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https://www.readbyqxmd.com/read/29141883/thermal-history-and-gape-of-individual-mytilus-californianus-correlate-with-oxidative-damage-and-thermoprotective-osmolytes
#1
Lani U Gleason, Luke P Miller, Jacob R Winnikoff, George N Somero, Paul H Yancey, Dylan Bratz, W Wesley Dowd
The ability of animals to cope with environmental stress depends - in part - on past experience, yet knowledge of the factors influencing an individual's physiology in nature remains underdeveloped. We used an individual monitoring system to record body temperature and valve gaping behavior of rocky intertidal zone mussels (Mytilus californianus). Thirty individuals were selected from two mussel beds (wave-exposed and wave-protected) that differ in thermal regime. Instrumented mussels were deployed at two intertidal heights (near the lower and upper edges of the mussel zone) and in a continuously submerged tidepool...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29115131/cultivation-of-the-ribbed-mussel-geukensia-demissa-for-nutrient-bioextraction-in-an-urban-estuary
#2
Eve Galimany, Gary H Wikfors, Mark S Dixon, Carter R Newell, Shannon L Meseck, Dawn Henning, Yaqin Li, Julie M Rose
Shellfish aquaculture is gaining acceptance as a tool to reduce nutrient over enrichment in coastal and estuarine ecosystems through the feeding activity of the animals and assimilation of filtered particles in shellfish tissues. This ecosystem service, provided by the ribbed mussel (Geukensia demissa), was studied in animals suspended from a commercial mussel raft in the urban Bronx River Estuary, NY, in waters closed to shellfish harvest due to bacterial contamination. Naturally occurring populations of ribbed mussels were observed to be healthy and resilient in this highly urbanized environment...
November 8, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29110894/cadmium-determination-in-chilean-blue-mussels-mytilus-chilensis-implications-for-environmental-and-agronomic-interest
#3
J Max Blanc, Carlos Molinet, Ricardo Subiabre, Patricio A Díaz
Cadmium is present in agricultural soil composition and is assimilated by plants. The mussel industry generates large volumes of calcareous valves as a byproduct of processing in factories. This solid waste is ground, stored and disposed of in the form of agricultural supplies near production areas in almost all regions of the world. Cd content was recorded in these calcareous substrate by-products of industrial processes. In this study, mussel shells were investigated in three areas in the sea of Chile; two areas with high aquaculture activity and one in a non-production area...
October 27, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29107902/ecotoxicological-risk-assessment-for-the-herbicide-glyphosate-to-non-target-aquatic-species-a-case-study-with-the-mussel-mytilus-galloprovincialis
#4
Valerio Matozzo, Jacopo Fabrello, Luciano Masiero, Federico Ferraccioli, Livio Finos, Paolo Pastore, Iole Maria Di Gangi, Sara Bogialli
Glyphosate (GLY) is one of the most used herbicide worldwide. Considering that information concerning the impact of GLY on bivalves is scarce, in this study we evaluated for the first time the effects of environmentally realistic concentrations of GLY (10, 100 and 1000 μg/L) to the mussel Mytilus galloprovincialis. Mussels were exposed for 7, 14 and 21 days and several biomarkers were measured in haemocytes/haemolymph (total haemocyte counts, haemocyte diameter and volume, haemolymph pH, haemolymph lactate dehydrogenase activity, haemocyte lysate lysozyme and acid phosphatase activities), as well as in gills and digestive gland (antioxidant enzyme and acetylcholinesterase activities)...
November 3, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29107179/uptake-and-metabolism-of-water-borne-progesterone-by-the-mussel-mytilus-spp-mollusca
#5
Tamar I Schwarz, Ioanna Katsiadaki, Benjamin H Maskrey, Alexander P Scott
Previous studies have shown that mussels can pick up 17β-estradiol [E2] and testosterone [T] from water, metabolize them and conjugate them to fatty acids (esterification), leading to their accumulation in tissue. A key requirement for the esterification process is that a steroid must have a 'reactive' hydroxyl group to conjugate to a fatty acid (which in T, and probably E2, is the β-hydroxyl group on carbon 17). Progesterone (P) lacks any hydroxyl groups and theoretically cannot be esterified and hence should not accumulate in mussels in the same way as E2 or T...
