Potamotrygon boesemani (lat.) Is a recently discovered species of stingrays of the genus of river stingrays of the same family from the order of stingrays . Lives in tropical waters of the basin of the Koranteyn river ( South America ). The maximum recorded length is 42.7 cm. The pectoral fins of these slopes form a rounded disk. Dorsal and caudal fins absent. In the middle part of the caudal stem is a poisonous thorn [1] . It is not an object of target fishing [2] .
| Potamotrygon boesemani |
| Scientific classification |
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| No rank : | Bilateral symmetrical |
| View: | Potamotrygon boesemani |
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| International scientific name |
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Potamotrygon boesemani Rosa , Carvalho & Almeida Wanderley , 2008 |
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Content
The species was first scientifically described in 2008 [3] . The species was named after Marinus Bozeman (1916-2006) from Leiden University for its contribution to South American ichthyology and the history of zoology [4] . The holotype is a male, 37.7 cm long, caught in the Corantein River, Suriname ( ). Paratypes: males 25β41.3 cm long and females 15.3β42.7 cm long, caught there [5] .
Potamotrygon boesemani live in South America, in the Korantein River Basin, on the border of Guyana. Potamotrygon boesemani (English) information on the Encyclopedia of Life website (EOL) ..
The broad pectoral fins of Potamotrygon boesemani fuse with the head and form an oval disk. Dorsal fins and caudal fin absent. Behind the eyes are sprays . The ventral fins are rounded and almost completely covered by a disc. On the ventral side of the disc are nostrils and 5 pairs of gill slits [1] . The tail is rather short and thick in comparison with other representatives of the river stingray family. On its dorsal surface there is a poisonous thorn. Every 6-12 months it breaks off and a new one grows in its place. At the base of the spike are glands that produce poison, which spreads along the longitudinal grooves. In the normal state, the thorn rests in a recess of flesh filled with mucus and poison [6] .
Body color is often dark brown in color with a pattern of irregularly shaped eyes of dark orange or red color with a black border in the form of several concentric circles. The color of the ocelli is more intense compared to the ocular stingray , Potamotrygon henlei , Potamotrygon leopoldi . Unlike these stingrays, Potamotrygon boesemani has no eyes on the tail. The maximum recorded length is 42.7. Small teeth, 45 upper dentitions. The number of rays of the pectoral fins is 98-104 [3] .
Potamotrygon boesemani , probably like the other caudate-like, breed by egg-bearing .
The International Union for Conservation of Nature has not yet assessed the conservation status of this species.
- β 1 2 McEachran, JD Urolophidae. Rayas redondas = W. Fischer, F. Krupp, W. Schneider, C. Sommer, KE Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. - Rome: FAO, 1995 .-- T. 3 .-- S. 786-792.
- β Potamotrygon boesemani (English) in the FishBase database.
- β 1 2 Rosa, RS, MR de Carvalho and C. de Almeida Wanderley. Potamotrygon boesemani (Chondrichthyes: Myliobatiformes: Potamotrygonidae), a new species of neotropical freshwater stingray from Surinam // Neotrop. Ichthyol .. - 2008. - Vol. 6, No. (1) . - P. 1-8.
- β Christopher Scharpf and Kenneth J. Lazara. Fish Name Etymology Database (Neopr.) . The ETYFish Project . Date of treatment April 13, 2014.
- β Potamotrygon boesemani (neopr.) . Shark References. Date of treatment November 7, 2014.
- β Kenneth Wingerter. Aquarium Fish: An Overview of Stingrays of the genus Potamotrygon, Part Two // Advanced Aquarist. - 2013. - Issue. XII .