Parasites, behaviour and welfare in fish

In this review, three reasons are identified as to why it is important to focus on the role of parasites and the diseases they cause to understand the interrelationships between behaviour and welfare in fish. First, many of the behaviours exhibited by fish – including their habitat selection, mate choice and shoaling decisions – are […]

The effect of morphine on changes in behaviour and physiology in intraperitoneally vaccinated Atlantic salmon (Salmo salar)

Abstract Granulomatous peritonitis is often induced by intraperitoneal vaccination in fish. Peritonitis is a very painful condition in mammals, but little is known about how fish experience this condition. In a previous experiment we found increased latency to eat and a tendency to decreased swimming during feeding in vaccinated salmon housed in groups of three. […]