Russia: An assessment of the spawning approaches of White Sea herring in the Dvina Bay of the White Sea was carried out

Published 2024년 6월 24일

Tridge summary

Researchers from the Northern Branch of the All-Russian Research Institute of Fisheries and Oceanography have observed weaker spawning behaviors in herring in the White Sea, leading to a decrease in herring catches. The majority of catches included Asian smelt and White Sea herring, with a few whiting specimens found. The team also conducted water sampling to monitor the quality and quantity of ichthyo-, phyto- and zooplankton, as well as the temperature and salinity of the water. All data collected will be used to forecast fishing regulations and to evaluate the living conditions of aquatic life in the Dvina Bay area of the White Sea.

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Original content

During the research, specialists from the Northern Branch of the All-Russian Research Institute of Fisheries and Oceanography (VNIRO) noted rather weak spawning approaches of herring in this area, compared to the same period in previous years. The overwhelming majority of catches were Asian smelt and White Sea herring. The by-catch included river flounder, navaga, whitefish, polar flounder, and northern ruffed flounder. As last year, 1 specimen of whiting was noted - a boreal species not typical for the White Sea. Water sampling was also carried out to determine the quantitative and qualitative indicators of ichthyo-, phyto- and zooplankton, data on temperature and salinity were collected, and water samples were taken to determine the content ...

Source: Fishretail