Structure and status of the European anchovy (Engraulis encrasicolus L., 1758) population, wintering off the coast of Abkhazia, in the 2020/2021 fishing season
This paper presents the results of analytical processing of the data collected over the course of the 2020/2021 fishing season on the ecological structure and fishing biological parameters of the European anchovy (E. encrasicolus L., 1758), wintering in the coastal waters of Abkhazia. The dynamic parameters of the Azov and Black Sea stocks of the European anchovy have also been analyzed, and a comparative analysis of the main biometric parameters has been carried out. This work is aimed at the assessment of the state of migratory anchovy aggregations in winter based on the results of the 2020/2021 fishing season and identification of the changes in the main population parameters with application of the generally accepted ichthyological methods. Following the data on the anchovy catches for the investigated period, this paper presents the dynamics of the length–age catch composition and intra-annual patterns of the anchovy fishery for the both forms (Black Sea and Azov Sea). The changes in population characteristics as evidenced from the catch composition as compared to the previous years were recorded, as well as the spatial distribution of the anchovy aggregations wintering in the Abkhazian Black Sea. The monthly absolute values are given for the catch sizes, as well as their fluctuations. The results showing the main dynamic changes in the wintering aggregations of anchovy have been obtained; they characterized the status of the anchovy population as stable with a tendency for low biomass development. It provides the basis for a conclusion that an increase in fishing effort in the next 2–3 years is unacceptable.
| Main Authors: | , |
|---|---|
| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2022
|
| Subjects: | Европейский анчоус, Азово-черноморская форма хамсы, Популяционно-биологические параметры, Размерно-возрастная структура, Динамика промысла, Engraulis encrasicolus, Azov and Black Sea form of anchovy, European anchovy, Length–age composition, ASFA_2015::A::Anchovy fisheries, ASFA_2015::F::Fishing seasons, ASFA_2015::P::Population structure, |
| Online Access: | http://hdl.handle.net/1834/42555 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|