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https://www.readbyqxmd.com/read/28934713/imposex-levels-and-butyltin-compounds-bts-in-hexaplex-trunculus-linnaeus-1758-from-the-northern-adriatic-sea-italy-ecological-risk-assessment-before-and-after-the-ban
#1
Federica Cacciatore, Rossella Boscolo Brusà, Seta Noventa, Camilla Antonini, Vanessa Moschino, Malgorzata Formalewicz, Claudia Gion, Daniela Berto, Massimo Gabellini, Maria Gabriella Marin
The aim of this study was to compare imposex and butyltin compounds (BTs) data, collected before and after the organotin ban in 2008, in order to assess temporal and spatial variation of the phenomenon, the decline of BT contamination, and the effects on Hexaplex trunculus population in the coastal area of the northern Adriatic Sea, close to the Venice Lagoon. Both in marine and in lagoon sites, the results obtained in 2013-2015 showed a significant decline in the incidence of imposex in respect to those from the 2002 survey...
September 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28934686/changes-in-microbial-community-during-removal-of-bde-153-in-four-types-of-aquatic-sediments
#2
Ying Pan, Juan Chen, Haichao Zhou, Nora F Y Tam
Indigenous microorganisms in sediments could degrade polybrominated diphenyl ethers (PBDEs), but how the microbial communities respond to PBDEs was seldom reported. The effect of BDE-153, a common congener in aquatic environments, on the microbial communities in four types of aquatic sediments was evaluated during the 150days' incubation under an anaerobic condition. The intrinsic potential to remove BDE-153 varied significantly among four sediment types, and the removal rates of mangrove, mudflat, marine and freshwater sediments were 0...
September 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28934682/the-fate-of-human-remains-in-a-maritime-context-and-feasibility-for-forensic-humanitarian-action-to-assist-in-their-recovery-and-identification
#3
Sarah Theresa Dorothea Ellingham, Pierre Perich, Morris Tidball-Binz
The number of annual maritime fatalities reported in the Mediterranean has more than doubled in the last two years, a phenomenon closely linked to the increase of migrants attempting to reach Europe via the Mediterranean. The majority of victims reportedly never gets recovered, which in part relates to the fact that the mechanisms and interaction of factors affecting marine taphonomy are still largely not understood. These factors include intrinsic factors such as whether the individual was alive or dead at the time of submergence, the individual's stature and clothing, as well as extrinsic factors such including ambient temperature, currents, water depth, salinity and oxygen levels...
August 7, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28934657/characterisation-of-artisanal-mine-waste-on-buru-island-indonesia-and-toxicity-to-the-brittle-star-amphipholis-squamata
#4
Amanda J Reichelt-Brushett, Bernard Thomas, Pelli L Howe, Yusthinus Male, Malcolm W Clark
Artisanal small-scale gold mining (ASGM) using mercury (Hg) amalgamation commenced on Buru Island, Indonesia, in 2012, but was halted in 2015 due to concerns of widespread Hg contamination. Much of the Hg used in the mining process is lost to trommel waste which is disposed of in settlement ponds that drain into adjacent waterways and into Kayeli Bay. Several thousand unmanaged trommel sites and associated tailing ponds exist on Buru Island. This study shows that waste from the Marloso trommel at the Gogrea site contained 203 mg/kg total Hg (THg), with a negligible proportion present as bioavailable methyl Hg (MeHg) and a low total organic carbon content...
September 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28934650/influence-of-human-activities-and-organic-matters-on-occurrence-of-polybrominated-diphenyl-ethers-in-marine-sediment-core-a-case-study-in-the-southern-yellow-sea-china
#5
Guoguang Wang, Lijuan Feng, Jingshuai Qi, Xianguo Li
The Southern Yellow Sea (SYS) is an important reservoir of anthropogenic organic contaminants, such as polybrominated diphenyl ethers (PBDEs). To reconstruct the historical records of PBDEs and examine their relationships with the human activities and organic matters, a(210)Pb-dated sediment core was collected from the central mud area in the SYS. The concentrations of tri-to hepta-BDEs (∑7PBDEs) and BDE-209 ranged from 9.8 to 99.8 pg g(-1) d.w. and from 12.1 to 855.4 pg g(-1) d.w., respectively, both displaying the increasing trends from the bottom to the surface...
