Piller 1995 J Exp Biol

Piller SC, Henry RP, Doeller JE, Kraus DW (1995) A comparison of the gill physiology of two euryhaline crab species, Callinectes sapidus and Callinected similis: Energy production, transport-related enzymes and osmoregulation as a function of acclimation salinity. J Exp Biol 198: 349-358.

» J. Exp. Biol. 198: 349-358.

Piller SC, Henry RP, Doeller JE, Kraus DW (1995) J Exp Biol

Abstract: Callinectes sapidus and C. similis co-occur in estuarine waters above 15 salinity. Callinectes sapidus also inhabits more dilute waters, but C. similis is rarely found below 15 . Previous work suggests that C. sapidus may be a better hyperosmoregulator than C. similis. In this study, energy metabolism and the levels of transport-related enzymes in excised gills were used as indicators of adaptation to low salinity. Oxygen consumption rates and mitochondrial cytochrome content of excised gills increased in both species as acclimation salinity decreased, but to a significantly greater extent in C. similis gills. In addition, C. similis gills showed the same levels of carbonic anhydrase and Na+/K+-ATPase activities and the same degree of enzyme induction during low-salinity adaptation as has been reported for C. sapidus gills. However, hemolymph osmolality and ion concentrations were consistently lower in C. similis at low salinity than in C. sapidus. Therefore, although gills from low-salinity-acclimated C. similis have a higher oxygen consumption rate and more mitochondrial cytochromes than C. sapidus gills and the same level of transport-related enzymes, C. similis cannot homeostatically regulate their hemolymph to the same extent as C. sapidus.

• O2k-Network Lab: US AL Birmingham Kraus DW

Labels: MiParea: Respiration, Comparative MiP; environmental MiP"Comparative MiP; environmental MiP" is not in the list (Respiration, Instruments;methods, mt-Biogenesis;mt-density, mt-Structure;fission;fusion, mt-Membrane, mtDNA;mt-genetics, nDNA;cell genetics, Genetic knockout;overexpression, Comparative MiP;environmental MiP, Gender, ...) of allowed values for the "MiP area" property. 

Tissue;cell: Lung;gill  Preparation: Intact Organ"Intact Organ" is not in the list (Intact organism, Intact organ, Permeabilized cells, Permeabilized tissue, Homogenate, Isolated mitochondria, SMP, Chloroplasts, Enzyme, Oxidase;biochemical oxidation, ...) of allowed values for the "Preparation" property. 

Regulation: Ion&substrate transport"Ion&substrate transport" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property., Redox state 

HRR: Oxygraph-2k 

Environmental Physiology; Toxicology