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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Печать: 0018-8166
ISSN Онлайн: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v55.i4.20
pages 16-25

Variability in the Numbers and Dimensional-Mass and Phenotypic Structure of Mytilus galloprovincialis Benthic Populations in the Coastal Waters of the Northwestern Part of the Black Seaf

I. A. Govorin
Institute of Marine Biology National Academy of Sciences of Ukraine Odessa, Ukraine

Краткое описание

The structure of Mytilus galloprovincialis (Lamarck, 1819) populations was investigated in three areas of water of the northwestern part of the Black Sea (near Adzhiyask Cape, near the estuary of the Grigoryevskiy liman, and near the Odessa coast) in summer 2016 and from autumn 2016 until spring 2017 (October - April). Seasonal variability in the numbers of mollusks, in their dimensional and phenotypic composition in the populations, and in the total and individual mass of animals, including the ratio between various components of body mass, was investigated at each station. 1t has been shown that in wintertime the numbers and biomass of mollusks varied over a wide range, which was accompanied by a decrease in mussel numbers and in the individual mass of animals. 1n this case, the phenotypic structure of animal populations and their dimensional composition remained almost unchanged from October until April (near Adzhiyask Cape) or changed insignificantly. 1n this case, the ratio between the raw and dry mass of the animal changed insignificantly, which is indicative of almost the same trophic conditions and fatness of the animals in the studied regions. At the same time, the mussels taken near Adzhiyask Cape were characterized by the lowest mass of their shells, which can be conditioned by a low degree of salinity of coastal marine waters subjected to the influence of the runoff of the Southern Bug and Dnieper rivers.


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