Hypanus guttatus
| Hypanus guttatus | ||||||||||||
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Hypanus guttatus |
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| Scientific name | ||||||||||||
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| ( Bloch & Schneider , 1801) |
Hypanus guttatus is a species of stingray and lives in the western Atlantic on the coast between the Gulf of Mexico and Brazil .
features
Hypanus guttatus has a diamond-shaped pectoral fin disc that is slightly wider than it is long. The disc runs out at an approximately right angle, the front sides are concave and run out in a slightly protruding nose. It reaches a disc width of a maximum of 2 meters, but usually more than 1.25 meters, with females becoming larger than males. The tail is whip-like and significantly longer than the disc. Usually it has a poison sting, sometimes none or several. The upper side is olive, brown or gray, occasionally with darker spots, the underside is yellowish or white.
Way of life
The rays live near the coast at depths of no more than 36 meters, mostly over sandy or muddy ground. It hunts prawns , crabs and small bony fish like the sweetlippe , but also molluscs like snails , sea cucumbers , syringes and polybris . It often digs its prey out of the sea floor with the help of the pectoral fin disc. The species is ovoviviparous with litters of one to two young animals that are born after a gestation period of five to six months with a disc width of 12 to 15 centimeters. The animals are fished in the entire distribution area - partly targeted, partly as bycatch - with gill nets , trawls and long lines . The meat on the slice is considered to be of high quality and is marketed fresh, frozen or salted. Apart from Brazil, there are hardly any population figures, which is why its endangered status is rated by the IUCN as DD (data deficit).
Systematics
The ray species was described in 1801 by the German naturalists Marcus Élieser Bloch and Johann Gottlob Theaenus Schneider under the scientific name Raja guttata , later assigned to the genus Dasyatis . When the Dasyatidae was revised in mid-2016 , the species was placed in the genus Hypanus .
literature
- Kent E. Carpenter: The Living Marine Resources of the Western Central Atlantic. Volume 1: Introduction, molluscs, crustaceans, hagfishes, sharks, batoid fishes and chimaeras. FAO Species Identification Guide for Fishery Purposes and American Society of Ichthyologists and Herpetologists, Special Publication No. 5, Rome, FAO, 2002. ISBN 92-5-104825-8 , page 567.
Individual evidence
- ↑ Last, PR, Naylor, GJP & Manjaji-Matsumoto, BM (2016): A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights. Zootaxa , 4139 (3): 345-368. doi: 10.11646 / zootaxa.4139.3.2
Web links
- Hypanus guttatus on Fishbase.org (English)
- Hypanus guttatus on the IUCN Red List