October 26, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29106937/factors-influencing-the-microplastic-contamination-of-bivalves-from-the-french-atlantic-coast-location-season-and-or-mode-of-life
#6
Nam Ngoc Phuong, Laurence Poirier, Quoc Tuan Pham, Fabienne Lagarde, Aurore Zalouk-Vergnoux
Monitoring the presence of microplastics (MP) in marine organisms is currently of high importance. This paper presents the qualitative and quantitative MP contamination of two bivalves from the French Atlantic coasts: the blue mussel (Mytilus edulis) and the Pacific oyster (Crassostrea gigas). Three factors potentially influencing the contamination were investigated by collecting at different sampling sites and different seasons, organisms both wild and cultivated. Inter- and intra-species comparisons were also achieved...
October 26, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29101884/application-of-activated-carbon-to-accelerate-detoxification-of-paralytic-shellfish-toxins-from-mussels-mytilus-galloprovincialis-and-scallops-chlamys-farreri
#7
Jiangbing Qiu, Hua Fan, Ting Liu, Xia Liang, Fanping Meng, Michael A Quilliam, Aifeng Li
Contamination of economic bivalves with paralytic shellfish toxins (PST) occurs frequently in many parts of the world, which potentially threatens consumer health and the marine aquaculture economy. It is the objective of this study to develop a suitable technology for accelerating detoxification of PST from shellfish using activated carbon (AC). The adsorption efficiency of PST by eight different AC materials and by different particle sizes of wood-based AC (WAC) were tested and compared. Then WAC particles (37-48µm) were fed to mussels Mytilus galloprovincialis and scallops Chlamys farreri previously contaminated with PST through feeding with dinoflagellate Alexandrium tamarense ATHK...
November 1, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29096972/transoceanic-dispersal-of-the-mussel-mytilus-galloprovincialis-on-japanese-tsunami-marine-debris-an-approach-for-evaluating-rafting-of-a-coastal-species-at-sea
#8
Jessica A Miller, James T Carlton, John W Chapman, Jonathan B Geller, Gregory M Ruiz
Biofouled debris from the 2011 Great East Japan earthquake and tsunami has landed in the Northeast Pacific and along the Hawaiian Islands since 2012. As of 2017, >630 biofouled debris items with >320 living species of algae, invertebrates, and fish have been examined. The invasive mussel Mytilus galloprovincialis was present on >50% of those items. Size, reproduction, and growth of this filter-feeding species were examined to better understand long-distance rafting of a coastal species. The majority of mussels (79%) had developing or mature gametes, and growth rates averaged 0...
October 30, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29056761/disruption-of-doubly-uniparental-inheritance-of-mitochondrial-dna-associated-with-hybridization-area-of-european-mytilus-edulis-and-mytilus-trossulus-in-norway
#9
Beata Śmietanka, Artur Burzyński
Doubly uniparental inheritance of mitochondria (DUI) is best known in the blue mussel Mytilus. Under this model, two types of mitochondrial DNA exist: female type (F), transmitted from females to offspring of both genders, and male type (M), transmitted exclusively from males to sons. The mitogenomes are usually highly divergent, but an occasional replacement of a typical M genome by a particular F genome has been postulated to explain reduction of this divergence. Disruption of the DUI model has been reported in hybridization areas...
2017: Marine Biology
https://www.readbyqxmd.com/read/29046378/fluctuating-seawater-ph-pco2-regimes-are-more-energetically-expensive-than-static-ph-pco2-levels-in-the-mussel-mytilus-edulis
#10
Stephanie Mangan, Mauricio A Urbina, Helen S Findlay, Rod W Wilson, Ceri Lewis
Ocean acidification (OA) studies typically use stable open-ocean pH or CO2 values. However, species living within dynamic coastal environments can naturally experience wide fluctuations in abiotic factors, suggesting their responses to stable pH conditions may not be reflective of either present or near-future conditions. Here we investigate the physiological responses of the mussel Mytilus edulis to variable seawater pH conditions over short- (6 h) and medium-term (2 weeks) exposures under both current and near-future OA scenarios...
