Overview

Comprehensive Description

Description

  Common names: crevalle-jack (English), jurel (Espanol)
 
Caranx caninus Günther, 1867


Pacific crevalle-jack


Body moderately compressed, a moderately deep oblong; mouth reaches past eye; top jaw with an outer row of canines and an inner band of fine teeth; lower jaw with one row of teeth; gill rakers (excluding rudiments) 3-6 + 15-17; margin of body at rear of gill chamber without papillae; pectoral fins longer than head; dorsal rays VIII + I, 19-21; anal rays II + I, 16-17; dorsal and anal fins not followed by finlets; lateral line with a pronounced, moderately long anterior arch, straight part with 35-42 strong scutes; breast scaled except for a small area in front of pelvic fins, and on base of pectoral fin.



Greenish blue or bluish black on back, silvery white to yellowish or golden on lower side; black spot on gill cover; lower corner of pectoral fin with a black blotch; yellowish tail and anal fins.



Size: attains 100 cm; 17.7kg.

Habitat: common in estuaries.

Depth: 3-350 m.



Southern California to the Gulf of California to Peru, and the Revillagigedos, Galapagos, Cocos and Malpelo.
   
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Biology

Occurs in oceanic and coastal waters, commonly found in shallow water, with larger individuals up to 350 m depth (Ref. 9283). Also found in brackish water and occasionally ascends rivers (Ref. 9283). Forms medium-sized to big schools, but large adults may be solitary (Ref. 9283). Juveniles are often found in river estuaries (Ref. 9283). Feeds mainly on fishes, but also takes shrimps and other invertebrates (Ref. 9283). Often makes a grunting sound when captured (Ref. 9283). Marketed fresh, frozen, smoked and salted or dried; also utilized as fishmeal and a source of oil (Ref. 9283).
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Distribution

Range Description

This species is present in the eastern Pacific from southern California to the Gulf of California to northern Peru, and the Revillagigedos, Galapagos, Cocos, and Malpelo islands.
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Zoogeography

See Map (including site records) of Distribution in the Tropical Eastern Pacific 
 
Global Endemism: All species, East Pacific endemic, Tropical Eastern Pacific (TEP) endemic

Regional Endemism: All species, TEP endemic, Continent + Island (s), Continent, Island (s)

Residency: Resident

Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California), Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos), Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo), South Temperate (Peruvian Province )
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Eastern Pacific: San Diego, California, USA to Peru, including the Gulf of California and the Galapagos Islands. Probably the same species as Caranx hippos in the Atlantic.
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Eastern Pacific: southern California to Peru.
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Depth

Depth Range (m): 3 (S) - 350 (S)
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Physical Description

Morphology

Size

Length max (cm): 100.0 (S)
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Size

Maximum size: 1000 mm TL
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Max. size

101 cm FL (male/unsexed; (Ref. 40637)); max. published weight: 17.7 kg (Ref. 40637)
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Diagnostic Description

Body deep, elongated and slightly compressed; eye with an adipose eyelid; posterior edge of lower jaw behind posterior edge of eye; chest mostly scaleless, just a small patch in front of pectoral fins; 35 to 42 strong scutes; back of body blue to blue black; belly white, silvery, or yellow; pectoral fins and operculum each with a black spot (Ref. 55763).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This pelagic oceanodromous species occurs in oceanic and coastal waters, commonly found in shallow water, with larger individuals up to 100 m depth (Smith-Vaniz 1995). Also found in brackish water and occasionally ascends rivers (Smith-Vaniz 1995). Forms medium to large-sized schools, but large adults may be solitary. Juveniles are often found in river estuaries. It feeds mainly on fishes, but also takes shrimps and other invertebrates. This species has been observed in rocky reef in Cano Island, Costa Rica (Molina pers. comm.).

