Lipid composition in response to temperature changes in blue mussels Mytilus edulis L. from the White Sea

2015 ◽  
Vol 95 (8) ◽  
pp. 1629-1634 ◽  
Author(s):  
N.N. Fokina ◽  
T.R. Ruokolainen ◽  
I.N. Bakhmet ◽  
N.N. Nemova
Keyword(s):  
Fatty Acids ◽  
Mytilus Edulis ◽  
Lipid Composition ◽  
White Sea ◽  
Phospholipid Content ◽  
The White Sea ◽  
Temperature Changes ◽  
Blue Mussels ◽  
Response To Temperature

Alterations of membrane lipid composition (cholesterol, phospholipids and their fatty acids) in response to various temperature changes were studied in blue mussels Mytilus edulis L. from the White Sea. Lipid composition changes after acute temperature stress, especially a temperature drop, included a significant reduction of the membrane phospholipid content directly (1 h) after return to the initial temperature, which was presumably a consequence of a non-specific stress reaction in the mussels. A longer recovery period (24 h) as well as long-term temperature acclimation (14 days) induced changes in gill fatty acid composition (for instance, a rise in phospholipid unsaturated fatty acids under low temperature impact), indicating ‘homeoviscous adaptation’ to maintain the membranes in response to temperature fluctuations. Moreover, the gill cholesterol level in mussels varied especially at long-term temperature exposure.

scholarly journals Cooperative effect of crude oil and low salinity on the digestive glands lipid composition of the White Sea blue mussels Mytilus edulis

2016 ◽  
Vol 320 (3) ◽  
pp. 357-366 ◽  
Author(s):  
N.N. Fokina ◽  
I.N. Bakhmet ◽  
N.N. Nemova
Keyword(s):  
Crude Oil ◽  
Mytilus Edulis ◽  
Lipid Composition ◽  
White Sea ◽  
High Energy ◽  
Cooperative Effect ◽  
The White Sea ◽  
Blue Mussels ◽  
Low Salinity ◽  
Digestive Glands

The response of the organism to the pollutant impact is influenced by a variety of abiotic and biotic environmental factors that may have a synergistic or antagonistic effect on the biodegradation, accumulation, distribution and elimination of the xenobiotics. It is known that lipophilic organic contaminants including oil hydrocarbons can be accumulated in lipid-rich tissues of marine animals, thus causing changes in biosynthesis and transport of phospholipids and triacylglycerols, as well as in the physical state of biological membranes. The cooperative effect of crude oil and low salinity on digestive gland lipid composition of the White Sea blue mussels Mytilus edulis L. was studied in aquarium experiment. Low salinity (15‰) impact reflects on the lipid composition indicating high energy costs directed to acclimation of the mussels to new environmental conditions. However, the response of the lipid composition on the crude oil effect is almost not dependent on the ambient salinity, and is mainly determined by exposure duration to crude oil and its dose in aquarium water. On the third experimental day a significant increase in the cholesterol/phospholipids ratio and the subsequent its recovery to initial level possibly indicate the development of the protective compensatory mechanisms to provide low permeability of cell membranes in digestive glands under crude oil pollution. It was observed that the leading factor contributing the lipid composition modifications in blue mussel digestive glands is crude oil effect, mainly in its higher concentrations.

Long-term dynamics of blue mussel (Mytilus edulis L.) culture settlements (the White Sea)

Aquaculture ◽  
1996 ◽  
Vol 147 (3-4) ◽  
pp. 191-204 ◽  
Author(s):  
Nikolay V. Maximovich ◽  
Alexey A. Sukhotin ◽  
Yury S. Minichev
Keyword(s):  
Mytilus Edulis ◽  
White Sea ◽  
Blue Mussel ◽  
The White Sea

Biochemical response of blue mussels Mytilus edulis L. from the white sea to rapid changes in ambient temperature

2015 ◽  
Vol 51 (5) ◽  
pp. 378-387 ◽  
Author(s):  
N. N. Fokina ◽  
L. A. Lysenko ◽  
I. V. Sukhovskaya ◽  
E. A. Vdovichenko ◽  
E. V. Borvinskaya ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Mytilus Edulis ◽  
White Sea ◽  
Biochemical Response ◽  
The White Sea ◽  
Blue Mussels ◽  
Rapid Changes

scholarly journals Species identification based on a semi-diagnostic marker: Evaluation of a simple conchological test for distinguishing blue mussels Mytilus edulis L. and M. trossulus Gould