October 25, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29045922/the-impact-of-expired-commercial-drugs-on-non-target-marine-species-a-case-study-with-the-use-of-a-battery-of-biomarkers-in-hemocytes-of-mussels
#11
Nektarios Politakis, Alexia Belavgeni, Ioanna Efthimiou, Nikolina Charalampous, Chara Kourkouta, Stefanos Dailianis
The present study investigated the effects of two expired commercial medicines, like Buscopan Plus and Mesulid, commonly classified as household medical wastes, on hemocytes of mussel Mytilus galloprovincialis. Mussel hemocytes' lysosomal membrane stability (in terms of neutral red retention assay), superoxide anions (O2(·)(-)) and nitric oxides (NO, in terms of nitrites) production, lipid peroxidation (in terms of malondialdehyde/MDA content) and the formation of nuclear abnormalities (using the micronucleus/MN assay) were assessed in hemocytes of mussels treated for 7 days with appropriate amounts of each drug (the concentrations of active substances were considered in each case, due to the absence of data related with the excipients) as well as in hemocytes of post-treated/recovered mussels (7 days post-treatment/recovery period)...
October 14, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29040019/seasonal-expression-patterns-of-clock-associated-genes-in-the-blue-mussel-mytilus-edulis
#12
Emma C Chapman, Alasdair R O'Dell, Noha M Meligi, Daniel R Parsons, Jeanette M Rotchell
Environmental cues allow organisms to synchronise their internal biological rhythms with external environmental cycles. These rhythms are regulated on a molecular level by oscillating interactions between clock genes and their proteins. Light is a particularly relevant environmental cue, provisioning daily information via light/dark cycles as well as seasonal information via day-length (photoperiod). Despite the ecological and commercial importance of bivalves, little is known about the interactions comprising their molecular clock mechanism...
October 17, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29039708/detection-of-total-and-pathogenic-vibrio-parahaemolyticus-in-shellfish-growing-along-the-south-yellow-sea-and-the-east-china-sea
#13
Feng Han, Run-Run Gu, Xiao-Sheng Shen, Yuan-Ge Chen, Liang-Liang Tian, Wei-Feng Zhou, You-Qiong Cai
This study was conducted to monitor the densities of total and pathogenic Vibrio parahaemolyticus in 300 samples of nine shellfish species harvested from the coasts of the South Yellow Sea and the East China Sea (N 23° to 34°, E 116° to 124°), People's Republic of China, between May and October 2015. Total V. parahaemolyticus densities were measured, and V. parahaemolyticus isolates were biochemically identified with probes for the thermostable direct hemolysin gene (tdh) and the thermostable direct hemolysin-related hemolysin gene (trh)...
October 17, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/29037671/blue-mussel-mytilus-edulis-protein-hydrolysate-promotes-mouse-mesenchymal-stem-cell-differentiation-into-osteoblasts-through-up-regulation-of-bone-morphogenetic-protein
#14
Jun-Ho Hyung, Chang-Bum Ahn, Jae-Young Je
Seafood provides a range of health benefits due to its high-protein level. In this study, the osteogenic effect of blue mussel (Mytilus edulis) protein hydrolysates (BMPH) on osteoblast differentiation were examined using mouse mesenchymal stem cells (MSCs). A preparation we called BMPH<1kDa which showed the highest osteogenic effect in MSCs, was prepared by peptic hydrolysis. BMPH<1kDa treatment stimulated osteoblast differentiation with alkaline phosphatase (ALP) induction, osteocalcin and type I collagen activity as well as calcium deposition...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29031804/transcriptional-response-after-exposure-to-domoic-acid-producing-pseudo-nitzschia-in-the-digestive-gland-of-the-mussel-mytilus-galloprovincialis
#15
Antonio J Pazos, Pablo Ventoso, Roi Martínez-Escauriaza, M Luz Pérez-Parallé, Juan Blanco, Juan C Triviño, José L Sánchez
Bivalve molluscs are filter feeding species that can accumulate biotoxins in their body tissues during harmful algal blooms. Amnesic Shellfish Poisoning (ASP) is caused by species of the diatom genus Pseudo-nitzschia, which produces the toxin domoic acid. The Mytilus galloprovincialis digestive gland transcriptome was de novo assembled based on the sequencing of 12 cDNA libraries, six obtained from control mussels and six from mussels naturally exposed to domoic acid-producing diatom Pseudo-nitzschia australis...
