SPOTTAIL SHARK - ABU DHABI - CARCHARHINUS SORRAH (MULLER & HENLE, 1839)
Pisces (Superclass) > Elasmobranchii (Class) > Neoselachii (Subclass) > Selachii (Infraclass) > Galeomorphi (Superorder) > Carcharhiniformes (Order) > Carcharhinidae (Family) > Carcharhinus (Genus)
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Requin à queue tachetée, School shark, spot-tail shark, sorrah shark, Tiburón rabo manchado, قرش ذو ذيل مُبقَّع, ಷೀರಟ್ , 검은꼬리상어, 沙条, 沙拉真鯊, 色拉白眼鲛, 沙拉白眼鮫, पिसोरि, கட்டா சுரா, నెల్ల వెకల్ సొర్రా, Cá Mập miệng rộng, ホウライザメ,
Ce requin de petite taille possède un corps fusiforme et ventru. Son museau arrondi est assez long, ses yeux sont ronds. Sa deuxième dorsale extrénement basse, et ses pectorales sont courtes. Une ride interdorsale est présente. Semi-benthique et côtier en eaux tropicales, en zones coralliennes ; de la zone intertidale à 140 m de fond. Sa taille maximale est de 2,50 m.
Il est trés largement reparti dans l'Océan Indien, en Mer Rouge, dans le Pacifique: des côtes sud-est de l'Afrique jusqu'au Japon ; de la Chine à l'Australie.
Il est vivipare, donne naissance au printemps et en été de 2 à 6 juvéniles mesurants de 45 à 60 cm, aprés un an de gestation. Maturité sexuelle atteinte à 1 m pour les deux sexes.
Nageur actif, il poursuit de divers proies - poissons osseux de récifs - certains requins et raies - céphalopodes (pieuvres) - crustacés: crabes et crevettes. Les adultes se nourrissent aussi de poissons pélagiques.
Ce requin reste la proie d'espèces plus grandes (grand requin blanc, requin tigre, requin océanique, grand requin marteau, requin bleu...). Il peut se montrer potentiellement dangereux envers l'homme. Ses captures restent occasionnelles, sa chair, ailerons et son huile sont utilisés pour l'alimentation.
Synonymes
Carcharhinus bleekeri (Duméril, 1865)
Carcharhinus spallanzani (Péron & Lesueur, 1822)
Carcharias bleekeri (Duméril, 1865)
Carcharias sorrah (Müller & Henle, 1839)
Carcharias spallanzani (Péron & Lesueur, 1822)
Carcharias taeniatus (Hemprich & Ehrenberg, 1899)
Carcharinus sorrah (Müller & Henle, 1839)
Carcharius spallanzani (Péron & Lesueur, 1822)
Eulamia spallanzani (Péron & Lesueur, 1822)
Galeolamna isobel (Whitley, 1947)
Squalus spallanzani (Péron & Lesueur, 1822)
-------------------------------------------
The spot-tail shark, or sorrah shark, is a species of requiem shark, in the family Carcharhinidae. It is fished commercially over much of its range and the IUCN considers it to be "near threatened".
Description
The spot-tail shark is a spindle-shaped fish growing to about 1.6 m (5 ft 3 in). It has a fairly long, pointed snout and moderately large eyes. The first dorsal fin is large and curved while the second dorsal fin is small and low. The back and sides are grey and the belly white, and there is a long white streak on the flank. This species can be distinguished from other requiem sharks found in tropical waters by the distinctive black tips to the second dorsal fin, the pectoral fins and the lower lobe of the caudal fin. There is a ridge over the spine extending from the first to the second dorsal fin and a pit just in front of the upper lobe of the caudal fin. The upper teeth are serrated, oblique and triangular. The Australian blacktip shark (Carcharhinus tilstoni), which occupies a similar range, has similar black tips to the fins but additionally has a black tip to its first dorsal fin. It lacks the ridge between the two dorsal fins and its upper teeth are also different, being slender, upright and pointed.
Distribution
The spot-tail shark is found in the tropical Indo-Pacific on continental and insular shelves commonly to a depth of about 73 m (240 ft) but possibly as deep as 140 metres (460 ft). Its range extends from the East African coast, Madagascar and the Red Sea to India, Malaysia, China, the Philippines and northern Australia.
Biology
The spot-tail shark spends the day near the seabed and the night at the surface, most frequently around reefs. It is a predator and feeds on bony fish such as bonito and sea bass, cephalopods and crustaceans.
