dcsimg

Morphology ( Anglèis )

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Dorsal spines (total): 9; Dorsal soft rays (total): 24 - 26; Analspines: 3; Analsoft rays: 22 - 24
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Rodolfo B. Reyes
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Diagnostic Description ( Anglèis )

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Description: Brassy dorsally, shading to yellowish on sides and silvery ventrally with numerous orange or orange-yellow spots scattered on sides; capable of rapidly changing color to almost entirely yellow or orange. Body oblong and compressed, dorsal profile more convex than ventral profile. Breast completely scaled or with narrow scaleless area anteroventrally. (Ref 559, 90102) LL scutes 20-30. Teeth widest anteriorly (Ref. 90102). Tip of the upper jaw on a level with the lower margin of the eye. Attains 40 cm in SL (Ref. 559).
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Biology ( Anglèis )

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Adults are common along coastal reef slopes or around large coral heads in lagoons (Ref. 48635). A xanthic form often seen in muddy bays mixes in schools (Ref. 48635). Juveniles solitary in sheltered coastal basys (Ref. 48635).
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Importance ( Anglèis )

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fisheries: commercial; gamefish: yes
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分布 ( Anglèis )

fornì da The Fish Database of Taiwan
分布於印度-西太平洋區,西起紅海,東至菲律賓,北迄日本,南到澳洲。台灣僅發現於東沙島海域。
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利用 ( Anglèis )

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主要漁法以延繩釣、一支釣、流刺網捕獲。清蒸或紅燒皆宜。
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描述 ( Anglèis )

fornì da The Fish Database of Taiwan
體呈橢圓形,甚側扁而高。幼魚時背、腹部輪廓相當,隨著成長頭背輪廓中度彎曲而無腫塊凸突。吻圓。胸部裸露區,僅於腹部中線。背鰭軟條數24-26;臀鰭21-24;鰓耙數(含瘤狀鰓耙)7-9+18-21;稜鱗數20-30。第二背鰭與臀鰭同形。體黃色,體側散布許多橘色點。
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棲地 ( Anglèis )

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主要棲息於沿岸礁坡,或潟湖之礁區,通常三、兩成群游動於表層水域,或成群於岸邊沙灘。主要以蝦子、橈腳類、十腳類等甲殼類動物為食。
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Carangoides bajad ( Catalan; Valensian )

fornì da wikipedia CA
 src=
Carangoides bajad

Carangoides bajad és un peix teleosti de la família dels caràngids i de l'ordre dels perciformes.[2]

Morfologia

Pot arribar als 55 cm de llargària total.[3]

Distribució geogràfica

Es troba des de les costes del Mar Roig, del Golf d'Aden, del Golf Pèrsic i del Golf d'Oman fins a les d'Indonèsia, del Golf de Siam, de les Filipines i d'Okinawa.[3]

Referències

  1. MarineSpecies.org (anglès)
  2. The Taxonomicon (anglès)
  3. 3,0 3,1 FishBase (anglès)

Bibliografia

  • Moyle, P. i J. Cech.: Fishes: An Introduction to Ichthyology, 4a edició, Upper Saddle River (Nova Jersey, Estats Units): Prentice-Hall. Any 2000.
  • Nelson, J.: Fishes of the World, 3a edició. Nova York, Estats Units: John Wiley and Sons. Any 1994.
  • Wheeler, A.: The World Encyclopedia of Fishes, 2a edició, Londres: Macdonald. Any 1985.

Enllaços externs

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Carangoides bajad: Brief Summary ( Catalan; Valensian )

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 src= Carangoides bajad

Carangoides bajad és un peix teleosti de la família dels caràngids i de l'ordre dels perciformes.

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Orange-spotted trevally ( Anglèis )

fornì da wikipedia EN

The orange-spotted trevally, Carangoides bajad (also known as the gold-spotted trevally) is a species of inshore marine fish in the jack family, Carangidae. The species is fairly common in tropical to subtropical waters of the Indo-Pacific, ranging from Madagascar in the west to Japan in the east, typically inhabiting inshore reefs. The species has characteristic orange-yellow spots on its sides, although counts of fin rays and scutes are needed to distinguish it from related species with similar colouring. Orange-spotted trevallies are powerful predators, taking a variety of small fish, nekton, and crustaceans, and reach sexual maturity around 25 cm long. It is a moderately large fish, reaching a maximum known length of 55 cm. The species is occasionally taken by fishermen throughout its range, and is generally considered to be bycatch. The exception to this is in the southern Persian Gulf, where it makes up a large proportion of the fishery.

