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https://www.readbyqxmd.com/read/28437776/large-scale-seaweed-cultivation-diverges-water-and-sediment-microbial-communities-in-the-coast-of-nan-ao-island-south-china-sea
#1
Xinfei Xie, Zhili He, Xiaojuan Hu, Huaqun Yin, Xueduan Liu, Yufeng Yang
Seaweed cultivation not only provides economy benefits, but also remediates the environment contaminated by mariculture of animals (e.g., fish, shrimps). However, the response of microbial communities to seaweed cultivation is poorly understood. In this study, we analyzed the diversity, composition, and structure of water and sediment microbial communities at a seaweed, Gracilaria lemaneiformis, cultivation zone and a control zone near Nan'ao Island, South China Sea by MiSeq sequencing of 16S rRNA gene amplicons...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28434664/marine-debris-in-beaches-of-the-southwestern-atlantic-an-assessment-of-their-abundance-and-mass-at-different-spatial-scales-in-northern-coastal-argentina
#2
Maria Eugenia Becherucci, Alan Federico Rosenthal, Juan Pablo Seco Pon
Argentina is currently undergoing an intensive development of coastal-oriented tourism due to the temperate climate and coastal sceneries of the Southwestern Atlantic and particularly its wide ocean-open sandy beaches, which may turn into an important contributor of marine debris to the beaches. This study was designed to assess at four spatial scales (i) the variation of the abundance and mass of marine debris and (ii) the composition and sources of these items in sandy-tourist beaches of coastal zones of the province of Buenos Aires, in northern Argentina...
April 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28432153/comparison-of-functional-and-anatomical-estimations-of-visual-acuity-in-two-species-of-coral-reef-fish
#3
Amira N Parker, Kerstin A Fritsches, Cait Newport, Guy Wallis, Ulrike E Siebeck
The high contrast, complex patterns typical of many reef fish serve several purposes, including providing disruptive camouflage and a basis for vision-based communication. In trying to understand the role of a specific pattern it is important to first assess the extent to which an observer can resolve the pattern, itself determined, at least in part, by the observer's visual acuity. In this study, we study the visual acuity of two species of reef fish using both anatomical and behavioural estimates. The two species in question share a common habitat but are members of different trophic levels (predator vs...
April 21, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28429510/mixing-of-water-masses-caused-by-a-drifting-iceberg-affects-bacterial-activity-community-composition-and-substrate-utilization-capability-in-the-southern-ocean
#4
Julie Dinasquet, Inga Richert, Ramiro Logares, Patricia Yager, Stefan Bertilsson, Lasse Riemann
The number of icebergs produced from ice-shelf disintegration has increased over the past decade in Antarctica. These drifting icebergs mix the water column, influence stratification and nutrient condition, and can affect local productivity and food web composition. Data on whether icebergs affect bacterioplankton function and composition are scarce, however. We assessed the influence of iceberg drift on bacterial community composition and on their ability to exploit carbon substrates during summer in the coastal Southern Ocean...
April 21, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28428868/metapopulation-patterns-of-additive-and-nonadditive-genetic-variance-in-the-sea-bass-dicentrarchus-labrax
#5
Bruno Guinand, Marc Vandeputte, Mathilde Dupont-Nivet, Alain Vergnet, Pierrick Haffray, Hervé Chavanne, Béatrice Chatain
Describing and explaining the geographic within-species variation in phenotypes ("phenogeography") in the sea over a species distribution range is central to our understanding of a variety of eco-evolutionary topics. However, phenogeographic studies that have a large potential to investigate adaptive variation are overcome by phylogeographic studies, still mainly focusing on neutral markers. How genotypic and phenotypic data could covary over large geographic scales remains poorly understood in marine species...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428147/title-high-genetic-diversities-between-isolates-of-the-fish-parasite-cryptocaryon-irritans-ciliophora-suggest-multiple-cryptic-species
#6
Hongshu Chi, Patricia Taik, Emily J Foley, Alycia C Racicot, Hilary M Gray, Katherine E Guzzetta, Hsin-Yun Lin, Yen-Ling Song, Che-Huang Tung, Kosuke Zenke, Tomoyoshi Yoshinaga, Chao-Yin Cheng, Wei-Jen Chang, Hui Gong
The ciliate protozoan Cryptocaryon irritans parasitizes marine fish and causes lethal white spot disease. Sporadic infections as well as large-scale outbreaks have been reported globally and the parasite's broad host range poses particular threat to the aquaculture and ornamental fish markets. In order to better understand C. irritans' population structure, we sequenced and compared mitochondrial cox-1, SSU rRNA, and ITS-1 sequences from 8 new isolates of C. irritans collected in China, Japan, and Taiwan. We detected two SSU rRNA haplotypes, which differ at three positions, separating the isolates into two main groups (I and II)...
