The invasion success of gibel carp (Carassius gibelio) depends on demographic and competitive traits. major biological trait responsible for the invasiveness C. gibelio is mode reproduction. Apart from sexual reproduction, which typical in fish, a unique cyprinid species able to reproduce through asexual gynogenesis, also known as sperm-dependent parthenogenesis, observed all-female populations...

In Georgia, crucian carp Carassius carassius (Linnaeus, 1758) was known from only one locality after Kesslers record (1877–1878) with no new findings until 1985. Since then C. carassius rapidly and simultaneously invaded almost all water bodies of Georgia. In 2004, it was for the first time noted that this invasive Carassius sp. could not be a C. Carassius, but was a form of Carassius gibelio (...

The influence of increasing concentrations of copper sulphate (CuSO4.5H2O) on Crucian carp (Carassius gibelio) was investigated. The clinical signs, the morphologic changes in the spleen and gills, and the alterations in red blood cells were analyzed. The concentrations tested were respectively 0.1, 0.5, 1.0 and 2.0 mg.l-1. Various clinical symptoms were observed resulting from damaged oxygen t...

A rapid and sensitive loop-mediated isothermal amplification (LAMP) assay for Cyprinid herpesvirus 2 (CyHV-2) detection in gibel carp was developed. Following cloning and sequencing of the putative DNA helicase gene of CyHV-2 isolate from China, a set of four specific primers was designed based on the sequence. The MgCl2 concentration and the reaction temperature were optimized to 6 mM, 64°C, r...