Description: Body wide and relatively thick with a sloping forehead and a large round eye and large terminal mouth. Dorsal-fin base long and anal-fin base short. Prominent dorsal, anal, and pelvic-fin spines and a large non-serrated preopercular spine.
Transitional stage: Transitional recruits of L. jocu have a mostly-uniform scattering of fine melanophores on the body with notably indistinct bars against a finely-speckled background. The blue stripe from under the eye to the mid-maxilla is prominent. Transitional analogues: Transitional recruits of L. jocu develop indistinct bars in the same pattern as the prominent bars in L. apodus. The early recruits of the two species can be difficult to separate, but the bars on L. jocu are generally indistinct (particularly below the anterior dorsal-fin spines) and absent on the caudal peduncle. An additional difference is that the melanophores on L. jocu begin as a very fine and dense scattering vs. larger and sparser melanophores on transitional L. apodus (for example, in the space below the eye, there are about 100 melanophores in an area equal to the pupil in L. jocu vs. about 10 in L. apodus). L. jocu recruits can also be difficult to separate from transitional L. griseus, however the latter have large blotchy melanophores over a fine spotted background, vs. uniform fine speckling seen in L. jocu. L. griseus recruits also rapidly acquire their characteristic striping. L. cyanopterus early recruits share the indistinct bars but do not have the obvious blue stripe on the head and they retain their characteristic black edging to the pelvic fins through the transitional phase.
Juveniles: Juvenile L. jocu have few distinct markings other than the thin blue line extending from the maxilla back under the eye and across the operculum. Most juveniles retain some evidence of indistinct bars. Juvenile analogues: Juvenile L. jocu have no lateral spot (vs. L. analis, L. mahogoni, L. synagris, and the deep-water snappers) and indistinct vertical bars (vs. prominent in L. apodus). They are wider-bodied than L. cyanopterus (which lacks the blue line under the eye as well). Juvenile L. griseus intensify the dark stripe through the eye and develop thin dark stripes on the side of the body.
Diagnosis: Modal fin-ray counts of D-X,14 A-III,8 are shared among most of the regional Lutjanus species, including L. analis, L. apodus, L. cyanopterus, L. griseus, L. jocu and the deep-water snappers L. buccanella, L. campechanus, and L. vivanus. Juvenile L. jocu have indistinct vertical bars, no lateral spot, and a prominent blue line from under the eye to the maxilla. Juveniles are found in mangrove habitats. (DNA)
MZUSP 51168 (1, 119), same locality as MZUSP 65931.
El peix emperador jocú (Lutjanus jocu) és una espècie de peix de la família dels lutjànids i de l'ordre dels perciformes.
Menja peixos, gambes, crancs, gastròpodes i cefalòpodes.[4]
És un peix de clima subtropical i associat als esculls de corall que viu entre 2-40 m de fondària.[4][6]
Es troba des de Massachusetts (Estats Units) fins a São Paulo (Brasil), incloent-hi el Golf de Mèxic i el Carib.[7] També és present a l'Illa de l'Ascensió.[8][4][9][10][11][12]
El peix emperador jocú (Lutjanus jocu) és una espècie de peix de la família dels lutjànids i de l'ordre dels perciformes.
The dog snapper (Lutjanus jocu), also known as the dogtooth snapper, pargue or snuggletooth snapper, is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It is native to the Atlantic Ocean. It is a commercially important species, and is popular for display in public aquaria.