April 18, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28425426/production-of-red-tilapia-oreochromis-spp-in-floating-cages-in-the-mekong-delta-vietnam-mortality-and-health-management
#7
Annette S Boerlage, Tu Thanh Dung, Tran Thi Hoa, Jeffrey Davidson, Henrik Stryhn, K Larry Hammell
The Mekong Delta in Vietnam is one of the most productive aquaculture regions in the world, in which the red tilapia (Oreochromis spp.) industry is a small-scale industry that mainly supplies local markets in the delta region. Little is known about the frequency of mortality events and health management in this sector. We describe red tilapia floating cage production systems in the Mekong Delta, Vietnam, for the purposes of quantifying mortality and associated production factors, and describing practices that may influence pathogen introduction and spread to and from farms...
April 20, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28425096/influence-of-coral-cover-and-structural-complexity-on-the-accuracy-of-visual-surveys-of-coral-reef-fish-communities
#8
D J Coker, J P Nowicki, N A J Graham
Using manipulated patch reefs with combinations of varying live-coral cover (low, medium and high) and structural complexity (low and high), common community metrics (abundance, diversity, richness and community composition) collected through standard underwater visual census techniques were compared with exhaustive collections using a fish anaesthetic (clove oil). This study showed that reef condition did not influence underwater visual census estimates at a community level, but reef condition can influence the detectability of some small and cryptic species and this may be exacerbated if surveys are conducted on a larger scale...
April 19, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28424092/analyzing-the-association-between-fish-consumption-and-osteoporosis-in-a-sample-of-chinese-men
#9
Xia Li, Tao Lei, Zihui Tang, Jingcheng Dong
BACKGROUND: The main purpose of this study was to estimate the associations between frequency of fish food consumption and osteoporosis (OP) in general Chinese men. METHODS: We conducted a large-scale, community-based, cross-sectional study to investigate the associations by using self-report questionnaire to access frequency of fish food intake. A total of 1092 men were available for data analysis in this study. Multiple regression models controlling for confounding factors to include frequency of fish food consumption variable were performed to investigate the relationships for OP...
April 19, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28423974/competitive-bass-anglers-a-new-concern-in-sports-medicine
#10
Connor R Read, Shawna L Watson, Jorge L Perez, A Reed Estes
OBJECTIVE: Competitive bass angling involves sport fishing against other anglers while targeting a species of fish known as the black basses. Due to the rapidly growing popularity of high school competitive bass angling in Alabama and the nature of the casting motion similar to that of overhead athletes, we sought to examine the prevalence of sports type injuries in this population. METHODS: In spring 2016, an anonymous survey was distributed across two large scale competitive high school fishing tournaments, allowing for a broad sampling of anglers throughout the state of Alabama...