September 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28934598/mixing-efficiency-in-the-ocean
#6
M C Gregg, E A D'Asaro, J J Riley, E Kunze
Mixing efficiency is the ratio of the net change in potential energy to the energy expended in producing the mixing. Parameterizations of efficiency and of related mixing coefficients are needed to estimate diapycnal diffusivity from measurements of the turbulent dissipation rate. Comparing diffusivities from microstructure profilingwith those inferred from the thickening rate of four simultaneous tracer releases has verified, within observational accuracy, 0.2 as the mixing coefficient over a 30-fold range of diapycnal diffusivities...
September 13, 2017: Annual Review of Marine Science
https://www.readbyqxmd.com/read/28934597/the-recent-atlantic-cold-anomaly-causes-consequences-and-related-phenomena
#7
Simon A Josey, Joel J-M Hirschi, Bablu Sinha, Aurélie Duchez, Jeremy P Grist, Robert Marsh
Cold ocean temperature anomalies have been observed in the mid- to high-latitude North Atlantic on interannual to centennial timescales. Most notably, a large region of persistently low surface temperatures accompanied by a sharp reduction in ocean heat content was evident in the subpolar gyre from the winter of 2013-2014 to 2016, and the presence of this feature at a time of pervasive warming elsewhere has stimulated considerable debate. Here, we review the role of air-sea interaction and ocean processes in generating this cold anomaly and place it in a longer-term context...
September 15, 2017: Annual Review of Marine Science
https://www.readbyqxmd.com/read/28934490/number-of-inadvertent-rna-targets-for-morpholino-knockdown-in-danio-rerio-is-largely-underestimated-evidence-from-the-study-of-ser-arg-rich-splicing-factors
#8
Marine Joris, Marie Schloesser, Denis Baurain, Marc Hanikenne, Marc Muller, Patrick Motte
Although the involvement of Ser/Arg-rich (SR) proteins in RNA metabolism is well documented, their role in vertebrate development remains elusive. We, therefore, elected to take advantage of the zebrafish model organism to study the SR genes' functions using the splicing morpholino (sMO) microinjection and the programmable site-specific nucleases. Consistent with previous research, we revealed discrepancies between the mutant and morphant phenotypes and we show that these inconsistencies may result from a large number of unsuspected inadvertent morpholino RNA targets...
September 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28934399/methane-metabolizing-microbial-communities-in-sediments-of-the-haima-cold-seep-area-northwest-slope-of-the-south-china-sea
#9
Mingyang Niu, Xibei Fan, Guangchao Zhuang, Qianyong Liang, Fengping Wang
Cold seeps are widespread chemosynthetic ecosystems in the deep-sea environment, and cold seep microbial communities of the South China Sea are poorly constrained. Here we report on the archaeal communities, particularly those involved in methane metabolization, in sediments of a newly discovered cold seep (named 'Haima') on the northwest slope of the South China Sea. Archaeal diversity, abundance and distribution were investigated in two piston cores collected from a seep area (QDN-14B) and a non-seep control site (QDN-31B)...
September 1, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28934335/genetic-diversity-of-entamoeba-novel-ribosomal-lineages-from-cockroaches
#10
Tetsuro Kawano, Mihoko Imada, Pennapa Chamavit, Seiki Kobayashi, Tetsuo Hashimoto, Tomoyoshi Nozaki
Our current taxonomic perspective on Entamoeba is largely based on small-subunit ribosomal RNA genes (SSU rDNA) from Entamoeba species identified in vertebrate hosts with minor exceptions such as E. moshkovskii from sewage water and E. marina from marine sediment. Other Entamoeba species have also been morphologically identified and described from non-vertebrate species such as insects; however, their genetic diversity remains unknown. In order to further disclose the diversity of the genus, we investigated Entamoeba spp...
