Comparison analysis of krill length compositions from catches obtained by research and commercial gears

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Numéro du document:

WG-ASAM-2022/08

Auteur(s):

S. Kasatkina and S. Sergeev

Soumis par:

Svetlana Kasatkina (Fédération de Russie)

Approuvé par:

Svetlana Kasatkina (Fédération de Russie)

Point(s) de l'ordre du jour

WG-ASAM-2022 - 2 - Standardised procedures for survey design, data analysis and quality control of acoustically derived areal krill biomass estimates to CCAMLR

WG-ASAM-2022 - 4.1 - Survey on nominated transects by fishing vessels

Résumé

In this paper, the authors consider inter-vessel variability in the length composition of krill in catches from research and commercial catches in the context of gear designs and the efficiency of observer sampling design in krill fishery. Analysis was provided using data obtained in the local fishing ground within several days to exclude any influence of krill drift on results obtained under examples of fishing grounds in Subarea 48.1 and 48.2.