The crawfish or 'crayfish' industry is continuing to grow in certain areas of the world. This article looks at production systems including equipment, monocropping and crop rotation systems.
Critical scientific reviews were carried out on the geographical occurrences and host ranges of the listed diseases in Council Directive 2006/88/EC as amended by Commission Directive 2008/53/EC (de-listing of spring viraemia of carp), and an expert assessment …
Every year, large amounts of hatchery-raised young salmonids are released into Swedish rivers and streams to compensate for losses in natural production. However these fish rarely survive. The University of Gothenburg has discovered why: the young fish are too…
