Intestinal nutrient transport in coho salmon oncorhynchus kisutch and the effects of development starvation and seawater adaptation

作者: Nathan L. Collie

DOI: 10.1007/BF00695770

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摘要: Intestinal nutrient transport in yearling coho salmon was characterized and adaptive changes were described relation to development, starvation, environmental salinity. Salmon intestine exhibits a small transepithelial potential difference (TEP: −1.4 2.0 mV, mucosa ground) low resistance (41 181 ohms·cm2) that varied with the region along intestine, Addition of glucose or proline mucosal side caused rapid increase short-circuit current. Isotopic mucosalto-serosal net fluxes achieved across absence chemical electrical gradients. A sleeve technique for measuring influx (Karasov Diamond 1983a) validated use intestine. Comparison total different intestinal regions showed following order (from highest lowest rates): pyloric caeca ≫ anterior > posterior Total April during parr-smolt transformation.

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