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Robert Blasiak, Jessica Spijkers, Kanae Tokunaga, Jeremy Pittman, Nobuyuki Yagi, Henrik Österblom
Future impacts of climate change on marine fisheries have the potential to negatively influence a wide range of socio-economic factors, including food security, livelihoods and public health, and even to reshape development trajectories and spark transboundary conflict. Yet there is considerable variability in the vulnerability of countries around the world to these effects. We calculate a vulnerability index of 147 countries by drawing on the most recent data related to the impacts of climate change on marine fisheries...
2017: PloS One
Maggie N Chan, Anne H Beaudreau, Philip A Loring
Understanding the impacts of recreational fishing on habitats and species, as well as the social and ecological importance of place to anglers, requires information on the spatial distribution of fishing activities. This study documented long-term changes in core fishing areas of a major recreational fishery in Alaska and identified biological, regulatory, social, and economic drivers of spatial fishing patterns by charter operators. Using participatory mapping and in-person interviews, we characterized the spatial footprint of 46 charter operators in the communities of Sitka and Homer since the 1990s...
2017: PloS One
Marie Fujitani, Andrew McFall, Christoph Randler, Robert Arlinghaus
Resolving uncertainties in managed social-ecological systems requires adaptive experimentation at whole-ecosystem levels. However, whether participatory adaptive management fosters ecological understanding among stakeholders beyond the sphere of science is unknown. We experimentally involved members of German angling clubs (n = 181 in workshops, n = 2483 in total) engaged in self-governance of freshwater fisheries resources in a large-scale ecological experiment of active adaptive management of fish stocking, which constitutes a controversial management practice for biodiversity and ecosystem functioning when conducted inappropriately...
June 2017: Science Advances
Carla Zannella, Francesco Mosca, Francesca Mariani, Gianluigi Franci, Veronica Folliero, Marilena Galdiero, Pietro Giorgio Tiscar, Massimiliano Galdiero
A variety of bivalve mollusks (phylum Mollusca, class Bivalvia) constitute a prominent commodity in fisheries and aquacultures, but are also crucial in order to preserve our ecosystem's complexity and function. Bivalve mollusks, such as clams, mussels, oysters and scallops, are relevant bred species, and their global farming maintains a high incremental annual growth rate, representing a considerable proportion of the overall fishery activities. Bivalve mollusks are filter feeders; therefore by filtering a great quantity of water, they may bioaccumulate in their tissues a high number of microorganisms that can be considered infectious for humans and higher vertebrates...
June 17, 2017: Marine Drugs
Andrew S Watson, George T Merovich, J Todd Petty, J Brady Gutta
Assessments of watershed-based restoration efforts are rare but are essential for the science of stream restoration to advance. We conducted a watershed scale assessment of Abram Creek before and after implementation of a watershed-based plan designed to maximize ecological recovery from acid mine drainage (AMD) impairment. We surveyed water chemistry, physical habitat, benthic macroinvertebrates, and fish community structure in three stream types: AMD-impacted (14 streams), AMD-treated (13 streams), and unimpaired reference (4 streams)...
July 2017: Environmental Monitoring and Assessment
Francesca C Forrestal, M Danielle McDonald, Georgianna Burress, David J Die
Yellowtail snapper (Ocyurus chrysurus) is an important part of the reef fish assemblage in the western, tropical Atlantic and is caught by both recreational and commercial fisheries in south Florida and the Bahamas. It is estimated that 80% of snapper caught within southeastern Florida waters are discarded due to minimum size restrictions. Neglecting to include information on delayed mortality of undersized fish has the potential for fishery managers to overestimate the abundance of smaller size classes and introduce bias into stock assessments...
2017: Conservation Physiology
Juan Diego Gaitán-Espitia, Daniela Gómez, Alistair J Hobday, Ross Daley, Julio Lamilla, Leyla Cárdenas
Potential interactions between marine predators and humans arise in the southern coast of Chile where predator feeding and reproduction sites overlap with fisheries and aquaculture. Here, we assess the potential effects of intensive salmon aquaculture on food habits, growth, and reproduction of a common predator, the spiny dogfish-identified as Squalus acanthias via genetic barcoding. A total of 102 (89 females and 13 males) individuals were collected during winter and summer of 2013-2014 from the Chiloé Sea where salmon aquaculture activities are concentrated...
