Active Absorption of Cl– and Na+ in Posterior Gills of Chinese Crab Eriocheir Sinensis: Modulation by Dopamine and cAMP | Zendy

Ji Ling Mo | Zendy; Pierre Devos | Zendy; G. Trausch | Zendy

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Active Absorption of Cl– and Na+ in Posterior Gills of Chinese Crab Eriocheir Sinensis: Modulation by Dopamine and cAMP

Author(s) -

Ji Ling Mo,

Pierre Devos,

G. Trausch

Publication year - 2003

Publication title -

journal of crustacean biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 54

eISSN - 1937-240X

pISSN - 0278-0372

DOI - 10.1651/c-2295

Subject(s) - eriocheir , ouabain , hemolymph , biology , dopamine , amiloride , sodium , gill , medicine , endocrinology , anatomy , biophysics , zoology , chemistry , biochemistry , fishery , organic chemistry , fish <actinopterygii>

Isolated posterior gills from the Chinese crab Eriocheir sinensis acclimated to freshwater (FW) were used for perfusion. Dopamine and dibutyryl cAMP (db-cAMP) induced a significant increase of 36Cl– influx. When amiloride, a specific sodium selective channels blocker, was added to the incubation saline, it induced a dramatic decrease of 22Na+ influx, and such an effect could be reversed by dopamine or db-cAMP. In the same experimental condition, we observed that ouabain added to the serosal side induced a marked decrease of the stimulating effect of db-cAMP on 22Na+ uptake across the epithelium to the hemolymph, suggesting that dopamine stimulates Na+ and Cl– influxes via cAMP and Na+/K+-ATPase pathways.

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