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| Sebastes mentella | |
|---|---|
| Name | Deepwater redfish |
| Taxon | Sebastes mentella |
Sebastes mentella is a species of deepwater rockfish in the family Scorpaenidae, commonly called beaked redfish or deepwater redfish. It is a long-lived, slow-growing demersal and mesopelagic species of the North Atlantic that supports commercial fisheries and has been central to international fisheries negotiations. Its biology and management intersect with institutions and agreements across Europe and North America.
Sebastes mentella was described in the 19th century and placed in the genus Sebastes within Scorpaenidae, a placement referenced in taxonomic treatments and catalogs used by institutions such as the Natural History Museum, London, the Smithsonian Institution, and the Royal Society. Nomenclatural decisions and species limits have been discussed in publications associated with the International Commission for the Exploration of the Sea and the Food and Agriculture Organization of the United Nations. Historic taxonomists and modern ichthyologists working at the Sächsische Akademie der Wissenschaften and universities such as University of Oslo and University of Bergen have contributed to its classification. Common names in fisheries literature include beaked redfish and deepwater redfish; these appear in reports by the North Atlantic Treaty Organization and regional bodies like the European Union fisheries directorates.
Sebastes mentella is characterized by a robust, laterally compressed body, large eyes, and a projecting snout, features noted in diagnostic keys used by the British Museum (Natural History), the American Museum of Natural History, and the Canadian Museum of Nature. Coloration is reddish to orange-red, described in field guides issued by institutions including the National Oceanic and Atmospheric Administration and the Fisheries and Oceans Canada. Meristic and morphometric characters used in identification appear in monographs and checklists from the Royal Society Publishing and the Journal of Fish Biology, where comparisons are drawn with congeners treated in the International Union for Conservation of Nature assessments. Size ranges and sexual dimorphism data have been cited in datasets compiled by organizations such as the Organisation for Economic Co-operation and Development.
Sebastes mentella inhabits cold waters of the North Atlantic, with distributional records and survey data archived by the International Council for the Exploration of the Sea, the Icelandic Marine Research Institute, and the Russian Academy of Sciences. It occurs from the continental slopes and seamounts near Greenland and the Faroe Islands to the shelves off Norway and the continental margins near Newfoundland and Labrador. Habitat descriptions in regional atlases published by the European Commission and the Canadian Government note depths ranging from upper continental slopes to mesopelagic strata, often associated with oceanographic features monitored by programs like World Meteorological Organization ocean observing and the Global Ocean Observing System.
Life-history traits of Sebastes mentella—longevity, late maturity, and episodic recruitment—are detailed in ecological reviews produced by the International Council for the Exploration of the Sea and in papers from research groups at the University of Bergen, the Institute of Marine Research (Norway), and the Marine Institute (Ireland). It feeds on zooplankton and small nekton, as reported in studies published in journals such as Nature and Marine Ecology Progress Series, and interacts with predators and competitors documented in surveys by the North Atlantic Fisheries Organization and academic teams at Dalhousie University. Larval dispersal and population structure have been subjects of genetics work involving the European Molecular Biology Laboratory and collaborations with the Wellcome Trust-funded projects. Seasonal and depth-related migrations are discussed in relation to oceanographic processes characterized by the International Hydrographic Organization.
Sebastes mentella has been the target of trawl, longline, and gillnet fisheries regulated through regional arrangements such as quotas and technical measures negotiated by the North Atlantic Salmon Conservation Organization and the North East Atlantic Fisheries Commission and implemented by national agencies including Marine Scotland and Fisheries and Oceans Canada. Stock assessments and management advice have been provided by the International Council for the Exploration of the Sea and incorporated into policy frameworks of the European Commission and bilateral agreements involving Iceland and the Russian Federation. Market chains and certification efforts have engaged organizations such as the Marine Stewardship Council and trade bodies in London and Tokyo.
Conservation status evaluations for Sebastes mentella appear in assessments by the International Union for Conservation of Nature and regional stock status reports produced by the International Council for the Exploration of the Sea and national institutes like the Icelandic Marine Research Institute. Concerns over overcapacity and rebuilding timelines have been raised in forums convened by the Food and Agriculture Organization of the United Nations, the Organisation for Economic Co-operation and Development, and policy meetings held in capitals such as Brussels and Ottawa. Measures to reduce bycatch and protect habitats have been promoted by NGOs and intergovernmental programs including those run by the World Wide Fund for Nature and the United Nations Environment Programme.
Category:Sebastes Category:Fish of the North Atlantic