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ISSN  1684-792X

Issue 73

GENERAL BIOLOGY

UDK: 594.1

ALLOMETRIC GROWTH AND LIFE EXPECTANCY OF THE BIVALVE DIDACNA BARBOTDEMARNYI (GRIMM, 1877)

KHLOPKOVA Marina Vladimirovna


Allometric characteristics, at the second stage of mollusk growth, more accurately reflect the environmental condi-tions. In assessing the growth of mollusks, it is found that the largest annual increase in the length of the shell is ob-served up to 2,5 years. Revealed has been that Didacna barbotdemarnyi (Grimm, 1877) in moderate environmental conditions after two years of growth comes to maturity, and after 6 years the growth rate slows down. The formation of shells on the principle of negative allometry b < 1 is characteristic for the inhabitants of hard sand-shell and silt-shell soils.

Pages: 20 - 25

Date: 19.04.2019



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