The dog snapper was first formally described in 1801 as Anthias jocu by the German naturalists Marcus Elieser Bloch and Johann Gottlob Schneider with no type locality given, although this is thought to be Havana.[3] The specific name jocu is the local name for this species in Cuba, according to the Portuguese naturalist Antonio Parra.[4]
The dog snapper has a relatively deep, compressed body.[5] It has long pectoral fins, an emarginate or slightly forked caudal fin, a rounded anal fin and a bilobed dorsal fin.[6] Its nostrils are arranged in front and rear pairs and are simple tubes. It has a relatively large mouth which has a moderately protrusible upper jaw which slips under the cheekbone in the closed mouth.[5] A pair of very enlarged canine-like teeth in the upper jaw stay visible when the mouth is closed. The vomerine teeth are arranged in a chevron or crescent shape with a long rearwards extension running from its middle,[7] creating an anchor like shape. There is also a patch of teeth on each side of the roof of the mouth.[5] The preoperculum has a weakly developed incision and knob.[7] The dorsal fin has 10 spines and 14-15 soft rays while the anal fin contains 3 spines and 8 soft rays.[2] The long perctoral fin extends as far as the anus and contains16-17 rays.[7] This fish attains a maximum total length of 128 cm (50 in), although 60 cm (24 in) is more typical, and the maximum published weight is 28.6 kg (63 lb).[2] The adults have olive green upper flanks and backs, which may be marked with slender light-coloured bars. The lower flanks and abdomen are pale red and copper. Beneath the eyes there is a white triangular bar. The pectoral, pelvic, anal fins and outer parts of the soft rayed part of the dorsal fin and the caudal fin are reddish, while the remainder of the dorsal and caudal fins are olive green in colour. The juveniles have a longitudinal blue line underneath the eye extending on to the gill cover, this breaks up into a line of spots in the adults.[6]
Dog snapper is mainly found in the western Atlantic Ocean where there range extends from Massachusetts south to São Paulo in Brazil, including the Bermuda, the Caribbean Sea and Gulf of Mexico and from Saint Paul's Rocks south to Principe in the eastern Atlantic.[2] A first single record[8] was reported for the Mediterranean Sea in 2005 in Ligurian waters, Italy.[9] Adults are generally found around rocky outcrops or coral reefs, while juveniles tend to remain primarily within estuaries and occasionally within rivers.[2] Dog snappers are known to have occurred at depths in excess of 100 m (330 ft) in some areas but they are more frequent at depths of 5 to 30 m (16 to 98 ft).[1]
Dog snappers tend to be solitary, aggregating to spawn in the early spring.[10]
Dog snappers are nocturnal predators prey nocturnally on smaller fish and benthic invertebrates, including crustaceans, gastropods, and cephalopods.[6]
Dog snappers have their main breeding grounds off Jamaica and in the northeastern Caribbean where they typically spawn during March. They do spawn elsewhere in their range but not to the same extents as in the early Spring in the Caribbean.[6] They May form spawning aggregations, often mixed with Cubera snappers (L. cyanopterus). Off Brazil they spawn twice a year and the gonads are most developed between June and October.[1] This species has planktonic eggs and larvae which are spread by the current. Little is known about the development of the larvae until the post-larval stage finally settles into suitable habitat where it gains a measure of protection from predators.[6]
Dog snappers are preyed on by large predatory fish such as sharks and groupers as adults, smaller fish are prey to a number of different marine animals. monogenean worms from the genus Euryhaliotrema have been recorded living on the gills of different snapper species, including this species.[6] Copepods of the genus Caligus, the Acanthocephalan worm Gorgorhynchus cablei, the digeneans in the genus Hamacreadium, Helicometrina and Metadena are also known to be parasites on dog snappers.[11]
The dog snapper has been known to be ciguatoxic, especially the larger specimens, and in areas where this is known there is little interest in fishing for this species. However, where ciguatoxicity is rare this species is a valued food fish and is pursued by commercial fisheries.[1] They are caught using handlines, gill nets, traps, seines, and spears.[6] The catch is sold as fresh and frozen fish.[7] This species seems to be overexploited in some of its range and the juvenile mangrove habitat is threatened by coastal development. In most of its range no catch data is collected and as a result of the lack of data, the perceived decline and the habitat loss for juveniles the IUCN has classified this species as Data Deficient. It is sometimes display in public aquaria.[1]
Media related to Lutjanus jocu at Wikimedia Commons
The dog snapper (Lutjanus jocu), also known as the dogtooth snapper, pargue or snuggletooth snapper, is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It is native to the Atlantic Ocean. It is a commercially important species, and is popular for display in public aquaria.