Taxonomy and naming

The orange-spotted trevally is classified within the genus Carangoides, a group of fish commonly called jacks and trevallies. Carangoides falls into the jack and horse mackerel family Carangidae, the Carangidae are part of the order Carangiformes.[2]

The species was first scientifically described by the Swedish naturalist Peter Forsskål in 1775 based on a specimen taken from the Red Sea which he designated to be the holotype.[3] The specific epithet is an Arabic name of the fish (although it is now usually applied to a catfish, Bagrus bajad, which Forsskål also named), with the letter "j" transcribing a /j/ sound; Forsskål used this technique to name a number of Red Sea fish species.[4] Forsskål at first gave the new taxon subspecies status as Scomber ferdau bajad, relating it to the mackerels, and especially Scomber ferdau, which would later also be transferred to Carangoides. The taxon was later given a species rank, becoming Scomber bajad, then Caranx bajad, before being transferred to its current position as Carangoides bajad.[5]

The species was also independently renamed three times after Forsskål's description, the first coming from Christian Gottfried Ehrenberg, who named the species Caranx immaculatus, although he did not accurately publish the name, leading Georges Cuvier to rename the fish as Caranx auroguttatus in 1833, which was later transferred to Carangoides. In 1871, Carl Benjamin Klunzinger once again proposed a new subspecies (or variety) name for the fish, Caranx fulvoguttatus var. flava.[5] All names except Carangoides bajad are considered to be junior synonyms under the ICZN rules, and are rendered invalid and not used.

Description

An orange-yellow orange-spotted trevally in Egypt

The orange-spotted trevally has the typical body profile of its genus, having a moderately deep, compressed oblong shape, with the dorsal profile more convex than the ventral profile. It is a moderately large fish, with adults typically reaching a size of 45–60 cm.[6] The largest fish recorded was 72 cm, but are most common at sizes below 40 cm.[7][6] The dorsal profile of the head is quite straight from the snout to the nape, with an eye diameter smaller than the snout length. Both jaws contain narrow bands of villiform teeth, with these bands becoming wider anteriorly. The dorsal fin is in two parts, the first containing eight spines and the second of one spine followed by 24 to 26 soft rays.[8] The anal fin is similar to the second dorsal fin, although slightly shorter, and consists of two anteriorly detached spines followed by one spine and 21 to 24 soft rays. Another of the major diagnostic features for the species is the length of the anal fin lobe in comparison to the head length, with C. bajad having a head length longer than the anal fin lobe.[8] The lateral line has a slight, broad anterior curve, with this curved section being longer than the posterior straight section. The straight section of the lateral line has 14 to 26 scales followed by 20 to 30 scutes.[9] The chest of the orange-spotted trevally is completely scaled, occasionally having a narrow naked region on the underside near the ventral fins. It has 24 vertebrae and 25 to 43 gill rakers.[8]

The orange-spotted trevally has a silvery grey- to brassy-coloured body, becoming paler to a silvery white ventrally. Many conspicuous orange to yellow spots occur on the sides of the fish, giving the species its name, and make for an easy way to identify the fish in the field.[8] An entirely yellow variant has been reported,[10] although the fish is thought to be able to rapidly change between its normal colour configuration and this colour.[8] The colour of the fins ranges from hyaline to lemon yellow, and no dark opercular spot is present.[3]

Distribution and habitat

Group of orange-spotted trevallies in the red Sea, Egypt

The orange-spotted trevally inhabits the tropical to subtropical waters of the Indian and western Pacific Oceans. It is distributed from Madagascar and the Comoros Islands in the west,[11] northwards to the Red Sea, the Gulf of Aden, and the Persian Gulf, and probably east toward India, although few fish have been recorded in this region.[5] It is commonly found from the Gulf of Thailand to Okinawa, Japan in the east, and southward to Indonesia, the Philippines, and New Britain.[8] In 2005, orange-spotted trevally reportedly had been caught in the Mediterranean Sea, indicating they had become Lessepsian migrants, passing through the Suez Canal to extend their range.[12] This claim has been disputed, though, with the source of the report coming under question due to the presence of other species unknown to the Mediterranean shown in the purported photograph.[13]

The orange-spotted trevally is a coastal species, most common in inshore waters over rocky and coral reefs, where it is found both solitary and in schools at depths of 2 to 50 m. They are often observed patrolling the edges of seaward reefs, and have been known to mingle with Parupeneus cyclostomus.[14]

Biology and fisheries

The orange-spotted trevally is a strong-swimming predator that takes a variety of prey, including fish, crustaceans, and nekton.[15] They reach sexual maturity around 1–3 years of age when they are about 15–30 cm in length.[6][11] The main spawning period in the Persian Gulf is between June and September.[6] Whether further differences in the spawning period occurs throughout its range is currently unknown. This species also exhibits seasonal oscillation in growth rate, which was fastest during November–April and slowest during May–September.[11]

The orange-spotted trevally is occasionally taken throughout its range by hook and line, gill nets, and other artisanal gear, although in most areas it is bycatch and does not form a large part of these fisheries.[8] One fishery is highly dependent on the species in the southern Persian Gulf. There, the orange-spotted trevally is one of the most common fish found just above the sea floor, and is taken by wire traps and sold fresh at local markets. The combined catch of C. bajad and Gnathanodon speciosus totals around 1100 tonnes per year.[16] The development of the fishing fleet of the United Arab Emirates has caused a number of species to be overexploited, but the orange-spotted trevally is still being taken at sustainable levels.[16]

