ISBN-10: 0203361407

ISBN-13: 9780203361405

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Addressing the various gaps in present info, goal Organ Toxicology in Marine and Freshwater Teleosts is an important source for researchers and pros in aquatic toxicology and environmental probability evaluate. all of the chapters are written through researchers who're across the world known for his or her paintings in mechanistic elements of aquatic toxicology. every one bankruptcy specializes in a particular aim organ or physiological procedure and describes how a variety of brokers disrupt the traditional physiological method and procedures. This quantity is dedicated to express organs with assurance of the gill, kidney, pores and skin, liver and intestine. The spouse quantity, structures, offers assurance of poisonous results within the important anxious, immune, neurobehavioural and reproductive platforms in addition to describing common mechanisms of toxicity.

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RETAILESQUE

Addressing the various gaps in present info, goal Organ Toxicology in Marine and Freshwater Teleosts is a necessary source for researchers and execs in aquatic toxicology and environmental probability overview. the entire chapters are written through researchers who're the world over known for his or her paintings in mechanistic elements of aquatic toxicology. each one bankruptcy specializes in a selected objective organ or physiological process and describes how a variety of brokers disrupt the traditional physiological method and techniques. This quantity is dedicated to express organs with assurance of the gill, kidney, epidermis, liver and intestine. The significant other quantity, structures, presents insurance of poisonous results within the imperative anxious, immune, neurobehavioural and reproductive structures in addition to describing normal mechanisms of toxicity.

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G. 5 mequiv L–1) typical of acidified lakes in Northern Europe and North America, Na+ and Cl– losses are much larger but are approximately equal (and K+ loss is low), so there is negligible internal acidosis. This modifying effect of water hardness is also seen in complex alterations of the transepithelial potential at low pH (McWilliams and Potts, 1978), the interpretation of which remains controversial (Wood, 1989). 3 for 3 days (data from Wood, 1989). Changes, relative to pre-exposure control value at circumneutral pH, in (A) plasma sodium, (B) plasma chloride, (C) arterial plasma pH, and (D) metabolic acid load in the arterial blood.

1992, 1993a, b; Janes and Playle, 1995; Playle, 1998; Richards and Playle, 1998). This group has articulated simple methods based on a combination of Langmuir adsorption isotherm analysis and competition experiments with organic acids of known KD values and concentration to estimate metalgill KD values. g. g. g. Cl−, HCO3−, OH−, organic acids, dissolved organic matter) agents. This approach has now been applied to model successfully gill loading of copper, cadmium, silver, and cobalt, with some extrapolation to resultant pathophysiologic effects and mortality; potentially it could be applied to any cationic toxicant.

Therefore, in seawater, all free Ag+ is bound up by Cl−, and silver is at least three orders of magnitude less toxic than in freshwater. , 1999). e. , 1996). 15). Indeed, effluxes generally decline as the internal gradients run down. 7A). 0 (Janes and Playle, 1995). 15), presumably reflecting the time taken to penetrate to the basolateral membranes. Internal metabolic acidosis develops associated with a uptake of acidic equivalents across the gills, and a marked decline in plasma HCO3−. The mechanism for this is unclear, but as net Na+ and Cl− losses are approximately equimolar it is likely related to the large loss of K+ across the gills which occurs in the face of unchanged plasma [K+] (Webb and Wood, 1998).

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Target Organ Toxicity in Marine and Freshwater Teleosts: Organs


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