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https://www.readbyqxmd.com/read/28926005/social-and-economic-aspects-of-aquatic-animal-health
#1
K E Adam, G J Gunn
Aquaculture is an increasingly important source of animal protein for a growing global population. Disease is a major constraint to production, with resultant socio-economic impacts for individuals, communities and economies which rely on aquaculture. Aquatic animal health is also strongly influenced by human factors, ranging from international trade regulations to the behaviours of individuals working in aquaculture. This article summarises the human factors associated with aquaculture production using international examples for illustration...
April 2017: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28923406/negative-environmental-impacts-of-antibiotic-contaminated-effluents-from-pharmaceutical-industries
#2
Ana Bielen, Ana Šimatović, Josipa Kosić-Vukšić, Ivan Senta, Marijan Ahel, Sanja Babić, Tamara Jurina, Juan José González Plaza, Milena Milaković, Nikolina Udiković-Kolić
Effluents from pharmaceutical industries are recognized as significant contributors to aquatic pollution with antibiotics. Although such pollution has been mostly reported in Asia, knowledge on industrial discharges in other regions of the world, including Europe, and on the effects associated with such exposures is still limited. Thus, we performed chemical, microbiological and ecotoxicological analyses of effluents from two Croatian pharmaceutical industries during four seasons. In treated effluents of the company synthesizing macrolide antibiotic azithromycin (AZI), the total concentration of AZI and two macrolide by-products from its synthesis was 1-3 orders of magnitude higher in winter and springtime (up to 10...
September 9, 2017: Water Research
https://www.readbyqxmd.com/read/28922515/increased-resource-use-efficiency-amplifies-positive-response-of-aquatic-primary-production-to-experimental-warming
#3
James M Hood, Jonathan P Benstead, Wyatt F Cross, Alexander D Huryn, Philip W Johnson, Gísli M Gíslason, James R Junker, Daniel Nelson, Jón S Ólafsson, Chau Tran
Climate warming is affecting the structure and function of river ecosystems, including their role in transforming and transporting carbon (C), nitrogen (N), and phosphorus (P). Predicting how river ecosystems respond to warming has been hindered by a dearth of information about how otherwise well-studied physiological responses to temperature scale from organismal to ecosystem levels. We conducted an ecosystem-level temperature manipulation to quantify how coupling of stream ecosystem metabolism and nutrient uptake responded to a realistic warming scenario...
September 18, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28921992/a-mechanistic-understanding-of-the-synergistic-potential-of-azole-fungicides-in-the-aquatic-invertebrate-gammarus-pulex
#4
Andrea Rösch, Michele Gottardi, Caroline Vignet, Nina Cedergreen, Juliane Hollender
Azole fungicides are known inhibitors of the important enzyme class cytochrome P450 monooxygenases (CYPs), thereby influencing the detoxification of co-occurring substances via biotransformation. This synergism in mixtures containing an azole has mostly been studied by effect measurements, while the underlying mechanism has been less well investigated. In this study, six azole fungicides (cyproconazole, epoxiconazole, ketoconazole, prochloraz, propiconazole and tebuconazole) were selected to investigate their synergistic potential and their CYP inhibition strength in the aquatic invertebrate Gammarus pulex...
September 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28920683/fate-of-flumioxazin-in-aquatic-plants-two-algae-pseudokirchneriella-subcapitata-synechococcus-sp-duckweed-lemna-sp-and-water-milfoil-myriophyllum-elatinoides
#5
Daisuke Ando, Takuo Fujisawa, Toshiyuki Katagi
Flumioxazin separately 14C-labeled at 1,2-positions of the tetrahydrophthalimide moiety or uniformly labeled at the phenyl ring was exposed to two algae and duckweed via water-layer, and water milfoil via water-layer or bottom-sediment for 14 days to investigate uptake and metabolic profiles in these aquatic plants. While 14C-Flumioxazin received immediate hydrolysis through maleimide ring opening and amide bond cleavage with its hydrolytic half-life of <1 day in both water and sediment, the 14C-plant uptake was ≤4...
