Open AccessThe effect of experimental drill fluid on the vital activities of the bivalve mollusk Mytilus edulis L.
Author(s) -
S. S. Malavenda,
A. I. Belukhin,
A. O. Bogdanov,
A. A. Bannikov
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/539/1/012197
Subject(s) - mytilus , bivalvia , carboxymethyl cellulose , drill , biology , ecology , chemistry , mollusca , materials science , sodium , metallurgy , organic chemistry
The effect of two drill fluids on the survival rate and linear growth rate of bivalve mollusks Mytilus edulis has been studied. The standard water-based drill fluid includes barite and carboxymethyl cellulose, which are highly toxic substances. The main components of an experimental presumably biodegradable solution are the ground brown algae Saccharina latissima , inhabiting the coast of the Barents Sea, and ferrochrome lignosulfonate, which also applies to toxic components. The minimal concentration of a standard drill fluid led to the 100% death after 9 days of exposure; the experimental drill fluid did not affect the mortality of mussels at all. The mollusks exposed to the concentration of 5 and 10 g/L of experimental drill fluid have been characterized by a high relative linear growth. An experimental drill fluid that does not contain barite and carboxymethyl cellulose may be considered safe for marine bivalves; and its components seems to be easily degradable, since some of them may be used as a food source by some detritus-feeding invertebrates