Previous attempts to characterize the molecular events that support successful regeneration of axotomized goldfish retinal ganglion cells (RGCs) have led to the discovery of an acidic protein doublet in retina that displays an increased incorporation of 35S-methionine following axotomy, and is known to be axonally transported within the optic nerve. This protein is termed p68/70, reflecting its...

This study was performed in order to investigate the effects of taurine on cadmium poisoning in muscle, gill, and bone tissues of wild goldfish. For this experiment, 80 wild goldfish were divided into four experimental groups: 0.3 mg/L of cadmium and 0 mg/L of taurine (Group I), 0.3 mg/L of cadmium and 20 mg/kg of taurine (Group II), 0.3 mg/L of cadmium and 40 mg/L of taurine (Group III), and 0...

L-glutamate, the main excitatory synaptic transmitter in the retina, is released from photoreceptors and evokes responses in second-order retinal neurons (horizontal, bipolar cells) which utilize both ionotropic and metabotropic types of glutamate receptors. In the present study, to elucidate the functional roles of glutamate receptors in synaptic transmission, we have identified a specific ion...

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 of hepatocytes from trout (Oncorhynchus mykiss) and rat (Rattus rattus). Cell volume was studied by video- and fluorescence microscopy, while K(+) fluxes were assessed by measuring unidi...

The whole brain atlas of the eel was constructed in the first place by Klüver-Barréra’s staining. Eighty one nuclei and thirty fiber tracts were identified in the present study. Basically, the brain topology of the eel was similar to that of the rainbow trout, the goldfish, the zebrafish, and the catfish. However, some details differed from those of other teleosts. The parvocellular preoptic nu...

Fishes can regenerate lateral line and inner ear sensory hair cells that have been lost following exposure to ototoxic antibiotics. However, regenerative capabilities following noise exposure have not been explored in fish. Moreover, nothing is known about the functional relationship between hair cell damage and hearing loss, or the time course of morphological versus functional recovery in fis...

Invasive alien species (IAS) are major drivers of global biodiversity loss, and the poorly regulated international pet trade is a source emerging future invaders. Predictions likely ecological impacts risks such IAS have been significantly enhanced in recent years with new metrics, which require application to many more actual potential IAS. Hence, this study assesses two readily available spec...

A 60-day indoor growth trial was carried out to investigate the effects of dietary replacement fish meal (FM) protein with black soldier fly (Hermetia illucens) larvae (BSFLM) at graded concentrations on bio-growth parameters, whole-body chemical composition, digestive enzyme activity, muscle-growth-related gene expression and haemato-biochemical responses goldfish (Carassius auratus) juveniles...

Nesfatin-1 is an anorexigen in goldfish. In the present study, we provide novel data indicating the presence and regulatory effects of nesfatin-1 on the hypothalamo-pituitary-ovarian (HPO) axis of goldfish. Nucleobindin-2 (NUCB2)/nesfatin-1-like immunoreactive (ir) cells are present in the hypothalamus and in the pituitary, suggesting a hypophysiotropic role for nesfatin-1. NUCB2/nesfatin-1-lik...

The present research was aimed to study the effects of different sources of carotenoids and their varying concentrations on the reproductive functions of goldfish. The study was carried out in seven treatments with three replicates at the Bony Fish Hatchery Complex (Rasht, Iran) from December 2011 to May 2012. Experimental diets containing 50, 100, and 150 mg kg-1 astaxanthin and 50, 100, and 1...