STRUCTURAL PARAMETERS OF CRAYFISH COMMERCIAL STOCK IN THE KAKHOVKA RESERVOIR
Journal Title: Водні біоресурси та аквакультура - Year 2017, Vol 1, Issue
Abstract
The majority of the narrow-clawed crayfish population in the Kakhovka reservoir during the study period was represented by specimens of 95-115 mm in length, the mean length in catches varied from 102.0 to 106.7 mm, weight – from 45.7 to 47.8 g. The analysis of specific weight accumulation indicates that crayfish biomass culmination was due to length classes of 110-120 mm. Mean individual fecundity in modal length groups of females was 239.5-357.4 eggs. The majority of population fecundity was specimens of 110-119 mm in length that confirmed the necessity for the limitation of commercial fishing pressure on medium age groups. For this, the minimum legal size for crayfish should be increased to 11 cm.
Authors and Affiliations
I. L. Zakharchenko, M. L. Maksimenko
Keywords
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