References

  1. ^ Smith-Vaniz, W.F. & Williams, I. (2017) [errata version of 2016 assessment]. "Carangoides bajad". IUCN Red List of Threatened Species. 2016: e.T46080857A115391273. doi:10.2305/IUCN.UK.2016-3.RLTS.T46080857A46664509.en. Retrieved 19 February 2022.
  2. ^ J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 380–387. ISBN 978-1-118-34233-6.
  3. ^ a b Ludwig, Albert Carl; Gotthilf Günther (1860). Catalogue of the Fishes in the British Museum. British Museum (Natural History). Dept. of Zoology. p. 238.
  4. ^ Baheyeldin, Khalid (October 17, 2004). "Forsskål's use of Arabic names for fish species". The Baheyeldin dynasty.
  5. ^ a b c Froese, Rainer; Pauly, Daniel (eds.) (2008). "Carangoides bajad" in FishBase. January 2008 version.
  6. ^ a b c d Lin, Yu‐Jia; Rabaoui, Lotfi; Maneja, Rommel H.; Qurban, Mohammad A.; Abdulkader, Khaled; Al‐Nazry, Hussain; Roa‐Ureta, Ruben H. (2019). "Life history traits and temporal trends of abundance of the orange‐spotted trevally ( Carangoides bajad ) from Saudi waters of the Gulf". Journal of Fish Biology. 95 (5): 1184–1194. doi:10.1111/jfb.14116. ISSN 0022-1112. PMID 31389013.
  7. ^ Randall, John E. (1995). Coastal Fishes of Oman. Honolulu: University of Hawaiʻi Press. p. 183. ISBN 0-8248-1808-3.
  8. ^ a b c d e f g Carpenter, Kent E.; Volker H. Niem, eds. (1999). FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4: Bony fishes part 2 (Mugilidae to Carangidae) (PDF). Rome: Food and Agriculture Organization of the United Nations. p. 2694. ISBN 92-5-104587-9.
  9. ^ Lin, Pai-Lei; Shao, Kwang-Tsao (May 15, 1999). "A Review of the Carangid Fishes (Family Carangidae) From Taiwan with Descriptions of Four New Records". Zoological Studies. 38 (1): 33–68.
  10. ^ Myers, R.F.; Lieske, E. (2004). Coral Reef Guide Red Sea. London: Collins. ISBN 978-0-00-715986-4.
  11. ^ a b c Grandcourt, E.M.; T.Z. Al Abdessalaam; F. Francis; A. Al Shamsi (2004). "Population biology and assessment of representatives of the family Carangidae Carangoides bajad and Gnathanodon speciosus (Forsskal, 1775), in the Southern Arabian Gulf". Fisheries Research. 69 (3): 331–341. doi:10.1016/j.fishres.2004.06.008.
  12. ^ Öztürk, Bayrum, ed. (2005). Marine Life of Turkey in the Aegean and Mediterranean Seas. Istanbul: Turkish Marine Research Foundation (TÜDAV). ISBN 975-8825-07-0.
  13. ^ Golani, Daniel (2006). "The Indian scad (Decapterus russelli), (Osteichthyes: Carangidae), a new Indo-Pacific fish invader of the eastern Mediterranean". Scientia Marina. 70 (4): 603–605. doi:10.3989/scimar.2006.70n4603. ISSN 0214-8358.
  14. ^ Siliotti, A. (2002). Fishes of the Red Sea. Verona: Geodia. p. 287. ISBN 88-87177-42-2.
  15. ^ Blaber, S.J.M.; Milton, D.A.; Rawlinson, N.J.F.; Tiroba, G.; Nichols, P.V. (1990). "Diets of lagoon fishes of the Solomon Islands: predators of tuna baitfish and trophic effects of baitfishing on the subsistence fishery". Fisheries Research. 8 (3): 263–286. doi:10.1016/0165-7836(90)90027-S.
  16. ^ a b Grandcourt, E.; T.Z. Al Abdessalaam; F. Francis; A.T. Al Shamsi; K. Al Ali; S. Al Ali (2004). Biological reference points, resource status and management options for the key demersal species of Abu Dhabi Emirate (PDF). Environmental Research and Wildlife Development. pp. 1–28.

