The rapid growth of aquaculture raises questions about the welfare status of mass-produced species. Sagittal otoliths are primary hearing structures in the inner ear of all teleost (bony) fishes and are normally composed of aragonite, though abnormal vaterite replacement is sometimes seen in the wild. We provide the first widespread evaluation of the prevalence of vaterite in otoliths, showing ...

Early research on farmed mink was predominantly concerned with increased productivity; however, in recent years there have been an increasing number of studies related to welfare. The biology offeral mink has also become better understood, and such knowledge can aid in the assessment of welfare on farms, or in the interpretation of problems related to captivity. This paper is a comprehensive re...

Bivalve aquaculture introduces high densities of farmed organisms to the natural environment with potential consequences on a number of ecosystem processes, including modification of nutrient fluxes (e.g. NH4, NOX, PO4, and Si(OH)4) and benthic respiration, and may impact benthic communities. Infaunal clam culture may influence the environment due to the clams themselves [their metabolic proces...

Michel Foucault's work traces shifting techniques in the governance of humans, from the production of 'docile bodies' subjected to the knowledge formations of the human sciences (disciplinary power), to the facilitation of self-governing agents directed towards specified forms of self-knowledge by quasi-therapeutic authorities (pastoral power). While mindful of the important differences between...

institutes located in Tromsø, Narvik and Alta. The Norut Group has 220 employees whose applied research and development encompasses a wide variety of interdisciplinary fields. Each subsidiary institute has a specific research emphasis, but common to all is activity centered around the polar and Barents regions. Fiskeriforskning (Norwegian Institute of Fisheries and Aquaculture Research) conduct...

Current status of rabbit production worldwide The rabbit is now recognized as one of the world’s major livestock species, with an estimated global yield of one million tonnedyear of rabbit carcass (Lebas et al. 1986). Europe remains the centre of world meat-rabbit production with the USSR, France, Italy and Spain supplying approximately two-thirds of this estimated world production. In the UK t...

The bioaccumulation of alkali and alkaline earth metals such as Na, K, Ca and Mg were studied in the fry of rohu, Labeo rohita (Ham.), a species of freshwater aquaculture importance in India. The experiments were conducted in laboratory conditions exposing the rohu eggs up to fry stage in one experiment; and fry to advanced fry stage in other experiment, to different concentrations of the salts...

Salmon aquaculture generates good output (i.e., salmon) and bad output (e.g., pollution). A joint production function approach is applied to model both outputs simultaneously. Two environmental production technologies are specified, namely, regulated and unregulated technologies. Two production functions with different mapping rules are applied. Pollution abatement costs are estimated based on ...