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https://www.readbyqxmd.com/read/28223237/consumer-preferences-for-sustainable-aquaculture-products-evidence-from-in-depth-interviews-think-aloud-protocols-and-choice-experiments
#1
Antje Risius, Meike Janssen, Ulrich Hamm
Fish from aquaculture is becoming more important for human consumption. Sustainable aquaculture procedures were developed as an alternative to overcome the negative environmental impacts of conventional aquaculture procedures and wild fisheries. The objective of this contribution is to determine what consumers expect from sustainable aquaculture and whether they prefer sustainable aquaculture products. A combination of qualitative research methods, with think aloud protocols and in-depth interviews, as well as quantitative methods, using choice experiments and face-to-face interviews, was applied...
February 18, 2017: Appetite
https://www.readbyqxmd.com/read/28222862/commercially-important-species-associated-with-horse-mussel-modiolus-modiolus-biogenic-reefs-a-priority-habitat-for-nature-conservation-and-fisheries-benefits
#2
Flora E A Kent, James M Mair, Jason Newton, Charles Lindenbaum, Joanne S Porter, William G Sanderson
Horse mussel reefs (Modiolus modiolus) are biodiversity hotspots afforded protection by Marine Protected Areas (MPAs) in the NE Atlantic. In this study, horse mussel reefs, cobble habitats and sandy habitats were assessed using underwater visual census and drop-down video techniques in three UK regions. Megafauna were enumerated, differences in community composition and individual species abundances were analysed. Samples of conspicuous megafauna were also collected from horse mussel reefs in Orkney for stable isotope analysis...
February 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28222151/bayesian-stock-assessment-of-pacific-herring-in-prince-william-sound-alaska
#3
Melissa L Muradian, Trevor A Branch, Steven D Moffitt, Peter-John F Hulson
The Pacific herring (Clupea pallasii) population in Prince William Sound, Alaska crashed in 1993 and has yet to recover, affecting food web dynamics in the Sound and impacting Alaskan communities. To help researchers design and implement the most effective monitoring, management, and recovery programs, a Bayesian assessment of Prince William Sound herring was developed by reformulating the current model used by the Alaska Department of Fish and Game. The Bayesian model estimated pre-fishery spawning biomass of herring age-3 and older in 2013 to be a median of 19,410 mt (95% credibility interval 12,150-31,740 mt), with a 54% probability that biomass in 2013 was below the management limit used to regulate fisheries in Prince William Sound...
2017: PloS One
https://www.readbyqxmd.com/read/28221708/improved-management-of-small-pelagic-fisheries-through-seasonal-climate-prediction
#4
Désirée Tommasi, Charles A Stock, Kathleen Pegion, Gabriel A Vecchi, Richard D Methot, Michael A Alexander, David M Checkley
Populations of small pelagic fish are strongly influenced by climate. The inability of managers to anticipate environment-driven fluctuations in stock productivity or distribution can lead to overfishing and stock collapses, inflexible management regulations inducing shifts in the functional response to human predators, lost opportunities to harvest populations, bankruptcies in the fishing industry, and loss of resilience in the human food supply. Recent advances in dynamical global climate prediction systems allow for sea surface temperature (SST) anomaly predictions at a seasonal scale over many shelf ecosystems...
October 12, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28217894/feeding-dynamics-consumption-rates-and-daily-ration-of-wahoo-acanthocybium-solandri-in-indo-pacific-waters
#5
J N Perelman, K N Schmidt, I Haro, I R Tibbetts, M T Zischke
This study reports the diet composition of 363 wahoo Acanthocybium solandri captured from the Indo-Pacific. The study also provides the first estimates of consumption and daily ration for the species worldwide, which are important parameters for ecosystem models and may improve ecosystem-based fisheries management. Thirty-four prey taxa were identified from A. solandri stomachs with Scombridae having the highest relative importance. Actinopterygii comprised 96% of the total prey wet mass, of which 29% were epipelagic fishes, with 22% alone from Scombridae...
February 19, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28215324/bacillus-probiotic-enzymes-external-auxiliary-apparatus-to-avoid-digestive-deficiencies-water-pollution-diseases-and-economic-problems-in-marine-cultivated-animals
#6
Jorge Olmos Soto
Exploitation of marine fishes is the main source of several life-supporting feed compounds such as proteins, lipids, and carbohydrates that maintain the production of most trading marine organisms by aquaculture. However, at this rate the marine inventory will go to the end soon, since fishery resources are finite. In this sense, the availability of the principal ingredients obtained from marine fishes is going to decrease considerably, increasing the diet prices and affecting the economy of this activity. Therefore, aquaculture industry needs to find nonexpensive land unconventional resources of protein, carbohydrates, and lipids and use bacterial probiotics to improve digestion-assimilation of these unfamiliar compounds...
