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sustainable fishery

Marta Carreton, Joan B Company, Laia Planella, Sandra Heras, José-Luis García-Marín, Melania Agulló, Morane Clavel-Henry, Guiomar Rotllant, Antonina Dos Santos, María Inés Roldán
The early life stages of the blue and red shrimp Aristeus antennatus (Decapoda: Dendrobranchiata: Penaeoidea: Aristeidae) were described by Heldt in 1955 based on plankton samples, larval rearing and assumptions of species habitat. Even with adequate keys, identification of its first larval stages remained a difficult task due to the lack of specific morphological characters which would differentiate them from other Penaeoidea species. Larvae of Aristeus antennatus were collected in the continental slope off the Spanish Mediterranean coast in August 2016 with a neuston net and preserved in ethanol 96%...
2019: PeerJ
Sai Wang, Lin Wang, Yu Zheng, Zhong-Bing Chen, Yang Yang, Hsing-Juh Lin, Xiao-Qin Yang, Tuan-Tuan Wang
Eutrophication is a leading cause of impairment of lentic water bodies throughout the world. To inhibit algal blooms and remove excess nutrients, a 10,000 m2 restoration project consisting of vegetation establishment and fish manipulation was conducted in the eutrophic bay of the Yantian Reservoir, southern China. Three Ecopath models were constructed to assess the recovery effects at an ecosystem level, and time series data were simulated to propose a fishery policy. During the restoration, 1) the redundant primary production flowing back to detritus decreased due to the increased predation of four stocked fish with different feeding habits; 2) the transfer efficiencies (TEs) through trophic levels increased due to the reinforced energy flows along the planktivorous, herbivorous, and molluscivorous food chains; 3) the groups that had the highest keystoneness shifted from carnivorous fish to invertivorous fish and omnivorous shrimp, indicating the shift of mixed trophic impacts from top-down to wasp-waist control; and 4) the changing indices of path length, flow fluxes, matter cycling, and network information showed that the restored system was more mature, developed, and organized than before...
January 28, 2019: Science of the Total Environment
James H Barrett
This paper explores the past and potential contribution of archaeology to marine historical ecology. The primary focus is European fishing of marine and diadromous taxa, with global comparisons highlighting the wider applicability of archaeological approaches. The review illustrates how study of excavated fish bones, otoliths and shells can inform our understanding of: (a) changes in biogeography, including the previous distribution of lost species; (b) long-term fluctuations in the aquatic environment, including climate change; (c) the intensity of exploitation and other effects; (d) trade, commodification and globalisation...
February 12, 2019: Journal of Fish Biology
David J Agnew
Over the past 20 years many different certification or rating schemes for sustainable fisheries have evolved, that attempt to influence consumer tastes and preferences and thereby incentivise better fisheries practices. This short review paper aims to document the history of such schemes, to consider their apparent differences and the basis upon which sustainability standards were developed. While there is some consistency between schemes in terms of the elements that should be considered as part of sustainability, and the general outcomes that sustainable fisheries should strive for, with the exception of maximum sustainable yield there is less agreement on the specific details of how this should be measured or what reference points should be considered as sustainable...
February 12, 2019: Journal of Fish Biology
Rui P Vieira, Clive N Trueman, Lisa Readdy, Andrew Kenny, John K Pinnegar
In this paper, we revisit the state of deep-water fisheries to the west of the British Isles and aim to provide an overview on the key drivers behind community changes along continental margins. The deep-water fisheries to the west of the British Isles that extend from the shelf-slope break down to the lower slope and along banks and seamounts of the Rockall Basin, mainly target blue ling Molva dypterygia, roundnose grenadier Coryphaenoides rupestris, orange roughy Hoplostethus atlanticus, with by-catches of black scabbardfish Aphanopus carbo and tusk Brosme brosme...
February 12, 2019: Journal of Fish Biology
Lianthuamluaia Lianthuamluaia, Puthiyottil Mishal, Debabrata Panda, Uttam Kumar Sarkar, Vikash Kumar, Kavitha Mandhir Sandhya, Gunjan Karnatak, Suman Kumari, Asit Kumar Bera, Subrata Das, Yusuf Ali
Reservoirs have been given priority as an important resource for fisheries enhancement in inland open waters. This paper described the spatial and temporal pattern of fish diversity using GIS platform, assemblage structure, and studied the influence of environmental parameters in these variables in a large tropical reservoir, Chandil, located in the eastern India using multiple approaches. Altogether, 42 fish species belonging to 30 genera were recorded from the reservoir, including two exotic species: pangas, Pangasianodon hypophthalmus, and Nile tilapia, Oreochromis niloticus...
