beluga sturgeon ( huso huso linnaeus, 1758) fingerlings are released into the caspian sea for recruiting and enhancing commercial and recreational fishing purposes. these fingerlings are reared in fresh water, but released to the estuaries that may be caused mortalities due to acute osmotic stress. in this study, the fingerlings in whole ( in vivo ) or their gill tissue ( in vitro ) were expose...

The U.S. catfish industry is seeking production systems that are efficient, intensive, and profitable. Growing foodsize stocker-sized fish in the same pond attractive as it often difficult to obtain larger-sized stockers early each year. This case study evaluated performance economics of producing hybrid fingerlings in-pond raceway (IPRS) placed into four 0.4 ha ponds. Growout raceways (RW1/RW2...

artificial fertilizers and mainly organophosphate herbicide are used by farmers to enhance their crop and control pests. in order to investigate the effects of pretilachlore, fingerlings of caspian roach were exposed to a range of concentrations of toxin close to those of estuary for 96 h. due to movement of these fingerlings in a gradient of salinity from freshwater to brackishwater some physi...

Context Following recent major fish kill events, there is increasing interest in stocking Murray cod fingerlings to help stocks recover. Strategies that can increase post-release survival of stocked are important for conservation and may also have application other species.Aims The aim this work was evaluate whether pre-release predator recognition avoidance training conferred a advantage on (M...

 This study was conducted in two phases on sturgeon larvae and fingerlings produced from artificial breeding of five pairs of the Persian sturgeon (Acipenser persicus) broodstocks in Shahid Beheshti Hatchery in spring and summer 2006. Initially, 600 larvae were collected on 3 post days hatching (pdh) and 5 days after the onset of exogenous feeding. The second phase was conducted with 450 specim...

Comparative impact assessment of varying salinity concentration on growth, survival and blood chemistry tilapia fingerlings

Labeo rohita fingerlings were exposed to zinc metal toxicity (5 and 10 ppm) for duration of 5 and 15 days. The histological changes were studied in brain and liver of the treated fish. The brain tissues showed enlarged pyramidal cells with extensive vacoulation while severe necrosis, haemorrhage and degeneration of hepatocytes were witnessed in the liver tissues.

The pike-perch iridovirus (PPIV) was isolated in Finland from apparently healthy pike-perch fingerlings during routine disease surveillance. Our phylogenomic analysis revealed that PPIV is the first fish member of a clade of ranaviruses previously described from European and Chinese amphibians.

AIM The aim of this work was to evaluate the sensitivity of Pacu fingerlings (Piaractus mesopotamicus) by measuring the effects of median lethal concentration (LC50) of atrazine (ATZ - 28.58 mg/L) after acute exposure (up to 96 h). MATERIALS AND METHODS The fish were exposed to the LC50 of ATZ for 96 h (28.58 mg/L) in a static system. During the experiment, the fingerlings were randomly distr...

A 60-day feeding trial was conducted to examine the effect and interaction of dietary ractopamine hydrochloride (Rac) supplementation in diets with varied levels protein lipid for L. calbasu fingerlings. To attain this, fish body compositions, digestive metabolic enzyme activity were assessed. In total, nine fed triplicates four hundred five healthy Calbasu, Labeo fingerlings, based on suppleme...