Sebastes ciliatus

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Sebastes ciliatus
FMIB 35445 Sebastodes ciliatus.jpeg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Scorpaenidae
Genus: Sebastes
Species:
S. ciliatus
Binomial name
Sebastes ciliatus
(Tilesius, 1813)
Synonyms [1]
  • Epinephelus ciliatusTilesius, 1813
  • Sebastichthys ciliatus(Tilesius, 1813)
  • Sebastodes ciliatus(Tilesius, 1813)
  • Sebastostomus ciliatus(Tilesius, 1813)

Sebastes ciliatus, the dusky rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is typically found in the North Pacific Ocean, specifically in the Bering Sea near British Columbia, in the Gulf of Alaska, and in the depths of the Aleutian Islands. [2]

Contents

Taxonomy

Sebastes ciliatus was first formally described in 1813 as Epinephelus ciliatus by the German naturalist and explorer Wilhelm Gottlieb Tilesius von Tilenau with the type locality given as the Lynn Canal, north of Funter Bay. [3] The species Sebastes ciliatus (dark dusky) and Sebastes variabilis (light dusky) were previously considered conspecific before being reclassified as separate species based on a genetic study. [2] [4] [5] [6] The latter are found in deeper waters than the former. [2] Some authorities place this species in the subgenus Sebastosomus. The specific name ciliatus means “ciliate”, i.e. similar to an eyelid being fringed with lashes, an allusion to the many accessory scales bearing a resemblance to fringing eyelashes located on posterior field of scales, a feature of the larger scales in most species in the genus Sebastes . [7]

Description

The body of S. ciliatus usually range from dark blue to black all across their body. There are significant deposits of pigment around the tail and midlateral areas. [6] S. ciliatus normally has 28 vertebrae. [6] It has a slightly less prominent symphyseal knob than S. variabilis and its anal fins are more rounded. [8] Juvenile S. ciliatus have head spines that are not found on adult S. ciliatus, indicating that these spines are lost during the transition to adulthood. [6]

The von Bertalanffy growth function is used to explain fish growth as a function of age of the fish. This growth model shows that the growth parameters were similar for both sexes, as well as for all habitats. [8] A distinctive trait that differentiates female S. ciliatus from other females of other rockfish species is that the maximum length of female S. ciliatus is closer to that of males. [8]

Habitat

the species occurs in the North Pacific Ocean, distributed in aggregations across northern Japan to British Columbia. [2] Sebastes ciliatus are found in large numbers in the Gulf of Alaska, especially around submarine canyon openings and deep ocean banks. [8] Most adults of S. ciliatus are found at a depth of around 100-200m. [8] Throughout the development of S. ciliatus, each stage of development correlates with a respective habitat. Larger and older rockfish of this species are often located at deeper depths, unlike their smaller and younger counterparts. [8] The light dusky rockfish is more commonly found on the outer continental shelf and upper slope at depths of 675m and is rarely found in nearshore marine habitats. [2] The darker colored form of dusky rockfish is more commonly found in nearshore habitats and is usually not found at depths beyond 160m. [2] In areas where the distributions of both species, S. ciliatus and S. variabilis overlap, S. variabilis is located at greater depths where there are stronger currents, whereas S. ciliatus are found living among kelp, Macrocystis , along with S. melanops . [2]

Fisheries

Sebastes ciliatus is one among many species of rockfish that is targeted as commercial harvest in the North Pacific. [6] Since 1998, the two forms of dusky rockfish are placed into designated fisheries that are managed by the U.S. federal and Alaska state agencies. [2] The increasing development of the S. ciliatus offshore fishery was due to the decline in Pacific ocean perch harvest. [8] The light dusky rockfish is dominant in the marine shelf rockfish fisheries. [2] The dark dusky rockfish are usually placed in nearshore fisheries. [2] In the Aleutian and Gulf of Alaska waters, S. ciliatus is often caught by trawl with S. melanops (black rockfish) as S.ciliatus is frequently mistaken for the black rockfish. [2] The females that are caught by trawl in the summer were often near-term and bear eyed larvae. [2]

Related Research Articles

Gopher rockfish Species of fish

The gopher rockfish, also known as the gopher sea perch, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the eastern Pacific, primarily off California.

Blue rockfish Species of fish

The blue rockfish or blue seaperch, is a species of rockfish of the northeastern Pacific Ocean, ranging from northern Baja California to central Oregon.

Canary rockfish Species of fish

The canary rockfish is a rockfish of the northeast Pacific Ocean, found from south of Shelikof Strait in the eastern Gulf of Alaska to Punta Colonet in northern Baja California.

Pacific ocean perch Species of fish

The Pacific ocean perch, also known as the Pacific rockfish, Rose fish, Red bream or Red perch, is a fish whose range spans across the North Pacific : from southern California around the Pacific rim to northern Honshū, Japan, including the Bering Sea. The species appears to be most abundant in northern British Columbia, the Gulf of Alaska, and the Aleutian Islands.

Copper rockfish Species of fish

The copper rockfish, also known as the copper seaperch, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the eastern Pacific.

<i>Sebastes capensis</i> Species of fish

Sebastes capensis, the false jacopever or Cape redfish is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the South Atlantic Ocean and may also occur off southern and western South America.

