Toxic Effect and Bioavailability of Malathion Spiked in Natural Sediments from the Ignacio Ramirez Dam on the Snail Stagnicola sp

Assem, 1989, Brain AchE of the teleost Clarias lazera as an indicator of water contamination by phenol or methanol, Bull. Nat. Inst. Oceanogr. Fish., 15, 119 Aziz, F., Amin, M., and Shakoori, A. C.1993. Toxic effect of cadmium chloride in the haemotology of fish Tilapia mossambica. Proceedings of the Pakistan Congress of Zoology, Lahore, Pakistan Zool. Soc. Pakistan, Vol. 13, 141–154. Begum, 1996, Alterations in protein metabolism of muscle tissue in the fish Clarias batrachus (Linn) by commercial grade dimethoate, Bull. Environ. Contam. Toxicol., 57, 223, 10.1007/s001289900179 Bradford, 1976, A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein–dye binding, Anal. Biochem., 72, 248, 10.1016/0003-2697(76)90527-3 Buege, 1978, Microsomal lipid peroxidation, Methods Enzymol., 51, 302, 10.1016/S0076-6879(78)52032-6 Burton, 1992 De la Vega, 1997, Bioaccumulation of methyl-parathion and its toxicology in several species of the freshwater community at Ignacio Ramı́rez dam in México, Ecotoxicol. Environ. Saf., 38, 53, 10.1006/eesa.1997.1551 Ferrando, 1991, Changes in selected biochemical parameters in the brain of the fish Anguilla anguilla (L) exposed to lindane, Bull. Environ. Contam. Toxicol., 47, 459, 10.1007/BF01702211 Filov, 1979 Fredd, 1979, Physicochemical properties of several organophosphates: Some implication in environmental and biological behaviour, Pestic. Biochem. Physiol., 10, 203, 10.1016/0048-3575(79)90023-3 Geyer, 1986, Bioconcentration potential of organic environmental chemicals in humans, Regul. Toxicol. Pharmacol., 6, 313, 10.1016/0273-2300(86)90002-4 Geyer, 1994, The relevance of aquatic organisms lipid content to the toxicity of lipophillic chemicals: Toxicity of lindane to different fish species, Ecotoxicol. Environ. Saf., 28, 53, 10.1006/eesa.1994.1034 Hestrin, 1949, The reaction of acetylcholine and other carboxylic acid derivatives, with hydroxylamine and its analytical application, J. Biochem., 3, 249 Hoffman, 1990, Effects of boron on growth and physiology in mallard duckings, Environ. Toxicol. Chem., 9, 335, 10.1002/etc.5620090309 Howard, 1991 INEGI, 1994, Anuarios estadı́sticos del Estado de México. (Statistic yearbook of México), Instituto Nacional de Estadı́stica e Informatica (National Institute of Statistic an Information techology). Kacew, 1980, Aspects of molecular mechanisms underlying biochemical toxicology of lead, 43 Kanazowa, 1978, Bioconcentration ratio of diazinon by fresh water fish and snail, Bull. Environ. Contam. Toxicol., 20, 613, 10.1007/BF01683573 Kufcsak, 1994, Investigation of effects of pesticides on molecular forms of AChE in alimentary canals of carp, Pestic. Biochem. Physiol., 49, 155, 10.1006/pest.1994.1043 Manahan, 1992 Margalef, R.1983. Limnologı́a, pp. 25–45. De. Omega, Barcelona, España. Martı́n, 1981, Use of reactivation techniques for the differential diagnosis of organophosphate and carbamate pesticide poisoning in birds, Bull. Environ. Contam. Toxicol., 26, 775, 10.1007/BF01622170 Martı́nez-Tabche, 1993, Efecto tóxico del plomo sobre el pez Oreochromis hornorum, intoxicado a través de una cadena trófica artificial, Rev. Toxicol., 10, 36 Parkinson, 1996, Biotransformation of xenobiotics, 142 Pölos, 1988, Paraquat and atrazine co-resistance in Cpzya canadensis(L.) Cronq, Pestic. Biochem. Physiol., 30, 142, 10.1016/0048-3575(88)90048-X Postman, 1968, Lipid screening in clinical chemistry, Biochem. Soc. Transact., 22, 569 Ramı́rez, 2000, Relationship between toxicokinetics of carbaryl and effect on acetylcholinesterase activity in Pomacea patula snail, Ecotoxicol. Environ. Saf., 46, 234, 10.1006/eesa.1999.1911 Rand, 1985 Scaps, 1997, Effects of orgonophosphate and carbamate pesticides on acetylcholinesterase and choline acetyltransferase activities of the polychaete Nereis diversicolor, Arch. Environ. Contam. Toxicol., 33, 203, 10.1007/s002449900244 Sethunathan, 1991, Fate and significance in the environment, 43 Shaaltiel, 1988, Cross tolerance to herbicidal and environmental oxidants of plant biotypes tolerant to paraquat, sulfur dioxide and ozone, Pestic. Biochem. Physiol., 31, 13, 10.1016/0048-3575(88)90024-7 Srinvasulu, 1989, In vivo modification of lipid metabolism in response to phosphamidosn, methylparathion and lindane exposure in the penaeid prawn, Metapenaeus monoceros, Bull. Environ. Contam. Toxicol., 43, 603, 10.1007/BF01701942 Wallace, 1988, Reactivation and aging of phosphorylated brain caetylcholinesterase from fish and redents, Toxicol. Appl. Pharmacol., 92, 307, 10.1016/0041-008X(88)90390-0 Wauchope, 1992, Pesticide properties database for environmental decisionmaking, Rev. Environ. Contam. Toxicol., 123, 5 Yalcin, 1986, Simulation of lipids peroxides and impairment of gluthatione-dependent defence system in the liver of rats repeatedly treated with carbon tetrachlorine, Jour. Toxicol., 6, 303 Yarsan, 1999, Effects of aldicarb and malathion on lipid peroxidation, Bull. Environ. Contam. Toxicol., 63, 575, 10.1007/s001289901019 Yasuno, 1967, Inactivation of some organophosphorous insecticides by bacteria in polluted water, Jpn. J. Exp. Med., 35, 545