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Ahmed, A., Gomaa, A. (2014). EFFECTS ON PATHOLOGICAL AND TOXICOLOGICAL ASPECTS OF NILE TILAPIA Oreochromis niloticus OF USING MALATHION TO ERADICATE Lethocerus niloticum INSECTS. Journal of Animal and Poultry Production, 5(8), 499-516. doi: 10.21608/jappmu.2014.70616
Amal M. Ahmed; A. M.H. Gomaa. "EFFECTS ON PATHOLOGICAL AND TOXICOLOGICAL ASPECTS OF NILE TILAPIA Oreochromis niloticus OF USING MALATHION TO ERADICATE Lethocerus niloticum INSECTS". Journal of Animal and Poultry Production, 5, 8, 2014, 499-516. doi: 10.21608/jappmu.2014.70616
Ahmed, A., Gomaa, A. (2014). 'EFFECTS ON PATHOLOGICAL AND TOXICOLOGICAL ASPECTS OF NILE TILAPIA Oreochromis niloticus OF USING MALATHION TO ERADICATE Lethocerus niloticum INSECTS', Journal of Animal and Poultry Production, 5(8), pp. 499-516. doi: 10.21608/jappmu.2014.70616
Ahmed, A., Gomaa, A. EFFECTS ON PATHOLOGICAL AND TOXICOLOGICAL ASPECTS OF NILE TILAPIA Oreochromis niloticus OF USING MALATHION TO ERADICATE Lethocerus niloticum INSECTS. Journal of Animal and Poultry Production, 2014; 5(8): 499-516. doi: 10.21608/jappmu.2014.70616

EFFECTS ON PATHOLOGICAL AND TOXICOLOGICAL ASPECTS OF NILE TILAPIA Oreochromis niloticus OF USING MALATHION TO ERADICATE Lethocerus niloticum INSECTS

Article 4, Volume 5, Issue 8, August 2014, Page 499-516  XML PDF (1.35 MB)
Document Type: Original Article
DOI: 10.21608/jappmu.2014.70616
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Authors
Amal M. Ahmed; A. M.H. Gomaa
Regional Center for Food and Feed
Abstract
Male tilapia fish (Oreochromis niloticus)and water bugs (Lethocerus niloticum) were studied in a presence of malathion (diethyldimethoxy thiophosphoryl thiosuccinate) of commercial grade 57%. Fish were fed during the experimental period once daily on a commercial dry pellet ration, while water bugs were fed on fish offales.  They all were acclimatized to the same laboratory conditions for 2 weeks before the beginning of the experiment. Different malathion concentrations were experimented. The present study revealed that the minimum malathion concentration level that induced mortality of water bugs without any lethality on Oreochromis niloticus fish was 0.26 mg/L for 96 hrs exposure period. However, some toxic effects and histopathological alterations were observed at that condition. Gonadosomatic index, serum Testosterone, T3and T4concentration levels were determined. Brain AChE and LDH activities were also analyzed. Fish liver, spleen, gills, testes, brain and thyroid gland samples were histopathological studied.
 
Keywords
tilapia; water bugs; malathion; Histopathological
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