Aquaculture potential of Atlantic wolffish (Anarhichas lupus): stress and physiological responses to acute handling.

The Atlantic wolffish (Anarhichas lupus) is a cold-water species with the potential to diversify aquaculture in Northern countries. Few studies have investigated the stress physiology of Atlantic wolffish, and the current knowledge on stress in wolffish species is largely derived from the closely related spotted wolffish (Anarhichas minor). In the current study, Atlantic wolffish were exposed to handling stress mimicking common husbandry conditions in aquaculture such as repeated air exposure and net-chasing.

Low Holding Densities Increase Stress Response and Aggression in Zebrafish.

With laboratory zebrafish () being an established and popular research model, there is a need for universal, research-based husbandry guidelines for this species, since guidelines can help promote good welfare through providing appropriate care. Despite the widespread use of zebrafish in research, it remains unclear how holding densities affect their welfare. Previous studies have mainly evaluated the effects of holding densities on a single parameter, such as growth, reproductive output, or social interactions, rather than looking at multiple welfare parameters simultaneously.

Effects of Holding Density on the Welfare of Zebrafish: A Systematic Review.

The zebrafish is becoming an increasingly popular research animal around the world. Its welfare is affected by an array of environmental factors, such as food access and water quality. Holding density is an important welfare aspect, not least due to its interaction with other housing conditions.