This article focuses on a statistical analysis of the corona virus disease 2019 (COVID-19)
data that appeared until November 31, 2020 in Poland. The studied database, expressed in …

Introduction: Carp oedema virus (CEV) is a relatively understudied poxvirus. It exhibits an
affinity for gill and skin epithelial cells. Investigations were conducted into selected aspects of …

Introduction: The aim of the study was to determine the transmission potential of carp edema
virus (CEV) and koi herpesvirus (KHV) introduced to Europe by the invasive round goby (…

Introduction: Herpesviruses are common agents in animals of the aquatic environment.
They infect many species of fish but only lead to disease in one or two species. Nevertheless, …

Background. White sturgeon iridovirus (WSIV) is one of the most serious threats for sturgeon
aquaculture as the mortality in juvenile individuals can reach 95%. At the turn of the century …

Introduction: White sturgeon iridovirus (WSIV) disease is caused by a virus of the eponymous
family and is mostly triggered by stressful environmental conditions, ie. high rearing density…

The work is a source material for organizations dealing with the management of the aquatic
environment, including regulating the population of species that pose a real threat to …

Background Sympatric speciation along ecological gradients has been studied repeatedly,
in particular in freshwater fishes. Rapid post-glacial ecological divergence has resulted in …

The Community Action Plan requests EU member states to implement measures that ensure
the recovery of the severely depleted European eel stocks. One of the main threats is posed …

Koi herpesvirus (KHV) is a highly contagious virus that causes KHV disease (KHVD) inducing
high mortality in carp and koi (Cyprinus carpio L.). In the late stage, latency occurs with …