2017: Advances in Food and Nutrition Research
https://www.readbyqxmd.com/read/28214918/first-record-of-three-african-trichodinids-ciliophora-peritrichida-in-cultured-nile-tilapia-oreochromis-niloticus-in-saudi-arabia-with-re-evaluation-of-their-host-specificity
#7
Abdel-Azeem Sh Abdel-Baki, Ali Al Ghamdi, Saleh Al-Quraishy
Saudi Arabia has a developing aquaculture industry that farms primarily tilapia. Although trichodinids are presumably the most usually encountered protozoan parasites in these cultured fish, they have rarely been studied in this context, and there is no data on the species that might infect cultured tilapia in Saudi Arabia. The present study was therefore carried out as a general survey to investigate the occurrence and identify the species of trichodinids that can infect cultured tilapia (Oreochromis niloticus) in Saudi Arabia...
February 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28212462/climate-change-contaminant-interactions-in-marine-food-webs-towards-a-conceptual-framework
#8
Juan José Alava, William W L Cheung, Peter S Ross, Rashid U Sumaila
Climate change is reshaping the way in which contaminants move through the global environment, in large part by changing the chemistry of the oceans and affecting the physiology, health and feeding ecology of marine biota. Climate change-associated impacts on structure and function of marine food webs, with consequent changes in contaminant transport, fate and effects, is likely to have significant repercussions to those human populations that rely on fisheries resources for food, recreation or culture. Published studies on climate change-contaminant interactions with a focus on food web bioaccumulation were systematically reviewed to explore how climate change and ocean acidification may impact contaminant levels in marine food webs...
February 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28207832/towards-sustainable-fishery-management-for-skates-in-south-america-the-genetic-population-structure-of-zearaja-chilensis-and-dipturus-trachyderma-chondrichthyes-rajiformes-in-the-south-east-pacific-ocean
#9
Carolina Vargas-Caro, Carlos Bustamante, Michael B Bennett, Jennifer R Ovenden
The longnose skates (Zearaja chilensis and Dipturus trachyderma) are the main component of the elasmobranch fisheries in the south-east Pacific Ocean. Both species are considered to be a single stock by the fishery management in Chile however, little is known about the level of demographic connectivity within the fishery. In this study, we used a genetic variation (560 bp of the control region of the mitochondrial genome and ten microsatellite loci) to explore population connectivity at five locations along the Chilean coast...
2017: PloS One
https://www.readbyqxmd.com/read/28207172/drivers-of-redistribution-of-fishing-and-non-fishing-effort-after-the-implementation-of-a-marine-protected-area-network
#10
Reniel B Cabral, Steven D Gaines, Brett A Johnson, Tom W Bell, Crow White
Marine spatial planning (MSP) is increasingly utilized to sustainably manage ocean uses. Marine protected areas (MPAs), a form of spatial management in which parts of the ocean are regulated to fishing, are now a common tool in MSP for conserving marine biodiversity and managing fisheries. However, the use of MPAs in MSP often neglects, or simplifies, the redistribution of fishing and non-fishing activities inside and outside of MPAs following their implementation. This redistribution of effort can have important implications for effective MSP...
October 3, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28202958/decline-in-global-oceanic-oxygen-content-during-the-past-five-decades
#11
Sunke Schmidtko, Lothar Stramma, Martin Visbeck
Ocean models predict a decline in the dissolved oxygen inventory of the global ocean of one to seven per cent by the year 2100, caused by a combination of a warming-induced decline in oxygen solubility and reduced ventilation of the deep ocean. It is thought that such a decline in the oceanic oxygen content could affect ocean nutrient cycles and the marine habitat, with potentially detrimental consequences for fisheries and coastal economies. Regional observational data indicate a continuous decrease in oceanic dissolved oxygen concentrations in most regions of the global ocean, with an increase reported in a few limited areas, varying by study...
February 15, 2017: Nature
https://www.readbyqxmd.com/read/28199344/stock-assessment-and-end-to-end-ecosystem-models-alter-dynamics-of-fisheries-data
#12
Laura S Storch, Sarah M Glaser, Hao Ye, Andrew A Rosenberg
Although all models are simplified approximations of reality, they remain useful tools for understanding, predicting, and managing populations and ecosystems. However, a model's utility is contingent on its suitability for a given task. Here, we examine two model types: single-species fishery stock assessment and multispecies marine ecosystem models. Both are efforts to predict trajectories of populations and ecosystems to inform fisheries management and conceptual understanding. However, many of these ecosystems exhibit nonlinear dynamics, which may not be represented in the models...
2017: PloS One
https://www.readbyqxmd.com/read/28196150/a-statistical-model-for-monitoring-shell-disease-in-inshore-lobster-fisheries-a-case-study-in-long-island-sound
#13
Kisei R Tanaka, Samuel L Belknap, Jared J Homola, Yong Chen
The expansion of shell disease is an emerging threat to the inshore lobster fisheries in the northeastern United States. The development of models to improve the efficiency and precision of existing monitoring programs is advocated as an important step in mitigating its harmful effects. The objective of this study is to construct a statistical model that could enhance the existing monitoring effort through (1) identification of potential disease-associated abiotic and biotic factors, and (2) estimation of spatial variation in disease prevalence in the lobster fishery...
