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

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Número de documento:

WG-ASAM-2022/08

Autor(es):

S. Kasatkina and S. Sergeev

Presentado por:

Dr Svetlana Kasatkina (Federación de Rusia)

Aprobado por:

Dr Svetlana Kasatkina (Federación de Rusia)

Punto(s) de la agenda

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

Resumen

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.