, M . Danielle McDonald and Martin Grosell acute hypersalinity stress limits osmoregulation in response to Opsanus beta in the intestinal lumen of 4 Concentration of MgSO
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acute hypersalinity stress limits osmoregulation in response to Opsanus beta in the intestinal lumen of 4 Concentration of MgSO You might find this additional info useful... ranging from molecules to humans, including clinical investigations. It is published 12 times a year (monthly) by the American illuminate normal or abnormal regulation and integration of physiological mechanisms at all levels of biological organization, publishes original investigations that
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Concentration of MgSO4 in the intestinal lumen of Opsanus beta limits osmoregulation in response to acute hypersalinity stress.
Marine teleosts constantly lose water to their surrounding environment, a problem exacerbated in fish exposed to salinity higher than normal seawater. Some fish undergo hypersaline exposures in their natural environments, such as short- and long-term increases in salinity occurring in small tidal pools and other isolated basins, lakes, or entire estuaries. Regardless of the degree of hypersalin...
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The absorption of Cl(-) and water from ingested seawater in the marine fish intestine is accomplished partly through Cl(-)/HCO(3)(-) exchange. Recently, a H(+) pump (vacuolar-type H(+)-ATPase) was found to secrete acid into the intestinal lumen, and it may serve to titrate luminal HCO(3)(-) and facilitate further Cl(-)/HCO(3)(-) exchange, especially in the posterior intestine, where adverse con...
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The gulf toadfish, Opsanus beta, is a marine teleost fish with an aglomerular kidney that is highly specialized to conserve water. Despite this adaptation, toadfish have the ability to survive when in dilute hypoosmotic seawater environments. The objectives of this study were to determine the joint role of the kidney and intestine in maintaining osmotic and ionic balance and to investigate whet...
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Carbonic anhydrase (CA) is a ubiquitous enzyme involved in acid-base regulation and osmoregulation. Many studies have demonstrated a role for this enzyme in fish osmoregulation in seawater as well as freshwater. However, to date CA responses of marine fish exposed to salinities exceeding seawater (approximately 35 ppt) have not been examined. Consequently, the aim of the present study was to ex...
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Marine teleosts drink seawater, and the digestive tract is a key organ of osmoregulation. The gastro-intestinal tract therefore offers a second site for the potential uptake and toxicity of waterborne metals, but how these processes might interact with the digestive functions of the tract has not been investigated previously. We therefore compared the responses of adult gulf toadfish (Opsanus b...
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