Effects on schooling function in mackerel of sub-lethal capture related stressors: Crowding and hypoxia.

ABSTRACT: The selectivity of fishing gears with respect to fish species and size is important, both for fisheries management and fishing operations. Purse seining is an efficient, environmentally friendly fish capture methodology generally targeting single species aggregations, but once a fish school has been selected and surrounded by the seine, there is no selections for individual size, species or catch quantity. A common practice for evaluating the catch is to haul the seine to a point where physical samples or inspections of catch composition can be made. The release process is called slipping and may lead to mortality in the released fish. The objective of this study was to simulate a crowding situation and investigate how the behaviour was affected in response to increased fish density, decre

SUBMITTER: Handegard NO 

PROVIDER: S-EPMC5746257 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature