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| arrowtooth flounder | |
|---|---|
| Name | Arrowtooth flounder |
| Regnum | Animalia |
| Phylum | Chordata |
| Classis | Actinopterygii |
| Ordo | Pleuronectiformes |
| Familia | Pleuronectidae |
| Genus | Atheresthes |
| Species | A. stomias |
| Binomial | Atheresthes stomias |
| Binomial authority | (Jordan & Gilbert, 1880) |
arrowtooth flounder is a species of right-eyed flatfish native to the northeastern Pacific Ocean noted for its expansive range, commercial significance, and characteristic tooth structure. It is among the demersal fishes targeted by fisheries off the coasts of North America and Asia and figures in ecological studies of continental shelf ecosystems. Research on this species intersects with work on fisheries management agencies, oceanographic institutions, and conservation organizations.
Atheresthes stomias was described by David Starr Jordan and Charles Henry Gilbert in 1880 and is placed in the family Pleuronectidae alongside taxa studied by institutions such as the Smithsonian Institution and the American Fisheries Society. Morphological descriptions appear in monographs from the California Academy of Sciences and comparative anatomy studies associated with the Royal Society and the National Oceanic and Atmospheric Administration. Adults typically reach lengths reported by the Alaska Department of Fish and Game and the British Columbia Ministry of Forests, Lands and Natural Resource Operations; diagnostic characters include a highly compressed body, rough skin due to minute scales, and a series of small, depressible canine-like teeth that give rise to the common name. Taxonomic keys published by museums such as the Natural History Museum, London and the Canadian Museum of Nature distinguish A. stomias from congeners using meristic counts and lateral line morphology.
The species occurs across the subarctic and temperate shelf seas of the northeastern Pacific, with documented ranges extending from the waters surveyed by the National Marine Fisheries Service in the Gulf of Alaska to the continental margins cataloged by the Fisheries and Oceans Canada along the British Columbia coast and into the Bering Sea mapped by the Alaska Fisheries Science Center. Habitat descriptions in reports from the Pew Charitable Trusts and the Monterey Bay Aquarium Research Institute indicate preference for soft-sediment substrates on the continental shelf and upper slope, commonly found at depths recorded in surveys by the North Pacific Fishery Management Council. Seasonal movements and distribution shifts have been assessed in conjunction with studies by the University of Washington and the University of Alaska Fairbanks focusing on oceanographic drivers.
Ecological studies conducted by researchers affiliated with the Pacific Biological Station and the University of British Columbia describe demersal behavior, cryptic coloration, and substrate-oriented ambush strategies typical of flatfishes cataloged in works from the Scripps Institution of Oceanography and the Woods Hole Oceanographic Institution. Behavioral observations in trawl and benthic camera surveys coordinated by the North Pacific Research Board and the Alaska Ocean Observing System document diel and ontogenetic habitat shifts, while ecosystem modeling efforts by the International Council for the Exploration of the Sea and the National Research Council (US) incorporate the species as a component predator within multispecies assemblages.
Dietary analyses published by teams at the University of British Columbia, the University of Alaska, and the Alaska SeaLife Center report a diet dominated by midwater and benthic prey taxa identified in taxonomic treatments from the Smithsonian Institution and the American Museum of Natural History, including gadids, euphausiids, cephalopods, and polychaetes noted in faunal lists by the Royal Ontario Museum. Predators of the species include larger piscivores such as halibut documented in the literature from the International Pacific Halibut Commission and marine mammals surveyed by the North Pacific Marine Science Organization, while parasitological studies by the Canadian Journal of Fisheries and Aquatic Sciences and the Journal of Fish Biology record helminths and ectoparasites described by parasitologists associated with the Natural History Museum, London.
Reproductive biology has been examined in programs run by the Alaska Fisheries Science Center and the North Pacific Fishery Management Council, with spawning occurring seasonally on continental shelves, planktonic eggs and larvae described in larval fish guides produced by the National Marine Fisheries Service and the Fisheries and Oceans Canada. Growth rates and age determination use otolith analyses standardized in protocols from the International Council for the Exploration of the Sea and academic laboratories at the University of Washington. Life-history parameters are incorporated into stock assessments prepared by the Pacific Fishery Management Council and regional assessment groups such as the North Pacific Anadromous Fish Commission.
The species is a target of trawl and longline fisheries managed by agencies including the North Pacific Fishery Management Council, the Pacific Fishery Management Council, and national authorities like the Alaska Department of Fish and Game and Fisheries and Oceans Canada. Landings data appear in annual summaries from the National Oceanic and Atmospheric Administration and economic analyses by the Food and Agriculture Organization of the United Nations and the World Wildlife Fund examine market pathways, processing, and bycatch considerations. Commercial importance has driven research collaborations with industry stakeholders represented by the National Fisheries Institute and regional fishing associations documented in reports from the University of Alaska Anchorage.
Management frameworks are informed by stock assessments and ecosystem-based recommendations from the North Pacific Fishery Management Council, the International Council for the Exploration of the Sea, and the National Marine Fisheries Service, with catch limits, monitoring programs, and bycatch mitigation measures implemented through cooperative efforts with agencies such as the Alaska Department of Fish and Game and Fisheries and Oceans Canada. Conservation status evaluations engage organizations like the IUCN and regional advisory bodies including the North Pacific Research Board and nongovernmental organizations such as the Pew Charitable Trusts in efforts to integrate climate-change projections from centers like the National Oceanic and Atmospheric Administration and the Scripps Institution of Oceanography into adaptive management.
Category:Fish of the Pacific Ocean