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Hydrobiological Journal
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN Print: 0018-8166
ISSN Online: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v52.i1.10
pages 3-16

Peculiarities of Group Growth of Specimens in Populations of the Narrow-clawed Crayfish Astacus leptodactylus

A. V. Alekhnovych
Research-Practical Center of the National Academy of Sciences of Belarus on Bioresources, Minsk, Belarus

ABSTRACT

Dimensional and age structure of the narrow-clawed crayfish populations was analyzed. Crayfish growth is described by the Bertalanffy equation. Values of Bertalanffy growth parameters L and k are not species-specific, even in the same region and relatively close habitat conditions they can vary within wide limits. Very weak inverse relation was found between L and k, which makes invalid calculations of demographic characteristics on the basis of general equations of interrelation of populational and growth parameters. Growth constant k appears to be more informative than definitive body size (L).


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