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https://www.readbyqxmd.com/read/27925014/abundance-and-spatial-temporal-distribution-of-macrobrachium-surinamicum-holthuis-1948-palaemonidae-in-the-amazon-estuary-north-of-brazil
#1
D V Cavalcante, B S Bentes, J M Martinelli-Lemos
Macrobrachium surinamicum is a small shrimp that inhabits rivers of low salinity. It is mainly caught as bycatch in Amazon shrimp Macrobrachium amazonicum fisheries, which is widely exploited by artisanal fisheries for food and economic needs of the riverside population. This study aimed to characterize the spatial and temporal distribution of the freshwater shrimp M. surinamicum in the Guajará Bay and on Mosqueiro Island, correlating the abundance of this species with abiotic factors (temperature and salinity)...
December 1, 2016: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/27922022/fast-and-behavior-selective-exploitation-of-a-marine-fish-targeted-by-anglers
#2
Josep Alós, Miquel Palmer, Rosario Rosselló, Robert Arlinghaus
Harvesting of wild-living animals is often intensive and may selectively target heritable behavioral traits. We studied the exploitation dynamics and the vulnerability consequences of individual heterogeneity in movement-related behaviors in free-ranging pearly razorfish (Xyrichthys novacula). Using underwater-video recording, we firstly document a fast and high exploitation rate of about 60% of the adult population removed in just few days after the opening of the season. Subsequently, we tagged a sample of individuals with acoustic transmitters and studied whether behavioral traits were significant predictors of the vulnerability to angling...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921317/effects-of-economics-and-demographics-on-global-fisheries-sustainability
#3
Qi Ding, Yali Wang, Xinjun Chen, Yong Chen
A good understanding of social factors that lead to marine ecological change is important to develop sustainable global fisheries. In this study we analyzed how economic prosperity and population growth in 122 nations might ultimately affect the sustainability of their marine ecosystems during the period of 1970-2010 using a balanced panel model. We used marine Economic Exclusive Zone (EEZ) catch, mean trophic level of fishery landings (MTL), the primary production required to sustain marine catch expressed as percentage of local primary production (%PPR), and the loss in secondary production index (L index) to indicate ecological changes in marine ecosystems...
December 6, 2016: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/27920386/does-eutrophication-driven-evolution-change-aquatic-ecosystems
#4
REVIEW
Timothy J Alexander, Pascal Vonlanthen, Ole Seehausen
Eutrophication increases primary production and changes the relative abundance, taxonomic composition and spatial distribution of primary producers within an aquatic ecosystem. The changes in composition and location of resources alter the distribution and flow of energy and biomass throughout the food web. Changes in productivity also alter the physico-chemical environment, which has further effects on the biota. Such ecological changes influence the direction and strength of natural and sexual selection experienced by populations...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27918581/a-global-estimate-of-seafood-consumption-by-coastal-indigenous-peoples
#5
Andrés M Cisneros-Montemayor, Daniel Pauly, Lauren V Weatherdon, Yoshitaka Ota
Coastal Indigenous peoples rely on ocean resources and are highly vulnerable to ecosystem and economic change. Their challenges have been observed and recognized at local and regional scales, yet there are no global-scale analyses to inform international policies. We compile available data for over 1,900 coastal Indigenous communities around the world representing 27 million people across 87 countries. Based on available data at local and regional levels, we estimate a total global yearly seafood consumption of 2...
2016: PloS One
https://www.readbyqxmd.com/read/27917011/an-unprecedented-coastwide-toxic-algal-bloom-linked-to-anomalous-ocean-conditions
#6
Ryan M McCabe, Barbara M Hickey, Raphael M Kudela, Kathi A Lefebvre, Nicolaus G Adams, Brian D Bill, Frances M D Gulland, Richard E Thomson, William P Cochlan, Vera L Trainer
A coastwide bloom of the toxigenic diatom Pseudo-nitzschia in spring 2015 resulted in the largest recorded outbreak of the neurotoxin, domoic acid, along the North American west coast. Elevated toxins were measured in numerous stranded marine mammals and resulted in geographically extensive and prolonged closures of razor clam, rock crab, and Dungeness crab fisheries. We demonstrate that this outbreak was initiated by anomalously warm ocean conditions. Pseudo-nitzschia australis thrived north of its typical range in the warm, nutrient-poor water that spanned the northeast Pacific in early 2015...
