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https://www.readbyqxmd.com/read/27898247/challenges-for-the-maintenance-and-cryopreservation-of-multiple-isolates-of-model-microorganisms-an-example-using-the-marine-diatom-skeletonema-marinoi
#1
John G Day, Simon Tytor, Jenny Egardt, Monica Applegren, Cecilia Rad-Menéndez, Olga Chepurnova, Wim Vyverman, Anna Godhe
Modern genomic and metabolomic tools have provided the possibility of generating and interrogating large datasets that can provide answers to previously imponderable taxonomic, evolutionary, ecological, and physiological questions. However, the curatorial tools needed to provide and maintain the relevant biological resources on which new knowledge can be built have not kept pace with this meteoric rise in scientific capacity, its associated activity, or the huge increase in published science. The availability of biological material of guaranteed identity and quality in Biological Resource Centers is fundamental for scientific research, but it crucially depends on there being adequate preservation/maintenance methods that are capable of ensuring phenotypic, genotypic, and functional security of the biological material(s)...
November 29, 2016: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/27876949/new-occurrence-of-parasitic-isopod-argathona-sp-stebbing-1905-from-epinephelus-undulosus-in-the-tuticorin-coast-gulf-of-mannar-region
#2
Gurusamy Chelladurai, Srinivasan Balakrishanan, Ganapathy Rameshkumar, Kannan Banumathi
In the present study of Epinephelus undulosus captured in gillnets from the inshore waters of Tuticorin, Gulf of Mannar region during December 2014. The present findings represent the first occurrence of Argathona sp. and here in reported. The materials examined were deposited at the Kamaraj College, Marine Biological Research Laboratory, Tuticorin, India. The parasitological indexes were calculated. The site of attachment of the parasites on their hosts was also observed. Host-parasite relationships are considered and these parasites can cause the damage in gill, eye and internal organ including swim bladder...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27866626/seaweeds-a-resource-for-marine-bionanotechnology
#3
Sri Ramkumar Vijayan, Prakash Santhiyagu, Ramasubburayan Ramasamy, Pugazhendhi Arivalagan, Gopalakrishnan Kumar, Kannapiran Ethiraj, Babu Rajendran Ramaswamy
Marine bionanotechnology is one of the most promising areas of research in modern science and technology. Although there are multitude methods for the synthesis of nanoparticles (NPs), there is an increasing attention in developing high-yield, low-cost, non-toxic and eco-friendly procedures. The vital advantages of greener synthesis are cost-effective, reduced usage of toxic chemicals and abundant availability of resources. During the last ten years, there have been many biological entities used to elevate novel, greener and affordable methods for the metal NPs synthesis...
December 2016: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/27848719/results-from-spain-s-2016-report-card-on-physical-activity-for-children-and-youth
#4
Blanca Roman-Viñas, Jorge Marin, Mairena Sánchez-López, Susana Aznar, Rosaura Leis, Raquel Aparicio-Ugarriza, Helmut Schroder, Rocío Ortiz-Moncada, German Vicente, Marcela González-Gross, Lluís Serra-Majem
BACKGROUND: The first Active Healthy Kids Spanish Report Card aims to gather the most robust information about physical activity (PA) and sedentary behavior of children and adolescents. METHODS: A Research Working Group of experts on PA and sport sciences was convened. A comprehensive data search, based on a review of the literature, dissertations, gray literature, and experts' nonpublished data, was conducted to identify the best sources to grade each indicator following the procedures and methodology outlined by the Active Healthy Kids Canada Report Card model...
November 2016: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/27844012/description-of-a-myxozoan-parasite-myxobolus-sp-n-pkb2014-from-an-edible-fish-with-emphasis-on-its-molecular-characterization
#5
Somerita Panda, Subarna Ghosh, Probir Kumar Bandyopadhyay
In India, more than 104 species of Myxobolus have so far been reported infecting freshwater as well as marine fishes. The study focuses on the description of a new myxosporean species, Myxobolus sp.n PKB 2014 from the gill lamellae of an Indian major carp Labeo rohita. The species have been described on the basis of morphological characterization of the spores, tissue architecture and 18S rDNA sequence data. The plasmodia of Myxobolus sp.n PKB 2014 were round in shape measuring, 50 to 70 μm in diameter and spores were ellipsoidal in frontal view measures 14...