September 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28919903/the-role-of-soil-solarization-in-india-how-an-unnoticed-practice-could-support-pest-control
#6
REVIEW
Harsimran K Gill, Iqbal S Aujla, Luigi De Bellis, Andrea Luvisi
Plant protection represents one of the strategies to fill the yield gap and to achieve food security, a key topic for India development. Analysis of climate risks for crops indicates that South Asia is one of the regions most exposed to the adverse impact on many plants that are relevant to inhabitants exposed to food safety risks. Furthermore, accumulation of pesticide residues in the aquatic and other ecosystems is becoming a significant threat in India. These perspectives require to develop programs of crop protection that can be feasible according to Indian rural development and pollution policy...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28919428/metal-mediated-oxidation-of-fluoroquinolone-antibiotics-in-water-a-review-on-kinetics-transformation-products-and-toxicity-assessment
#7
Mingbao Feng, Zunyao Wang, Dionysios D Dionysiou, Virender K Sharma
Fluoroquinolones (FQs) are among the most potent antimicrobial agents, which have seen their increasing use as human and veterinary medicines to control bacterial infections. FQs have been extensively found in surface water and municipal wastewaters, which has raised great concerns due to their negative impacts to humans and ecological health. It is of utmost importance that FQs are treated before their release into the environment. This paper reviews oxidative removal of FQs using reactive oxygen (O3 and OH), sulfate radicals (SO4(-)), and high-valent transition metal (Mn(VII) and Fe(VI)) species...
August 30, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28918369/the-development-of-biodiversity-conservation-measures-in-china-s-hydro-projects-a-review
#8
REVIEW
Ruiqiao Bai, Xuehua Liu, Xiaofei Liu, Lanmei Liu, Jianping Wang, Sihui Liao, Annah Zhu, Zhouyuan Li
The hydropower capacity of China ranks first in the world and accounts for approximately 20% of the total energy production in the country. While hydropower has substantially contributed to meeting China's renewable energy targets and providing clean energy to rural areas, the development of hydropower in China has been met with significant controversy. Ecologically, hydro projects alter the landscape, with potential impacts to the country's aquatic biodiversity. Over the past four decades in China, various mainstream opinions and misunderstandings have been presented concerning how to alleviate the negative impacts of hydro projects on aquatic ecosystems...
September 14, 2017: Environment International
https://www.readbyqxmd.com/read/28917946/cellular-uptake-and-intracellular-localization-of-poly-acrylic-acid-nanoparticles-in-a-rainbow-trout-oncorhynchus-mykiss-gill-epithelial-cell-line-rtgill-w1
#9
Lindsey C Felix, Van A Ortega, Greg G Goss
The ever-growing production of engineered nanoparticles (NPs) for use in many agricultural, commercial, consumer, and industrial applications will lead to their accidental or intentional release into the environment. Potential routes of environmental exposure include manufacturing or transport spills, disposal of NP-containing products down the drain and/or in landfills, as well as direct usage on agricultural land. Therefore, NPs will inevitably contaminate aquatic environments and interact with resident organisms...
September 7, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28913724/use-of-phytoproductivity-data-in-the-choice-of-native-plant-species-to-restore-a-degraded-coal-mining-site-amended-with-a-stabilized-industrial-organic-sludge
#10
Claudete G Chiochetta, Hela Toumi, Renata F S Böhm, Fernanda Engel, Gabriel Poyer-Radetski, Leonardo R Rörig, Fabrizio Adani, Claudemir M Radetski
Coal mining-related activities result in a degraded landscape and sites associated with large amounts of dumped waste material. The arid soil resulting from acid mine drainage affects terrestrial and aquatic ecosystems, and thus, site remediation programs must be implemented to mitigate this sequential deleterious processes. A low-cost alternative material to counterbalance the affected physico-chemical-microbiological aspects of the degraded soil is the amendment with low contaminated and stabilized industrial organic sludge...
