Pacific ocean perch and Atka mackerel research in the water of Eastern Kamchatka in February-April 2022

Abstract

The aim: obtain data on the biology, distribution and abundance of the Pacific ocean perch, Atka mackerel, by-catch species, and monitor aquatic biological resources.

The methods: in the course of specialized fishing, fishing information was collected and ichthyological work was carried out according to the generally accepted methodology.

The newness: expeditionary work is a continuation of many years of scientific research on the state of commercial populations of valuable fish species in the western part of the Bering Sea and Eastern Kamchatka.

The results: concentrations of Pacific perch were noted in the area of the Shirshov Ridge, Cape Africa, Cape Kronotsky, Bering Island, where the average catch was 2,5–2,8 tons/hour trawling. The average length of the Pacific perch decreased from north to south from 37.2 cm to 34.3 cm, weight — from 718.8 g to 503.4 g. The main concentrations of the Atka mackerel were noted in the area of Cape Olyutorsky, Cape Afrika and Cape Kronotsky. Average catches ranged from 1.82 to 5.67 tons/hour trawling. The length of the Atka mackerel was 37.9–40.8 cm with a weight of 618.3–842 g.

The practical significance: the results of this work will be taken into account when developing and updating materials for forecasting the total allowable and recommended catch and recommendations for efficient fishing.