December 2015: Molecular Biology Research Communications
https://www.readbyqxmd.com/read/27843109/non-cholera-vibrios-the-microbial-barometer-of-climate-change
#6
REVIEW
Craig Baker-Austin, Joaquin Trinanes, Narjol Gonzalez-Escalona, Jaime Martinez-Urtaza
There is a growing interest in the role of climate change in driving the spread of waterborne infectious diseases, such as those caused by bacterial pathogens. One particular group of pathogenic bacteria - vibrios - are a globally important cause of diseases in humans and aquatic animals. These Gram-negative bacteria, including the species Vibrio vulnificus, Vibrio parahaemolyticus and Vibrio cholerae, grow in warm, low-salinity waters, and their abundance in the natural environment mirrors ambient environmental temperatures...
November 11, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27842964/hygroscopic-behavior-of-water-soluble-matter-in-marine-aerosols-over-the-east-china-sea
#7
Yu Yan, Pingqing Fu, Bo Jing, Chao Peng, S K R Boreddy, Fan Yang, Lianfang Wei, Yele Sun, Zifa Wang, Maofa Ge
In this study, we investigated hygroscopic properties of water-soluble matter (WSM) in marine aerosols over the East China Sea, which were collected during a Natural Science Foundation of China (NSFC) sharing cruise in 2014. Hygroscopic growth factors (g) of WSM were measured by a hygroscopicity tandem differential mobility analyzer (H-TDMA) with an initial dry particle mobility diameter of 100nm. The observed g at 90% relative humidity (RH), g(90%)WSM, defined as the ratio of the particle diameter at 90% RH to that at RH<5% (initial dry diameter), ranged from 1...
November 11, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27814034/dining-in-the-deep-the-feeding-ecology-of-deep-sea-fishes
#8
Jeffrey C Drazen, Tracey T Sutton
Deep-sea fishes inhabit ∼75% of the biosphere and are a critical part of deep-sea food webs. Diet analysis and more recent trophic biomarker approaches, such as stable isotopes and fatty-acid profiles, have enabled the description of feeding guilds and an increased recognition of the vertical connectivity in food webs in a whole-water-column sense, including benthic-pelagic coupling. Ecosystem modeling requires data on feeding rates; the available estimates indicate that deep-sea fishes have lower per-individual feeding rates than coastal and epipelagic fishes, but the overall predation impact may be high...
October 13, 2016: Annual Review of Marine Science
https://www.readbyqxmd.com/read/27814033/zooplankton-and-the-ocean-carbon-cycle
#9
Deborah K Steinberg, Michael R Landry
Marine zooplankton comprise a phylogenetically and functionally diverse assemblage of protistan and metazoan consumers that occupy multiple trophic levels in pelagic food webs. Within this complex network, carbon flows via alternative zooplankton pathways drive temporal and spatial variability in production-grazing coupling, nutrient cycling, export, and transfer efficiency to higher trophic levels. We explore current knowledge of the processing of zooplankton food ingestion by absorption, egestion, respiration, excretion, and growth (production) processes...
October 17, 2016: Annual Review of Marine Science
https://www.readbyqxmd.com/read/27814032/quorum-sensing-in-marine-microbial-environments
#10
Laura R Hmelo
Quorum sensing (QS) is a form of chemical communication used by certain bacteria that regulates a wide range of biogeochemically important bacterial behaviors. Although QS was first observed in a marine bacterium nearly four decades ago, only in the past decade has there been a rise in interest in the role that QS plays in the ocean. It has become clear that QS, regulated by signals such as acylated homoserine lactones (AHLs) or furanosyl-borate diesters [autoinducer-2 (AI-2) molecules], is involved in important processes within the marine carbon cycle, in the health of coral reef ecosystems, and in trophic interactions between a range of eukaryotes and their bacterial associates...