September 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28912552/under-ice-availability-of-phytoplankton-lipids-is-key-to-freshwater-zooplankton-winter-survival
#11
Guillaume Grosbois, Heather Mariash, Tobias Schneider, Milla Rautio
Shortening winter ice-cover duration in lakes highlights an urgent need for research focused on under-ice ecosystem dynamics and their contributions to whole-ecosystem processes. Low temperature, reduced light and consequent changes in autotrophic and heterotrophic resources alter the diet for long-lived consumers, with consequences on their metabolism in winter. We show in a survival experiment that the copepod Leptodiaptomus minutus in a boreal lake does not survive five months under the ice without food...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28911870/microplastics-releasing-from-personal-care-and-cosmetic-products-in-china
#12
Kun Lei, Fei Qiao, Qing Liu, Zhanliang Wei, Hongli Qi, Song Cui, Xue Yue, Yixiang Deng, Lihui An
Microplastics (MPs) have become a major global issue; their release from various products affects the aquatic environment, especially marine ecosystems. As a primary source of MPs, personal care and cosmetics products (PCCPs) containing MPs contribute to this environmental risk. We visited several supermarket chains in Beijing, China to identify PCCPs containing MPs. Overall, 7.1% of facial cleansers contained MPs, with an average weight of 25.04±10.69mgMP/g and average size of 313±130μm; whereas, 2.2% of shower gel products contained an average weight of 17...
September 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28910965/actinobacteria-phylogenomics-selective-isolation-from-an-iron-oligotrophic-environment-and-siderophore-functional-characterization-unveil-new-desferrioxamine-traits
#13
Pablo Cruz-Morales, Hilda E Ramos-Aboites, Cuauhtémoc Licona-Cassani, Nelly Selem-Mójica, Paulina M Mejía-Ponce, Valeria Souza-Saldívar, Francisco Barona-Gómez
Desferrioxamines are hydroxamate siderophores widely conserved in both aquatic and soil-dwelling Actinobacteria. While the genetic and enzymatic bases of siderophore biosynthesis and their transport in model families of this phylum are well understood, evolutionary studies are lacking. Here, we perform a comprehensive desferrioxamine-centric (des genes) phylogenomic analysis, which includes the genomes of six novel strains isolated from an iron and phosphorous depleted oasis in the Chihuahuan desert of Mexico...
September 1, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28910962/pharmaceuticals-and-other-anthropogenic-chemicals-in-atmospheric-particulates-and-precipitation
#14
Mark L Ferrey, M Coreen Hamilton, Will J Backe, Kurt E Anderson
Air and precipitation samples were analyzed by liquid chromatography tandem mass spectrometry (LC-MS/MS) and gas chromatography mass spectrometry (GC-MS) for pharmaceuticals, personal care products, and other commercial chemicals within the St. Paul/Minneapolis metropolitan area of Minnesota, U.S. Of the 126 chemicals analyzed, 17 were detected at least once. Bisphenol A, N,N-diethyl-meta-toluamide (DEET), and cocaine were the most frequently detected; their maximum concentrations in snow were 3.80, 9.49, and 0...
September 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28904346/brain-damage-and-behavioural-disorders-in-fish-induced-by-plastic-nanoparticles-delivered-through-the-food-chain
#15
Karin Mattsson, Elyse V Johnson, Anders Malmendal, Sara Linse, Lars-Anders Hansson, Tommy Cedervall
The tremendous increases in production of plastic materials has led to an accumulation of plastic pollution worldwide. Many studies have addressed the physical effects of large-sized plastics on organisms, whereas few have focused on plastic nanoparticles, despite their distinct chemical, physical and mechanical properties. Hence our understanding of their effects on ecosystem function, behaviour and metabolism of organisms remains elusive. Here we demonstrate that plastic nanoparticles reduce survival of aquatic zooplankton and penetrate the blood-to-brain barrier in fish and cause behavioural disorders...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28902987/understanding-reduction-kinetics-of-aqueous-vanadium-v-and-transformation-products-using-rotating-ring-disk-electrode
#16
Gongde Chen, Haizhou Liu
Vanadium(V) is an emerging contaminant in the most recent EPA's candidate contaminant list (CCL4). The redox chemistry of vanadium controls its occurrence in the aquatic environment, but the impact of vanadium(V) speciation on its redox properties remains largely unknown. This study developed electrochemical techniques with a rotating ring disk electrode to examine the reduction kinetics of four pH-dependent vanadium(V) species in the presence and absence of phosphate. Results showed that the reduction of VO2+, HxV4O12+x(4+x)- (V4) and HVO42- proceeded via a one-electron transfer, while the reduction of NaxHyV10O28(6-x-y)- (V10) underwent a two-electron transfer process...