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Orange-spotted trevally: Brief Summary ( Anglèis )

fornì da wikipedia EN

The orange-spotted trevally, Carangoides bajad (also known as the gold-spotted trevally) is a species of inshore marine fish in the jack family, Carangidae. The species is fairly common in tropical to subtropical waters of the Indo-Pacific, ranging from Madagascar in the west to Japan in the east, typically inhabiting inshore reefs. The species has characteristic orange-yellow spots on its sides, although counts of fin rays and scutes are needed to distinguish it from related species with similar colouring. Orange-spotted trevallies are powerful predators, taking a variety of small fish, nekton, and crustaceans, and reach sexual maturity around 25 cm long. It is a moderately large fish, reaching a maximum known length of 55 cm. The species is occasionally taken by fishermen throughout its range, and is generally considered to be bycatch. The exception to this is in the southern Persian Gulf, where it makes up a large proportion of the fishery.

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Carangoides bajad ( Spagneul; Castilian )

fornì da wikipedia ES

Carangoides bajad es una especie de peces de la familia Carangidae en el orden de los Perciformes.

Morfología

• Los machos pueden llegar alcanzar los 55 cm de longitud total.[1]

Distribución geográfica

Se encuentra desde las costas del Mar Rojo, del Golfo de Adén, del Golfo Pérsico y del Golfo de Omán hasta las de Indonesia, del Golfo de Siam, de las Filipinas y de Okinawa.

Referencias

  1. FishBase (en inglés)

Bibliografía

  • Eschmeyer, William N., ed. 1998. Catalog of Fishes. Special Publication of the Center for Biodiversity Research and Information, núm. 1, vol. 1-3. California Academy of Sciences. San Francisco, California, Estados Unidos. 2905. ISBN 0-940228-47-5.
  • Fenner, Robert M.: The Conscientious Marine Aquarist. Neptune City, Nueva Jersey, Estados Unidos : T.F.H. Publications, 2001.
  • Helfman, G., B. Collette y D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts, Estados Unidos , 1997.
  • Hoese, D.F. 1986: . A M.M. Smith y P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlín, Alemania.
  • Maugé, L.A. 1986. A J. Daget, J.-P. Gosse y D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB Bruselas; MRAC, Tervuren, Flandes; y ORSTOM, París, Francia. Vol. 2.
  • Moyle, P. y J. Cech.: Fishes: An Introduction to Ichthyology, 4a. edición, Upper Saddle River, Nueva Jersey, Estados Unidos: Prentice-Hall. Año 2000.
  • Nelson, J.: Fishes of the World, 3a. edición. Nueva York, Estados Unidos: John Wiley and Sons. Año 1994.
  • Wheeler, A.: The World Encyclopedia of Fishes, 2a. edición, Londres: Macdonald. Año 1985.

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Carangoides bajad: Brief Summary ( Spagneul; Castilian )

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Carangoides bajad es una especie de peces de la familia Carangidae en el orden de los Perciformes.

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Carangoides bajad ( Basch )

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Carangoides bajad Carangoides generoko animalia da. Arrainen barruko Carangidae familian sailkatzen da.

Banaketa

Erreferentziak

  1. Froese, Rainer & Pauly, Daniel ed. (2006), Carangoides bajad FishBase webgunean. 2006ko apirilaren bertsioa.

Ikus, gainera

(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Carangoides bajad: Brief Summary ( Basch )

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Carangoides bajad Carangoides generoko animalia da. Arrainen barruko Carangidae familian sailkatzen da.

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Carangoides bajad ( Fransèis )

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Carangue à points orange

Carangoides bajad, communément appelé Carangue à points orange, est une espèce de poisson marin démersale de la famille des Carangidae qui se rencontre dans les eaux tropicales de l'Indo/ouest Pacifique, Mer Rouge incluse[2]. Il vit dans les récifs coralliens entre 3 et 50 mètres de profondeur.

Étymologie

Son nom spécifique, bajad, est la reprise de son nom vernaculaire arabe[3].

Description

Sa taille maximale est de 55 cm mais la taille moyenne couramment observée est de 42 cm[4]. Il est reconnaissable à sa belle livrée plus ou moins tachetée d'or[5].

 src=
Carangue à points orange très légèrement tacheté d'or, île de Ko Tao, Thaïlande

Notes et références

  1. Integrated Taxonomic Information System (ITIS), www.itis.gov, CC0 https://doi.org/10.5066/F7KH0KBK, consulté le 4 juin 2013
  2. http://eol.org/pages/224448/details#distribution
  3. Etyfish, consulté le 30 décembre 2019
  4. « Carangoides bajad summary page », sur FishBase (consulté le 27 août 2020).
  5. Andrea et Antonella Ferrari (trad. de l'italien par Dominique Le Bouteiller Johnson), Guide des récifs coralliens : la faune sous-marine des corauxBarriere corraline »], Paris, Delachaux et Niestlé, coll. « Les compagnons du naturaliste », 2000 (1re éd. 1999), 288 p. (ISBN 2603011936), p. Carangue à points orange page 39

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Carangoides bajad: Brief Summary ( Fransèis )

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Carangue à points orange

Carangoides bajad, communément appelé Carangue à points orange, est une espèce de poisson marin démersale de la famille des Carangidae qui se rencontre dans les eaux tropicales de l'Indo/ouest Pacifique, Mer Rouge incluse. Il vit dans les récifs coralliens entre 3 et 50 mètres de profondeur.