June 2017: Ecology and Evolution
Thomas L King, Brian Robinson, Fangda Cui, Michel Boufadel, Kenneth Lee, Jason A C Clyburne
Canada's production, transport, and sale of diluted bitumen (dilbit) products are expected to increase by a million barrels per day over the next decade. The anticipated growth in oil production and transport increases the risk of oil spills in aquatic areas and places greater demands on oil spill capabilities to respond to spills, which have raised stakeholder concerns. Current oil spill models only predict the transport of bitumen blends that are used in contingency plans and oil spill response strategies, rather than changes in the oil's physical properties that are relevant to spill response...
June 14, 2017: Environmental Science. Processes & Impacts
Marco Endruweit
River loaches of the genus Schistura McClelland 1838 are small, elongated, benthic fishes of the family Nemacheilidae. Species in the genus are part of a subsistence fishery in several Southeast Asian countries due to their tasty flesh and relative abundance in suitable habitats. Fluvial environments with gravelly bottoms in tropical and subtropical regions can be co-inhabited by several species of nemacheilid loaches. Kottelat (1990) reported up to six different species coexisting in Indochinese streams in some instances...
March 15, 2017: Zootaxa
Michael C Melnychuk, Ray Hilborn, Matthew Elliott, Emily Peterson, Rosemary J Hurst, Pamela M Mace, Paul J Starr
No abstract text is available yet for this article.
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
Alessandra Ludovisi, Gabriella Di Felice, Noelia Carballeda-Sangiao, Bianca Barletta, Cinzia Butteroni, Silvia Corinti, Gianluca Marucci, Miguel González-Muñoz, Edoardo Pozio, Maria Angeles Gómez-Morales
BACKGROUND: Anisakis simplex is the only fishery-product associated parasite causing clinical allergic responses in humans so far. However, other anisakids, due to the presence of shared or own allergens, could also lead to allergic reactions after sensitization. The aim of this study was to determine if Pseudoterranova decipiens belonging to the family Anisakidae has allergenic activity and is able to induce sensitization after oral administration in a murine (BALB/c mice) model. RESULTS: The ingestion of A...
June 12, 2017: Parasites & Vectors
E M Ann Rees, V Ronni Edmonds-Brown, M Fasihul Alam, Ros M Wright, J Robert Britton, Gareth D Davies, Ian G Cowx
Information about the socioeconomic drivers of Silurus glanis anglers in the UK were collected using questionnaires from a cross section of mixed cyprinid fisheries to elucidate human dimensions in angling and non-native fisheries management. Respondents were predominantly male (95%), 30-40 years of age with <10 yr angling experience for S. glanis; most had received college rather than university education. The majority (34%) were employed with low-moderate income status (<£30k per annum), which may restrict time and expenditure spent on angling...
2017: PloS One
Joshua S Stoll, Emma Fuller, Beatrice I Crona
Fishers worldwide operate in an environment of uncertainty and constant change. Their ability to manage risk associated with such uncertainty and subsequently adapt to change is largely a function of individual circumstances, including their access to different fisheries. However, explicit attention to the heterogeneity of fishers' connections to fisheries at the level of the individual has been largely ignored. We illustrate the ubiquitous nature of these connections by constructing a typology of commercial fishers in the state of Maine based on the different fisheries that fishers rely on to sustain their livelihoods and find that there are over 600 combinations...
2017: PloS One
Noel Vella, Adriana Vella
Hexanchus griseus is a globally distributed deep-water shark species. It inhabits tropical and temperate waters throughout the world, including the Mediterranean Sea where it is by-caught by small-scale fisheries in the region. In this study, we analysed the genetic variation of H. griseus specimens collected from different areas within and outside the Mediterranean region, to assess its genetic connectivity. The mitochondrial DNA (mtDNA) sequence analysed in this study ranged from cytochrome b to 16S rRNA genes including the control region, the 12S rRNA gene and the interspersed tRNA genes in the region, covering a total of 3731 to 3914 nucleotides...