October 16, 2016: Geophysical Research Letters
https://www.readbyqxmd.com/read/27916863/lipid-composition-of-oil-extracted-from-wasted-norway-lobster-nephrops-norvegicus-heads-and-comparison-with-oil-extracted-from-antarctic-krill-euphasia-superba
#7
Amaya Albalat, Lauren E Nadler, Nicholas Foo, James R Dick, Andrew J R Watts, Heather Philp, Douglas M Neil, Oscar Monroig
In the UK, the Norway lobster (Nephrops norvegicus) supports its most important shellfish fishery. Nephrops are sold either whole, or as "tails-only" for the scampi trade. In the "tailing" process, the "head" (cephalothorax) is discarded as waste. A smaller crustacean species, the Antarctic krill Euphasia superba, represents an economically valuable industry, as its extractable oil is sold as a human dietary supplement. The aim of this study was to determine the amount and composition of the oil contained in discarded Nephrops heads and to compare its composition to the oil extracted from krill...
December 1, 2016: Marine Drugs
https://www.readbyqxmd.com/read/27914929/structured-additive-distributional-regression-for-analyzing-landings-per-unit-effort-in-fisheries-research
#8
Valeria Mamouridis, Nadja Klein, Thomas Kneib, Carmen Cadarso Suarez, Francesc Maynou
We analysed the landings per unit effort (LPUE) from the Barcelona trawl fleet targeting the red shrimp (Aristeus antennatus) using novel Bayesian structured additive distributional regression to gain a better understanding of the dynamics and determinants of variation in LPUE. The data set, covering a time span of 17 years, includes fleet-dependent variables (e.g. the number of trips performed by vessels), temporal variables (inter- and intra-annual variability) and environmental variables (the North Atlantic Oscillation index)...
November 30, 2016: Mathematical Biosciences
https://www.readbyqxmd.com/read/27912771/a-dna-vaccine-encoding-the-viral-hemorrhagic-septicemia-virus-genotype-ivb-glycoprotein-confers-protection-in-muskellunge-esox-masquinongy-rainbow-trout-oncorhynchus-mykiss-brown-trout-salmo-trutta-and-lake-trout-salvelinus-namaycush
#9
Isaac F Standish, Elena V Millard, Travis O Brenden, Mohamed Faisal
BACKGROUND: The viral hemorrhagic septicemia virus (VHSV) is one of the most serious fish pathogens. In 2003, a novel sublineage (genotype IVb) of this deadly virus emerged in the Great Lakes basin causing serious fish kills. We have previously demonstrated that a DNA plasmid (pcDNA), containing a cytomegalovirus (CMV) promoter and the viral hemorrhagic septicemia virus (VHSV) genotype IVb glycoprotein (G) gene insert (designated pVHSivb-G) confers moderate protection in muskellunge (Esox masquinongy), a highly susceptible species upon challenge...
December 2, 2016: Virology Journal
https://www.readbyqxmd.com/read/27911770/the-right-incentives-enable-ocean-sustainability-successes-and-provide-hope-for-the-future
#10
Jane Lubchenco, Elizabeth B Cerny-Chipman, Jessica N Reimer, Simon A Levin
Healthy ocean ecosystems are needed to sustain people and livelihoods and to achieve the United Nations Sustainable Development Goals. Using the ocean sustainably requires overcoming many formidable challenges: overfishing, climate change, ocean acidification, and pollution. Despite gloomy forecasts, there is reason for hope. New tools, practices, and partnerships are beginning to transform local fisheries, biodiversity conservation, and marine spatial planning. The challenge is to bring them to a global scale...