October 21, 2016: Annual Review of Marine Science
https://www.readbyqxmd.com/read/27814031/coccolithophore-cell-biology-chalking-up-progress
#11
Alison R Taylor, Colin Brownlee, Glen Wheeler
Coccolithophores occupy a special position within the marine phytoplankton because of their production of intricate calcite scales, or coccoliths. Coccolithophores are major contributors to global ocean calcification and long-term carbon fluxes. The intracellular production of coccoliths requires modifications to cellular ultrastructure and metabolism that are surveyed here. In addition to calcification, which appears to have evolved with a diverse range of functions, several other remarkable features that likely underpin the ecological and evolutionary success of coccolithophores have recently been uncovered...
October 28, 2016: Annual Review of Marine Science
https://www.readbyqxmd.com/read/27814030/the-physiology-and-ecology-of-diapause-in-marine-copepods
#12
Mark F Baumgartner, Ann M Tarrant
Diapause is a type of dormancy that requires preparation, typically precedes the onset of unfavorable conditions, and necessitates a period of arrest before development can proceed. Two ecologically important groups of copepods have incorporated diapausing stages into their life histories. In freshwater, estuarine, and coastal environments, species within the Centropagoidea superfamily can produce resting eggs containing embryos that may be quiescent, diapausing, or in some intermediate state. Resting eggs sink into the sediments, remain viable over months to years, and form a reservoir from which the planktonic population is reestablished...
October 28, 2016: Annual Review of Marine Science
https://www.readbyqxmd.com/read/27814029/the-atlantic-meridional-overturning-circulation-and-abrupt-climate-change
#13
Jean Lynch-Stieglitz
Abrupt changes in climate have occurred in many locations around the globe over the last glacial cycle, with pronounced temperature swings on timescales of decades or less in the North Atlantic. The global pattern of these changes suggests that they reflect variability in the Atlantic meridional overturning circulation (AMOC). This review examines the evidence from ocean sediments for ocean circulation change over these abrupt events. The evidence for changes in the strength and structure of the AMOC associated with the Younger Dryas and many of the Heinrich events is strong...
October 28, 2016: Annual Review of Marine Science
https://www.readbyqxmd.com/read/27814028/anthropogenic-forcing-of-carbonate-and-organic-carbon-preservation-in-marine-sediments
#14
Richard Keil
Carbon preservation in marine sediments, supplemented by that in large lakes, is the primary mechanism that moves carbon from the active surficial carbon cycle to the slower geologic carbon cycle. Preservation rates are low relative to the rates at which carbon moves between surface pools, which has led to the preservation term largely being ignored when evaluating anthropogenic forcing of the global carbon cycle. However, a variety of anthropogenic drivers-including ocean warming, deoxygenation, and acidification, as well as human-induced changes in sediment delivery to the ocean and mixing and irrigation of continental margin sediments-all work to decrease the already small carbon preservation term...
November 2, 2016: Annual Review of Marine Science
https://www.readbyqxmd.com/read/27809340/identification-of-a-new-to-science-cyanobacterium-toxifilum-mysidocida-gen-nov-sp-nov-cyanobacteria-cyanophyceae
#15
Paul V Zimba, I-Shuo Huang, Jennifer E Foley, Eric W Linton
Cyanobacteria occupy many niches within terrestrial, planktonic, and benthic habitats. The diversity of habitats colonized, similarity of morphology, and phenotypic plasticity all contribute to the difficulty of cyanobacterial identification. An unknown marine filamentous cyanobacterium was isolated from an aquatic animal rearing facility having mysid mortality events. The cyanobacterium originated from Corpus Christi Bay, TX. Filaments are rarely solitary, benthic mat forming, unbranched, and narrowing at the ends...
