Physiological and flesh quality consequences of pre-mortem crowding stress in Atlantic mackerel (Scomber scombrus).

ABSTRACT: In commercial wild capture pelagic fisheries it is common practice to crowd catches to high densities to allow efficient pumping onboard. Crowding during the final stages of purse seine capture for small pelagic species often results in intense and sustained behavioural escape responses. Such a response may trigger a shift in energy production from aerobic to anaerobic pathways and result in metabolic acid accumulation and exhaustion of intracellular reserves of ATP. Where there is insufficient time or opportunity to recover to physiological equilibrium before death, pre-mortem stress may be an important determinant of fillet quality, as has been shown for a variety of farmed fish species. However, there is currently a lack of knowledge related to the flesh quality implications of capture

SUBMITTER: Anders N 

PROVIDER: S-EPMC7018012 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature