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(T/FF242) Histopathological study of liver of the tench (Tinca tinca L) after lindane exposure. Gómez, Luis1, Vergara, Guillermo1, Soler, Francisco1, García, Pablo1, Roncero, Vicente1, 1 ABSTRACT- The presence of toxic substances poses a serious problem in aquatic ecosystems due to their potential effects on the inhabitants of this environment, which are in constant contact with contaminants. Lindane is an organochlorinated pesticide that was used in agriculture. The uptake in the organism of fish was made through skin, gills and digestive system with the food consumption. The study of the happened lesions in the liver can help in the latter diagnosis of the presence of this substance in the environment. An experimental study was made of the liver parenchyma of 30 adult tench (Tinca tinca L.) subjected to acute experimental lindane poisoning. Used dosage was 0.1 mg/l. of product solved in water. Fish were killed at 1, 2, 3, 4, 5 y 10 days after poisoning. Controls were used simultaneously. Equilibrium loss and anomalous movements were noted since the first day plus massive haemorrhages in the skin (ventral and perineal zone). Structurally a degenerative-necrotic process was shown in the parenchyma cells. Key words: tench, lindane, hepatocites, poisoning |
