Hypanus longus
| Hypanus longus | ||||||||||||
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| Scientific name | ||||||||||||
| Hypanus longus | ||||||||||||
| ( Garman , 1880) |
Hypanus longus is a species of stingray and lives in the eastern Pacific between Baja California and Colombia .
features
Hypanus longus has a diamond-shaped pectoral fin disc that is slightly wider than it is long. It achieves pane widths of maximum 1.6 m with total lengths of up to 2.6 m and weights of up to 46 kg. The front sides of the disc are straight and meet at the snout at obtuse angles. The tail is usually more than twice as long as the disc and has a poison sting on the top. Many caught specimens had their tails shortened by breaking. The color of the upper side of the pane varies between red-brown and dark gray, the underside is light.
Way of life
The ray lives near the coast over sandy bottom and in rock and coral reefs at depths of up to 90 m. He hunts reef and bottom-dwelling bony fishes and invertebrates , with the latter in particular, mantis shrimp , decapods and molluscs . It is ovoviviparous with litters of one to five young animals, which are usually born in late summer in shallow water after a gestation period of ten to eleven months with a disc width of about 40 cm.
The sting of its poison sting can injure people, and under certain circumstances even kill them. It is often brought in by coastal fishermen with beam trawls , longlines or gill nets . In Mexico it is marketed fresh, dried or salted. Since the number of rays fished in the distribution area is not differentiated by species, the IUCN assesses the endangerment status as DD (data deficit).
Systematics
The ray species was described in 1880 by the American ichthyologist Samuel Garman under the scientific name Trygon longa , later assigned to the genus Dasyatis . When the Dasyatidae was revised in mid-2016 , the species was placed in the genus Hypanus .
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 longus on Fishbase.org (English)
- Hypanus longus on the IUCN Red List