...Chris M. Wood; Ilan M. Ruhr; Kevin L. Schauer; Yadong Wang; Edward M. Mager; M. Danielle McDonald; Bruce Stanton; Martin Grosell ABSTRACT Freshwater- and seawater-acclimated Fundulus heteroclitus were exposed to acute hypoxia (10% air saturation, 3 h), followed by normoxic recovery (3 h). In both...

...Kelly D. Hannan; Jodie L. Rummer ABSTRACT Aquatic acidification, caused by elevating levels of atmospheric carbon dioxide (CO 2 ), is increasing in both freshwater and marine ecosystems worldwide. However, few studies have examined how acidification will affect oxygen (O 2 ) transport...

...Alex R. Quijada-Rodriguez; Aaron G. Schultz; Jonathan M. Wilson; Yuhe He; Garett J. P. Allen; Greg G. Goss; Dirk Weihrauch ABSTRACT Freshwater organisms actively take up ions from their environment to counter diffusive ion losses due to inhabiting hypo-osmotic environments. The mechanisms behind...

... how physiological state (e.g. stress) of individuals may explain population-level and evolutionary processes ( Calow and Forbes, 1998 ; Ricklefs and Wikelski, 2002 ). Glucocorticoid Stress Starvation Passive integrated transponder tags Freshwater Brown trout Summary: Individual...

... is heavily reinforced with calcium, freshwater crustaceans have a high specific calcium requirement relative to other aquatic organisms. Daphnia , in particular, is an ideal crustacean for investigating the consequences of calcium decline because it is an abundant and important member of freshwater...

... was to examine features necessary for survival in the same apparent habitat, because the two species co-exist in riffle areas of freshwater streams. Both species are highly sensitive to water loss as a result of high water loss rates and depend on immersion in fresh water (hypo-osmotic) to maintain water stores...

...Jason S. Bystriansky; Patricia M. Schulte SUMMARY Few studies have examined changes in salmon gill ion transporter expression during the transition from seawater to freshwater, a pivotal moment in the salmonid life cycle. Seawater-acclimated Atlantic salmon were transferred to freshwater and blood...

... as well as maximal activities of enzymes of intermediary metabolism in tissues from marine and freshwater elasmobranchs,including: the river stingray Potamotrygon motoro (<1 mmol l –1 plasma urea); the marine stingray Taeniura lymma , and the marine shark Chiloscyllium punctatum (>300 mmol l –1...

...Sonja Amoser; Friedrich Ladich SUMMARY Several groups of fishes, among them two thirds of all freshwater fishes,have developed hearing specializations that enhance auditory sensitivity and broaden frequency ranges compared with hearing non-specialists (generalists),which lack such adaptations...

.... Four Na + /K + -ATPase α-isoforms were expressed in trout gills (α1a, α1b, α1c and α3). Na + /K + -ATPase α1c- and α3-isoforms were expressed at low levels in freshwater trout gills and their expression pattern did not change following transfer to 40% or 80% seawater. Na + /K + -ATPase α1a and α1b were...

..., non-migratory freshwater cyprinid. Extracellular recording from the olfactory bulb in vivo by electroencephalogram (EEG) demonstrated that the olfactory system is acutely sensitive to changes in external Ca 2+ within the range that this species is likely to encounter in the wild (0.05-3 mmol l -1...

... Young , S. , David C. T. & Gibson , G. ( 1987 ). Light measurement for entomology in the field and the laboratory . Physiol. Entomol . 12 , 373 – 379 . 10.1111/j.1365-3032.1987.tb00763.x Zaret , T. M. ( 1980 ). Predation and Freshwater Communities . New Haven...