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Bathytoshia lata ist eine Stechrochenart und lebt küstennah im Mittelmeer, an der östlichen Atlantikküste südlich bis Angola und ist auch im Indopazifik östlich bis Hawaii weit verbreitet.[1]
Bathytoshia lata hat eine rautenförmige Brustflossen-Scheibe, die ein Viertel breiter als lang ist, und deren vordere Seiten fast gerade sind und in einem stumpfen Winkel aufeinandertreffen, während die hinteren Seiten stark gerundet sind. Er erreicht eine Scheibenbreite von maximal 1,5 m, meist aber eher 1 m, bei einem Gewicht von bis zu 56 kg. Der peitschenartige Schwanz ist mindestens doppelt so lang wie die Scheibe, und trägt einen einzelnen Giftstachel in der Nähe der Basis. Die Oberseite ist oliv oder braun, die Unterseite ist weiß.
Der Rochen lebt über sandigem oder schlammigen Grund und in Riffen, meist in Tiefen von mehr als 15 m, vor Maui, Kāne'ohe Bay und Oʻahu. Den Tag verbringt er meist am Boden eingegraben, nachts jagt er hauptsächlich bodenbewohnende Krustentiere, aber auch Vielborster und Knochenfische. Er ist ovovivipar. Von der IUCN wird er als LC (nicht gefährde) eingestuft.
Die Rochenart wurde im Jahr 1880 durch den US-amerikanischen Ichthyologen Samuel Garman unter der wissenschaftlichen Bezeichnung Trygon lata beschrieben, später dann der Gattung Dasyatis zugeordnet. Bei einer Mitte 2016 erfolgten Revision der Dasyatidae wurde die Art in die Gattung Bathytoshia gestellt. Dasyatis thetidis (Ogilby, 1899) ist ein weiteres Synonym von Bathytoshia lata.[2]
Bathytoshia lata ist eine Stechrochenart und lebt küstennah im Mittelmeer, an der östlichen Atlantikküste südlich bis Angola und ist auch im Indopazifik östlich bis Hawaii weit verbreitet.
The Broad stingray (Bathytoshia lata), also known as the Brown stingray or Hawaiian stingray, is a species of stingray in the family Dasyatidae. The predominant species of stingray in the inshore waters of the Hawaiian Islands, this benthic fish typically inhabits sandy or muddy flats at depths greater than 15 m (49 ft). Usually growing to 1 m (3 ft) across, the broad stingray has a wide, diamond-shaped pectoral fin disc with a protruding snout tip and a long tail with a ventral fin fold. At night, this species actively forages for bottom-dwelling invertebrates and bony fishes, often near the boundaries of reefs. Reproduction is aplacental viviparous. As substantial threats to its population do not seem to exist, IUCN has listed this species as least concern.
American zoologist Samuel Garman described the Broad stingray in an 1880 issue of the scientific journal Bulletin of the Museum of Comparative Zoology, giving it the name Trygon lata from the Latin word for "broad".[2][3] Subsequent authors synonymized Trygon with Dasyatis.[4] The type specimen was collected from what were then called the "Sandwich Islands", and measures 52 cm (20 in) across.[2]
Lisa Rosenberger's 2001 phylogenetic analysis of 14 Dasyatis species, based on morphological characters, found that the sister species of the broad stingray is the roughtail stingray (D. centroura), and that they form a clade with the southern stingray (D. americana) and the longtail stingray (D. longa). As D. centroura is found in the Atlantic, this suggests that it and D. lata evolutionarily diverged before or with the formation of the Isthmus of Panama (about 3 million years ago).[5]
Bathytoshia lata occurs in the Atlantic and the Indo-Pacific from southern Africa to the Hawaiian Islands [6] and is also found in the Mediterranean Sea [7] with occasional records from Spain to Turkey.