El jocú o pargo jocú (Lutjanus jocu) es una especie de peces de la familia Lutjanidae en el orden de los Perciformes.
Los machos pueden llegar alcanzar los 128 cm de longitud total y 28,6 kg de peso.[1][2]
Come peces, gambas, cangrejos, gasterópodos cefalópodos.
Es un pez de mar de clima tropical y asociado a los arrecifes de coral que vive entre 2-40 m de profundidad.
Se encuentra desde Massachusetts (Estados Unidos) hasta São Paulo (Brasil), incluyendo el Golfo de México y el Caribe.
Datos: Q955345
Multimedia:
El jocú o pargo jocú (Lutjanus jocu) es una especie de peces de la familia Lutjanidae en el orden de los Perciformes.
Lutjanus jocu Lutjanus generoko animalia da. Arrainen barruko Lutjanidae familian sailkatzen da.
Lutjanus jocu Lutjanus generoko animalia da. Arrainen barruko Lutjanidae familian sailkatzen da.
Lutjanus jocu (Bloch e Schneider, 1801) è un pesce osseo marino della famiglia Lutjanidae[2].
L'areale di questa specie comprende principalmente l'oceano Atlantico occidentale tropicale e, limitatamente subtropicale. Le uniche aree, tutte insulari, dove vive nella parte orientale dell'Atlantico sono l'isola di Ascensione, l'arcipelago di San Pietro e San Paolo e alcune zone isolate a São Tomé e Príncipe. Nell'Atlantico occidentale è diffuso dalle coste del Massachusetts (ma è molto raro a nord della Florida) alla città brasiliana di San Paolo comprendendo il mar dei Caraibi e il golfo del Messico. È stato introdotto alle Bermuda[1][3][4][5]. Nel 2005 un individuo immaturo è stato catturato nel mar Ligure nei pressi di Varazze, questa inaspettata segnalazione, la prima nel mar Mediterraneo, resta senza alcuna plausibile spiegazione[6].
Gli adulti sono tipicamente legati ad ambienti di barriera corallina o ad altri fondali duri (comprese le barriere artificiali e i relitti), mai troppo sottocosta. I giovanili sono molto costieri e si trovano anche in acqua salmastra o perfino nei fiumi con acqua completamente dolce[1][3][4][5].
La distribuzione batimetrica va da 2 a 40 metri ma il range comunemente occupato va da 5 a 30 metri[3].
Caratteristica di Lutjanus jocu sono due denti caniniformi superiori molto grandi tanto da sporgere dalla bocca anche quando è chiusa. Ha corpo piuttosto alto. La pinna dorsale ha 10 raggi spiniformi, la pinna anale 3. Le pinne pettorali sono assai lunghe, tanto da raggiungere l'altezza dell'ano. La pinna caudale è leggermente forcuta. La colorazione generale è bruno olivaceo sul dorso e rossastro pallido sul ventre e i bassi fianchi. Il corpo ha riflessi metallici bronzati sul dorso e ramati nella parte bassa. Talvolta sono presenti delle striature chiare verticali sui fianchi, di solito non ben definite. Una caratteristica macchia biancastra di forma grossolanamente triangolare tra l'occhio e la bocca è sempre presente. Una linea blu irregolare parte dal muso, passa sotto l'occhio e finisce sull'opercolo branchiale, è continua nei giovanili e di solito ridotta a una fila di punti nell'adulto[3][4][5].
La taglia massima è di 128 cm, la taglia comunemente incontrata attorno ai 60 cm. Il peso massimo registrato per questa specie è di 28,6 kg[3].
