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https://www.readbyqxmd.com/read/28346992/longitudinal-assessment-of-hydropeaking-impacts-on-various-scales-for-an-improved-process-understanding-and-the-design-of-mitigation-measures
#1
C Hauer, P Holzapfel, P Leitner, W Graf
Hydropeaking is one of the main pressures on the aquatic ecology in alpine rivers. Beside studies on abiotic process and biotic response on the local scale there is a lack in process understanding on the reach scale. Especially longitudinal changes of hydropeaking impacts based on retention processes have not been studied yet. Thus, based on unsteady one-dimensional and two-dimensional depth averaged modelling it was targeted to investigate possible changes in vertical ramping velocity for the discussion of possible mitigation measures at the local scale...
January 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346333/clinical-benefits-of-n-3-pufa-and-%C3%A9-linolenic-acid-in-patients-with-rheumatoid-arthritis
#2
Mirjana Veselinovic, Dragan Vasiljevic, Vesna Vucic, Aleksandra Arsic, Snjezana Petrovic, Aleksandra Tomic-Lucic, Maja Savic, Sandra Zivanovic, Vladislava Stojic, Vladimir Jakovljevic
(1) Background: Marine n-3 polyunsaturated fatty acids (PUFA) and ɤ-linolenic acid (GLA) are well-known anti-inflammatory agents that may help in the treatment of inflammatory disorders. Their effects were examined in patients with rheumatoid arthritis; (2) Methods: Sixty patients with active rheumatoid arthritis were involved in a prospective, randomized trial of a 12 week supplementation with fish oil (group I), fish oil with primrose evening oil (group II), or with no supplementation (group III). Clinical and laboratory evaluations were done at the beginning and at the end of the study; (3) Results: The Disease Activity Score 28 (DAS 28 score), number of tender joints and visual analogue scale (VAS) score decreased notably after supplementation in groups I and II (p < 0...
March 25, 2017: Nutrients
https://www.readbyqxmd.com/read/28345583/synergistic-effects-of-micro-electrolysis-photocatalysis-on-water-treatment-and-fish-performance-in-saline-recirculating-aquaculture-system
#3
Zhangying Ye, Shuo Wang, Weishan Gao, Haijun Li, Luowei Pei, Mingwei Shen, Songming Zhu
A new physico-chemical process for TAN (total ammonia nitrogen) removal and disinfection is introduced in saline recirculating aquaculture system (RAS), in which the biofilter is replaced with an integrated electrolysis cell and an activated carbon filter. The electrolysis cell which is based on micro current electrolysis combined with UV-light was self-designed. After the fundamental research, a small pilot scale RAS was operated for 30 days to verify the technical feasibility. The system was stocked by 42 GIFT tilapia (Oreochromis niloticus) fish with the rearing density of 13 kg/m(3)...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28344591/studying-the-genetics-of-resistance-to-cyhv-3-disease-using-introgression-from-feral-to-cultured-common-carp-strains
#4
Roni Tadmor-Levi, Efrat Asoulin, Gideon Hulata, Lior David
Sustainability and further development of aquaculture production are constantly challenged by outbreaks of fish diseases, which are difficult to prevent or control. Developing fish strains that are genetically resistant to a disease is a cost-effective and a sustainable solution to address this challenge. To do so, heritable genetic variation in disease resistance should be identified and combined together with other desirable production traits. Aquaculture of common carp has suffered substantial losses from the infectious disease caused by the cyprinid herpes virus type 3 (CyHV-3) virus and the global spread of outbreaks indicates that many cultured strains are susceptible...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28343270/magnetic-field-discrimination-learning-and-memory-in-the-yellow-stingray-urobatis-jamaicensis
#5
Kyle C Newton, Stephen M Kajiura
Elasmobranch fishes (sharks, skates, and rays) have been hypothesized to use the geomagnetic field as a cue for orienting and navigating across a wide range of spatial scales. Magnetoreception has been demonstrated in many invertebrate and vertebrate taxa, including elasmobranchs, but this sensory modality and the cognitive abilities of cartilaginous fishes are poorly studied. Wild caught yellow stingrays, Urobatis jamaicensis (N = 8), underwent conditioning to associate a magnetic stimulus with a food reward in order to elicit foraging behaviors...