December 2, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27905559/sailfish-migrations-connect-productive-coastal-areas-in-the-west-atlantic-ocean
#11
Chi Hin Lam, Benjamin Galuardi, Anthony Mendillo, Emily Chandler, Molly E Lutcavage
Isla Mujeres, Mexico is home to one of the most well-known aggregations of sailfish. Despite its fisheries prominence, little is known about this sailfish assemblage, or its relationship to other aggregation sites in the western Atlantic. In January 2012, April 2013 and 2014, we deployed 34 popup satellite archival tags on sailfish in order to study their behavior, population connectivity and biophysical interactions. Sailfish were monitored for up to one year, and displayed (1) predominantly shelf associated activity (2) occupancy of the Yucatán Current near Isla Mujeres for up to five months and (3) subsequent dispersals from the Yucatán to productive coastal areas in the Gulf of Mexico, the Caribbean Sea and along the South American coast...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905533/five-key-attributes-can-increase-marine-protected-areas-performance-for-small-scale-fisheries-management
#12
Antonio Di Franco, Pierre Thiriet, Giuseppe Di Carlo, Charalampos Dimitriadis, Patrice Francour, Nicolas L Gutiérrez, Alain Jeudy de Grissac, Drosos Koutsoubas, Marco Milazzo, María Del Mar Otero, Catherine Piante, Jeremiah Plass-Johnson, Susana Sainz-Trapaga, Luca Santarossa, Sergi Tudela, Paolo Guidetti
Marine protected areas (MPAs) have largely proven to be effective tools for conserving marine ecosystem, while socio-economic benefits generated by MPAs to fisheries are still under debate. Many MPAs embed a no-take zone, aiming to preserve natural populations and ecosystems, within a buffer zone where potentially sustainable activities are allowed. Small-scale fisheries (SSF) within buffer zones can be highly beneficial by promoting local socio-economies. However, guidelines to successfully manage SSFs within MPAs, ensuring both conservation and fisheries goals, and reaching a win-win scenario, are largely unavailable...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27902952/simple-40-k-removal-by-acidified-water-leaching-for-estimating-low-levels-of-radiocesium-in-fishery-products-following-fukushima-dai-ichi-nuclear-power-plant-accident
#13
M Inoue, S Yamashita, K Fujimoto, H Kofuji, S Miki, S Nagao
We developed a simple method for (40)K removal by acidified water leaching combined with ammonium phosphomolybdate coprecipitation, for estimating low levels of radiocesium in Japanese flounder. (40)K removal from ashed samples was approximately 98%, with the radiocesium yield of ~98%. The treatment reduced the γ-spectral baseline to ~1/5 at ground and ~3/100 at underground levels (1.04 and 0.11 cph/keV, respectively). Faint signal of (134)Cs, which is embedded in the Compton continuum of (40)K in an untreated sample, was detected...
November 15, 2016: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/27899209/with-the-noose-around-the-neck-marine-debris-entangling-otariid-species
#14
Valentina Franco-Trecu, Massimiliano Drago, Helena Katz, Emanuel Machín, Yamandú Marín
Plastic debris in marine environments and its impact on wildlife species is becoming a problem of increasing concern. In pinnipeds, entanglements commonly consist of loops around the neck of non-biodegradable materials from fishing gear or commercial packaging, known as "neck collars". These entanglements can cause injuries, death by suffocation and starvation, and therefore they may add to the overall decrease in population. Our objective was to describe the entanglement of two species of otariids (Arctocephalus australis and Otaria flavescens) in the South West Atlantic Ocean...