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Carangoides bajad ( olandèis; flamand )

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Vissen

Carangoides bajad is een straalvinnige vissensoort uit de familie van horsmakrelen (Carangidae).[2] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1775 door Forsskål.

Bronnen, noten en/of referenties
  1. (en) Carangoides bajad op de IUCN Red List of Threatened Species.
  2. (en) Carangoides bajad. FishBase. Ed. Ranier Froese and Daniel Pauly. 10 2011 version. N.p.: FishBase, 2011.
Geplaatst op:
22-10-2011
Dit artikel is een beginnetje over biologie. U wordt uitgenodigd om op bewerken te klikken om uw kennis aan dit artikel toe te voegen. Beginnetje
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Carangoides bajad ( portughèis )

fornì da wikipedia PT

Carangoides bajad é uma espécie de peixe marinho costeiro da família Carangidae.[1] A espécie é bastante comum em águas tropicais e subtropicais do Indo-Pacífico, indo do Madagascar, no oeste, ao Japão, no leste, tipicamente habitando recifes próximos à costa. A espécie tem características manchas amarelo-alaranjadas em seus lados, embora grandes barbatanas semelhantes a asas e escamas quitinosas deverão ser levadas em conta para distinguir-lo de espécies relacionadas com coloração semelhante. São predadores poderosos, caçando uma variedade de peixes pequenos, nécton e crustáceos. É um peixe moderadamente grande, alcançando um comprimento máximo de 55 cm, ao redor de 25 cm alcançam a maturidade sexual. A espécie é ocasionalmente capturada por pescadores ao longo de seu alcance, sem querê-lo durante a pesca. A exceção a isto está na zona meridional do Golfo Pérsico, onde ele compõe uma grande proporção da pescaria.

Referências

  1. a b Smith-Vaniz, W.F. & Williams, I. (2016). Carangoides bajad (em inglês). IUCN 2016. Lista Vermelha de Espécies Ameaçadas da IUCN de 2016 Versão e.T46080857A115391273. doi:10.2305/IUCN.UK.2016-3.RLTS.T46080857A46664509.en Página visitada em 28 de outubro de 2021.
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Carangoides bajad: Brief Summary ( portughèis )

fornì da wikipedia PT

Carangoides bajad é uma espécie de peixe marinho costeiro da família Carangidae. A espécie é bastante comum em águas tropicais e subtropicais do Indo-Pacífico, indo do Madagascar, no oeste, ao Japão, no leste, tipicamente habitando recifes próximos à costa. A espécie tem características manchas amarelo-alaranjadas em seus lados, embora grandes barbatanas semelhantes a asas e escamas quitinosas deverão ser levadas em conta para distinguir-lo de espécies relacionadas com coloração semelhante. São predadores poderosos, caçando uma variedade de peixes pequenos, nécton e crustáceos. É um peixe moderadamente grande, alcançando um comprimento máximo de 55 cm, ao redor de 25 cm alcançam a maturidade sexual. A espécie é ocasionalmente capturada por pescadores ao longo de seu alcance, sem querê-lo durante a pesca. A exceção a isto está na zona meridional do Golfo Pérsico, onde ele compõe uma grande proporção da pescaria.

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橘點若鰺 ( cinèis )

fornì da wikipedia 中文维基百科
二名法 Carangoides bajad
Forsskål,1775 Carangoides bajad distribution.png

橘點若鰺,又稱橙點若鰺金點平鰺,俗名為甘仔魚,為輻鰭魚綱鱸形目鱸亞目鰺科的其中一個

分布

本魚分布於印度西太平洋區,紅海馬爾地夫斯里蘭卡孟加拉灣安達曼海印度日本中國沿岸、台灣越南菲律賓印尼泰國馬來西亞聖誕島澳洲等海域。

深度

水深2至50公尺。

特徵

本魚體色為均勻的土黃色。但紅海所產的有體色變異,全身為黑灰色。腹部銀白,胸鰭全長明顯大於頭長,胸鰭向後可達第二背鰭的第5軟條下方。第一背鰭有硬棘7至8枚;第二背鰭有硬棘1枚、軟條24至26枚;臀鰭有硬棘2枚、軟條22至23枚。稜鱗不明顯約18至20枚。體長可達55公分。

生態

本魚為掠食性魚類,春夏之間,常向水質清澈的沙礫石海灘及河口洄游,因水質清澈,對於以目視發現獵物的掠食者而言,是理想的狩獵場所。秋冬之後才離開河口回到水較深的岩石海岸。

經濟利用

食用魚,味道普通,最宜煮湯。

参考文献

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橘點若鰺: Brief Summary ( cinèis )

