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| Merluccius | |
|---|---|
| Name | Merluccius |
| Regnum | Animalia |
| Phylum | Chordata |
| Classis | Actinopterygii |
| Ordo | Gadiformes |
| Familia | Merlucciidae |
| Genus | Merluccius |
| Authority | Rafinesque, 1810 |
Merluccius is a genus of marine fishes in the family Merlucciidae known commonly as hakes. Originating in temperate and subtropical waters of the Atlantic and Pacific Oceans, the genus includes commercially important species targeted by industrial fleets and artisanal fisheries. Taxonomic study of the genus has involved museum collections, ichthyologists, and fisheries scientists across institutions such as the Natural History Museum, Smithsonian Institution, and FAO.
The genus was described by Constantine Samuel Rafinesque and sits within the order Gadiformes alongside families represented in ichthyological works by Albert Günther and Carl Linnaeus. Modern taxonomic revisions have been published by researchers at institutions like the Muséum national d'Histoire naturelle, CSIC, and the Smithsonian Institution. Molecular phylogenetics using markers employed in studies by labs at Scripps Institution of Oceanography, University of Barcelona, University of Vigo, and University of British Columbia have clarified relationships among species such as those described from the North Atlantic, South Atlantic, Mediterranean, and Pacific basins. Recognized species (depending on authority) include taxa assessed in catalogs by FAO and regional monographs produced by the ICES. Nomenclatural issues have been addressed in journals like Journal of Fish Biology, Zootaxa, and Ichthyological Research, and specimen records are held in collections at Museo Nacional de Historia Natural (Chile), Musée Océanographique de Monaco, and the Natural History Museum, London.
Members of the genus exhibit elongate, compressed bodies with a large mouth and a prominent lower jaw noted in descriptions by authors such as Cuvier and Georges Cuvier. Morphological diagnoses use characters standardized by the International Commission on Zoological Nomenclature and measured in studies at universities including University of Oxford and Harvard University. Diagnostic traits include dorsal fin counts, number of vertebrae used in keys in publications from the American Fisheries Society, and otolith morphology compared in works from the Royal Ontario Museum. Coloration and meristic data have been summarized in field guides from institutions like FAO and regional guides published by the European Commission and national agencies such as Instituto Español de Oceanografía.
Species occupy temperate shelves and slopes of the Atlantic and Pacific, with notable ranges along coasts of Argentina, Chile, Spain, Portugal, Mauritania, Namibia, South Africa, New Zealand, Australia, Japan, Canada, and the United States. Records from surveys by organizations including the International Council for the Exploration of the Sea and national programs such as NOAA and ICES place populations from shallow coastal waters to continental slope depths sampled by research vessels like those from Ifremer and CSIC. Habitats include soft-bottom demersal zones, bathymetric features surveyed in expeditions by the RRS James Cook and the NOAA Ship Okeanos Explorer, and regions influenced by currents such as the Gulf Stream, Benguela Current, Humboldt Current, and California Current.
Life-history studies published in journals like Marine Ecology Progress Series and Fisheries Research document age, growth, and reproduction investigated by teams at University of Lisbon, Federal University of Rio Grande do Sul, and University of Cape Town. Diet analyses reference prey taxa cataloged by Smithsonian Institution researchers and include cephalopods, crustaceans, and small teleosts sampled in surveys coordinated with agencies such as ICES and NOAA Fisheries. Predators and ecological interactions are noted in ecosystem studies by PICES and ecosystem-based assessments by the FAO and IPCC that consider changing oceanographic conditions. Spawning seasons and larval development have been described in regional atlases compiled by the European Commission and national fisheries laboratories including CEFAS and IFOP.
Hakes of this genus form the basis of major fisheries managed by regional bodies like the Northwest Atlantic Fisheries Organization, South Pacific Regional Fisheries Management Organisation, and national agencies including Department of Fisheries and Oceans (Canada), Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), and South African Department of Agriculture, Forestry and Fisheries. Commercial sectors from trawl fleets operating out of ports such as Mar del Plata, Scheveningen, Galway, Vigo, Luderitz, and Hokkaido supply markets in retailers associated with companies listed on exchanges including the London Stock Exchange and Tokyo Stock Exchange. Value chains documented in reports by FAO and World Bank highlight processing facilities, export-oriented supply managed under standards from Marine Stewardship Council and regulations from European Union and national legislative acts.
Population assessments appear in stock reports by ICES, FAO, NAFO, and regional scientific councils, with conservation listings evaluated against criteria of the IUCN Red List and national endangered species frameworks such as those administered by NOAA and the European Commission. Management measures include quotas, bycatch mitigation, gear restrictions, and marine protected areas designated under frameworks promoted by CBD and implemented by nations like South Africa, Argentina, and New Zealand. Research partnerships among universities, government agencies, and NGOs including WWF and The Nature Conservancy support monitoring, rebuilding plans, and ecosystem-based management advised by panels convened at institutions such as the University of British Columbia and ICES.