A fundamental consideration for the conservation of a species is the extent of its native range, that is, regions naturally colonized. However, both natural processes and human-mediated introductions can drive species distribution shifts. Ruling out the human-mediated introduction of a species into a given region is vital for its conservation, but remains a significant challenge in most cases. ...

Aeromonas hydrophila is one of the most important fish pathogens in China. Here, we report complete genome sequence of a virulent strain, A. hydrophila JBN2301, which was isolated from diseased crucian carp.

Gibel carp (Carassius auratus gibelio) is an important economic fish species in China, but its development seriously restricted by the crucian hematopoietic organ necrosis caused Cyprinid herpesvirus 2 (CyHV-2). Gill key portal for CyHV-2 primary invasion, and gill immune barrier first defense line against infection. Our previous studies showed that dietary poly-β-hydroxybutyrate (PHB) suppleme...

Abstract The northern section of the Caspian Sea and lower reaches Zhaiyk (Ural) River is an important fishery for Kazakhstan. In present study, a total 1597 individuals ten fish species were analysed. caught over three years, from 2018 to 2020. For each studied – Abramis brama , Alosa saposchnikowii Atherina boyeri caspia Carassius gibelio Chelon auratus Cyprinus carpio Leuciscus aspius Rutilu...

Predator cues and diet, when studied separately, have been shown to affect body shape of organisms. Previous studies show that the morphological responses to predator absence/presence and diet may be similar, and hence could confound the interpretation of the causes of morphological differences found between groups of individuals. In this study, we simultaneously examined the effect of these tw...

Costly anti-predator traits tend to be expressed only in high-predation conditions. For the cyprinid fish genus Carassius, deeper body depth is more adaptive to avoid predation by gape-limited piscivorous fish, but it raises swimming costs. It is therefore predicted that the relative body depth will decrease when the prey fish has reached a size larger than the predator gape-size. This predicti...