The growth of the net pen salmon farming industry and concurrent decline many wild populations have generated an ongoing call for research into potential role infectious agents associated with farming. Here, we describe a method to screen presence viral nucleic acids by sampling biological waste in vicinity farms. We collected samples adjacent 56 marine pens from five different companies, two f...

Netherlands report in the current issue of the Proceedings of the Royal Society B (published online) the first ever survey of freshly spawned fish eggs to cover the whole of the North Sea. The team highlight the former significance and current concern about cod stocks. “Rebuilding these stocks remains a key policy aim in Europe, the USA and Canada,” they argue. “Historically, the North Sea cont...

—Spawning date is a crucial life history trait in fishes, linking parents to their offspring, and it is highly heritable in salmonid fishes. We examined the spawning dates of coho salmon Oncorhynchus kisutch and chinook salmon O. tshawytscha at the University of Washington (UW) Hatchery for trends over time. We then compared the spawning date patterns with the changing thermal regime of the Lak...

Multiple necrotic hepatitis lesions of 5 newly hatched broiler chicks in three flocks derived from two hatcheries were examined pathologically. The livers were brittle, and multiple yellowish or green foci were scattered on the surface and cut surface. The main histological finding was well demarcated multi-focal necrosis in the liver. Many Gram-positive large bacilli that reacted positively wi...

Viral pathogens are major causes of outbreaks in shrimp farms throughout the world. Monodon baculovirus has been known to be invasive in 85-100% of the shrimp hatcheries, in early or late stages of shrimp. Three-hundred and sixty juvenile of Litopenaeus vannamei with average (±SD) size of 7.99±0.54 g and 3600 post larvae 10-15 were prepared from Shrimp Research Station located in Helleh and 3 h...