2017: PloS One
https://www.readbyqxmd.com/read/28194312/will-you-swim-into-my-parlour-in-situ-observations-of-atlantic-cod-gadus-morhua-interactions-with-baited-pots-with-implications-for-gear-design
#14
Phillip Meintzer, Philip Walsh, Brett Favaro
Pots (also known as traps) are baited fishing gears widely used in commercial fisheries, and are being considered as a tool for harvesting Atlantic cod (Gadus morhua) in Newfoundland and Labrador, Canada. Pots produce lower environmental impacts than many other fishing gears, but they will only be a viable fishing strategy if they are efficient and selective at catching their target species. To study the behaviour of cod in and around pots, and how those behaviours affect pot efficiency, we used long-duration underwater video cameras to assess two models of cod pot deployed in the nearshore waters of Fogo Island, NL...
2017: PeerJ
https://www.readbyqxmd.com/read/28193187/effect-modification-of-social-context-changes-on-mental-disability-in-china-from-1987-to-2006-a-multi-level-study-of-1-9-million-people
#15
Zhenjie Wang, Lihua Pang, Ning Li, Chao Guo, Gong Chen, Xiaoying Zheng
BACKGROUND: Very little literature has explored how mental disability in China is connected with inequalities in social and environmental contexts. In the study described herein, we determine whether social-context inequalities were associated with mental disability in China from 1987 to 2006. METHODS: Data were derived from national representative population-based data from the 1987 and 2006 China National Sample Survey on Disability. Both surveys used multistage, stratified random cluster sampling, with a probability proportionate to size, to derive nationally representative samples...
February 13, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28192739/on-international-fisheries-agreements-entry-deterrence-and-ecological-uncertainty
#16
Hans Ellefsen, Lone Grønbæk, Lars Ravn-Jonsen
A prerequisite for an international fisheries agreement (IFA) to be stable is that parties expect the benefits from joining the agreement to exceed the benefits from free riding on the agreement, and parties only comply with the agreement as long as this is true. The agreement, therefore, implicitly builds on an expectation of the ecological condition of the natural resource. Game theoretical models often assume that all parties have the same (often perfect) information about the resource and that the exploitation is an equilibrium use of the stock...
February 10, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28192178/identification-and-characterization-of-the-expression-profile-of-the-micrornas-in-the-amazon-species-colossoma-macropomum-by-next-generation-sequencing
#17
Fátima Gomes, Luciana Watanabe, Sérgio Nozawa, Layanna Oliveira, Jedson Cardoso, João Vianez, Márcio Nunes, Horacio Schneider, Iracilda Sampaio
Colossoma macropomum is a resistant species native of Amazonas and Orinoco river basins. It is regarded as the second largest finfish of Solimões and Amazon rivers, representing a major fishery resource in Amazonas and an important species in tropical aquaculture. MicroRNAs are non-coding endogenous riboregulators of nearly 22 nucleotides that play a key role in post-transcriptional gene regulation of several organisms. We analyzed samples of liver and skin from specimens of C. macropomum using next generation sequencing...
February 10, 2017: Genomics
https://www.readbyqxmd.com/read/28190725/metapopulation-tracking-juvenile-penguins-reveals-an-ecosystem-wide-ecological-trap
#18
Richard B Sherley, Katrin Ludynia, Bruce M Dyer, Tarron Lamont, Azwianewi B Makhado, Jean-Paul Roux, Kylie L Scales, Les G Underhill, Stephen C Votier
Climate change and fisheries are transforming the oceans, but we lack a complete understanding of their ecological impact [1-3]. Environmental degradation can cause maladaptive habitat selection, inducing ecological traps with profound consequences for biodiversity [4-6]. However, whether ecological traps operate in marine systems is unclear [7]. Large marine vertebrates may be vulnerable to ecological traps [6], but their broad-scale movements and complex life histories obscure the population-level consequences of habitat selection [8, 9]...
February 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28182746/selection-and-evaluation-of-new-reference-genes-for-rt-qpcr-analysis-in-epinephelus-akaara-based-on-transcriptome-data
#19
Huan Wang, Xiang Zhang, Qiaohong Liu, Xiaochun Liu, Shaoxiong Ding
Groupers are an economically important fish species in world fishery markets. Because many studies using RT-qPCR have addressed gene expression in groupers, appropriate reference genes are required to obtain reliable and accurate results. In this study, the most suitable reference genes were identified from eleven candidate genes of one of the most valuable species, Epinephelus akaara, in a range of different experimental conditions. Using the software packages geNorm, NormFinder, BestKeeper and refFinder, three traditionally used reference genes, β-actin (β-ACT), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and beta-2-microglobulin (B2M), were identified as not suitable for E...
2017: PloS One
https://www.readbyqxmd.com/read/28179569/getting-to-the-bottom-of-global-fishery-catches
#20
Éva Elizabeth Plagányi
No abstract text is available yet for this article.
February 8, 2017: Proceedings of the National Academy of Sciences of the United States of America
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