Sturgeon is one of the most important species of the Caspian Sea aquatics. Unfortunately, this species faces the threat of extinction today. This makes specific studies on any type of sturgeons more important than before. Studies like histological studies, radiology, and sonography, all require a complete understanding of the anatomy of this fish. Since pilot studies showed some misconceptions ...

Hyporthodus niveatus is an appreciated and valuable commercial fish species in the municipality of Niterói, state Rio de Janeiro, Brazil, due its excellent quality flesh. The constant presence helminths abdominal musculature, viscera serosa individuals has been subject complaints among local traders because economic losses to their repugnant aspect. Considering hygienic-sanitary importance sign...

Background: To assess the toxicity of environmental pollutants in fish, there are different physiological parameters including histology. This study aimed to investigate the effect of prebiotic dietary supplement on fish immune response after exposure to toxicant. Methods: The study was conducted in the Gorgan University of Agricultural and Natural Resources aquaculture Laboratory in 2017. Com...

Currently, one alternative for dietary fish oil (FO) in aquafeeds is vegetable oils (VO) that are devoid of omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFAs). Entirely new sources of n-3 LC-PUFA such as eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids through de novo production are a potential solution to fill the gap between supply and demand of these important nutrients. C...

bezoars are concretions of foreign materials that impair gastrointestinal motility or cause intestinal obstruction in the stomach, small intestine or bowel of humans or animals. there are many types of them such as phyto, lacto and trichobezoars. although bezoars are not rare, multiple giant bezoars which totally fill the stomach lumen and have extension to the small intestine (rapunzel syndrom...

Three experiments were conducted to investigate the effects of dietary supplementation of a ß-(1,3)(1,6)-D-glucan derived from the yeast Saccharomyces cerevisiae, on growth performance parameters and intestinal functionality in mirror carp (Cyprinus carpio L.) and on progression of a chronic, pre-existing mycobacteriosis in zebrafish (Danio rerio). The 1 experiment revealed that mirror carp fed...

In the present study, zebrafish (Danio rerio) were fed casein/gelatin-based diets containing either 19% Bt (Bacillus thuringiensis)-maize or its parental non-Bt (nBt)-maize control for two generations (F0: sixty fish; F1: forty-two to seventy fish per treatment). The study focused on growth and reproductive performance, liver CuZn superoxide dismutase (SOD) enzyme activity, gene transcript leve...

The ability of euryhaline Mozambique tilapia to tolerate extreme environmental salinities makes it an excellent model for investigating iono-regulation. This study aimed to characterize and fill important information gap of the expression levels of key ion transporters for Na(+) and Cl(-) in the gill and esophageal-gastrointestinal tract of Mozambique tilapia acclimated to freshwater (0 ppt), s...

Volcanic ash of Mount Sinabung enters the Lau Borus River. One biota in river that is affected by volcanic Mahseer fish. This study aims to determine LC50 from exposure fish, water quality, and tissue histology The concentrations for toxicity tests were 0 mg/L, 66,000 87,000 115,000 152,000 mg/L. results probit analysis showed values at time 24, 48, 72, 96 hours 135,249 106,741 72,210 68,798 re...

This study was aimed to investigate the infection of internal parasites Dentex macrophthalmus in Syrian marine coastal waters. A total 409 individuals were collected from Ras Al-Basit north Tartus south following research stations: Al-Basit, different areas along Lattakia beach, Jableh and Tartous, during period January 2019 December 2020.
 The organs (stomach, intestine body cavity) all f...