Spatial distribution of cod (Gadus morhua) eggs and larvae according to PINRO ichthyoplankton surveys
https://doi.org/10.36038/0234-2774-2025-26-4-27-38
EDN: YDWIVM
Abstract
The materials of the ichthyoplankton survey, which was conducted in 1959–1993 in the breeding and drift areas of juveniles of the main commercial fish of the Barents Sea, have recently been digitized, which made it possible to process the primary data using a complex of modern computer programs. The indices of the abundance of cod eggs and larvae (horizontal catches with and without weighing according to the number of individuals caught at the stations) were considered in order to compare them with the biomass of the cod spawning stock (SSB), thermal conditions of waters and plankton biomass. The centroids of the distribution of the indices of the number of cod individuals in the early stages of development were calculated according to the survey data from April-May and June-July, which were compared with the same biotic and abiotic indicators.
About the Authors
N. A. Yaragina
Polar branch of the State Scientific Centre of the «VNIRO»
Russian Federation
Russian Federation
183038; Murmansk
V. A. Ivshin
Polar branch of the State Scientific Centre of the «VNIRO»
Russian Federation
Russian Federation
183038; Murmansk
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Review
For citations:
Yaragina N.A., Ivshin V.A. Spatial distribution of cod (Gadus morhua) eggs and larvae according to PINRO ichthyoplankton surveys. Problems of Fisheries. 2025;26(4):27-38. (In Russ.) https://doi.org/10.36038/0234-2774-2025-26-4-27-38. EDN: YDWIVM
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