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https://www.readbyqxmd.com/read/28432910/total-mercury-levels-in-hair-of-children-aged-7years-before-and-after-the-great-east-japan-earthquake
#1
Nozomi Tatsuta, Kunihiko Nakai, Miyuki Iwai-Shimada, Tomoe Suzuki, Hiroshi Satoh, Katsuyuki Murata
The Great East Japan Earthquake on March 11, 2011 caused severe damage to the Sanriku coastal area, where we have been conducting a birth cohort study. The disaster occurred in the middle of 7-year-old examination. The mother-child pairs who participated in our study were compulsorily divided into two groups: the examination was finished for 157 children before the disaster, and for 335 after the disaster. We examined whether the disaster affected total mercury (THg) levels of the cohort, as well as a relationship between the THg levels at birth and at present...
April 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28431803/reutilization-of-discarded-biomass-for-preparing-functional-polymer-materials
#2
REVIEW
Jianfeng Wang, Wenzhen Qian, Yufeng He, Yubing Xiong, Pengfei Song, Rong-Min Wang
Biomass is abundant and recyclable on the earth, which has been assigned numerous roles to human beings. However, over the past decades, accompanying with the rapid expansion of man-made materials, such as alloy, plastic, synthetic rubber and fiber, a great number of natural materials had been neglected and abandoned, such as straw, which cause a waste of resource and environmental pollution. In this review, based on introducing sources of discarded biomass, the main composition and polymer chains in discarded biomass materials, the traditional treatment and novel approach for reutilization of discarded biomass were summarized...
April 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28428874/population-assessment-using-multivariate-time-series-analysis-a-case-study-of-rockfishes-in-puget-sound
#3
Nick Tolimieri, Elizabeth E Holmes, Gregory D Williams, Robert Pacunski, Dayv Lowry
Estimating a population's growth rate and year-to-year variance is a key component of population viability analysis (PVA). However, standard PVA methods require time series of counts obtained using consistent survey methods over many years. In addition, it can be difficult to separate observation and process variance, which is critical for PVA. Time-series analysis performed with multivariate autoregressive state-space (MARSS) models is a flexible statistical framework that allows one to address many of these limitations...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28424314/muscle-biochemistry-of-a-pelagic-delphinid-stenella-longirostris-longirostris-insight-into-fishery-induced-separation-of-mothers-and-calves
#4
Shawn R Noren, Kristi West
The length of time required for postnatal maturation of the locomotor muscle (longissimus dorsi) biochemistry [myoglobin (Mb) content and buffering capacity] in marine mammals typically varies with nursing duration, but it can be accelerated by species-specific behavioral demands, such as deep-diving and sub-ice transit. We examined how the swimming demands of a pelagic lifestyle influence postnatal maturation of Mb and buffering capacity in spinner dolphins (Stenella longirostris longirostris). Mb content of newborn (1...
April 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28421527/spatio-temporal-assessment-and-trend-analysis-of-surface-water-salinity-in-the-coastal-region-of-bangladesh
#5
Mashura Shammi, Md Mostafizur Rahman, Md Atikul Islam, Md Bodrud-Doza, Anwar Zahid, Yeasmin Akter, Samia Quaiyum, Masaaki Kurasaki
The study was designed to collect water samples over two seasons-wet-monsoon season (n = 96) (March-April) and dry-monsoon season (n = 44) (September-October)-to understand the seasonal variation in anion and cation hydrochemistry of the coastal rivers and estuaries contributing in the spatial trend in salinity. Hydrochemical examination of wet-monsoon season primarily revealed Ca-Mg-HCO3 type (66%) and followed by Na-Cl type (17.70%) water. In the dry-monsoon season, the scenario reversed with primary water being Na-Cl type (52...
April 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28416118/a-magnetic-map-leads-juvenile-european-eels-to-the-gulf-stream
#6
Lewis C Naisbett-Jones, Nathan F Putman, Jessica F Stephenson, Sam Ladak, Kyle A Young
Migration allows animals to track the environmental conditions that maximize growth, survival, and reproduction [1-3]. Improved understanding of the mechanisms underlying migrations allows for improved management of species and ecosystems [1-4]. For centuries, the catadromous European eel (Anguilla anguilla) has provided one of Europe's most important fisheries and has sparked considerable scientific inquiry, most recently owing to the dramatic collapse of juvenile recruitment [5]. Larval eels are transported by ocean currents associated with the Gulf Stream System from Sargasso Sea breeding grounds to coastal and freshwater habitats from North Africa to Scandinavia [6, 7]...
