Berberine has long been considered as an antibiotic candidate in aquaculture. However, studies regarding its effects on drug-metabolizing enzymes in fish are still limited. In the present study, the effects of berberine on cytochrome P4501A (CYP1A) and CYP3A in crucian carp were investigated. Injection of different concentrations of berberine (0, 5, 25, 50, and 100mg/kg) inhibited the CYP1A mRN...

The function of algae extract (AE) in fishmeal (FM) substitution with plant proteins the diets Gibel carp (Carrassius auratus gibeilo) was investigated during a 56-day trial. Diets 1 and 2 contained 10% FM, 3 4 5% Diet 5 6 0% FM. In contrast, 2, 4, were supplemented 0.2% AE. results showed that FM reduction inhibited growth performance, while AE supplementation alleviated inhibition. significan...

In many species of aquaculture importance, all-female and sterile populations possess superior productivity due to faster growth and a relatively homogenous size of individuals. However, the production of all-female and sterile fish in a large scale for aquaculture is a challenge in practice, because treatments necessary for gynogenesis induction usually cause massive embryonic and larval morta...

Aquatic invasions are one of the major threats for freshwater ecosystems. However, in developing countries, knowledge biological invasions, essential implementation appropriate legislation, is often limited if not entirely lacking. In this regard, identification potentially invasive non-native species by risk screening, followed a full assessment ranked as higher risk, enables decision-makers t...

ARNAUDOV, A. D., I. G. VELCHEVA and E. S. TOMOVA, 2008. Influence of copper and zinc on the erythrocyte-metric parameters of Carassius gibelio (pisces, Cyprinidae). I. influence of copper on the erythrocyte-metric parameters of Carassius gibelio (pisces, Cyprinidae). Bulg. J. Agric. Sci., 14: 557-563 Some metric parameters of the erythrocytes (big cell diameter Dc, small cell diameter dc, big n...

A method for purification of carp serum immunoglobulin (IgM), intended for the production of monoclonal antibodies, was described in the present study. Hybridomas that produce antibodies against IgM heavy chain were selected by ELISA method and Western blotting. Ascitic fluids were prepared and tested by the above mentioned methods, and their typing followed. Monoclonal antibody with the highes...

Both chemical phosphorus (P) immobilization and submerged macrophytes are widely used in lake restorations to reduce internal loading. Their combined effects seem much stronger than alone. However, benthivorous fish populations recover fast they may thus counteract the restoration effects. We conducted a mesocosm experiment with three densities of crucian carp (Carassius auratus gibelio) study ...