Shortraker rockfish Species of fish

The shortraker rockfish is an offshore, demersal species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the northern Pacific Ocean.

Bocaccio rockfish Species of fish

The bocaccio is a northeast Pacific species in the Sebastidae (rockfish) family. Other names for this species include salmon grouper, grouper, tom cod (juveniles), and slimy. In Greek, sebastes means "magnificent", and paucispinis is Latin for "having few spines".

Yellowtail rockfish Species of fish

Sebastes flavidus, the yellow tail rockfish, is a type of rockfish (Sebastidae) that lives mainly off the coast of western North America from California to Alaska. This fish is also commonly called yellowtail rockfish or yellowtail seaperch.

Starry rockfish Species of fish

The starry rockfish, also known as the spotted corsair, spotted rockfish, chinafish, and red rock cod, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the eastern Pacific Ocean.

Yelloweye rockfish Species of fish

The yelloweye rockfish is a rockfish of the genus Sebastes, and one of the biggest members of the genus. Its name derives from its coloration. It is also locally known as "red snapper", not to be confused with the warm-water Atlantic species Lutjanus campechanus that formally carries the name red snapper. The yelloweye is one of the world's longest-lived fish species, and is cited to live to a maximum of 114 to 120 years of age. As they grow older, they change in color, from reddish in youth, to bright orange in adulthood, to pale yellow in old age. Yelloweye live in rocky areas and feed on small fish and other rockfish. They reside in the East Pacific and range from Baja California to Dutch Harbor in Alaska.

Black rockfish Species of fish

The black rockfish, also known variously as the black seaperch, black bass, black rock cod, sea bass, black snapper and Pacific Ocean perch, is a rockfish of the genus Sebastes. It is sometimes misidentified as the "red snapper".

Rougheye rockfish Species of fish

The rougheye rockfish is a rockfish of the genus Sebastes. It is also known as the blackthroat rockfish or the blacktip rockfish and grows to a maximum of about 97 cm (38 in) in length, with the IGFA record weight being 14 lb 12 oz (6.7 kg). Similar to many other members of its genus, it is extremely long-lived, and has been known to reach an age of 205 years.

Brown rockfish Species of fish

The brown rockfish, whose other names include brown seaperch, chocolate bass, brown bass and brown bomber, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the northeastern Pacific Ocean.

<i>Sebastes atrovirens</i> Species of fish

Sebastes atrovirens, the kelp rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is native to the Pacific Ocean along the coast of California in the United States and Baja California in Mexico.

Redbanded rockfish Species of fish

The redbanded rockfish, also known as the bandit, barber pole, flag rockfish, Spanish flag, Hollywood, convict, and canary, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the northern Pacific Ocean.

<i>Sebastes rufinanus</i> Species of fish

Sebastes rufinanus, the dwarf-red rockfish, is a species of ray-finned fish in the family Sebastidae.

<i>Sebastes aurora</i> Species of fish

Sebastes aurora, the aurora rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the northeastern Pacific Ocean.

<i>Sebastes chlorostictus</i> Species of fish

Sebastes chlorostictus, the greenspotted rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the Eastern Pacific.

<i>Sebastes reedi</i> Species of fish

Sebastes reedi is a species of fish in the rockfish family found in the Eastern Pacific.

References

  1. ↑ Froese, Rainer and Pauly, Daniel, eds. (2021). "Sebastes ciliatus" in FishBase. June 2021 version.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 Orr, James W. and Blackburn, James E. (2004) The dusky rockfishes (Teleostei: Socrpaeniformes) of the North Pacific Ocean: resurrection of Sebastes variabilis (Pallas, 1814) and a redescription of Sebastes ciliatus (Tilesius, 1813). Fishery Bulletin, 102(2), pp. 328-348.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Sebastes". Catalog of Fishes . California Academy of Sciences . Retrieved 7 November 2021.
  4. ↑ Westrheim, S. J., and L. W. Seeb. 1997. Unpubl. manuscript. Investigation of the Sebastes ciliatus species group, 36 p. Fisheries and Oceans Canada, Pacific Biological Station, Nanaimo, BC, Canada V9R 5K6.
  5. ↑ Seeb, L. 1986. Biochemical systematics and evolution of the scorpaenid genus Sebastes. Ph.D. diss., 176 p. Univ. Washington, Seattle, WA.
  6. 1 2 3 4 5 Heifetz, J., Dicosimo, J., Gharrett, A. J., Love, M. S., O'Connell, V. M., & Stanley, R. D. (2007). Biology, assessment, and management of North Pacific Rockfishes (No. AK-SG-). Alaska Sea Grant College Program.
  7. ↑ Christopher Scharpf & Kenneth J. Lazara, eds. (22 May 2021). "Order Perciformes (Part 8): Suborder Scorpaenoidei: Families Sebastidae, Setarchidae and Neosebastidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 7 November 2021.
  8. 1 2 3 4 5 6 7 Reuter, R. F. 1999. Describing dusky rockfish (Sebastes ciliatus) habitat in the Gulf of Alaska using historical data. M.S. Thesis, California State University, Hayward CA.
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