March 25, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28341961/from-smooth-to-rough-from-water-to-air-the-intertidal-habitat-of-northern-clingfish-gobiesox-maeandricus
#6
Petra Ditsche, Madeline Hicks, Lisa Truong, Christina Linkem, Adam Summers
The Northern clingfish is a small, Eastern North Pacific fish that can attach to rough, fouled rocks in the intertidal. Their ability to attach to surfaces has been measured previously in the laboratory, and in this study, we show the roughness and fouling of the natural habitat of these fish. We introduce a new method for measuring surface roughness of natural substrates with time-limited accessibility. We expect this method to be broadly applicable in studies of animal/substrate surface interactions in habitats difficult to characterize...
April 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28337627/biological-impacts-of-local-vs-regional-land-use-on-a-small-tributary-of-the-seine-river-france-insights-from-a-food-web-approach-based-on-stable-isotopes
#7
Nicolas Hette-Tronquart, Thierry Oberdorff, Evelyne Tales, Amandine Zahm, Jérôme Belliard
As part of the landscape, streams are influenced by land use. Here, we contributed to the understanding of the biological impacts of land use on streams, investigating how landscape effects vary with spatial scales (local vs. regional). We adopted a food web approach integrating both biological structure and functioning, to focus on the overall effect of land use on stream biocœnosis. We selected 17 sites of a small tributary of the Seine River (France) for their contrasted land use, and conducted a natural experiment by sampling three organic matter sources, three macroinvertebrate taxa, and most of the fish community...
March 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28335439/mercury-levels-in-human-hair-and-farmed-fish-near-artisanal-and-small-scale-gold-mining-communities-in-the-madre-de-dios-river-basin-peru
#8
Aubrey L Langeland, Rebecca D Hardin, Richard L Neitzel
Artisanal and small-scale gold mining (ASGM) has been an important source of income for communities in the Madre de Dios River Basin in Peru for hundreds of years. However, in recent decades, the scale of ASGM activities in the region has increased dramatically, and exposures to a variety of occupational and environmental hazards related to ASGM, including mercury, are becoming more widespread. The aims of our study were to: (1) examine patterns in the total hair mercury level of human participants in several communities in the region and compare these results to the 2...
March 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28334677/centralized-management-of-sewage-sludge-and-agro-industrial-waste-through-co-composting
#9
M C Gutiérrez, A Serrano, J A Siles, A F Chica, M A Martín
In this research study, the co-composting process of a waste mixture containing strawberry extrudate, fish waste, sewage sludge and bulking agent (SEFW, 190:1:22:90 ratio) was carried out in a dynamic-solid respirometer at pilot scale. The aerobic biodegradability of the mixture was previously ensured in a static-liquid respirometer. The advantages and drawbacks of the SEFW co-composting process were subsequently identified through the determination of respirometric activity and the physical-chemical characterization of the waste, as well as the monitoring of odor emissions...
March 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28324508/in-vitro-preparation-and-crystallization-of-vertebrate-telomerase-subunits
#10
Jing Huang, Christopher J Bley, Dustin P Rand, Julian J L Chen, Ming Lei
Telomerase is a unique reverse transcriptase that replicates the telomeric DNA at most eukaryotic chromosomal ends. The telomerase consists of the catalytic protein subunit TERT and the RNA component TR that provides the template for telomeric DNA synthesis. In vitro reconstitution of telomerase core components in large quantity is the prerequisite to studying the catalytic mechanisms of telomerase at the structural level; however, large-scale preparation of recombinant telomerase, especially that of higher eukaryotes, has been a big challenge for a long time...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28323175/a-comparative-study-of-bio-inspired-protective-scales-using-3d-printing-and-mechanical-testing
#11
Roberto Martini, Yanis Balit, Francois Barthelat
Flexible natural armors from fish, alligators or armadillo are attracting an increasing amount of attention for their unique combinations of hardness, flexibility and light weight. The extreme contrast of stiffness between hard scales and surrounding soft tissues gives rise to unusual and attractive mechanisms, which now serve as models for the design of bio-inspired armors. Despite this growing interest, there is little guideline for the choice of materials, optimum thickness, size, shape and arrangement for the protective scales...
