Aspects of Osmotic and Ionic Regulation inCorophium Volutator(Pallas)
- 1 June 1968
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of the Marine Biological Association of the United Kingdom
- Vol. 48 (3) , 769-781
- https://doi.org/10.1017/s0025315400019263
Abstract
Experiments have been made to elucidate the problem of hyperosmotic regulation in the mud-dwelling euryhaline amphipod,Corophium volutator.The animal produced urine hypo-osmotic to the blood when acclimatized to low salinities, and isosmotic urine at salinities above 20%. The restricted permeable areas of the cuticle have been localized by silver staining. Over a range of salinities from 1 to 35 %C. volutatorwas found to maintain Na+, K-−, Ca2+, Cl-−, more concentrated than the medium, and Mg2~less concentrated. The importance of these mechanisms in assisting hyperosmotic regulation is discussed.Keywords
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