April 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28407022/gap-analysis-on-the-biology-of-mediterranean-marine-fishes
#7
Donna Dimarchopoulou, Konstantinos I Stergiou, Athanassios C Tsikliras
We estimated the current level of knowledge concerning several biological characteristics of the Mediterranean marine fishes by carrying out a gap analysis based on information extracted from the literature, aiming to identify research trends and future needs in the field of Mediterranean fish biology that can be used in stock assessments, ecosystem modeling and fisheries management. Based on the datasets that emerged from the literature review, there is no information on any biological characteristic for 43% (n = 310) of the Mediterranean fish species, whereas for an additional 15% (n = 109) of them there is information about just one characteristic...
2017: PloS One
https://www.readbyqxmd.com/read/28406963/historical-and-ecological-drivers-of-the-spatial-pattern-of-chondrichthyes-species-richness-in-the-mediterranean-sea
#8
María José Meléndez, José Carlos Báez, José Miguel Serna-Quintero, Juan Antonio Camiñas, Ignacio de Loyola Fernández, Raimundo Real, David Macías
Chondrichthyes, which include Elasmobranchii (sharks and batoids) and Holocephali (chimaeras), are a relatively small group in the Mediterranean Sea (89 species) playing a key role in the ecosystems where they are found. At present, many species of this group are threatened as a result of anthropogenic effects, including fishing activity. Knowledge of the spatial distribution of these species is of great importance to understand their ecological role and for the efficient management of their populations, particularly if affected by fisheries...
2017: PloS One
https://www.readbyqxmd.com/read/28406935/micro-level-explanations-for-emergent-patterns-of-self-governance-arrangements-in-small-scale-fisheries-a-modeling-approach
#9
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
#10
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/28403534/the-consistency-of-a-species-response-to-press-perturbations-with-high-food-web-uncertainty
#11
Tyler D Tunney, Stephen R Carpenter, M Jake Vander Zanden
Predicting species responses to perturbations is a fundamental challenge in ecology. Decision makers must often identify management perturbations that are the most likely to deliver a desirable management outcome despite incomplete information on the pattern and strength of food web links. Motivated by a current fishery decline in inland lakes of the Midwestern United States, we evaluate consistency of the responses of a target species (walleye (Sander vitreus)) to press perturbations. We represented food web uncertainty with 196 plausible topological models and applied four perturbations to each one...
April 12, 2017: Ecology
https://www.readbyqxmd.com/read/28403149/a-protocol-for-identifying-suitable-biomarkers-to-assess-fish-health-a-systematic-review
#12
Frederieke Kroon, Claire Streten, Simon Harries
BACKGROUND: Biomarkers have been used extensively to provide the connection between external levels of contaminant exposure, internal levels of tissue contamination, and early adverse effects in organisms. OBJECTIVES: To present a three-step protocol for identifying suitable biomarkers to assess fish health in coastal and marine ecosystems, using Gladstone Harbour (Australia) as a case study. METHODS: Prior to applying our protocol, clear working definitions for biomarkers were developed to ensure consistency with the global literature on fish health assessment...
2017: PloS One
https://www.readbyqxmd.com/read/28401959/prenatal-stress-from-trawl-capture-affects-mothers-and-neonates-a-case-study-using-the-southern-fiddler-ray-trygonorrhina-dumerilii
#13
L Guida, C Awruch, T I Walker, R D Reina
Assessing fishing effects on chondrichthyan populations has predominantly focused on quantifying mortality rates. Consequently, sub-lethal effects of capture stress on the reproductive capacity of chondrichthyans are largely unknown. We investigated the reproductive consequences of capture on pregnant southern fiddler rays (Trygonorrhina dumerilii) collected from Swan Bay, Australia, in response to laboratory-simulated trawl capture (8 h) followed immediately by air exposure (30 min). Immediately prior to, and for up to 28 days post trawling, all females were measured for body mass (BM), sex steroid concentrations (17-β estradiol, progesterone, testosterone) and granulocyte to lymphocyte (G:L) ratio...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28398351/a-database-of-global-marine-commercial-small-scale-illegal-and-unreported-fisheries-catch-1950-2014
#14
Reg A Watson
Global fisheries landings data from a range of public sources was harmonised and mapped to 30-min spatial cells based on the distribution of the reported taxa and the fishing fleets involved. This data was extended to include the associated fishing gear used, as well as estimates of illegal, unregulated and unreported catch (IUU) and discards at sea. Expressed as catch rates, these results also separated small-scale fisheries from other fishing operations. The dataset covers 1950 to 2014 inclusive. Mapped catch allows study of the impacts of fisheries on habitats and fauna, on overlap with the diets of marine birds and mammals, and on the related use of fuels and release of greenhouse gases...