Systems
  • Marine
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Environment

pelagic-oceanic; oceanodromous (Ref. 51243); brackish; marine; depth range ? - 350 m (Ref. 9283)
  • Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)   http://www.fishbase.org/references/FBRefSummary.php?id=51243&speccode=4683 External link.
  • Smith-Vaniz, W.F. 1995 Carangidae. Jureles, pámpanos, cojinúas, zapateros, cocineros, casabes, macarelas, chicharros, jorobados, medregales, pez pilota. p. 940-986. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9283)   http://www.fishbase.org/references/FBRefSummary.php?id=9283&speccode=367 External link.
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Depth range based on 34 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 0.18 - 154
  Temperature range (°C): 23.233 - 23.233
  Nitrate (umol/L): 4.634 - 4.634
  Salinity (PPS): 34.347 - 34.347
  Oxygen (ml/l): 4.635 - 4.635
  Phosphate (umol/l): 0.643 - 0.643
  Silicate (umol/l): 4.346 - 4.346

Graphical representation

Depth range (m): 0.18 - 154
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 0 - 350m.
Recorded at 350 meters.

Habitat: pelagic. Occurs in oceanic and coastal waters. Forms medium-sized to big schools. Found in shallow waters and to a depth of 350 m. Large adults sometimes solitary. Also found in brackish waters and may swim up rivers (Ref. 9283). Juveniles are often found in estuaries and rivers. Feeds mostly on other fishes, but also on shrimps and other invertebrates. Often makes a grunting sound when captured. Marketed fresh, frozen, smoked and salted/dried. May also be utilized as fishmeal. Oil may be extracted.
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Salinity: Marine, Brackish, Freshwater

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Mid Water, Near Bottom, Bottom, Bottom + water column

Habitat: Soft bottom (mud, sand,gravel, beach, estuary & mangrove), Sand & gravel, Estuary, Water column

FishBase Habitat: Pelagic
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Migration

Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.
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Trophic Strategy

Feeding

Feeding Group: Carnivore

Diet: mobile benthic crustacea (shrimps/crabs), bony fishes
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Life History and Behavior

Reproduction

Egg Type: Pelagic, Pelagic larva
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Caranx caninus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 10
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Smith-Vaniz, B., Robertson, R., Bussing, W. & Molina, H.

Reviewer/s
Carpenter, K., Polidoro, B. & Livingstone, S. (Global Marine Species Assessment Team)

Contributor/s

Justification
This species is widespread in the tropical eastern Pacific. There are no major threats to this species, and no current indication of widespread population decline. It is listed as Least Concern.
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IUCN Red List: Not evaluated / Listed

CITES: Not listed
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Population

Population
There is no population information available for this species. This species may be common.

Population Trend
Unknown
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Threats

Major Threats
There are no known major threats to this species.
This species is fished in sport fisheries by hook and line, and is a targeted artisanal fish. This species is an important commercial fish in Golfo de Montijo, Panama (Vega 2004). It is marketed fresh, frozen, smoked and salted or dried (Smith-Vaniz 1995).
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There are no known species specific conservation measures. However, this species' distribution includes a number of Marine Protected Areas in the tropical eastern Pacific region.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial; gamefish: yes
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Wikipedia

Pacific crevalle jack

The Pacific crevalle jack, Caranx caninus, is a species of large marine fish classified in the jack family Carangidae. The species is distributed through the tropical waters of the eastern Pacific Ocean from California in the north to Peru in the south, including several offshore islands. The species is best identified by its deep body and mostly unscaled breast, as well as other more detailed anatomical features. The species is known to grow to a maximum length of 101 cm and a weight of 19.7 kg. Disagreement on the status of the species has been significant in the scientific literature, with many claiming it to be conspecific with or subspecific to the Atlantic Caranx hippos (crevalle jack). The most recent review of the crevalle jacks strongly concluded it to be a separate species based on the development of hyperostosis and fin colouring. It is predominantly a schooling inshore species, inhabiting sandy and rocky substrates, although larger individuals are occasionally found living pelagically to depths of 350 m. The Pacific crevalle jack is a fast-swimming predator, taking a variety of fish, crustaceans, and other small invertebrates. Spawning is thought to occur year-round, although peaks occur during November and May. The Pacific crevalle jack is an important species to commercial fisheries, with data available from Colima in Mexico indicating it accounts for up to 15% of the entire yearly catch. Pacific crevalle jack are highly rated gamefish, taken by both bait and a variety of lures, but are considered relatively poor quality food.

