A cell culture virus isolation procedure for infectious haematopoietic necrosis virus (IHNV) in the epithelioma papulosum cyprini cell line (EPC) is described. Ovarian fluid samples were collected from fish and tested for IHNV at 9 farms. The samples were inoculated in parallel on 24 h old EPC cell monolayers and in freshly trypsinized cells. The titre of the initial virus isolation and of firs...

We investigate the existence of an inverse relationship (IR) between farm size and technical efficiency in Philippine brackishwater pond aquaculture. The study is motivated by the exemption of fish ponds from the Comprehensive Agrarian Reform Laws and suggestions in the literature of inefficient management of fish farms. The analysis of technical efficiency is based on the estimation of a multi...

The genus Tenacibaculum encompasses several species pathogenic for marine fish. Tenacibaculum dicentrarchi and "Tenacibaculum finnmarkense" (Quotation marks denote species that have not been validly named.) were retrieved from skin lesions of farmed fish such as European sea bass or Atlantic salmon. They cause a condition referred to as tenacibaculosis and severe outbreaks and important fish lo...

The relationship between host size and infection, the site selection in the host and the association between health status and infection were studied in Hexamita salmonis (Moore, 1923) infected rainbow trout from commercial trout farms. During a 1 yr survey it was shown that the flagellates occur primarily In the smallest fry. The site occupied by the parasite is preferentially the pyloric regi...

Conservation management of wild fish may include fish health management in sympatric populations of domesticated fish in aquaculture. We developed a mathematical model for the population dynamics of parasitic sea lice (Lepeophtheirus salmonis) on domesticated populations of Atlantic salmon (Salmo salar) in the Broughton Archipelago region of British Columbia. The model was fit to a seven-year d...

Vietnam has become the second largest rice exporter in the world. However, the food security is still a local urgent necessity for the farmers in several parts of the country, particularly, in area where most of arable land used to low paddies have been transferred to uncertain crops causing many difficulties to farmers on their food need. The current and potential contributions of aquaculture ...