January 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27895363/a-systematic-review-of-epidemiological-literature-on-the-eye-health-of-marginalized-fishing-populations
#15
Khabir Ahmad, Anthony B Zwi, Daniel J M Tarantola, Bal Chand
A systematic review was conducted in December 2013 to examine the extent to which health research has been focused on the eye health issues of fishing communities. We searched multiple databases to identify relevant citations, using a combination of Medical Subject Headings (MeSH) and text words representing eye health, fishing populations and measures of disease frequency. The search yielded only 4 studies, described in 5 articles. Three studies (one each in Turkey, Egypt and Spain) provided data on self-reported eye problems in fishermen or fishery workers, with prevalence ranging from 38% to 81%...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27893775/extinction-debt-and-colonizer-credit-on-a-habitat-perturbed-fishing-bank
#16
Daniel E Duplisea, Michael G Frisk, Verena M Trenkel
Temporal changes in occupancy of the Georges Bank (NE USA) fish and invertebrate community were examined and interpreted in the context of systems ecological theory of extinction debt (EDT). EDT posits that in a closed system with a mix of competitor and colonizer species and experiencing habitat fragmentation and loss, the competitor species will show a gradual decline in fitness (occupancy) eventually leading to their extinction (extirpation) over multiple generations. A corollary of this is a colonizer credit, where colonizer species occupancy may increase with fragmentation because the disturbance gives that life history a transient relative competitive advantage...
2016: PloS One
https://www.readbyqxmd.com/read/27891170/prevalence-and-predictors-of-musculoskeletal-pain-among-danish-fishermen-results-from-a-cross-sectional-survey
#17
Gabriele Berg-Beckhoff, Helle Østergaard, Jørgen Riis Jepsen
BACKGROUND: Fishermen work in a physically challenging work environment. The aim of this analysis was to estimate the prevalence and predictors of musculoskeletal pain among Danish fishermen. METHOD: A cross-sectional survey in a random sample of Danish fishermen was done with application of the Nordic questionnaire regarding musculoskeletal pain considering lower back, shoulders, hand neck, knee, upper back elbow, hip and feet. In total, 270 fishermen participated in the study (response rate: 28%)...
2016: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/27889215/benzotriazole-type-ultraviolet-stabilizers-and-antioxidants-in-plastic-marine-debris-and-their-new-products
#18
Manviri Rani, Won Joon Shim, Gi Myung Han, Mi Jang, Young Kyoung Song, Sang Hee Hong
Ultraviolet stabilizers (UVSs) and antioxidants are the most widely used additives in plastics to enhance the lifetime of polymeric materials. There is growing interest in the roles of plastic marine debris and microplastics as source or vector of toxic substances to marine environment and organisms. However, there is limited information available on plastic associated chemicals, particularly additive chemicals. Therefore, to evaluate their extent of exposure from plastics to the marine environment, we determined UVSs and antioxidants in plastic debris (n=29) collected from beaches along with their corresponding new plastic products in markets (n=27) belonging to food, fisheries, and general use...
November 23, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27888485/rapid-in-situ-toxicity-testing-with-luminescent-bacteria-photorhabdus-luminescens-and-vibrio-fischeri-adapted-to-a-small-portable-luminometer
#19
Petr Masner, Barbora Javůrková, Luděk Bláha
The present study demonstrates development of a rapid testing protocol based on a small portable luminometer using flash kinetic assessment of bacterial bioluminescence. The laboratory comparisons based on six model organic toxicants and two metals showed significant correlations between responses of freshwater bacteria Photorhabdus luminescens and standard marine bacterial species Vibrio fisheri. While P. luminescens was less sensitive in standard arrangements, the responses of both organisms were comparable in the newly introduced portable luminometer setup...
November 26, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27886349/development-of-polymorphic-microsatellites-for-sillago-sihama-based-on-next-generation-sequencing-and-transferability-to-sillago-japonica
#20
R X Wu, H R Zhang, S F Niu, Y Zhai, X F Liu
Sillago sihama (Forsskål, 1775), a commercially important marine fishery species in the Indo-West Pacific, is being developed as a target species for aquaculture and stock enhancement in China. However, due to the limitations of traditional isolation methods, the available microsatellite loci, or simple sequence repeats (SSRs), of S. sihama lack diversity. We used a stepwise approach including Illumina sequencing, primer screening, and SSR marker validation to develop diverse SSRs for S. sihama. A total of 853...
November 21, 2016: Genetics and Molecular Research: GMR
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