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橘點若鰺,又稱橙點若鰺、金點平鰺,俗名為甘仔魚,為輻鰭魚綱鱸形目鱸亞目鰺科的其中一個

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コガネアジ ( Giaponèis )

fornì da wikipedia 日本語
コガネアジ C. bajad.jpg 分類 : 動物界 Animalia : 脊索動物門 Chordata 亜門 : 脊椎動物亜門 Vertebrata : 条鰭綱 Actinopterygii : スズキ目 Perciformes 亜目 : スズキ亜目 Percoidei : アジ科 Carangidae : ヨロイアジ属 Carangoides : コガネアジ C. bajad 学名 Carangoides bajad
(Forsskål, 1775) シノニム
  • Scomber ferdau bajad
    Forsskål, 1775
  • Caranx bajad
    (Forsskål, 1775)
  • Caranx immaculatus
    Ehrenberg, 1833
  • Caranx auroguttatus
    Cuvier, 1833
  • Carangoides auroguttatus
    (Cuvier, 1833)
  • Caranx fulvoguttatus var. flava
    Klunzinger, 1871
和名 コガネアジ 英名 Orange-spotted trevally Carangoides bajad distribution.png
おおよその生息域

コガネアジ(学名:Carangoides bajad )は、アジ科に属する沿岸性の海水魚の一種である。西はマダガスカルから東は日本まで、インド太平洋亜熱帯域でよくみられ、ふつう沿岸域の岩礁サンゴ礁に生息する。側面に橙から黄色の斑をもつのが特徴的であるが、同様の体色をもつ近縁種と識別するには鰭条や稜鱗の数を数を調べる必要がある。強力な肉食魚であり、様々な小魚や甲殻類などを捕食する。性成熟には全長25cm前後で到達する。比較的大型の種であり、最大で全長55cmに達したことが知られている。生息域の全域において時たま漁獲されるが、一般的には混獲によるものだと考えられる。例外的にペルシャ湾南部では漁獲の大半を本種が占めている。

分類と命名[編集]

スズキ目アジ科のヨロイアジ属(Caragoides )に属する[1]

本種はスウェーデン博物学者ペール・フォルスコール英語版によって、紅海から得られた標本をホロタイプとして1775年に初記載された[2]種小名は本種のアラビア語名に由来する(なお現在ではアラビア語で"bajad"、"bayad"といえばふつうナマズの一種Bagrus bajad を指し、こちらもフォルスコールが学名を付けている)。ここでの"j"は硬口蓋接近音であり英語の"y"の音で発音する。フォルスコールは紅海産の多くの魚類に命名する際に、このようにアラビア語名に由来する種小名をつけていた[3]。フォルスコールははじめサバ属(Scomber )のクロヒラアジScomber ferdau亜種Scomber ferdau bajad として本種を記載した。本種は後に独立した種タクソンScomber bajadを与えられ、はじめギンガメアジ属(Caranx )に、次いでヨロイアジ属(Carangoides )に移されたことで学名はCarangoides bajad となって現在に至る。なお、クロヒラアジものちにヨロイアジ属に移され現在の学名はCarangoides ferdau である[4]

本種はフォルスコールによる記載ののちも3度独立に再命名されている。一度目はクリスチャン・ゴットフリート・エーレンベルクCaranx immaculatus と命名したが、彼の記載は的確ではなかった。次いで1833年にジョルジュ・キュヴィエCaranx auroguttatus と命名した。この学名はのちにヨロイアジ属(Carangoides )に移されている。最後にCarl Benjamin Klunzingerが1871年に本種を新たな亜種(変種)としてCaranx fulvoguttatus var. flava と命名した[4]。現在ではCarangoides bajad を除く全ての学名は、国際動物命名規約に基づき後行シノニムとして無効とされ、使用されていない。

形態[編集]

 src=
エジプトで撮影された黄色のコガネアジ

ヨロイアジ属に典型的な、側偏した幅広の楕円形の体型をもち、輪郭は腹側よりも背側の方がふくらんでいる。比較的大型の種であり、最大で全長55cmに達した記録があるが、よく見られるのは全長42cm以下の個体である[4][5]。頭部背側の輪郭線は、からのあたりにかけて直線状になっている。眼の直径は吻の長さよりも小さい。両顎には絨毛状歯から成る、複数の幅の狭い歯列が存在する。これらの歯列は体前方に行くほど幅が広くなっている。背鰭は二つの部分に分かれており、第一背鰭には8本の棘条が、第二背鰭には1本の棘条とそれに続く24本から26本の軟条が存在する[6]臀鰭は第二背鰭と、それよりわずかに短いものの相似形をしていて、前方に分離した2本の棘条、そして後方部にある1本の棘条とそれに続く21本から24本の軟条から成る。本種を他種から区別する特徴の一つとして、臀鰭の伸長部の長さが頭部の長さよりも短いことがある[6]側線は前方部でゆるやかに湾曲し、湾曲部は後方の直線部よりも長い。側線直線部には14から26の鱗と、それに続く20から30の稜鱗英語版アジ亜科に独特の鱗)が存在する[7]。胸部は完全に鱗に覆われ、腹鰭近くにわずかに鱗の無い部分をもつ場合がある。椎骨数は24、鰓篩数は25から43である[6]