April 19, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28422305/new-host-record-and-molecular-characterization-of%C3%A2-dicauda-atherinoidi-hoffman-walker-bivalvulida-myxobolidae-a-parasite-of-the-emerald-shiner-notropis-atherinoides-rafinesque-1818-and-mimic%C3%A2-shiner-notropis-vollucellus-cope-1865
#11
T P Loch, T G Rosser, W A Baumgartner, T Boontai, M Faisal, M J Griffin
Updated morphological and histopathological descriptions for Dicauda atherinoidi (Bivalvulida:Myxobolidae) and an expanded host range are supplemented with the first molecular data and phylogenetic analyses of the genus. Plasmodia were located on the head, ventrum/body and fins of infected emerald shiner Notropis atherinoides Rafinesque, 1818 and mimic shiner Notropis vollucellus Cope, 1865, a new host species. Myxospores were spherical, ranging 9.3-11.4 μm (10.5 ± 0.4) in length, 9.0-11.0 μm (9.7 ± 0...
April 19, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28421787/adherence-to-the-mediterranean-diet-pattern-cognitive-status-and-depressive-symptoms-in-an-elderly-non-institutionalized-population
#12
Ana Hernández-Galiot, Isabel Goñi
INTRODUCTION: Scientific evidence indicates that adherence to the Mediterranean diet protects against the deterioration of cognitive status and depressive symptoms during aging. However, few studies have been conducted in elderly non-institutionalized subjects. OBJECTIVE: This study evaluated the relation between the adherence to the Mediterranean dietary pattern and cognitive status and depressive symptoms in an elderly population over 75 years. METHODS: A cross-sectional study was conducted in a Mediterranean city (Garrucha, Spain) in 79 elderly people over 75 (36 men and 41 women)...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421268/using-a-population-model-to-inform-the-management-of-river-flows-and-invasive-carp-cyprinus-carpio
#13
John D Koehn, Charles R Todd, Brenton P Zampatti, Ivor G Stuart, Anthony Conallin, Leigh Thwaites, Qifeng Ye
Carp are a highly successful invasive fish species, now widespread, abundant and considered a pest in south-eastern Australia. To date, most management effort has been directed at reducing abundances of adult fish, with little consideration of population growth through reproduction. Environmental water allocations are now an important option for the rehabilitation of aquatic ecosystems, particularly in the Murray-Darling Basin. As carp respond to flows, there is concern that environmental watering may cause floodplain inundation and provide access to spawning habitats subsequently causing unwanted population increase...
April 18, 2017: Environmental Management
https://www.readbyqxmd.com/read/28420611/characterization-of-the-conbercept-gene-localization-in-dhfr-amplified-cho-cells-using-fluorescence-in-situ-hybridization
#14
Shi Minglei, Lai Weili, Yi Tianhong, Ke Xiao, Zhao Zhihu
Chinese-hamster ovary (CHO) cells are most widely used for mammalian protein expression. After integration into the CHO genome, the exogenous gene may be lost in the process of large-scale protein production due to the removal of related selection pressures. Therefore, it is necessary to test its stability in the genome. Conbercept is a fusion protein that specifically binds to the various isoforms of vascular endothelial growth factor (VEGF)-A, VEGF-B, and placental growth factor (PlGF), thereby exerting anti-angiogenic activities...
April 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28416876/comparison-of-rheological-behaviors-and-nanostructure-of-bighead-carp-scales-gelatin-modified-by-different-modification-methods
#15
Tao Huang, Zong-Cai Tu, Hui Wang, Wei Liu, Lu Zhang, Yan Zhang, Xin-Chen ShangGuan
In this study, microbial transglutaminase (MTGase) and pectin were compared to modify bighead carp (Hypophthalmichthys nobilis) scale gelatin. The functional properties of modified fish scales gelatin (FSG) were largely improved, including melting temperature and rheological behavior. While, modification methods decreased the triple-helix content and destroyed the single left-hand helix chain of modified FSG as investigated by X-ray diffraction. MTGase could induce the denser and finer gels network, but had none significant effect on nanostructural properties of fish gelatin...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28414787/water-abstraction-affects-abundance-size-structure-and-growth-of-two-threatened-cyprinid-fishes
#16
Roberto Merciai, Carlota Molons-Sierra, Sergi Sabater, Emili García-Berthou
Hydrologic alteration is a major threat to freshwater biota, and particularly fish, in many river courses around the world. We analyzed and compared the effects of water abstraction on two threatened cyprinid fishes of contrasting ecology (the Mediterranean barbel Barbus meridionalis and the Catalan chub Squalius laietanus) in a Mediterranean stream. We compared abundance, size-structure, growth, and condition of both species across perennial and artificially intermittent reaches affected by water abstraction...
