Salinity tolerance and absorption of L-Methionine by some Australian bivalve molluscs

1986 ◽  
Vol 37 (6) ◽  
pp. 721 ◽  
Author(s):  
JA Nell ◽  
PJ Gibbs
Keyword(s):  
Amino Acid ◽  
Mytilus Edulis ◽  
Salinity Tolerance ◽  
Blue Mussel ◽  
Tolerance Range ◽  
Bivalve Molluscs ◽  
Flat Oyster

The salinity tolerance range of the scallop Pecten fumatus Reeve was 25-40 g 1-1, of the pipi (clam) Plebidonax deltoides (Lamarck) and the flat oyster Ostrea angasi Sowerby, 20-45 g I-1, and of the blue mussel Mytilus edulis planulatus Lamarck and the Sydney cockle Anadara trapezia (Deshayes), 15-45 g I-1. All of these bivalves absorbed substantial amounts of the amino acid L-methionine directly from seawater.

scholarly journals Modeling the Metabolic Profile of Mytilus Edulis Reveals Molecular Signatures Linked to Gonadal Development, Sex and Environmental Site

2021 ◽  
Author(s):  
Jaanika Kronberg ◽  
Jonathan Byrne ◽  
Jeroen Jansen ◽  
Philipp Antczak ◽  
Adam Hines ◽  
...  
Keyword(s):  
Mytilus Edulis ◽  
Blue Mussel ◽  
Biological Effects ◽  
Environmental Parameters ◽  
Aquatic Organisms ◽  
Gonadal Development ◽  
Bivalve Molluscs ◽  
Physiological Indicators ◽  
Work Supports ◽  
The Relationship

Abstract The monitoring of anthropogenic chemicals in the aquatic environment including their potential effects on aquatic organisms, is important for protecting life under water, a key sustainable development goal. In parallel with monitoring the concentrations of chemicals of concern, sentinel species are often used to investigate the biological effects of contaminants. Among these, bivalve molluscs such as mussels are filter-feeding and sessile, hence an excellent model system for measuring localized pollution.This study investigates the relationship between the metabolic state of the blue mussel (Mytilus edulis) and its physiology in different environments. We developed a computational model based on a reference site (relatively unpolluted) and integrated seasonal dynamics of metabolite relative concentrations with key physiological indicators and environmental parameters. The analysis of the model revealed that changes in metabolite levels during an annual cycle are influenced by water temperature and are linked to gonadal development. This work supports the importance of data-driven biology and its potential in environmental monitoring.

scholarly journals Characterization of a glutathione S-transferase and a related glutathione-binding protein from gill of the blue mussel, Mytilus edulis

1995 ◽  
Vol 305 (1) ◽  
pp. 145-150 ◽  
Author(s):  
P J Fitzpatrick ◽  
T O B Krag ◽  
P Højrup ◽  
D Sheehan
Keyword(s):  
Amino Acid ◽  
Mytilus Edulis ◽  
Blue Mussel ◽  
Binding Protein ◽  
Protein A ◽  
Gel Filtration ◽  
Cumene Hydroperoxide ◽  
Gill Tissue ◽  
Glutathione S Transferase ◽  
Sequencing Studies

The major isoenzyme of glutathione S-transferase (GST 1) was purified to homogeneity from cytosolic extracts of Mytilus edulis gill tissue by GSH-agarose affinity chromatography followed by Mono Q ion-exchange f.p.l.c. This enzyme was particularly active with 1-chloro-2,4-dinitrobenzene, ethacrynic acid and cumene hydroperoxide as substrates. Immunoblotting and amino acid sequencing studies indicate that the enzyme belongs to the Pi class of GSTs. A related protein which binds to GSH-agarose was also purified. This GSH-binding protein did not immunoblot with GST antisera and showed no detectable catalytic activity with GST substrates although its N-terminal sequence was similar to Mu-class GSTs. Gel-filtration chromatography indicated that GST 1 is a dimer and the GSH-binding protein a monomer. Mass spectrometry and SDS/PAGE indicate subunit molecular masses of 24 kDa (GST 1) and 25 kDa (GSH-binding protein), respectively. Both proteins have amino acid compositions typical of GSTs.

scholarly journals Modeling the metabolic profile of Mytilus edulis reveals molecular signatures linked to gonadal development, sex and environmental site

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jaanika Kronberg ◽  
Jonathan J. Byrne ◽  
Jeroen Jansen ◽  
Philipp Antczak ◽  
Adam Hines ◽  
...  
Keyword(s):  
Mytilus Edulis ◽  
Blue Mussel ◽  
Biological Effects ◽  
Environmental Parameters ◽  
Aquatic Organisms ◽  
Gonadal Development ◽  
Bivalve Molluscs ◽  
Physiological Indicators ◽  
Work Supports ◽  
The Relationship

AbstractThe monitoring of anthropogenic chemicals in the aquatic environment including their potential effects on aquatic organisms, is important for protecting life under water, a key sustainable development goal. In parallel with monitoring the concentrations of chemicals of concern, sentinel species are often used to investigate the biological effects of contaminants. Among these, bivalve molluscs such as mussels are filter-feeding and sessile, hence an excellent model system for measuring localized pollution. This study investigates the relationship between the metabolic state of the blue mussel (Mytilus edulis) and its physiology in different environments. We developed a computational model based on a reference site (relatively unpolluted) and integrated seasonal dynamics of metabolite relative concentrations with key physiological indicators and environmental parameters. The analysis of the model revealed that changes in metabolite levels during an annual cycle are influenced by water temperature and are linked to gonadal development. This work supports the importance of data-driven biology and its potential in environmental monitoring.

scholarly journals Differential Segregation Patterns of Sperm Mitochondria in Embryos of the Blue Mussel (Mytilus edulis)

Genetics ◽  
2004 ◽  
Vol 166 (2) ◽  
pp. 883-894
Author(s):  
Liqin Cao ◽  
Ellen Kenchington ◽  
Eleftherios Zouros
Keyword(s):  
Mitochondrial Dna ◽  
Mytilus Edulis ◽  
Blue Mussel ◽  
Uniparental Inheritance ◽  
Male Gonad ◽  
Doubly Uniparental Inheritance ◽  
Organelle Genomes ◽  
Somatic Tissues ◽  
Tight Linkage ◽  
Mitotracker Green

Abstract In Mytilus, females carry predominantly maternal mitochondrial DNA (mtDNA) but males carry maternal mtDNA in their somatic tissues and paternal mtDNA in their gonads. This phenomenon, known as doubly uniparental inheritance (DUI) of mtDNA, presents a major departure from the uniparental transmission of organelle genomes. Eggs of Mytilus edulis from females that produce exclusively daughters and from females that produce mostly sons were fertilized with sperm stained with MitoTracker Green FM, allowing observation of sperm mitochondria in the embryo by epifluorescent and confocal microscopy. In embryos from females that produce only daughters, sperm mitochondria are randomly dispersed among blastomeres. In embryos from females that produce mostly sons, sperm mitochondria tend to aggregate and end up in one blastomere in the two- and four-cell stages. We postulate that the aggregate eventually ends up in the first germ cells, thus accounting for the presence of paternal mtDNA in the male gonad. This is the first evidence for different behaviors of sperm mitochondria in developing embryos that may explain the tight linkage between gender and inheritance of paternal mitochondrial DNA in species with DUI.

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