Environmental enrichment is one of the methods for improving fish growth performance. In the present trial, the effects of both light color and music on growth performance and survival of goldfish (Carassius auratus) (initial mean weight: 4.15±0.08 g) were investigated for 2 months. Two light color treatments (red light and white light) and three music treatments (M0: without music, M30:30 min...

Background: Goldfishes are used as an ideal model for nutritional studies in larval and juvenile cyprinids. However, of the limited published data that is available on goldfish, protein requirements have varied from 29% to 53% goldfish larvae. So present study was undertaken determine growth performance C. auratus fed with different dietary lipid levels develop nutritionally balanced diets. Met...

EXPERIMENTS in our laboratory have demonstrated that memory fixation of a shockavoidance task in the goldfish can be blocked by puromycin or acetoxycycloheximide (AXM)$ when administered within 1 hr after training, but not at later times (AGRANOFF and KLINGER, 1964; DAVIS, BRIGHT and AGRANOFF, 1965; AGRANOFF, DAVIS and BRINK, 1965, 1966). The present studies report the effects of these compound...

The denatured catalytic polypeptide of (Na+,K+)-ATPase of goldfish brain was purified and identified as the 32P-labeled phosphoprotein. The protein served as immunogen for the preparation of rabbit antisera for immunohistochemical application t o goldfish tissue sections, using t h e peroxidase-antiperoxidase indirect method. Labeling in brain cross-sections appears primarily in fibers of the o...

The goldfish (Carassius auratus) visual pathway displays continuous growth and plasticity throughout life. Since homeobox genes are important transcriptional regulators in development, we searched for homeobox genes in the adult goldfish retina and brain. Using the PCR, we discovered a repertoire of homeobox sequences expressed in these tissues. In addition to isolating homeodomain sequences fo...

Goldfish (Carassius auratus) were reared in two recirculating systems initially under the same settings and UV conditions for period of 100 days. Halfway through the experiment, the supply of the UV irradiation in one the setting was discontinued. Several water quality parameters were monitored in both settings at the two different times. The results indicate that UV systems enhanced the growth...

Acute ammonia toxicity in vertebrates is thought to be characterized by a cascade of deleterious events resembling those associated with anoxic/ischemic injury in the central nervous system. A key event is the over-stimulation of neuronal N-methyl-D-aspartate (NMDA) receptors, which leads to excitotoxic cell death. The similarity between the responses to acute ammonia toxicity and anoxia sugges...

Abstract NaCl has beneficial effects in preventing fish disease. However, the of regulating growth and survival at different food supply levels under hypoxic conditions are unknown. Herein, on body weight, rate (SR), H 2 O content, lipid peroxidation, protein carbonylation, antioxidant (superoxide dismutase [SOD], catalase [CAT], glutathione peroxidase [GPX]) enzyme activities, (GSH) content we...

Three cytoplasmic proteins (designated alpha, beta and gamma) in the goldfish brain consistently incorporated more labeled valine in animals that had acquired a new pattern of swimming behavior than in untrained animals. The changes were identified by double labeling techniques ([3H]valine injected into trained experimental animals and [14C]valine into untrained controls) and by gel-electrophor...