2017: PloS One
https://www.readbyqxmd.com/read/28934331/direct-identification-of-microorganisms-from-thioglycolate-broth-by-maldi-tof-ms
#11
Jorge Arca-Suárez, Fátima Galán-Sánchez, Pilar Marin-Casanova, Manuel A Rodríguez-Iglesias
We developed an easy MALDI-TOF MS-based assay to identify microorganisms directly from thioglycolate broth. A total of 101 positive thioglycolate broths inoculated with 15 different kinds of samples were evaluated. In 91 samples (90.1%), direct MALDI-TOF MS identifications were the same as those obtained after conventional laboratory procedures including subcultures. In 10 samples misidentified by direct processing, yeasts or mixed cultures grew in the thioglycolate subcultures, or high cellular debris hampered a correct analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28934288/purification-of-rabbit-serum-histidine-proline-rich-glycoprotein-via-preparative-gel-electrophoresis-and-characterization-of-its-glycosylation-patterns
#12
Anna Katharina Weyrauch, Mario Jakob, Angelika Schierhorn, Ralf Bernd Klösgen, Dariush Hinderberger
Histidine-Proline-rich Glycoprotein (HPRG) is a plasma protein of vertebrates and several marine bivalves. Due to its multidomain structure consisting of several regions HPRG can interact with a variety of ligands, however the exact physiological role has not been discovered yet. Past purification approaches out of plasma or serum often led to co-purification of other proteins so that for a profound understanding of the function it is important to obtain a protein of high purity. Recent purification strategies were based upon metale chelate affinity chromatography followed by anion exchange chromatography or size exclusion chromatography, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28934286/denitrification-potential-of-the-eastern-oyster-microbiome-using-a-16s-rrna-gene-based-metabolic-inference-approach
#13
Ann Arfken, Bongkeun Song, Jeff S Bowman, Michael Piehler
The eastern oyster (Crassostrea virginica) is a foundation species providing significant ecosystem services. However, the roles of oyster microbiomes have not been integrated into any of the services, particularly nitrogen removal through denitrification. We investigated the composition and denitrification potential of oyster microbiomes with an approach that combined 16S rRNA gene analysis, metabolic inference, qPCR of the nitrous oxide reductase gene (nosZ), and N2 flux measurements. Microbiomes of the oyster digestive gland, the oyster shell, and sediments adjacent to the oyster reef were examined based on next generation sequencing (NGS) of 16S rRNA gene amplicons...
2017: PloS One
https://www.readbyqxmd.com/read/28934239/characterisation-of-north-american-brucella-isolates-from-marine-mammals
#14
Adrian M Whatmore, Claire Dawson, Jakub Muchowski, Lorraine L Perrett, Emma Stubberfield, Mark Koylass, Geoffrey Foster, Nicholas J Davison, Christine Quance, Inga F Sidor, Cara L Field, Judy St Leger
Extension of known ecological niches of Brucella has included the description of two novel species from marine mammals. Brucella pinnipedialis is associated predominantly with seals, while two major Brucella ceti clades, most commonly associated with porpoises or dolphins respectively, have been identified. To date there has been limited characterisation of Brucella isolates obtained from marine mammals outside Northern European waters, including North American waters. To address this gap, and extend knowledge of the global population structure and host associations of these Brucella species, 61 isolates from marine mammals inhabiting North American waters were subject to molecular and phenotypic characterisation enabling comparison with existing European isolates...
2017: PloS One
https://www.readbyqxmd.com/read/28934126/a-multi-objective-partition-method-for-marine-sensor-networks-based-on-degree-of-event-correlation
#15
Dongmei Huang, Chenyixuan Xu, Danfeng Zhao, Wei Song, Qi He
Existing marine sensor networks acquire data from sea areas that are geographically divided, and store the data independently in their affiliated sea area data centers. In the case of marine events across multiple sea areas, the current network structure needs to retrieve data from multiple data centers, and thus severely affects real-time decision making. In this study, in order to provide a fast data retrieval service for a marine sensor network, we use all the marine sensors as the vertices, establish the edge based on marine events, and abstract the marine sensor network as a graph...