October 12, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29030874/depuration-of-cadmium-from-blue-mussel-mytilus-edulis-by-protein-hydrolysate-fe-2-complex-the-role-of-metallothionein
#16
Bin Zhang, Chuan-Dong Fang, Jun-Hui Xu, Hui-Juan Cao
Metallothionein (MT) plays a major role in the detoxification of toxic metal ions in mussel. This study served to investigate the effects of prepared protein hydrolysate-Fe(2+) (PH-Fe(2+) ) on depuration of cadmium salt (Cd(2+) ) from blue mussel (Mytilus edulis). The results indicated that Cd(2+) concentrations in control ranged from 46.1 to 47.1 μg/g during 15 d of depuration. While, 40 mg/L PH-Fe(2+) feed mussels exhibited obvious changes in Cd(2+) concentration variables, which decreased by 22.8 μg/g after 15 d of depuration, making them significantly lower than the values of the control...
October 14, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29029381/biochemical-responses-and-accumulation-patterns-of-mytilus-galloprovincialis-exposed-to-thermal-stress-and-arsenic-contamination
#17
Francesca Coppola, Ângela Almeida, Bruno Henriques, Amadeu M V M Soares, Etelvina Figueira, Eduarda Pereira, Rosa Freitas
Organisms in marine systems are exposed to multiple stressors that create a range of associated environmental and ecotoxicological risks. Examples of stressors include alterations related to climate change, such as temperature increase, and the exposure to pollutants arising from human activities. The present study evaluated the impacts of Arsenic exposure (1mg/L) and warming (21°C) in Mytilus galloprovincialis, acting alone and in combination. Our results demonstrated that both Arsenic exposure and warming induced oxidative stress and reduced mussels metabolism, with changes becoming more prominent with the exposure time and when mussels were exposed to both stressors in combination...
January 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29025872/sirtuins-regulate-proteomic-responses-near-thermal-tolerance-limits-in-the-blue-mussels-mytilus-galloprovincialis-and-mytilus-trossulus
#18
M Christina Vasquez, Michelle Beam, Shelley Blackwell, Marcus J Zuzow, Lars Tomanek
The blue mussels Mytilus galloprovincialis and M. trossulus are competing species with biogeographical ranges set in part by environmental exposure to heat and hyposalinity. The underlying cellular mechanisms influencing interspecific differences in stress tolerance are unknown, but are believed to be under regulation by sirtuins, NAD-dependent deacylases that play a critical role in the cellular stress response. A comparison of the proteomic responses of M. galloprovincialis and M. trossulus to an acute heat shock in the presence and absence of the sirtuin inhibitor suramin (SIRT1, 2 and 5), showed that sirtuins affected molecular chaperones, oxidative stress proteins, metabolic enzymes, cytoskeletal and signaling proteins more in the heat-sensitive M...
October 12, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28992479/bioaccumulation-of-uv-filters-in-mytilus-galloprovincialis-mussel
#19
Leticia Vidal-Liñán, Eugenia Villaverde-de-Sáa, Rosario Rodil, José Benito Quintana, Ricardo Beiras
In this study the bioaccumulation kinetics of organic UV filters, such as 4-MBC, BP-3, BP-4, OC and OD-PABA in wild Mytilus galloprovincialis mussels was investigated. The uptake and accumulation of waterborne 4-MBC, BP-4 and OC was very rapid, and after only 24 h of exposure to 1 μg L(-1), the tissular concentrations were 418, 263 and 327 μg kg(-1)d.w., respectively. The kinetics of bioaccumulation of BP-4 and OC significantly fitted to an asymptotic model with BCF values of 905 L kg(-1) and 2210 L kg(-1), respectively...
September 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/28985307/sequence-based-analysis-of-thermal-adaptation-and-protein-energy-landscapes-in-an-invasive-blue-mussel-mytilus-galloprovincialis
#20
Norah P Saarman, Kord M Kober, W Brian Simison, Grant H Pogson
Adaptive responses to thermal stress in poikilotherms plays an important role in determining competitive ability and species distributions. Amino acid substitutions that affect protein stability and modify the thermal optima of orthologous proteins may be particularly important in this context. Here, we examine a set of 2,770 protein-coding genes to determine if proteins in a highly invasive heat tolerant blue mussel (Mytilus galloprovincialis) contain signals of adaptive increases in protein stability relative to orthologs in a more cold tolerant M...
October 1, 2017: Genome Biology and Evolution
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