Taxonomy and naming[edit]

The Pacific crevalle jack is classified within the genus Caranx, one of a number of groups known as the jacks or trevallies. Caranx itself is part of the larger jack and horse mackerel family Carangidae, a group of percoid fishes in the order Perciformes.[1] The species is part of what William Smith-Vaniz and Kent Carpenter term the Caranx hippos species complex, a group of three closely related and anatomically similar species, which also includes Caranx hippos (Crevalle jack) and Caranx fischeri (Longfin crevalle jack).[2]

The species was first properly scientifically described by the British zoologist Albert Günther in 1867 based on a specimen taken from Panama, which was designated to be the holotype.[3] He named the species Caranx caninus, with the specific epithet meaning 'dog like'. Apart from disagreements pertaining to the possible conspecificity of the species with Caranx hippos, the taxonomy has been very stable, with not one independent redescription and naming. There has, however, been considerable debate in the past as to whether the Pacific crevalle jack is the same species as its Atlantic counterpart, Caranx hippos. To this end it has previously been referred to as C. hippos, and John Nichols argued it was a subspecies, creating the trinomial name Caranx hippos caninus.[4] Yoshio Hiyama also referred the species to a subgenus he created; Tricropterus, creating the name Caranx (Tricropterus) hippos, which is now considered invalid. The most recent review of the species by Smith-Vaniz and Carpenter treated the fish as a separate species, citing differences in the development of hyperostosis and differing anal fin colours as evidence of different species.[2] The species is commonly referred to as the 'Pacific crevalle jack' or 'Pacific jack crevalle' due to its close appearance to the Atlantic 'crevalle jack', as well as a variety of Spanish names.[5]

Description[edit]

The Pacific crevalle jack is distinguished by yellow anal and caudal fins

The Pacific crevalle jack is a relatively large fish, growing to a maximum recorded size of 101.6 cm in length and 19.7 kg in weight.[2] It is similar to most other jacks of the genus Caranx, having a moderately deep and compressed, oblong body, with the dorsal profile more convex than the ventral profile, particularly anteriorly.[6] The dorsal fin is in two distinct sections; the first consisting of eight spine and the second of one spine and 19 to 21 soft rays. The anal fin consists of two anteriorly detached spines followed by one spine and 16 to 17 soft rays.[7] The pectoral fins are falcate, and consist of 19 to 21 soft rays, while the caudal fin is strongly forked.[2] The species lateral line is moderately arched anteriorly, with 58 to 79 scales in this section, while the straight section contains none to seven scales and 34 to 43 strong scutes.[2] The breast is devoid of scales with the exception of a small patch of scales in front of the pelvic fins. The species has well-developed adipose eyelids, while its dentition consists of an outer row of widely spaced canine teeth and an inner band of villiform teeth in the upper jaw, with a row of widely spaced conical teeth on the lower jaw. The Pacific crevalle jack has 21 to 27 gill rakers and 24 vertebrae.[6] There are significant differences in the development of hyperostosis between this species and C. hippos.[2]

The Pacific crevalle jack is a bluish-green to bluish-black dorsally, fading to a silvery white or golden shade ventrally.[7] Juveniles are generally lighter in colour, also possessing five dark vertical bars on their sides. The fins are all white dusky with the exception of the anal fin and lower caudal fin lobe, which are white to brownish orange, with the ventral surface of the caudal peduncle also this colour. This contrasts to the bright lemon yellow anal and lower caudal fins of C. hippos.[2] The Pacific crevalle jack also has a black spot on the base of its pectoral fins, as well as a dark blotch on the margin of the operculum.[6]

Distribution and habitat[edit]

The Pacific crevalle jack inhabits the tropical to subtropical waters of the eastern Pacific Ocean.[7] The species ranges along the western American coastline from Lobos de Tierra Island, Peru[6] in the south and north to San Diego Bay, California. The species is generally rare north of the Gulf of California,[8] however El Nino events which bring warm tropical waters further north than usual transport Pacific crevalle jack and other species beyond their normal range.[9] All occurrences of the species in San Diego Bay have been attributed El Nino events in that year.[9] The species is also known from several offshore Pacific islands including the Galapogos, Malpelo, Cocos, and Revillagigedo Islands.[2]