This species is common in coastal bays with mud or silt bottoms, and may also be encountered in sandy areas or near coral reefs. It is most common at depths between 40-200 m but is found as far down as 800 m.[6]
The broad stingray has a diamond-shaped pectoral fin disc a fourth wider than long, with nearly straight leading margins that converge at an obtuse angle, and curved trailing margins. The tip of the snout is rounded and protrudes past the disc. The mouth is arched and contains five or six papillae on the floor, two of which are in front of the others. The pelvic fins are short and rounded. The whip-like tail is twice or more the length of the disc, and bears a serrated stinging spine on the upper surface near the tail base. A long, narrow fin fold occurs beneath the tail, which eventually becomes a keel that runs all the way to the tail tip.[2][3]
Larger rays have three large, elongated tubercles in the middle of the back; the tail is roughened by small dermal denticles, along with an irregular row of conical tubercles on each side and several large, flattened tubercles in front of the spine. This species is plain olive to brown above and white below.[2] Though rarely found so far west, the similar-looking diamond stingray (D. dipterura) is the only other nearshore stingray that occurs off Hawaii; it can be distinguished from this species by its tail, which is shorter and has both upper and lower fin folds. The broad stingray can reach 1.5 m (5 ft) across and 56 kg (123 lb) in weight, though few exceed 1 m (3 ft) across.[3][8]
During the day, the broad stingray is relatively inactive and spends much time lying half-buried on the bottom. A tracking study in Kaneohe Bay found that individuals rays roamed over an average area of 0.83 km2 (0.32 sq mi) at night, compared to an average diurnal activity space of 0.12 km2 (0.046 sq mi), and did not rest consistently in any particular spot. Rays were most active 2 hours after sunset and before sunrise, and were more active in the higher water temperatures of summer than winter. The behavior of this species was not significantly influenced by tides, likely because they inhabit deeper water.[9]
The broad stingray feeds mainly on bottom-dwelling crustaceans, while also taking polychaete worms and small bony fishes.[8] It excavates large pits to uncover buried prey, and is often followed by opportunists such as jacks.[3] Foraging rays favor areas close to reef boundaries, where many parrotfish, wrasses, gobies, and other reef fishes shelter at night.[9] Known parasites of this species include the tapeworms Acanthobothrium chengi, Rhinebothrium hawaiiensis,[10] Pterobothrium hawaiiensis, Prochristianella micracantha, and Parachristianella monomegacantha.[11] Like other stingrays, the broad stingray is aplacental viviparous.[6] Kaneohe Bay appears to be a nursery area for this species, where juvenile scalloped hammerheads (Sphyrna lewini) and it are the dominant predators.[9]
The International Union for the Conservation of Nature has assessed the broad stingray as of least concern, as it faces no obvious threats from human activity and its range overlaps with several marine protected areas.[12] This species has become a popular subject for display at public aquariums and resorts.[3]
{{cite journal}}: CS1 maint: uses authors parameter (link) {{cite journal}}: CS1 maint: multiple names: authors list (link) The Broad stingray (Bathytoshia lata), also known as the Brown stingray or Hawaiian stingray, is a species of stingray in the family Dasyatidae. The predominant species of stingray in the inshore waters of the Hawaiian Islands, this benthic fish typically inhabits sandy or muddy flats at depths greater than 15 m (49 ft). Usually growing to 1 m (3 ft) across, the broad stingray has a wide, diamond-shaped pectoral fin disc with a protruding snout tip and a long tail with a ventral fin fold. At night, this species actively forages for bottom-dwelling invertebrates and bony fishes, often near the boundaries of reefs. Reproduction is aplacental viviparous. As substantial threats to its population do not seem to exist, IUCN has listed this species as least concern.
Bathytoshia lata es una especie de pez de la familia Dasyatidae en el orden de los Rajiformes.
Los machos pueden llegar alcanzar los 100 cm de longitud total.[2][3]
Es ovíparo.
Es un pez de mar y de clima subtropical y demersal que vive entre 40-357 m de profundidad.
Se encuentra en el océano Pacífico: Hawái y Taiwán.
Es inofensivo para los humanos.
Bathytoshia lata es una especie de pez de la familia Dasyatidae en el orden de los Rajiformes.
Dasyatis lata Dasyatis generoko animalia da. Arrainen barruko Dasyatidae familian sailkatzen da.
Dasyatis lata Dasyatis generoko animalia da. Arrainen barruko Dasyatidae familian sailkatzen da.
Dasyatis lata (appelée quelquefois Dasyatis latus) est une espèce de raie appartenant à la famille des Dasyatidés.
On la trouve surtout dans les eaux côtières des îles Hawaï, généralement dans les zones sablonneuses ou vaseuses à des profondeurs supérieures à 15 m. Mesurant environ 1 m de large, elle a une vaste nageoire pectorale en forme de losange, un museau proéminent et une longue queue avec un mince pli ventral.
La nuit, cette espèce fourrage activement à la recherche d'invertébrés benthiques et de poissons, souvent à proximité des frontières de récifs.
La reproduction est vivipare aplacentaire. Comme il ne semble pas y avoir de menaces importantes sur sa population, l'Union internationale pour la conservation de la nature a classé cette espèce en préoccupation mineure.
O uje-de-cauda-espinhosa (nome científico: Bathytoshia lata) é uma espécie de arraia pertencente à família Dasyatidae. Possui distribuição geográfica no Sul da África, Austrália e Nova Zelândia a partir da zona entremarés na profundidade de 440 m.
A espécie foi primeiramente descrita a partir de quatro espécimes coletados em Nova Gales do Sul, em 1898, pelo ictiologista australiano James Douglas Ogilby durante sua expedição científica no arrastão HMCS Thetis, pelo qual a espécie foi nomeada. Este feito foi publicado no ano seguinte, em 1899, na revista científica Memoirs of the Australian Museum.[2]
Sua cauda pode ter o dobro do comprimento do corpo e é uma arma formidável contra potenciais predadores. Espessa na base e mais fina na extremidade, como um chicote, possui pequenos espinhos e uma ou duas farpas aguçadas e serrilhadas. O veneno é perigoso para os seres humanos.
O uje-de-cauda-espinhosa (nome científico: Bathytoshia lata) é uma espécie de arraia pertencente à família Dasyatidae. Possui distribuição geográfica no Sul da África, Austrália e Nova Zelândia a partir da zona entremarés na profundidade de 440 m.