September 21, 2017: Sensors
https://www.readbyqxmd.com/read/28933768/chronic-respiratory-diseases-in-the-regions-of-northern-russia-epidemiological-distinctions-in-the-results-of-a-national-population-study
#16
Marine H Gambaryan, Svetlana A Shalnova, Alexander D Deev, Oxana M Drapkina
The aim of the study is to investigate the epidemiological situation regarding chronic respiratory diseases in populations that inhabit different climatic-geographical regions of Russia, and to develop targeted programs for prevention of these diseases. METHODS: (1) a comparative analysis of the standardized mortality data in Russia and other selected regions of the Russian North using the European standard for respiratory diseases, in a population aged 25-64; and (2) data from a randomized cross-sectional epidemiological study, with subjects from three different climatic-geographical regions of Russia...
July 26, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28933758/the-effect-of-season-on-the-metabolic-profile-of-the-european-clam-ruditapes-decussatus-as-studied-by-%C3%A2-h-nmr-spectroscopy
#17
Violetta Aru, Søren Balling Engelsen, Francesco Savorani, Jacopo Culurgioni, Giorgia Sarais, Giulia Atzori, Serenella Cabiddu, Flaminia Cesare Marincola
In this study, the metabolome of Ruditapes decussatus, an economically and ecologically important marine bivalve species widely distributed in the Mediterranean region, was characterized by using proton Nuclear Magnetic Resonance (¹H-NMR) spectroscopy. Significant seasonal variations in the content of carbohydrates and free amino acids were observed. The relative amounts of alanine and glycine were found to exhibit the same seasonal pattern as the temperature and salinity at the harvesting site. Several putative sex-specific biomarkers were also discovered...
July 26, 2017: Metabolites
https://www.readbyqxmd.com/read/28933728/the-effect-of-astaxanthin-rich-microalgae-haematococcus-pluvialis-and-wholemeal-flours-incorporation-in-improving-the-physical-and-functional-properties-of-cookies
#18
A K M Mofasser Hossain, Margaret A Brennan, Susan L Mason, Xinbo Guo, Xin An Zeng, Charles S Brennan
Marine-based food supplements can improve human nutrition. In an effort to modulate glycaemic response and enhance nutritional aspects, marine-derived algal food rich in astaxanthin was used in the formulation of a model food (wholemeal cookie). Astaxanthin substitution of cookies made from three flours (wheat, barley and oat) demonstrated a significant reduction in the rate of glucose released during in vitro digestion together with an increase in the total phenolic content (TPC) and antioxidant capacity of the food...
July 26, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28933449/marine-scientists-allege-japan-has-blocked-researchers-from-joining-south-korean-ship
#19
Mark Zastrow
No abstract text is available yet for this article.
September 19, 2017: Nature
https://www.readbyqxmd.com/read/28932392/galectin-3-a-marker-of-cardiac-remodeling-is-inversely-related-to-serum-levels-of-marine-omega-3-fatty-acids-a-cross-sectional-study
#20
K Laake, I Seljeflot, E B Schmidt, P Myhre, A Tveit, J Norseth, H Arnesen, S Solheim
OBJECTIVE: Marine polyunsaturated n-3 fatty acids (n-3 PUFA) may have cardioprotective effects and beneficial influence on the fibrotic process. We evaluated the associations between serum marine n-3 PUFA and selected biomarkers of fibrosis and cardiac remodeling in elderly patients with acute myocardial infarction. SETTING: From the ongoing OMega-3 fatty acids in Elderly patients with Myocardial Infarction (OMEMI) trial, 299 patients were investigated. Soluble ST2 (sST2), Galectin-3 (Gal-3) and the serum content of major marine n-3 and n-6 PUFA were analyzed 2-8 weeks after the index acute myocardial infarction...
January 2017: JRSM Cardiovascular Disease
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