The spot-tail shark is viviparous with a yolk sac placenta, giving birth once a year to a litter of one to eight live young. The gestation period is ten months and the pups measure about 50 cm (20 in) at birth. The young develop in shallow inshore waters. They grow rapidly at first, increasing in length by about 20 cm (8 in) during their first year but growth slows down thereafter. Females reach sexual maturity at two to three years and live for a maximum of seven years while males live up to five years.
Ce requin de petite taille possède un corps fusiforme et ventru. Son museau arrondi est assez long, ses yeux sont ronds. Sa deuxième dorsale extrénement basse, et ses pectorales sont courtes. Une ride interdorsale est présente. Semi-benthique et côtier en eaux tropicales, en zones coralliennes ; de la zone intertidale à 140 m de fond. Sa taille maximale est de 2,50 m.
Il est trés largement reparti dans l'Océan Indien, en Mer Rouge, dans le Pacifique: des côtes sud-est de l'Afrique jusqu'au Japon ; de la Chine à l'Australie.
Il est vivipare, donne naissance au printemps et en été de 2 à 6 juvéniles mesurants de 45 à 60 cm, aprés un an de gestation. Maturité sexuelle atteinte à 1 m pour les deux sexes.
Nageur actif, il poursuit de divers proies - poissons osseux de récifs - certains requins et raies - céphalopodes (pieuvres) - crustacés: crabes et crevettes. Les adultes se nourrissent aussi de poissons pélagiques.
Ce requin reste la proie d'espèces plus grandes (grand requin blanc, requin tigre, requin océanique, grand requin marteau, requin bleu...). Il peut se montrer potentiellement dangereux envers l'homme. Ses captures restent occasionnelles, sa chair, ailerons et son huile sont utilisés pour l'alimentation.
Synonymes
Carcharhinus bleekeri (Duméril, 1865)
Carcharhinus spallanzani (Péron & Lesueur, 1822)
Carcharias bleekeri (Duméril, 1865)
Carcharias sorrah (Müller & Henle, 1839)
Carcharias spallanzani (Péron & Lesueur, 1822)
Carcharias taeniatus (Hemprich & Ehrenberg, 1899)
Carcharinus sorrah (Müller & Henle, 1839)
Carcharius spallanzani (Péron & Lesueur, 1822)
Eulamia spallanzani (Péron & Lesueur, 1822)
Galeolamna isobel (Whitley, 1947)
Squalus spallanzani (Péron & Lesueur, 1822)
-------------------------------------------
The spot-tail shark, or sorrah shark, is a species of requiem shark, in the family Carcharhinidae. It is fished commercially over much of its range and the IUCN considers it to be "near threatened".
Description
The spot-tail shark is a spindle-shaped fish growing to about 1.6 m (5 ft 3 in). It has a fairly long, pointed snout and moderately large eyes. The first dorsal fin is large and curved while the second dorsal fin is small and low. The back and sides are grey and the belly white, and there is a long white streak on the flank. This species can be distinguished from other requiem sharks found in tropical waters by the distinctive black tips to the second dorsal fin, the pectoral fins and the lower lobe of the caudal fin. There is a ridge over the spine extending from the first to the second dorsal fin and a pit just in front of the upper lobe of the caudal fin. The upper teeth are serrated, oblique and triangular. The Australian blacktip shark (Carcharhinus tilstoni), which occupies a similar range, has similar black tips to the fins but additionally has a black tip to its first dorsal fin. It lacks the ridge between the two dorsal fins and its upper teeth are also different, being slender, upright and pointed.
Distribution
The spot-tail shark is found in the tropical Indo-Pacific on continental and insular shelves commonly to a depth of about 73 m (240 ft) but possibly as deep as 140 metres (460 ft). Its range extends from the East African coast, Madagascar and the Red Sea to India, Malaysia, China, the Philippines and northern Australia.
Biology
The spot-tail shark spends the day near the seabed and the night at the surface, most frequently around reefs. It is a predator and feeds on bony fish such as bonito and sea bass, cephalopods and crustaceans.
The spot-tail shark is viviparous with a yolk sac placenta, giving birth once a year to a litter of one to eight live young. The gestation period is ten months and the pups measure about 50 cm (20 in) at birth. The young develop in shallow inshore waters. They grow rapidly at first, increasing in length by about 20 cm (8 in) during their first year but growth slows down thereafter. Females reach sexual maturity at two to three years and live for a maximum of seven years while males live up to five years.