September 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28899645/transcriptome-based-discovery-of-pathways-and-genes-related-to-reproduction-of-the-black-tiger-shrimp-penaeus-monodon
#17
Tanaporn Uengwetwanit, Pattareeya Ponza, Duangjai Sangsrakru, Duangdao Wichadakul, Supawadee Ingsriswang, Rungnapa Leelatanawit, Sirawut Klinbunga, Sithichoke Tangphatsornruang, Nitsara Karoonuthaisiri
The black tiger shrimp (Penaeus monodon) is an aquatic animal with considerable economic importance. Poor reproductive maturation in captivity impedes sustainable aquaculture production of this species. This study aims to provide transcriptomic information on reproductive organs using 454 pyrosequencing technology. The transcriptome analysis of ovaries and testes revealed 41,136 transcripts with 20,192 contigs. We found novel sets of transcripts completing several important reproductive pathways such as gonadotropin-releasing hormone (GnRH) signaling and progesterone-mediated oocyte maturation...
September 9, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28898861/removal-and-metabolism-of-triclosan-by-three-different-microalgal-species-in-aquatic-environment
#18
Shujuan Wang, Karen Poon, Zongwei Cai
Triclosan, an antimicrobial additive widely used in personal care products, has caused the contamination of various aquatic environment. Biodegradation was proved to play a vital role in the treatment of triclosan in wastewater. However, there is limited information about the metabolic pathway. In this study, three common freshwater microalgae including Chlorella pyrenoidosa (C. pyrenoidosa), Desmodesmus sp., and Scenedesmus obliquus (S. obliquus) were applied to remove and biodegrade triclosan in aqueous culture medium...
September 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28898702/climate-warming-and-cyanobacteria-blooms-looks-at-their-relationships-from-a-new-perspective
#19
Xingcheng Yan, Xiaoguang Xu, Mingyue Wang, Guoxiang Wang, Songjun Wu, Zhichun Li, Hao Sun, Ao Shi, Yunhao Yang
Climate warming and eutrophication are regarded as two important contributors to the occurrence of cyanobacteria blooms in aquatic ecosystems. However, the feedback of cyanobacteria blooms to climate warming and eutrophication is not fully clear. In this study, a microcosm system was established to simulate the decomposition processes of cyanobacteria blooms. It was observed that a large amount of nitrogen and phosphorus was released into the overlying water, and the concentrations of nitrogen and phosphorus were increased with the amount of added cyanobacteria bloom biomass addition...
September 6, 2017: Water Research
https://www.readbyqxmd.com/read/28892610/catalysis-and-inhibition-in-the-electrochemical-reduction-of-co2-on-platinum-in-the-presence-protonated-pyridine-new-insights-into-mechanisms-and-products
#20
Hachem Dridi, Clement Comminges, Cláudia Morais, Jean-Claude Meledje, Kouakou Boniface Kokoh, Cyrille Costentin, Jean-Michel Savéant
In the framework of modern energy challenges, the reduction of CO2 into fuels widely call to electrogenerated low-valent transition metal complexes catalystsdesigned with considerable ingenuity and sophistication. For this reason, the report that a molecule as simple as protonated pyridine (PyH+) could catalyze the formation of methanol from the reduction of CO2 on a platinum electrode triggered great interest and excitement. Further synthetic and mechanistic investigations reveal that no methanol is produced...
September 11, 2017: Journal of the American Chemical Society
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