June 8, 2017: Marine Genomics
Tae-Goun Kim, James Opaluch, Daniel Seong-Hyeok Moon, Daniel R Petrolia
Sixteen oil spills occurred in Korea between 1995 and 2010, including the Hebei Spirit oil spill (HSOS) in 2007, the largest (77,857 barrels) in Korean history. Yet compensation for environmental damages has never been claimed under the International Oil Pollution Compensation Fund for any of these accidents, because there is no adequate natural resource damage assessment (NRDA) procedure and there are no internationally-admissible economic quantification methods established in Korea. The objective of this study is to propose a methodology to overcome these shortcomings...
June 7, 2017: Marine Pollution Bulletin
Laura K Elmer, Lisa A Kelly, Stephanie Rivest, S Clay Steell, William M Twardek, Andy J Danylchuk, Robert Arlinghaus, Joseph R Bennett, Steven J Cooke
A new geological epoch, the "Anthropocene", has been defined as the period in which humans have had substantial geological and ecological influence on the planet. A positive future for this epoch can be referred to as the "good Anthropocene" and would involve effective management strategies and changes in human behavior that promote the sustainability and restoration of ecosystems. Recreational fisheries hold significant social, cultural, and economic value and can generate many benefits when managed sustainably and thus be an integral part of a "good Anthropocene"...
June 9, 2017: Environmental Management
H Weimerskirch, D P Filippi, J Collet, S M Waugh, S C Patrick
Despite international waters covering over 60% of the world's oceans, our understanding of how fisheries in these regions shape ecosystem processes is surprisingly poor. Seabirds are known to forage at fishing vessels, with potential deleterious effects for their population, but the extent of overlap and behavior in relation to ships are poorly known. Using novel biologging devices, which can detect radar emissions to record the position of boats and seabirds, we measured the true extent of the overlap between seabirds and fishing vessels, and generated estimates of the intensity of fishing and distribution of vessels in international waters...
June 9, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
Giulia Prato, Pierre Thiriet, Antonio Di Franco, Patrice Francour
Monitoring fish assemblages is needed to assess whether Marine Protected Areas (MPAs) are meeting their conservation and fisheries management goals, as it allows one to track the progress of recovery of exploited species and associated communities. Underwater Visual Census techniques (UVC) are used to monitor fish assemblages in MPAs. UVCs should be adapted to fish abundance, body-size and behaviour, which can strongly affect fish detectability. In Mediterranean subtidal habitats, however, UVC strip transects of one surface area (25x5 m2) are commonly used to survey the whole fish assemblage, from large shy fish to small crypto-benthic fish...
2017: PloS One
J P Egan, U-S Chew, C-H Kuo, V Villarroel-Diaz, P J Hundt, N G Iwinski, M P Hammer, A M Simons
The diets and trophic guilds of small fishes were examined along marine sandy beaches and in estuaries at depths <1·5 m in western Taiwan, Republic of China. Copepods were the most frequently identified item in fish guts, indicating they are key prey for the fish assemblages studied. Piscivore, crustacivore, detritivore, omnivore, zooplanktivore and terrestrial invertivore trophic guilds were identified. The zooplanktivore guild contained the most fish species. Maximum prey size consumption was positively correlated with standard length (LS ) in seven species and at the assemblage level and negatively correlated with LS in a single detritivorous species...
June 7, 2017: Journal of Fish Biology
Chao Song, Le Li, Cong Zhang, Barry Kamira, Liping Qiu, Limin Fan, Wei Wu, Shunlong Meng, Gengdong Hu, Jiazhang Chen
As the most important fishery medicines, sulfonamides are widely used to prevent diseases caused by pathogens in aquaculture. However, relatively little is known about the residues and dietary risks associated with cultured fish around Tai Lake. In the present study, a sampling strategy for a complete aquaculture period was conducted. Specifically, 12 selected sulfonamide antibiotics were measured among 116 fish samples recruited from four sampling periods, four species, four areas, and 18 fish ponds. All 12 antibiotics were detected at detection frequencies of 4...
June 7, 2017: Environmental Science and Pollution Research International
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