銀灰色から真鍮色の体色をもち、腹部にかけてはより銀白色を帯びる。多くのはっきりとした橙色から黄色の斑が体側面にあり、このために本種は他種から簡単に区別できる[6]。よく似た同属種のナンヨウカイワリ(C. orthogrammus )やホシカイワリ(C. fulvoguttatus )も斑点を持つが、コガネアジの方が斑点の数が多い[8]。体が完全に黄色になる異型も報告されている[9]が、本種は通常の体色とその黄色の体色の間で、体色を迅速に変化させることができると考えられている[6]。ひれの色は透明からレモンイエローであり、鰓蓋に黒い班は見られない[2]。幼魚の体色は青色が強い[10]

分布[編集]

 src=
紅海のコガネアジ

インド洋と西太平洋熱帯亜熱帯域に生息する。本種の生息域は西はマダガスカルコモロ[11]から、北へ紅海アデン湾ペルシャ湾へと広がる。ごく少数しか標本は得られていないが恐らくインド東部にも生息する[4]。生息域東方ではタイランド湾日本琉球列島で、南方ではインドネシアフィリピンニューブリテン島でよくみられる[6][8]。2005年には地中海で本種が捕獲されたという報告があり、本種がスエズ運河を通り生息域を拡大したことが示唆されている[12]。ただこれについては、「報告の中で用いられた写真に、他にも地中海では見られない種が写っている」として、異議も唱えられている[13]

沿海性の種であり、岩礁サンゴ礁で最もよく見られる。水深2mから50mにおいて、単独で、あるいは群れをなして泳いでいるのがみられる。しばしば岩礁やサンゴ礁の端に沿って、周期的に泳ぎ回っているのが観察される。マルクチヒメジ(Parupeneus cyclostomus )と混じって群れを作ることもある[14]

生態[編集]

コガネアジは遊泳力の高い肉食魚で、小魚、甲殻類、その他のネクトンなど様々な種類の生物を捕食する[15]。平均で尾叉長24.7cmで性成熟に達する。ペルシャ湾で行われた研究では、本種の主な産卵期は6月から9月であることが示唆された。生息域によって産卵期に違いがあるかはまだ分かっていない。同じ研究の中で本種の成長率は季節によって周期的に変動し、11月から4月までの間が最も成長が早く、5月から9月までの間が最も成長が遅いことが分かった[11]

紅海、エジプトでの調査では2.2%の個体がアニサキス科寄生虫の幼虫の寄生を受けていた。そのほとんどは体腔内に遊離した状態で、あるいは肝臓の表面で発見された[16]。2010年には本種の胆嚢から新種のミクソゾア門粘液胞子虫綱の寄生虫が発見され、本種の種小名にちなんでAuerbachia bajadi と命名された[17]

人間との関係[編集]

生息域の全域において延縄刺し網など様々な漁法で漁獲されるが、そのほとんどは混獲によるもので漁獲量の多くを占めている訳ではない[6]。ただ、ペルシャ湾南部における漁業では本種が重要な漁獲対象となっている。ペルシャ湾南部では、コガネアジは海底のすぐ上部で最もよくみられる種のひとつで、針金で出来た仕掛けで漁獲され地元の市場で鮮魚の状態で取引される。コガネアジとコガネシマアジ(Gnathanodon speciosus )を合わせた漁獲量は年間約1100トンに達する[18]UAEにおいては漁船団が発達してきたため、多くの種が乱獲される事態となっているが、本種の漁獲量は依然持続可能なレペルに保たれている[18]。釣りの対象魚となることもある[4]。食用魚である[10]

出典[編集]