April 11, 2017: Scientific Data
https://www.readbyqxmd.com/read/28396585/phase-heterogeneity-in-carbonate-production-by-marine-fish-influences-their-roles-in-sediment-generation-and-the-inorganic-carbon-cycle
#15
Michael A Salter, Alastair R Harborne, Chris T Perry, Rod W Wilson
Marine teleost fish are important carbonate producers in neritic and oceanic settings. However, the fates of the diverse carbonate phases (i.e., mineral and amorphous forms of CaCO3) they produce, and their roles in sediment production and marine inorganic carbon cycling, remain poorly understood. Here we quantify the carbonate phases produced by 22 Bahamian fish species and integrate these data with regional fish biomass data from The Bahamas to generate a novel platform-scale production model that resolves these phases...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28394278/vitamin-d-deficiency-among-adults-with-history-of-pulmonary-tuberculosis-in-korea-based-on-a-nationwide-survey
#16
Mi Hyun Joo, Mi Ah Han, Sun Mi Park, Hwan Ho Shin
We investigated the prevalence of vitamin D deficiency among individuals who have a history of tuberculosis (TB) diagnosis in Korea. Using the 5th Korean National Health and Nutrition Examination Survey, we selected 805 individuals with a history of TB diagnosis and 16,049 controls without a history of TB. Vitamin D deficiency was defined as a 25(OH)D level less than 20 ng/mL. Vitamin D deficiency was revealed in 71.7% of the individuals with a history of TB diagnosis and in 72.1% of the controls. Vitamin D deficiency was more likely in women than in men, in people who engaged in other jobs or were unemployed than in people who engaged in skilled agricultural, forestry, and fishery jobs, and in people who walked 3-5 days per week than in people who walked 6-7 days per week...
April 10, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28386433/historical-gene-flow-constraints-in-a-northeastern-atlantic-fish-phylogeography-of-the-ballan-wrasse-labrus-bergylta-across-its-distribution-range
#17
Frederico Almada, Sara M Francisco, Cristina S Lima, Richard FitzGerald, Luca Mirimin, David Villegas-Ríos, Fran Saborido-Rey, Pedro Afonso, Telmo Morato, Sérgio Bexiga, Joana I Robalo
The distribution and demographic patterns of marine organisms in the north Atlantic were largely shaped by climatic changes during the Pleistocene, when recurrent glacial maxima forced them to move south or to survive in northern peri-glacial refugia. These patterns were also influenced by biological and ecological factors intrinsic to each species, namely their dispersion ability. The ballan wrasse (Labrus bergylta), the largest labrid fish along Europe's continental margins, is a target for fisheries and aquaculture industry...
February 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28385512/toxic-heavy-metals-in-commercially-important-food-fishes-collected-from-palk-bay-southeastern-india
#18
Abimannan Arulkumar, Sadayan Paramasivam, Rajendran Rajaram
Toxic heavy metals are an important group of emerging chemical contaminants in seafood. Heavy metal concentrations in commercially important and most commonly eaten 10 fish species from Thondi fish landing, southeast coast of India, were determined by atomic absorption spectrometry. The concentrations of heavy metals significantly varied within and between the investigated fish species (P<0.05). The results of this study showed best significant correlations among the toxic heavy metals in the fish samples...
April 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28385456/real-time-pcr-assay-for-aquimarina-macrocephali-subsp-homaria-and-its-distribution-in-shell-disease-lesions-of-homarus-americanus-milne-edwards-1837-and-environmental-samples
#19
Robert A Quinn, Suchandra Hazra, Roxanna Smolowitz, Andrei Y Chistoserdov
Epizootic shell disease (ESD) is causing major losses to the lobster fishery in southern New England. Potential pathogens have been identified in lesion communities, but there are currently no efficient means of detecting and quantifying their presence. A qPCR assay was developed for a key potential pathogen, Aquimarina macrocephali subsp. homaria found to be ubiquitous in ESD lesions but not the unaffected integument. Application of the assay to various samples demonstrated that A. macrocephali subsp. homaria is ubiquitous and abundant in lobster lesions, commonly associated with healthy surfaces of crabs and is scarce in water and sediment samples from southern New England suggesting the affinity of this microorganism to the Arthropod integument...
April 3, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28385079/sulfated-galactans-from-red-seaweed-gracilaria-fisheri-target-egfr-and-inhibit-cholangiocarcinoma-cell-proliferation
#20
Thannicha Sae-Lao, Rutaiwan Tohtong, David O Bates, Kanokpan Wongprasert
Cholangiocarcinoma (CCA) is increasing in incidence worldwide and is resistant to chemotherapeutic agents, making treatment of CCA a major challenge. Previous studies reported that natural sulfated polysaccharides (SPs) disrupted growth factor receptor activation in cancer cells. The present study, therefore, aimed at investigating the antiproliferation effect of sulfated galactans (SG) isolated from the red seaweed Gracilaria fisheri (G. fisheri) on CCA cell lines. Direct binding activity of SG to CCA cells, epidermal growth factor (EGF) and epidermal growth factor receptor (EGFR) were determined...
April 6, 2017: American Journal of Chinese Medicine
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