February 4, 2019: Environmental Science and Pollution Research International
Paulina Cetina-Heredia, Moninya Roughan, Geoffrey Liggins, Melinda A Coleman, Andrew Jeffs
The influence of physical oceanographic processes on the dispersal of larvae is critical for understanding the ecology of species and for anticipating settlement into fisheries to aid long-term sustainable harvest. This study examines the mechanisms by which ocean currents shape larval dispersal and supply to the continental shelf-break, and the extent to which circulation determines settlement patterns using Sagmariasus verreauxi (Eastern Rock Lobster, ERL) as a model species. Despite the large range of factors that can impact larval dispersal, we show that within a Western Boundary Current system, mesoscale circulation explains broad spatio-temporal patterns of observed settlement including inter-annual and decadal variability along 500 km of coastline...
2019: PloS One
A Rathipriya, K Karal Marx, R Jeyashakila
The partial sequences of cytochrome c oxidase subunit I (COI) mitochondrial gene were analysed for developing species specific molecular signatures and phylogenetic relationship among the commercially important flying fishes (Cheilopogon cyanopterus, Cheilopogon furcatus and Hirundichthys coromandelensis) distributed in Tamil Nadu coast. Accurate identification of these species is important for fishery management as its morphological characters are very similar. Since the morphological features are very similar, accurate identification using molecular tools is essential for sustainable utilization and management of these species across their distributional range...
January 29, 2019: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
Moritz Stäbler, Alexander Kempf, Sophie Smout, Axel Temming
In marine ecosystems, maximum sustainable yield considerations are affected by any substantial changes that occur in the top and bottom compartments of the food-web. This study explores how the southern North Sea's fisheries may need to adjust their fishing efforts to maintain optimum yields of sole, plaice, cod and brown shrimps under increased marine mammal populations and a reduced primary productivity. We constructed plausible scenarios of ongoing food-web changes using the results of Bayesian age-structured population models to estimate carrying capacities of harbour porpoises (Phocoena phocoena) and grey seals (Halichoerus grypus)...
2019: PloS One
Lydia C L Teh, Richard Caddell, Edward H Allison, Elena M Finkbeiner, John N Kittinger, Katrina Nakamura, Yoshitaka Ota
Sustainability standards for seafood mainly address environmental performance criteria and are less concerned with the welfare of fisheries workers who produce the seafood. Yet human rights violations such as slavery and human trafficking are widespread in fisheries around the world, and underscore the need for certification bodies and other seafood supply chain actors to improve social performance, in addition to addressing environmental challenges. Calls for socially responsible seafood have referenced human rights law and policy frameworks to shape the guiding principles of socially responsible seafood and to provide the legal machinery to implement these aspirations, but practical guidance on how to achieve this is lacking...
2019: PloS One
Jessica Couture, Roland Geyer, Jon Øvrum Hansen, Brandon Kuczenski, Margareth Øverland, Joseph Palazzo, Christian Sahlmann, Hunter S Lenihan
Global population growth and changing diets increase the importance, and challenges, of reducing the environmental impacts of food production. Farmed seafood is a relatively efficient way to produce protein and has already overtaken wild fisheries. The use of protein-rich food crops, such as soy, instead of fishmeal in aquaculture feed diverts these important protein sources away from direct human consumption and creates new environmental challenges. Single cell proteins (SCPs), including bacteria and yeast, have recently emerged as replacements for plant-based proteins in salmon feeds...
January 17, 2019: Environmental Science & Technology
Zhengping Zhang, Shaoxuan Yang, Hanyu Li, Yongxi Zan, Xueyan Li, Ying Zhu, Meiling Dou, Feng Wang
Although carbon is the second most abundant element in the biosphere, a large proportion of the available carbon resources in biomass from agriculture, stock farming, ocean fisheries, and other human activities is currently wasted. The use of sustainable carbonaceous materials as an alternative to precious metals in electrocatalysis is a promising pathway for transforming sustainable biomass resources into sustainable energy-conversion systems. The development of rational syntheses of metal-free carbonaceous catalysts derived from sustainable biomass has therefore become a topic of significant interest in materials chemistry...
December 27, 2018: Advanced Materials
Juliano Palacios-Abrantes, Juliana Herrera-Correal, Salvador Rodríguez, Jacy Brunkow, Renato Molina
Small-scale fisheries are large contributors to regional economies and livelihoods in coastal communities of Latin America. While Mexico is one of the cases where small-scale fisheries play an important role, overfishing and poor management strategies have led to the collapse of many of its fisheries. The callo de hacha scallop fishery of the Ensenada de La Paz in Baja California Sur is an example of such a fishery which, after years of mismanagement, was closed by the Mexican authorities in 2009. The present study evaluated the recovery efforts in the cove and the potential outcomes of a collaboration between a non-governmental organization and a fishing community working towards the restoration of this pen-shell fishery...