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0249587
Author(s):  
Vadim Khaitov ◽  
Julia Marchenko ◽  
Marina Katolikova ◽  
Risto Väinölä ◽  
Sarah E. Kingston ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Mytilus Edulis ◽  
Species Identification ◽  
Barents Sea ◽  
White Sea ◽  
The Arctic ◽  
The White Sea ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
The Baltic

Cryptic and hybridizing species may lack diagnostic taxonomic characters leaving researchers with semi-diagnostic ones. Identification based on such characters is probabilistic, the probability of correct identification depending on the species composition in a mixed population. Here we test the possibilities of applying a semi-diagnostic conchological character for distinguishing two cryptic species of blue mussels, Mytilus edulis and M. trossulus. These ecologically, stratigraphically and economically important molluscs co-occur and hybridize in many areas of the North Atlantic and the neighboring Arctic. Any cues for distinguishing them in sympatry without genotyping would save much research effort. Recently these species have been shown to statistically differ in the White Sea, where a simple character of the shell was used to distinguish two mussel morphotypes. In this paper, we analyzed the associations between morphotypes and species-specific genotypes based on an abundant material from the waters of the Kola Peninsula (White Sea, Barents Sea) and a more limited material from Norway, the Baltic Sea, Scotland and the Gulf of Maine. The performance of the “morphotype test” for species identification was formally evaluated using approaches from evidence-based medicine. Interspecific differences in the morphotype frequencies were ubiquitous and unidirectional, but their scale varied geographically (from 75% in the White Sea to 15% in the Baltic Sea). In addition, salinity-related variation of this character within M. edulis was revealed in the Arctic Barents Sea. For every studied region, we established relationships between the proportions of the morphotypes in the populations as well as between the proportions of the morphotypes in samples and the probabilities of mussels of different morphotypes being M. trossulus and M. edulis. We provide recommendations for the application of the morphotype test to mussels from unstudied contact zones and note that they may apply equally well to other taxa identified by semi-diagnostic traits.

scholarly journals Changes of Heart Rate and Lipid Composition in Mytilus Edulis and Modiolus Modiolus Caused by Crude Oil Pollution and Low Salinity Effects

2021 ◽  
Vol 11 (2) ◽  
pp. 46-60
Author(s):  
Igor Bakhmet ◽  
Natalia Fokina ◽  
Tatiana Ruokolainen
Keyword(s):  
Heart Rate ◽  
Crude Oil ◽  
Mytilus Edulis ◽  
Lipid Composition ◽  
Oil Pollution ◽  
Cardiac Activity ◽  
Blue Mussels ◽  
Low Salinity ◽  
Crude Oil Pollution ◽  
Modiolus Modiolus

Blue mussels, Mytilus edulis, inhabiting tidal zones, are naturally exposed to fluctuating environmental conditions (e.g., fluctuations in temperature and salinities), while horse mussels, Modiolus modiolus, live under relatively invariable shelf water conditions. The present investigation tested the hypothesis: blue mussels, in comparison to horse mussels, have an increased ability to tolerate the stress of pollution combined with low salinity. To assess the response of blue mussels and horse mussels to oil pollution at seawater salinities of 25 psu (normal) and 15 psu (low), we used a combination of heart rate and lipid composition as physiological and biochemical indicators, respectively. A sharp decrease in heart rate as well as important fluctuations in cardiac activity was observed under all oil concentrations. Modifications in the concentrations of the main membrane lipid classes (phosphatidylcholine, phosphatidylethanolamine, and cholesterol) and storage lipids (primarily triacylglycerols) in response to different crude oil concentrations were time- and dose-dependent. Both chosen indicators showed a high sensitivity to crude oil contamination. Furthermore, both bivalve species showed similar responses to oil pollution, suggesting a universal mechanism for biochemical adaptation to crude oil pollution.

Sign in / Sign up

Export Citation Format

Share Document