  1. ^ Carangoides bajad, ITIS, http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=641977 2008年3月29日閲覧。
  2. ^ a b Ludwig, Albert Carl; Gotthilf Günther (1860). Catalogue of the Fishes in the British Museum. British Museum (Natural History). Dept. of Zoology. pp. 238.
  3. ^ Baheyeldin, Khalid (2004年10月17日). “Forsskål's use of Arabic names for fish species”. The Baheyeldin dynasty. 2015年8月13日閲覧。
  4. ^ a b c d e Froese, Rainer and Pauly, Daniel, eds. (2008). "Carangoides bajad" in FishBase. January 2008 version.
  5. ^ Randall, John E. (1995). Coastal Fishes of Oman. Honolulu: University of Hawaiʻi Press. pp. 183. ISBN 0-8248-1808-3.
  6. ^ a b c d e f g Carpenter, Kent E.; Volker H. Niem (eds.) (2001) (PDF). FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4: Bony fishes part 2 (Mugilidae to Carangidae). Rome: Food and Agriculture Organization of the United Nations. pp. 2694. ISBN 92-5-104587-9. ftp://ftp.fao.org/docrep/fao/009/x2400e/x2400e52.pdf.
  7. ^ Lin, Pai-Lei; Shao, Kwang-Tsao (May 15, 1999). “A Review of the Carangid Fishes (Family Carangidae) From Taiwan with Descriptions of Four New Records”. Zoological Studies 38 (1): 33–68. http://cat.inist.fr/?aModele=afficheN&cpsidt=10055944.
  8. ^ a b 瀬能宏監修『日本の海水魚』 山と渓谷社、2008年、177頁 ISBN 4635070255
  9. ^ Myers, R.F.; Lieske, E. (2004). Coral Reef Guide Red Sea. London: Collins. ISBN 978-0-00-715986-4.
  10. ^ a b 阿部宗明、落合明 『原色魚類検索図鑑 2』 北隆館、ISBN 4832600303。
  11. ^ a b Grandcourt, E.M.; T.Z. Al Abdessalaam, F. Francis & A. Al Shamsi (2004). “Population biology and assessment of representatives of the family Carangidae Carangoides bajad and Gnathanodon speciosus (Forsskal, 1775), in the Southern Arabian Gulf”. Fisheries Research 69 (3): 331–341. doi:10.1016/j.fishres.2004.06.008.
  12. ^ Öztürk, Bayrum (ed) (2005). Marine Life of Turkey in the Aegean and Mediterranean Seas. Istanbul: Turkish Marine Research Foundation (TÜDAV). ISBN 975-8825-07-0.
  13. ^ Golani, Daniel (2006). “The Indian scad (Decapterus russelli), (Osteichthyes: Carangidae), a new Indo-Pacific fish invader of the eastern Mediterranean”. Scientia Marina 70 (4): 603–605. doi:10.3989/scimar.2006.70n4603. ISSN 0214-8358. http://www.icm.csic.es/scimar/index.php/secId/6/IdArt/3288/.
  14. ^ Siliotti, A. (2002). Fishes of the Red Sea. Verona: Geodia. pp. 287. ISBN 88-87177-42-2.
  15. ^ Blaber, S.J.M.; Milton, D.A.; Rawlinson, N.J.F.; Tiroba, G.; Nichols, P.V. (1990). “Diets of lagoon fishes of the Solomon Islands: predators of tuna baitfish and trophic effects of baitfishing on the subsistence fishery”. Fisheries Research 8 (3): 263–286. doi:10.1016/0165-7836(90)90027-S.
  16. ^ Abdou, Nel-S; Dronen NO (2007). “Studies on the juveniles of a species of Anisakis (Nematoda: Anisakidae) from the orangespotted trevally, Carangoides bayad (Carangidae), from the Red Sea, Egypt.”. Journal of the Egyptian Society of Parasitology 37 (3): 1055-1064.
  17. ^ Abdel-Azeem, Sh. Abdel-Baki (2010). “Auerbachia bajadi sp. n. (Myxozoa: Auerbachiidae) infecting the gallbladder of orangespotted trevally Carangoides bajad (Teleostei: Carangidae) in the Red Sea”. Parasitology Research 107 (3): 571-575.
  18. ^ a b Grandcourt, E.; T.Z. Al Abdessalaam, F. Francis, A.T. Al Shamsi, K. Al Ali & S. Al Ali (2004) (PDF). Biological reference points, resource status and management options for the key demersal species of Abu Dhabi Emirate. Environmental Research and Wildlife Development. pp. 1–28. http://www.ead.ae/TacSoft/FileManager/cations/reports/2004%20Stock%20Assessment%20Report.PDF.
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コガネアジ: Brief Summary ( Giaponèis )

fornì da wikipedia 日本語

コガネアジ(学名:Carangoides bajad )は、アジ科に属する沿岸性の海水魚の一種である。西はマダガスカルから東は日本まで、インド太平洋亜熱帯域でよくみられ、ふつう沿岸域の岩礁サンゴ礁に生息する。側面に橙から黄色の斑をもつのが特徴的であるが、同様の体色をもつ近縁種と識別するには鰭条や稜鱗の数を数を調べる必要がある。強力な肉食魚であり、様々な小魚や甲殻類などを捕食する。性成熟には全長25cm前後で到達する。比較的大型の種であり、最大で全長55cmに達したことが知られている。生息域の全域において時たま漁獲されるが、一般的には混獲によるものだと考えられる。例外的にペルシャ湾南部では漁獲の大半を本種が占めている。

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Description ( Anglèis )

fornì da World Register of Marine Species
Inhabits coastal waters.

Arferiment

Froese, R. & D. Pauly (Editors). (2023). FishBase. World Wide Web electronic publication. version (02/2023).

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