2018: PloS One
Camilla Brattland, Einar Eythórsson, Jørn Weines, Knut Sunnanå
Through the construction of a socio-ecological timeline for the Porsanger fjord ecosystem, this article illustrates the different ways in which environmental and social-ecological changes have influenced the adaptations of rural households in coastal Sami communities in Finnmark, north Norway. The main finding is that, although environmental change in the form of seal invasions and dwindling fish stocks directly impacted the fisheries, the introduction of a new vessel quota system decisively changed adaptive capacity and coastal Sami household adaptation strategies...
December 19, 2018: Ambio
Anitha R Arathi, P Graham Oliver, Raveendhiran Ravinesh, Appukuttannair Biju Kumar
The economically valuable bivalve mollusc, known as the short-neck clam, is the major fishery resource of the brackishwater Ashtamudi Lake in Kerala, India. This fishery carries a Marine Stewardship Council certification for sustainability wherein it and all hitherto published reports identify the short-neck clam or yellow-foot clam as Paphiamalabarica (Dillwyn, 1817). It is noted that this name does not conform with current nomenclature and is now correctly referred to Protapesgallus (Gmelin, 1791). Furthermore, it is shown that the identification is also incorrect...
2018: ZooKeys
David Grémillet, Aurore Ponchon, Michelle Paleczny, Maria-Lourdes D Palomares, Vasiliki Karpouzi, Daniel Pauly
Fisheries transform marine ecosystems and compete with predators [1], but temporal trends in seabird-fishery competition had never been assessed on a worldwide scale. Using catch reconstructions [2] for all fisheries targeting taxa that are also seabird prey, we demonstrated that average annual fishery catch increased from 59 to 65 million metric tons between 1970-1989 and 1990-2010. For the same periods, we estimated that global annual seabird food consumption decreased from 70 to 57 million metric tons. Despite this decrease, we found sustained global seabird-fishery food competition between 1970-1989 and 1990-2010...
November 26, 2018: Current Biology: CB
Taynara P Franco, Cristiano Q Albuquerque, Rosa S Santos, Tatiana D Saint'Pierre, Francisco G Araújo
Movements of coastal fish species between estuarine systems (rearing grounds) and adjacent platforms (spawning grounds) are complex and can be influenced by multiple biotic and abiotic factors associated with the life cycle of each species. Understanding fish movement patterns between these habitats is crucial for sustainable management of these resources. We aimed to identify movement patterns of the whitemouth croaker Micropogonias furnieri, an important fishery resource along the southeastern Brazilian coast, through characterization of elemental concentration profiles in otoliths...
November 27, 2018: Marine Environmental Research
Sarah J Dolman, Philippa Brakes
The incidental capture of cetaceans and other protected marine wildlife in fishing gear has significant welfare implications. Many thousands of cetaceans are bycaught in fishing gear in European waters and hundreds of thousands die globally. We can expect many more to survive, but suffer from such interactions. As marine policy focuses on "population level" impact assessments and "sustainability" of fishing to preserve fish populations, the impacts to the bycaught individual, and their wider social group, are often largely underestimated, despite the large numbers affected...
2018: Frontiers in Veterinary Science
Carsten Niemitz
As the number of human individuals increases on a planet of invariable size and measures, the ecological conditions vary to a corresponding extent. Quite a number of biotic and abiotic factors are a matter of daily news as well as of current scientific discussions. In this contribution, eleven ecological fields concerning human life are analysed: • area available with respect to various competing utilisations, • fresh water needed as drinking water, for industrial processes and for irrigation as well as for other human purposes, • food production, nutrition and related aspects, • required fossil and regenerative energies, • atmosphere and climate, • marine ecology and fisheries, • human waste and ecological aftereffects, • the ecological functions of forests for human life, • biodiversity, • the Ecological Footprint, and • the development of human population increase...
November 30, 2018: Anthropologischer Anzeiger; Bericht über die Biologisch-anthropologische Literatur
Katharina Renner-Martin, Norbert Brunner, Manfred Kühleitner, Werner-Georg Nowak, Klaus Scheicher
The Bertalanffy-Pütter growth model describes mass m at age t by means of the differential equation d m /d t = p * m a  -  q * mb . The special case using the von Bertalanffy exponent-pair a = 2/3 and b = 1 is most common (it corresponds to the von Bertalanffy growth function VBGF for length in fishery literature). Fitting VBGF to size-at-age data requires the optimization of three model parameters (the constants p , q , and an initial value for the differential equation). For the general Bertalanffy-Pütter model, two more model parameters are optimized (the pair a < b of non-negative exponents)...
2018: PeerJ
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