November 3, 2016: Journal of Phycology
https://www.readbyqxmd.com/read/27799595/the-role-of-dissemination-as-a-fundamental-part-of-a-research-project-lessons-learned-from-sophie
#16
Esther Marín-González, Davide Malmusi, Lluís Camprubí, Carme Borrell
Dissemination and communication of research should be considered as an integral part of any research project. Both help in increasing the visibility of research outputs, public engagement in science and innovation, and confidence of society in research. Effective dissemination and communication are vital to ensure that the conducted research has a social, political, or economical impact. They draw attention of governments and stakeholders to research results and conclusions, enhancing their visibility, comprehension, and implementation...
October 31, 2016: International Journal of Health Services: Planning, Administration, Evaluation
https://www.readbyqxmd.com/read/27780593/citizen-science-datasets-reveal-drivers-of-spatial-and-temporal-variation-for-anthropogenic-litter-on-great-lakes-beaches
#17
Anna Vincent, Nate Drag, Olga Lyandres, Sarah Neville, Timothy Hoellein
Accumulation of anthropogenic litter (AL) on marine beaches and its ecological effects have been a major focus of research. Recent studies suggest AL is also abundant in freshwater environments, but much less research has been conducted in freshwaters relative to oceans. The Adopt-a-BeachTM (AAB) program, administered by the Alliance for the Great Lakes, organizes volunteers to act as citizen scientists by collecting and maintaining data on AL abundance on Great Lakes beaches. Initial assessments of the AAB records quantified sources and abundance of AL on Lake Michigan beaches, and showed that plastic AL was >75% of AL on beaches across all five Great Lakes...
January 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27777983/shewanella-baltica-ecotypes-have-wide-transcriptional-variation-under-the-same-growth-conditions
#18
W S Hambright, Jie Deng, James M Tiedje, Ingrid Brettar, Jorge L M Rodrigues
In bacterial populations, subtle expressional differences may promote ecological specialization through the formation of distinct ecotypes. In a barrier-free habitat, this process most likely precedes population divergence and may predict speciation events. To examine this, we used four sequenced strains of the bacterium Shewanella baltica, OS155, OS185, OS195, and OS223, as models to assess transcriptional variation and ecotype formation within a prokaryotic population. All strains were isolated from different depths throughout a water column of the Baltic Sea, occupying different ecological niches characterized by various abiotic parameters...
September 2016: MSphere
https://www.readbyqxmd.com/read/27771096/low-plastic-ingestion-rate-in-atlantic-cod-gadus-morhua-from-newfoundland-destined-for-human-consumption-collected-through-citizen-science-methods
#19
Max Liboiron, France Liboiron, Emily Wells, Natalie Richárd, Alexander Zahara, Charles Mather, Hillary Bradshaw, Judyannet Murichi
Marine microplastics are a contaminant of concern because their small size allows ingestion by a wide range of marine life. Using citizen science during the Newfoundland recreational cod fishery, we sampled 205 Atlantic cod (Gadus morhua) destined for human consumption and found that 5 had eaten plastic, an ingestion prevalence rate of 2.4%. This ingestion rate for Atlantic cod is the second lowest recorded rate in the reviewed published literature (the lowest is 1.4%), and the lowest for any fish in the North Atlantic...
October 19, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27769468/a-simple-method-for-the-determination-of-glyphosate-and-aminomethylphosphonic-acid-in-seawater-matrix-with-high-performance-liquid-chromatography-and-fluorescence-detection
#20
Shu Wang, Baomin Liu, Dongxing Yuan, Jian Ma
Glyphosate (GLYP) is an important herbicide which is also used as the phosphorus source for marine organisms. The wide applications of GLYP can lead to its accumulation in oceans and coastal waters, thus creating environmental issues. However, there is limited methods for detection of GLYP and its degradation product, aminomethylphosphonic acid (AMPA) in saline samples. Therefore, a simple and fast method for the quantification of GLYP and AMPA in seawater matrix has been developed based on the derivatization with 9-fluorenylmethylchloroformate (FMOC-Cl), separation with high performance liquid chromatography (HPLC) and detection with fluorescence detector (FLD)...
December 1, 2016: Talanta
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