Qualitative detection of formaldehyde and ammonia in fish and other seafoods obtained from Chennai's (India) fish markets.

Illegal usage of formaldehyde and ammonia by fishermen and fish sellers for longer preservation of fish and other seafoods during sales and transportation has recently become a problem. Therefore, the present study was conducted to verify the presence or absence of formaldehyde and ammonia in fish and other seafoods that are commercially important for India, which are obtained from fish markets in Chennai. The present investigation results reveal contamination with formaldehyde and ammonia of commercially important fish and other seafoods collected from fish markets in Chennai.

Cytological and histological effects of pesticide chlorpyriphos in the gills of .

The present study was aimed to report the toxicity of the chlorpyrifos, an organophosphorus insecticide, with regard to histological and cytological effects through light and transmission electron microscopes in the gills of freshwater fish, . The fish were exposed to 0.125 (5% of 96 h LC), 0.

The protective effect of vitamin E against changes in fatty acid composition of phospholipid subclasses in gill tissue of Oreochromis niloticus exposed to deltamethrin.

The effects of deltamethrin on the fatty acid composition of phospholipid subclasses (phosphatidylchlonine (PC), phosphatidylethanolamine (PE), phosphatidylinositole (PI) and phosphatidylserine (PS)) in gill tissue of Oreochromis niloticus (Perciformes: Cichlidae) and the possible protective effect of vitamin E against deltamethrin were determined by gas chromatography. The changes in the fatty acid profile were analysed after 14 d of exposure. Treatments included Group I (fed with basal diet only), Group II (fed with vitamin E-supplemented diet), Group III (fed with basal diet and exposed to deltamethrin) and Group IV (fed with vitamin E-supplemented diet and exposed to deltamethrin).

The protective role of vitamin E on the fatty acid composition of phospholipid structure in gill and liver tissues of Oreochromis niloticus exposed to deltamethrin.

Deltamethrin is a commonly used pyrethroid pesticide. Vitamin E is a antioxidant that plays an important role in protecting cells against toxicity by inactivating free radicals generated following pesticides exposure. Therefore, in the present study, it was evaluated whether deltamethrin induced changes on the fatty acid composition of phospholipid in gill and liver tissues in Oreochromis niloticus and, the possible protective effect of vitamin E against deltamethrin was determined.

The protective role of vitamin E on gill and liver tissue histopathology and micronucleus frequencies in peripheral erythrocytes of Oreochromis niloticus exposed to deltamethrin.

Deltamethrin, is a commonly used pyrethroid pesticide. Vitamin E is a antioxidant that plays an important role in protecting cells against toxicity by inactivating free radicals generated following pesticides exposure. Therefore, it was evaluated whether deltamethrin induced histopathological changes and nuclear abnormalities using micronucleus test in Oreochromis niloticus, and the possible protective effect of vitamin E against deltamethrin inducing adverse effects in O.

Histopathological effects of cypermethrin on gill, liver and kidney of fresh water fish Clarias gariepinus (Burchell, 1822), and recovery after exposure.

Gill, liver and kidney of Clarias gariepinus were examined histologically after exposure to sublethal concentrations (10.05, 20.10 and 30.

Levels of transaminases, alkaline phosphatase, and protein in tissues of Clarias gariepienus fingerlings exposed to sublethal concentrations of cadmium chloride.

The freshwater fish, Clarias gariepienus fingerlings, were exposed to sublethal concentrations (1.7 and 3.4 mg/L) of cadmium chloride for 12 days.

Histopathology of lambda-cyhalothrin on tissues (gill, kidney, liver and intestine) of Cirrhinus mrigala.

The histopathology of lambda-cyhalothrin, a synthetic pyrethroid pesticide, on the gill, liver, intestine and kidney tissues in fish, mrigal (Cirrhinus mrigala), which is one of Indian major carp species were determined by light microscopy. The fish were experimentally exposed to sub-lethal concentrations (0.3ppb and 0.

The effects of fenvalerate on different tissues of freshwater fish Cirrhinus mrigala.

The histopathological changes of fenvalerate on the gill, kidney, liver and intestine tissues of the Cirrhinus mrigala were determined by light microscopy. The fish were exposed to two sub-lethal concentrations of fenvalerate (1.5-3.

Gill and kidney histopathology in the freshwater fish Cyprinus carpio after acute exposure to deltamethrin.

The histopathological effects of deltamethrin on the gill and kidney tissues of the common carp, Cyprinus carpio were determined by light microscopy. The fish were exposed to 0.029mgl(-1) (50% of 96h LC(50)) and 0.

Sublethal effects of commercial deltamethrin on the structure of the gill, liver and gut tissues of mosquitofish, Gambusia affinis: A microscopic study.

The histopathological effects of deltamethrin on the gill, liver and gut tissues of the mosquitofish, Gambusia affinis were determined by light microscopy. The fish were exposed to two sublethal concentrations of deltamethrin (0.25-0.

Histopathological effects in tissues of snail Lymnaea stagnalis (Gastropoda, Pulmonata) exposed to sublethal concentration of Thiodan and recovery after exposure.

Histopathological alterations induced by Thiodan in three tissues, namely, digestive gland, foot and mantle, of the freshwater snail Lymnaea stagnalis were investigated. Specimens of Lymnaea stagnalis were exposed to 0.36% and 0.

Histopathological effects of Thiodan on the freshwater snail, Galba truncatula (gastropoda, pulmonata).

Histopathological alterations in three tissues, namely, digestive gland, foot and mantle of the freshwater snail Galba truncatula induced by Thiodan 35 EC, a commercial preparation of endosulfan, were studied in the laboratory. The snails were exposed to five sublethal concentrations of Thiodan, two of them higher concentrations at 0.33% and 0.

The effects of endosulfan on the great ramshorn snail Planorbarius corneus (Gastropoda, Pulmonata): a histopathological study.

In this study the great ramshorn snail (Planorbarius corneus), one of the most abundant gastropod of Turkish limnic systems, was investigated to determine the histopathological effects of endosulfan on the digestive gland, foot and mantle under laboratory conditions. Samples were collected from small artificial pools in Karaot at Gelendost-Isparta (southwest of Turkey), where agricultural activities are widespread. The snails were exposed to two sublethal concentrations of endosulfan (0.