La longevità massima riportata dalla letteratura è di 29 anni[1].
Specie circospetta, difficile da avvicinare da parte dei subacquei[4].
L. jocu si nutre prevalentemente di pesci, crostacei e molluschi gasteropodi e cefalopodi. Nello specifico la letteratura scientifica riporta la predazione sul gasteropode Strombus gigas e sul cefalopode Octopus vulgaris[7].
Talvolta forma aggregazioni riproduttive con Lutjanus cyanopterus. Si riproduce due volte all'anno[1].
Si tratta di una specie frequentemente ciguatossica e in molte aree, per esempio Porto Rico, le isole Vergini e gran parte delle piccole Antille, non è soggetta a pesca. Dove non è tossica viene catturata con lenze, fucile subacqueo, reti da posta e nasse. La carne è molto apprezzata[1].
L. jocu è distribuito su un vasto areale ed è comune in parte di esso, specie nelle aree tropicali. È soggetto ad intensa pesca laddove non ciguatossico mentre dove lo è non è sfruttato. In alcune aree del Brasile sembra che sia soggetto a sovrapesca. Le popolazioni stanno diminuendo in varie aree ma si hanno poche informazioni sulle quantità effettivamente sbarcate e per questo la lista rossa IUCN non lo classifica per mancanza di dati[1].
Lutjanus jocu (Bloch e Schneider, 1801) è un pesce osseo marino della famiglia Lutjanidae.
De bastaardbaars (Lutjanus jocu) is een straalvinnige vis uit de familie van snappers (Lutjanidae), orde van baarsachtigen (Perciformes). De vis kan een lengte bereiken van 128 centimeter.
De bastaardbaars komt zowel in zoet, brak als zout water voor. De soort komt voor in subtropische wateren in de Atlantische Oceaan op een diepte van 5 tot 30 meter.
De bastaardbaars is voor de visserij van aanzienlijk commercieel belang. In de hengelsport wordt er weinig op de vis gejaagd. De soort kan worden bezichtigd in sommige openbare aquaria.
Voor de mens is de bastaardbaars potentieel gevaarlijk, omdat er meldingen van ciguatera-vergiftiging zijn geweest.
De bastaardbaars (Lutjanus jocu) is een straalvinnige vis uit de familie van snappers (Lutjanidae), orde van baarsachtigen (Perciformes). De vis kan een lengte bereiken van 128 centimeter.
A baúna (Lutjanus jocu) é uma espécie de peixe nativa do Oceano Atlântico, entre o Massachusetts e São Paulo, incluindo o Caribe.[1][2]. Também é conhecido pelos nomes populares de baúna-de-fogo, dentão, vermelho-cachorro, vermelho-siriúba.[3].
A baúna (Lutjanus jocu) é uma espécie de peixe nativa do Oceano Atlântico, entre o Massachusetts e São Paulo, incluindo o Caribe.. Também é conhecido pelos nomes populares de baúna-de-fogo, dentão, vermelho-cachorro, vermelho-siriúba..
白紋笛鯛，為輻鰭魚綱鱸形目鱸亞目笛鯛科的其中一種，分布於西大西洋區，從美國麻州至巴西聖保羅海域，棲息深度2-40公尺，體長可達128公分，棲息在沿海珊瑚礁、岩礁海域、河口區，屬肉食性，以魚類、無脊椎動物等為食，可做為食用魚及觀賞魚。
这是一篇與鱸形目相關的小作品。你可以通过编辑或修订扩充其内容。 白紋笛鯛，為輻鰭魚綱鱸形目鱸亞目笛鯛科的其中一種，分布於西大西洋區，從美國麻州至巴西聖保羅海域，棲息深度2-40公尺，體長可達128公分，棲息在沿海珊瑚礁、岩礁海域、河口區，屬肉食性，以魚類、無脊椎動物等為食，可做為食用魚及觀賞魚。