March 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28323060/food-neophobia-and-its-association-with-intake-of-fish-and-other-selected-foods-in-a-norwegian-sample-of-toddlers-a-cross-sectional-study
#12
Sissel H Helland, Elling Bere, Helga Birgit Bjørnarå, Nina Cecilie Øverby
Reluctance to try novel foods (food neophobia) prevents toddlers from accepting healthy foods such as fish and vegetables, which are important for child development and health. Eating habits established between ages 2 and 3 years normally track into adulthood and are therefore highly influential; even so, there are few studies addressing food neophobia in this age group. This cross-sectional study investigated the relationship between the level of food neophobia and the frequency of toddlers' intake of fish, meat, berries, fruit, vegetables, and sweet and salty snacks...
March 18, 2017: Appetite
https://www.readbyqxmd.com/read/28323053/species-delimitation-and-phylogenetic-reconstruction-of-the-sinipercids-perciformes-sinipercidae-based-on-target-enrichment-of-thousands-of-nuclear-coding-sequences
#13
Shuli Song, Jinliang Zhao, Chenhong Li
The sinipercids are freshwater fishes endemic to East Asia, mainly in China. Phylogenetic studies on the sinipercids have made great progress in the last decades, but interspecific relationships and evolutionary history of the sinipercids remain unresolved. Lack of distinctive morphological characters leads to problems in validating of some species, such as Siniperca loona. Moreover, genetic data are needed to delimitate species pairs with explicit hypothesis testing, such as in S. chuatsi vs. S. kneri and Coreoperca whiteheadi vs...
March 17, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28322846/did-biogeographical-processes-shape-the-monogenean-community-of-butterflyfishes-in-the-tropical-indo-west-pacific-region
#14
M Reverter, T H Cribb, S C Cutmore, R A Bray, V Parravicini, P Sasal
Geographical distribution of parasite species can provide insights into the evolution and diversity of parasitic communities. Biogeography of marine parasites is poorly known, especially because it requires an understanding of host-parasite interactions, information that is rare, especially over large spatial scales. Here, we have studied the biogeographical patterns of dactylogyrid parasites of chaetodontids, one of the most well-studied fish families, in the tropical Indo-west Pacific region. Dactylogyrid parasites were collected from gills of 34 butterflyfish species (n=560) at nine localities within an approximate area of 62millionkm(2)...
March 18, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28314818/allometric-analysis-detects-brain-size-independent-effects-of-sex-and-sex-chromosome-complement-on-human-cerebellar-organization
#15
Catherine Mankiw, Min Tae M Park, P K Reardon, Ari M Fish, Liv S Clasen, Deanna Greenstein, Jay N Giedd, Jonathan D Blumenthal, Jason P Lerch, M Mallar Chakravarty, Armin Raznahan
The cerebellum is a large hindbrain structure that is increasingly recognized for its contribution to diverse domains of cognitive and affective processing in human health and disease. Although several of these domains are sex-biased, our fundamental understanding of cerebellar sex differences - including their spatial distribution, potential biological determinants, and independence from brain volume variation - lags far behind that for the cerebrum. Here, we harness automated neuroimaging methods for cerebellar morphometrics in 417 individuals to (i) localize normative male-female differences in raw cerebellar volume, (ii) compare these to sex chromosome effects estimated across five rare X-/Y-chromosome aneuploidy (SCA) syndromes, and (iii) clarify brain size-independent effects of sex and SCA on cerebellar anatomy using a generalizable allometric approach which considers scaling relationships between regional cerebellar volume and brain volume in health...
March 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28314615/distinguishing-globally-driven-changes-from-regional-and-local-scale-impacts-the-case-for-long-term-and-broad-scale-studies-of-recovery-from-pollution
#16
S J Hawkins, A J Evans, N Mieszkowska, L C Adams, S Bray, M T Burrows, L B Firth, M J Genner, K M Y Leung, P J Moore, K Pack, H Schuster, D W Sims, M Whittington, E C Southward
Marine ecosystems are subject to anthropogenic change at global, regional and local scales. Global drivers interact with regional- and local-scale impacts of both a chronic and acute nature. Natural fluctuations and those driven by climate change need to be understood to diagnose local- and regional-scale impacts, and to inform assessments of recovery. Three case studies are used to illustrate the need for long-term studies: (i) separation of the influence of fishing pressure from climate change on bottom fish in the English Channel; (ii) recovery of rocky shore assemblages from the Torrey Canyon oil spill in the southwest of England; (iii) interaction of climate change and chronic Tributyltin pollution affecting recovery of rocky shore populations following the Torrey Canyon oil spill...
