Research on the hydrogeology of andesitic volcanic aquifers in subduction areas is reviewed. Andesitic aquifers are of high interest in volcanic arc islands and subduction zones, where they constitute a strategic water resource. This review gathers a compilation of worldwide results and case studies to propose a generic hydrogeological conceptual model (GHCM). It is based on the geological conceptual model splitting the volcan...

Massive mortalities of Carassius auratus (L.) occurred in a farm in France during summer 2014. Fish presented anorexia, loss of scales and large amounts of mucus on the gills. Necrosis of the distal tip of the filament and the lamellae, combined with fusion of the lamellae, was observed, as well as necrosis in the hematopoietic organs and in the digestive tract. The histological examination led to hypothesize the implication o...

Viral nervous necrosis ( VNN ) is a severe neuropathological disease affecting a broad variety of finfish species worldwide. The causative agents of VNN are small viruses with a bi‐segmented RNA genome known as betanodaviruses. At least four species with distinct but yet insufficiently characterized epidemiological features are recognized. The spread of VNN to an increasing number of host species, its wide geographic extent an...

A rhabdovirus was isolated in cell culture inoculated with tissue material from diseased grayling, T hymallus thymallus (L.), originating from a fish farm affected by a mortality episode in P oland. Diagnostics tests showed that the virus was not related to novirhabdoviruses known in E urope, nor to vesiculovirus‐like species, except p erch rhabdovirus ( PR hV) with which it shared moderate serological relations. However, RT ‐...

A betanodavirus associated with a massive mortality was isolated from larvae of tilapia, Oreochromis niloticus , maintained in fresh water at 30 °C . Histopathology revealed vacuolation of the nervous system, suggesting an infection by a betanodavirus. The virus was identified by indirect fluorescent antibody test in the SSN1 cell line and further characterized by sequencing of a PCR product. Sequencing of the T4 region of the...

Sleeping disease (SD) is a serious disease of rainbow trout, Oncorhynchus mykiss , reared in fresh water caused by sleeping disease virus (SDV). In this study a detailed clinical, histological, virological and serological description of the experimental reproduction of SD in 1‐year‐old rainbow trout exposed to SDV was carried out. Two hundred disease‐free fish were intraperitoneally inoculated with a SDV isolate and 100 fish w...