2017: PloS One
https://www.readbyqxmd.com/read/28410668/lipid-correlates-of-antidepressant-response-to-omega-3-polyunsaturated-fatty-acid-supplementation-a-pilot-study
#17
Licinia Ganança, Hanga C Galfalvy, Maria A Oquendo, Adrienne Hezghia, Thomas B Cooper, J John Mann, M Elizabeth Sublette
Low omega-3 polyunsaturated fatty acid (PUFA) levels are seen in major depression. We examined effects of six weeks of fish oil supplementation on clinical characteristics in 16 patients with symptomatic major depressive disorder, and tested plasma phospholipid levels of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) as correlates of clinical response. Depression symptoms improved after supplementation (p=0.007). The reduction in depression severity was not predicted by baseline PUFA levels but did exhibit a relationship with endpoint PUFAs, correlating negatively with DHA as a percentage of plasma phospholipids (DHA%; R(2)=0...
April 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28406935/micro-level-explanations-for-emergent-patterns-of-self-governance-arrangements-in-small-scale-fisheries-a-modeling-approach
#18
Emilie Lindkvist, Xavier Basurto, Maja Schlüter
Small-scale fisheries (SSFs) in developing countries are expected to play a significant role in poverty alleviation and enhancing food security in the decades to come. To realize this expectation, a better understanding of their informal self-governance arrangements is critical for developing policies that can improve fishers' livelihoods and lead to sustainable ecosystem stewardship. The goal of this paper is to develop a more nuanced understanding of micro-level factors-such as fishers' characteristics and behavior-to explain observed differences in self-governance arrangements in Northwest Mexico...
2017: PloS One
https://www.readbyqxmd.com/read/28406918/a-spatial-method-to-calculate-small-scale-fisheries-effort-in-data-poor-scenarios
#19
Andrew Frederick Johnson, Marcia Moreno-Báez, Alfredo Giron-Nava, Julia Corominas, Brad Erisman, Exequiel Ezcurra, Octavio Aburto-Oropeza
To gauge the collateral impacts of fishing we must know where fishing boats operate and how much they fish. Although small-scale fisheries land approximately the same amount of fish for human consumption as industrial fleets globally, methods of estimating their fishing effort are comparatively poor. We present an accessible, spatial method of calculating the effort of small-scale fisheries based on two simple measures that are available, or at least easily estimated, in even the most data-poor fisheries: the number of boats and the local coastal human population...
2017: PloS One
https://www.readbyqxmd.com/read/28404821/a-hypervariable-mitochondrial-protein-coding-sequence-associated-with-geographical-origin-in-a-cosmopolitan-bloom-forming-alga-heterosigma-akashiwo
#20
Aiko Higashi, Satoshi Nagai, Sergio Seone, Shoko Ueki
Geographical distributions of phytoplankton species can be defined by events on both evolutionary time and shorter scales, e.g. recent climate changes. Additionally, modern industrial activity, including the transport of live fish and spat for aquaculture and aquatic microorganisms in ship ballast water, may aid the spread of phytoplankton. Obtaining a reliable marker is key to gaining insight into the phylogeographic history of a species. Here, we report a hypervariable mitochondrial gene in the cosmopolitan bloom-forming alga, Heterosigma akashiwo We compared the entire mitochondrial genome sequences of seven H...
April 2017: Biology Letters
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