The Pacific crevalle jack is most common in coastal regions, although is occasionally found in more pelagic settings, with the species not known to live deeper than 350 m.[6] In coastal waters the species prefers sandy and rocky substrates,[10] including protected bays, lagoons[11] and harbours, where large schools of the species form.[12] Larger individuals are often solitary, and living in deeper offshore environments.[6] Pacific crevalle jack are also common in estuaries, usually as juveniles which preferentially inhabit these environments, but also as adults that make their way into brackish waters and tidal streams.[2][6] Juveniles are known to penetrate well upstream, indicating a wide salinity tolerance.[12]

Biology[edit]

A Pacific crevalle jack taken by an angler off Baja California

The Pacific crevalle jack is a schooling fish for much of its life, forming moderate to large aggregations that can move quite rapidly.[6] Older fish tend to be more solitary, moving offshore to greater depths. It is one of the most abundant pelagic species throughout its range, making it both ecologically and economically important.[13] The species is a strong, fast swimming predator that takes predominantly small fish, as well as crustaceans such as prawns and various other benthic invertebrates,[10] although no detailed data on diet has been collected.

Individuals begin reaching sexual maturity at 67 cm in males and 65 cm in females, with reproduction thought to occur year round.[14] There are peaks in spawning activity however, with these peaks reported as January–February and August in Colombia[14] and May and November in Mexico.[15] The eggs are pelagic, as are the newly hatched larvae.[16] Several studies on yearly growth in the species have given slightly different results, although the maximum difference between these studies is 5 cm per year.[15][17] After the first year, the species is 19.02 to 20.64 cm long, after the second it is 29.86 to 32.95 cm, and its is 36.8 to 42.44 cm long after the third year.[15] According to the von Bertalanffy growth equations that govern the species growth, the species may live as long as 12 or 15 years,[15] or even 37 years as calculated in one study.[18] These growth equations are generated using the fish's otoliths, which add annual growth rings.[17] These also show yearly periods of slow and fast growth, with August to February having the fastest growth due to the rainy season providing increased runoff and nutrients to the coast. Slowest growth occurs during March to August, although one of the main spawning peaks occurs during this period.[15]

Relationship to humans[edit]

The Pacific crevalle jack is of high importance to fisheries throughout its range, with the abundance of the species allowing for large catches by commercial fishermen.[6] Due to the artisanal nature of many Central American fisheries, detailed catch statistics of the species are not kept, making it impossible to estimate total annual catches. Where these statistics are kept, however, it is apparent that it is one of the most important species in its range, with the species accounting for up to 15% of the total annual catch in Colima, Mexico.[15] This translates as around 76 tonnes on average, just for the state of Colima.[17] The species is taken year round by a variety of methods including trawling, fence and fixed nets, as well as hook and line methods. It is sold at market either fresh, frozen, smoked, salted or dried, and is also utilized as a source of fishmeal and oil.[6] Despite the large numbers taken, the Pacific crevalle jack is considered a second or third class commercial product, fetching fairly low prices at market. The value of the fish does change throughout its range based on local opinion of the fish.[15]

The Pacific crevalle jack is also a major target for anglers throughout its range, and can be taken by live bait as well as various lure types including surface poppers and fast retrieved metal slugs and spoons.[19] It is generally viewed as marginal table fair, although bleeding the fish immediately after capture is said to improve the flavor.[6]

References[edit]

