## Abstract Both male and female blue crabs were shown to hyperosmoregulate efficiently at low salinities. The posterior gill pairs, particularly numbers six and seven, exhibited the highest specific activity of Na, KβATPase in crabs adapted to fullβstrength seawater. When the crabs were acclimated
Role of gill Na+ + K+ -dependent ATPase in acclimation of blue crabs (Callinectes sapidus) to low salinity
β Scribed by Towle, David W. ;Palmer, Gloria E. ;Harris, John L.
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 505 KB
- Volume
- 196
- Category
- Article
- ISSN
- 0022-104X
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract The kinetic properties of a microsomal gill (Na^+^, K^+^) ATPase from the blue crab, __Callinectes danae__, acclimated to 15 β° salinity for 10 days, were analyzed using the substrate pβnitrophenylphosphate. The (Na^+^, K^+^)βATPase hydrolyzed the substrate obeying Michaelian kinetics at
Juvenile blue crabs, Callinectes sapidus, extensively utilize oligohaline and freshwater regions of the estuary. With a presumptively larger surface-area-to-body weight ratio, juvenile crabs could experience osmo-and ionoregulatory costs well in excess of that of adults. To test this hypothesis, cra
Although Na+ +K+-dependent ATPase, the enzymatic equivalent of the sodium pump, is thought to be restricted to the basolateral membrane of nearly all ion-transporting epithelial cells, its absence from basolateral membranes of crustacean epithelia andlor its presence in apical membranes have been su
## Abstract Carbonic anhydrase (CA) induction in the gills of the euryhaline blue crab, __Callinectes sapidus__, was measured in response to lowered environmental salinity. Simultaneous measurements of ornithine decarboxylase (ODC) activity were made in gills and nonbranchial tissues to determine w
## Abstract The enzymatic properties of membraneβbound Na^+^ + K^+^βATPase from gills of killifish acclimated to fresh water, to 16β° sea water, or to 30β° sea water appear to be identical, indicating that the same enzyme may function to absorb Na^+^ in low salinities and excrete Na^+^ at the gills i