March 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28303705/the-sense-of-life-satisfaction-versus-dietary-choices-of-young-women-doing-fitness-for-recreational-purposes
#17
Maria Gacek
Background: : The health potential of a person can be improved thanks to recreational physical activity and rational diet. The sense of life satisfaction is also one of significant health resources. Objective: The aim of the study was to analyze the relations between the level of life satisfaction and the frequency of consuming selected products in the group of young women who engage in fitness for recreational purposes. Material and Methods: The study involved 200 young women (20-30 years old) who regularly do recreational physical activity in fitness clubs in Małopolska...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28301558/encountering-a-bait-is-necessary-but-insufficient-to-explain-individual-variability-in-vulnerability-to-angling-in-two-freshwater-benthivorous-fish-in-the-wild
#18
Christopher Thomas Monk, Robert Arlinghaus
Fish personality traits, such as swimming activity, or personality related emergent behavioural properties, such as the degree of space use shown by an individual fish, should affect encounter rates between individual fish and fishing gear. Increased encounters should in turn drive vulnerability to capture by passively operated gears. However, empirical evidence documenting a relationship between activity-based behaviours and vulnerability to capture by passive fishing gear in the wild is limited. Using whole-lake acoustic telemetry, we first documented significant repeatabilities over several months in a suite of encounter rate-associated behaviours (swimming distance, activity space size, time on baited feeding sites, switching frequency among baited feeding sites, distance to the lake bottom) in two recreationally important benthivorous cyprinid species, the common carp (Cyprinus carpio) and tench (Tinca tinca)...
2017: PloS One
https://www.readbyqxmd.com/read/28300113/global-warming-and-recurrent-mass-bleaching-of-corals
#19
Terry P Hughes, James T Kerry, Mariana Álvarez-Noriega, Jorge G Álvarez-Romero, Kristen D Anderson, Andrew H Baird, Russell C Babcock, Maria Beger, David R Bellwood, Ray Berkelmans, Tom C Bridge, Ian R Butler, Maria Byrne, Neal E Cantin, Steeve Comeau, Sean R Connolly, Graeme S Cumming, Steven J Dalton, Guillermo Diaz-Pulido, C Mark Eakin, Will F Figueira, James P Gilmour, Hugo B Harrison, Scott F Heron, Andrew S Hoey, Jean-Paul A Hobbs, Mia O Hoogenboom, Emma V Kennedy, Chao-Yang Kuo, Janice M Lough, Ryan J Lowe, Gang Liu, Malcolm T McCulloch, Hamish A Malcolm, Michael J McWilliam, John M Pandolfi, Rachel J Pears, Morgan S Pratchett, Verena Schoepf, Tristan Simpson, William J Skirving, Brigitte Sommer, Gergely Torda, David R Wachenfeld, Bette L Willis, Shaun K Wilson
During 2015-2016, record temperatures triggered a pan-tropical episode of coral bleaching, the third global-scale event since mass bleaching was first documented in the 1980s. Here we examine how and why the severity of recurrent major bleaching events has varied at multiple scales, using aerial and underwater surveys of Australian reefs combined with satellite-derived sea surface temperatures. The distinctive geographic footprints of recurrent bleaching on the Great Barrier Reef in 1998, 2002 and 2016 were determined by the spatial pattern of sea temperatures in each year...
March 15, 2017: Nature
https://www.readbyqxmd.com/read/28296966/an-oral-multispecies-biofilm-model-for-high-content-screening-applications
#20
Nadine Kommerein, Sascha N Stumpp, Mathias Müsken, Nina Ehlert, Andreas Winkel, Susanne Häussler, Peter Behrens, Falk F R Buettner, Meike Stiesch
Peri-implantitis caused by multispecies biofilms is a major complication in dental implant treatment. The bacterial infection surrounding dental implants can lead to bone loss and, in turn, to implant failure. A promising strategy to prevent these common complications is the development of implant surfaces that inhibit biofilm development. A reproducible and easy-to-use biofilm model as a test system for large scale screening of new implant surfaces with putative antibacterial potency is therefore of major importance...
2017: PloS One
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