... phenotypes associated with O 2 uptake and subsequently reduce the critical O 2 tension ( P crit ) of the rate of O 2 uptake ( Ṁ O 2 ). We investigated this by determining P crit values for goldfish exposed to short (∼24 min), typical (∼84 min) and long (∼480 min) duration P crit trials to represent different...

...Ge Gao; Christopher D. Moyes ABSTRACT Cold acclimation in fish typically increases muscle mitochondrial enzymes. In mammals, stressors that increase mitochondrial content are mediated though transcriptional regulators, including nuclear respiratory factor-1 (NRF-1). Focusing on the goldfish gene...

... freshwater fish differing in their sensitivity to high environmental ammonia (HEA). The highly ammonia-sensitive salmonid Oncorhynchus mykiss (rainbow trout), the less ammonia-sensitive cyprinid Cyprinus carpio (common carp) and the highly ammonia-resistant cyprinid Carassius auratus (goldfish) were exposed...

... produced by heterospecifics, we investigated possible differences in the odour of bile between the sexes and among different species – the eel ( Anguilla anguilla ), goldfish ( Carassius auratus ) and Mozambique tilapia ( Oreochromis mossambicus ) – using the electro-olfactogram (EOG). We also identified...

.... The purpose of this study was to examine the possibility that hypoxia-induced activation of cardiac K ATP channels, whether in the sarcolemma (sarcK ATP ) or mitochondria (mitoK ATP ),enhances viability in cardiac muscle cells from a species highly tolerant of low oxygen environments, the goldfish Carassius...

.... Goldfish Carassius auratus , a close relative to crucian carp, previously kept at 25°C,were exposed to 15°C and 7.5°C. At 7.5°C the respiratory surface area of its gills was reduced by development of an interlamellar cell mass as found in normoxic crucian carp kept at 10-20°C. Thus, both species alter...

... during hypoxia in a species with a high degree of tolerance to low oxygen environments: the goldfish ( Carassius auratus ). Conventional intracellular and patch-clamp recording techniques were used to record responses from excised ventricles or isolated ventricular myocytes and inside-out patches...

... described in the central lateral line system of teleost fish at levels higher than the medulla, and evidence for midbrain lateral line maps in fish is still weak. We found two classes of units with different response patterns in the central lateral line nucleus in the torus semicircularis of the goldfish...

..., we provide a quantitative analysis of the recovery of C-starts that occur in adult goldfish after spinal cord injury. In addition, we include a qualitative analysis of the return of targeted feeding and equilibrium. Whole spinal cord crushes near the junction of the brain and spinal cord...

...S. H. Rolen; P. W. Sorensen; D. Mattson; J. Caprio SUMMARY Electrophysiological responses of goldfish olfactory receptor neurons(ORNs) and goldfish behavioral responses to polyamines were investigated in vivo . Electro-olfactogram (EOG) recordings indicated that polyamines (putrescine, cadaverine...

...M. V. Espelt; P. N. Mut; G. Amodeo; G. Krumschnabel; P. J. Schwarzbaum SUMMARY The relationship between cell volume and K + transmembrane fluxes of goldfish ( Carassius auratus ) hepatocytes exposed to anisotonic conditions or energetic limitation was studied and compared with the response...

... this phenomenon is restricted to species that normally experience large fluctuations in external ion concentrations (e.g. moving from sea water to fresh water) or is present in a much wider range of species, we investigated olfactory Ca 2+ sensitivity in the goldfish ( Carassius auratus ), which is a stenohaline...

... to a 50 Hz vibrating sphere of single units in the medial octavolateralis nucleus (MON) in goldfish Carassius auratus . The MON is the first site of central processing of lateral line information. Three types of units were distinguished. Type I units ( N =27) were flow-sensitive; their ongoing discharge...

...Gerhard Krumschnabel; Claudia Manzl; Pablo J. Schwarzbaum SUMMARY Mechanisms of intracellular pH (pHi) regulation were investigated in anoxia-tolerant hepatocytes from goldfish Carassius auratus , and compared to the situation in the anoxia-intolerant hepatocytes from trout Oncorhynchus mykiss...

... pars distalis of the goldfish pituitary gland, suggesting that GABA may be important for the control of growth hormone release in this species. An in vitro assay for GABA-transaminase activity demonstrated that the pituitary is a site for the metabolism of GABA to succinic acid. In vitro , GABA...

...Wolf Hanke; Christoph Brücker; Horst Bleckmann ABSTRACT Wakes caused by swimming goldfish ( Carassius auratus ) were measured with a particle image velocimetry system and analyzed using a cross-correlation technique. Particle velocities in a horizontal plane (size of measuring plane 24 cm×32 cm...

...Gerhard Krumschnabel; Pablo J. Schwarzbaum; Johannes Lisch; Christina Biasi; Wolfgang Wieser ABSTRACT The oxygen-dependence of cellular energetics was investigated in hepatocytes from goldfish Carassius auratus (anoxia-tolerant) and rainbow trout Oncorhynchus mykiss (anoxia-intolerant). In goldfish...

..., we investigated the extent to which the observed thermal dependence of locomotor performance of fish simply reflects changes in the biophysical properties of the aqueous medium independent of the changing physiology of the animals. C-starts (escape swimming) of adult goldfish ( Carassius auratus...

...Wenbin Zheng; Curtis Strobeck; Norm Stacey ABSTRACT Previous studies in goldfish ( Carassius auratus ) showed that the oocyte maturation-inducing steroid 4-pregnen-17α,20β-diol-3-one (17,20βP) functions after release as a pheromone that increases male serum gonadotropin II (GtH II) concentration...

... to temperature-induced changes in intracellular diffusion coefficients ( D ) of the high-energy phosphate compounds ATP and creatine phosphate (PCr). Using 31 P nuclear magnetic resonance spectroscopy, we determined D PCr and D ATP in goldfish ( Carassius auratus ) skeletal muscle at 25 °C and 5 °C: D PCr...