  1. ^ "Caranx caninus". Integrated Taxonomic Information System. Retrieved 16 April 2009. 
  2. ^ a b c d e f g h i Smith-Vaniz, W.F.; K.E. Carpenter (2007). "Review of the crevalle jacks, Caranx hippos complex (Teleostei: Carangidae), with a description of a new species from West Africa". Fisheries Bulletin 105 (4): 207–233. Retrieved 2009-04-07. 
  3. ^ California Academy of Sciences: Ichthyology (February 2009). "Caranx caninus". Catalog of Fishes. CAS. Retrieved 2009-05-16. 
  4. ^ Nichols, J.T. (1937). "On Caranx hippos (Linnaeus) from Ecuador". Copeia 1937 (1): 58–59. doi:10.2307/1437371. ISSN 0045-8511. JSTOR 1437371. 
  5. ^ Froese, Rainer and Pauly, Daniel, eds. (2009). "Caranx caninus" in FishBase. May 2009 version.
  6. ^ a b c d e f g h i j k Fischer, W.; Krupp F., Schneider W., Sommer C., Carpenter K.E. & Niem V.H. (1995). Guía FAO para la identificación de especies para los fines de la pesca. Pacífico centro-oriental. Volumen II. Vertebrados - Parte 1.. Rome: FAO. p. 953. ISBN 92-5-303409-2. 
  7. ^ a b c Allen, G.R.; D.R. Robertson (1994). Fishes of the tropical eastern Pacific. University of Hawaii Press. p. 332. ISBN 978-0-8248-1675-9. 
  8. ^ Lea, R.N.; H.J. Walker (1995). "Record of the bigeye trevally, Caranx sexfasciatus, and Mexican lookdown, Selene brevoorti, with notes on other carangids from California". California Fish and Game 81 (3): 89–95. ISSN 0008-1078. 
  9. ^ a b Miller, E.F.; M.D. Curtis (2008). "First Occurrence of A Pacific Crevalle Jack, Caranx caninus, North of San Diego, California". Bulletin of the Southern California Academy of Sciences 107 (1): 41–43. doi:10.3160/0038-3872(2008)107[41:FOOAPC]2.0.CO;2. ISSN 0038-3872. 
  10. ^ a b Grove, Jack S.; Robert J. Lavenberg (1997). The Fishes of the Galápagos Islands. California: Stanford University Press. p. 376. ISBN 978-0-8047-2289-6. 
  11. ^ Guadalupe Cabral-Solis, E.; E. Espino-Barr (2004). "Distribucion y abundancia espacio-temporal de los peces en la Laguna de Cuyutlan, Colima, Mexico". Oceanides 19 (1–2): 19–27. ISSN 1560-8433. 
  12. ^ a b Schultz, K. (2003). Ken Schultz's field guide to saltwater fish. John Wiley and Sons. p. 274. ISBN 978-0-471-44995-9. 
  13. ^ Madrid, J.; P. Sánchez & A. Ruiz (1997). "Diversity and Abundance of a Tropical Fishery on the Pacific Shelf of Michoacán, México". Estuarine, Coastal and Shelf Science 45 (4): 485–495. doi:10.1006/ecss.1996.0219. 
  14. ^ a b Franke, R.; P.A. Acero (1993). "Peces Carangoideos del Parque Gorgona, Pacifico Colombiano (Osteichthyes: Carangidae, Nematistiidae y Coryphaenidae)". Revista de Biología Marina y Oceanografía 28 (1): 51–73. ISSN 0717-3326. 
  15. ^ a b c d e f g Espino Barr, E.; M.G. Cabello, E.G. Cabral Solís, A.G. Boa & M.P. Gómez (2008). "Growth of the Pacific jack Caranx caninus (Pisces: Carangidae) from the coast of Colima, México". Revista de Biologia Tropical 56 (1): 171–179. PMID 18624235. Retrieved 2009-01-20. 
  16. ^ Smithsonian Tropical Research Institute (2009). "Caranx caninus". Shorefishes or the Tropical Eastern Pacific Online Information System. Retrieved 2009-15-20. 
  17. ^ a b c Espino Barr, E.; M.G. Cabello, E.G. Cabral Solís, A.G. Boa & M.P. Gómez (2006). "Morphologic and morphometric analysis and growth rings identification of otoliths: sagitta, asteriscus and lapillus of Caranx caninus (Pisces: Carangidae) in the coast of Colima, Mexico". Journalof Fisheries and Aquatic Science 1 (2): 157–170. doi:10.3923/jfas.2006.157.170. ISSN 1816-4927. 
  18. ^ Torres-Aguilar, M. (2002). Estudio preliminar de edad y crecimiento del jurel, Caranx caninus (Günther, 1867), con base en vértebras y espinas, en las costas de Guerrero y Michoac. M.Sc. Thesis. UNAM, Mexico. 
  19. ^ Ristori, Al (2002). Complete Guide to Saltwater Fishing. Woods N' Water, Inc. p. 59. ISBN 0-9707493-5-X. 
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