Active Transport and Sodium Fluxes at Moult in the Amphipod, Gammarus Duebeni
Open Access
- 1 December 1969
- journal article
- Published by The Company of Biologists in Journal of Experimental Biology
- Vol. 51 (3), 591-605
- https://doi.org/10.1242/jeb.51.3.591
Abstract
1. The sodium fluxes of individual Gammarus duebeni, which moulted in sea water, have been followed daily from the morning following moult for at least 6 days. 2. Sodium influx from sea water declined from 15.1µM/animal/hr. on the first morning after moult to 1.7µM/animal/hr. by the tenth day after moult. 3. Sodium influx from 10 mM/l. NaCl plus sucrose solution isotonic with sea water declines from 4.48µM/animal/hr. to 0.14µM/animal/hr. in inter-moult animals. 4. Thionine inhibits over 90% of the influx from 10 mM/l NaCl plus isotonic sucrose on the first day after moult, and this, together with other evidence, suggests that the major part of the influx from this medium is due to active sodium uptake. The rate of active uptake is comparable with, or faster than, the rate of uptake by animals acclimatized to fresh water. 5. The influx occurs primarily across the body surface. It is suggested that the high level of sodium uptake is associated with the water uptake which occurs at moult.This publication has 18 references indexed in Scilit:
- Length Increments during Terminal Molt of the Female Blue Crab, Callinectes sapidus, in Different Salinity EnvironmentsChesapeake Science, 1964
- OSMOTIC REGULATION IN MARINE AND FRESH-WATER GAMMARIDS (AMPHIPODA)The Biological Bulletin, 1963
- Sodium Balance in Eriocheir Sinensis (M. Edw.). The Adaptation of the Crustacea to Fresh WaterJournal of Experimental Biology, 1961
- Ionic regulation in the crab Carcinus maenas (L.) in relation to the moulting cycleComparative Biochemistry and Physiology, 1960
- The Absorption of Sodium Ions by the Crayfish, Astacus Pallipes LereboulletJournal of Experimental Biology, 1959
- The Mechanism of Osmotic Regulation in Artemia Salina (L.): The Physiology of the BranchiaeJournal of Experimental Biology, 1958
- THE MOLTING CYCLE OF THE SPINY LOBSTER, PANULIRUS ARGUS LATREILLE. I. MOLTING AND GROWTH IN LABORATORY-MAINTAINED INDIVIDUALSThe Biological Bulletin, 1954
- The Ecology of Gammarus duebeni Lilljeborg and its Occurrence in Fresh Water in Western BritainJournal of Animal Ecology, 1954
- Studies on Adaptation to Salinity in Gammarus SppJournal of Experimental Biology, 1940
- Changes in the Osmotic Pressure and Water Content of Crabs during the Molt CyclePhysiological Zoology, 1928