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Osmotic and ionic regulation and the gill Na++K+-ATPase activity in the Japanese shore crab Hemigrapsus sanguineus
Watanabe, K. (1982). Osmotic and ionic regulation and the gill Na++K+-ATPase activity in the Japanese shore crab Hemigrapsus sanguineus. Bull. Jpn. Soc. Sci. Fish 48(7): 917-920
In: Nippon Suisan Gakkaishi = Bulletin of the Japanese Society of Scientific Fisheries. Japanese Society of Scientific Fisheries: Tokyo. ISSN 0021-5392; e-ISSN 1349-998X, meer
Peer reviewed article  
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  • Watanabe, K.
Abstract
    Osmotic, sodium and chloride regulations of hemolymph in Hemigrapsus sanguineus were investigated. The crabs exhibited strong hyperosmoregulation in the range of 50-75% SW. Sodium and chloride ions were also well regulated in the same salinity range. The speciffic activity of gill Na++K+-ATPase was higher in the posterior gills than in the anterior gills. In the posterior gills, the Na++K+-ATPase activity showed an increase of 1.5 times with acclimation from 100% SW to 50% SW. Absorption of sodium ion by H. sanguineus in low salinity may be attributed to the function of the posterior gills which have a high level of Na++K+-ATPase activity.
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