these pesticides pose adverse impacts on the biotic community by way of bioaccumulation and biomagnification. This study attempts to evaluate the tDDT concentration in the commercially important fish tissues available in the Diamond Harbour region along the Hooghly estuaries. The tDDT concentration varies as per the order Lates calcarifer (52.19 ±2.34 ng g-1 lipid wt.) > Penaeus sp. (45.64 ±2.01 ng g-1 lipid wt.) > Tenualosa ilisha (35.65 ±1.23 ng g-1 lipid wt.) > Pangasius sp. (29.17± 1.62 ng g-1 lipid wt.) > Pampus sp. (23.46 ±1.2 ng g-1 lipid wt.) > Polynemus paradiseus (23.29 ±1.09 ng g-1 lipid wt.). Overall, these concentrations are lower than those usually observed in different parts of the World, apparently as a result of high tidal actions at regular intervals that allow dispersion of the pollutants and subsequently reduces the probability of bioaccumulation.

Analyses of chlorpyriphos, ethion and dicofol in the river Deomoni from Terai region of West Bengal revealed mean pesticide residues of chlorpyriphos, dicofol and ethion in water sample as 0.0091 ± 0.0020ppm, 0.0180 ± 0.0071ppm and 0.0892 ± 0.0375 ppm, respectively, in sediments 0.0513 ± 0.0085ppm, 0.0414 ± 0.0045ppm and 0.1271 ± 0.0122ppm and in fish muscles (Puntius sp.) 5.0371 ± 1.4236 ppm, 3.7700 ± 0.6391ppm and 2.9599 ± 0.4027ppm, respectively. Analysis of pesticide residues by one way ANOVA for chlorpyriphos, dicofol and ethion in the water and sediments, the sediment and muscles and water and muscles were found to be highly significant (p<=0.001) except for dicofol in water and sediment, which is significant at p<=0.01. The result indicates that river Deomoni is contaminated by pesticide from the nearby tea gardens which affects the water quality and non target organisms like fishes thereof.

An investigation into the levels of selected pesticides in surface waters, sediment and fish (Mudskipper) in the Elechi creek was carried out in two seasons and at three predetermined sites. A higher concentration of 2, 4-diamine was observed in all stations and matrixes, while propoxur was least observed. Pesticide concentration in sediment is significantly different from that of water and fish tissue, which had the highest residual concentration. Concentration of pesticides ranged from 0.01 to 0.04 µg/L in water, 0.01 to 0.06 µg/gdw in sediment and 0.01 to 0.07 µg/gdw in fish, respectively. There was bioaccumulation of pesticides in fish samples. Observed residues are generally higher than stipulated limit of 0.01 µg/L by USEPA for pesticides of aquatic life, therefore, possess an ecological risk to the ecosystem and consequently human health.

Analyses of chlorpyriphos, ethion and dicofol in the river Deomoni from Terai region of West Bengal revealed mean pesticide residues of chlorpyriphos, dicofol and ethion in water sample as 0.0091 ± 0.0020ppm, 0.0180 ± 0.0071ppm and 0.0892 ± 0.0375 ppm, respectively, in sediments 0.0513 ± 0.0085ppm, 0.0414 ± 0.0045ppm and 0.1271 ± 0.0122ppm and in fish muscles (Puntius sp.) 5.0371 ± 1.4236 ppm, 3.7700 ± 0.6391ppm and 2.9599 ± 0.4027ppm, respectively. Analysis of pesticide residues by one way ANOVA for chlorpyriphos, dicofol and ethion in the water and sediments, the sediment and muscles and water and muscles were found to be highly significant (p<=0.001) except for dicofol in water and sediment, which is significant at p<=0.01. The result indicates that river Deomoni is contaminated by pesticide from the nearby tea gardens which affects the water quality and non target organisms like fishes thereof.

Bulletin of Environmental Contamination and Toxicology, 1990

Bangladesh Journal of Zoology, 2016

Pesticide residues, specially the persistent organic pollutant (POP) were analyzed from some fish species of Rangpur floodplain, Bangladesh. Fish samples were extracted with ethyl acetate, cleaned by sulphuric acid and analyzed by gas chromatograph and gas chromatograph-mass spectrometer. Presence of endrin was detected in Taki fish (Channa punctatus) samples. Traces of other pesticides were also evident. This confirms the use of banned pesticide in the northwestern Bangladesh. We discussed some consequences of public health issues if these contaminantspasses through in the higher food chain from the wetland ecosystem.

2011

The proximate composition is used to assess the nature and extent of pesticide induced pathogenesis in Etroplus maculatus , which is a true denizen in the paddy fields of Kuttanand. E. maculatus was subjected to long term exposure to sublethal concentrations of monocrotophos, which is a widely used organophosphate pesticide in the paddy fields of Kuttanad. The results showed that, the Maximum Allowable Toxicant Concentration (MATC) end points of carbohydrate and ash gave sensitive end points whereas that of protein and fat was less sensitive. For monitoring early changes, biochemical biomarkers can be used as sensitive end points. The application factors (AF), derived from the laboratory studies can be directly assigned to the field conditions of Kuttanad, as the experimental fishes are the true denizens of Kuttanad water bodies. If we know the application factor of one pesticide, the MATC for other related pesticides could be easily calculated provided its 48 h LC50 is known. This ...