French
DeutschLongnose eagle ray
| Longnose eagle ray | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | Myliobatiformes |
| Family: | Myliobatidae |
| Genus: | Myliobatis |
| Species: | M. longirostris |
| Binomial name | |
| Myliobatis longirostris | |
The longnose eagle ray or snouted eagle ray (Myliobatis longirostris) is a species of fish in the family Myliobatidae. It is found in the East Pacific Ocean from Baja California and the Gulf of California to Sechura, Peru, ranging from shallow water to a depth of 64 m (210 ft).[1] This species was first described in 1964 by the American ichthyologist Shelton Pleasants Applegate, who was an expert on fossil and living sharks, and by American marine biologist John Edgar Fitch.[2]
Distribution and habitat
[edit]The longnose eagle ray is native to tropical and warm temperate waters in the east central Pacific Ocean.[3] Its ranges from Mexico to Peru.[1] It occurs on the continental shelf from the surface down to depths of about 64 m (210 ft).[3]
Biology
[edit]Very little is known about this fish, its behaviour and ecology. They reach sexual maturity at a disc diameter of about 74 cm (29 in) for females and 54 cm (21 in) for males. Their maximum diameter is about 95 cm (37 in). Like other members of the genus they are ovoviviparous, the young developing in the uterus and receiving nourishment from a yolk or uterine secretions.[1]
Status
[edit]Living in shallow water above the continental shelf and being a schooling fish, the longnose eagle ray is vulnerable to fishing activities; it is not a target species but is sometimes landed as bycatch by trawling, gillnets and longline fisheries, with the areas where it lives being subject to intensive fishing pressure.[1] Off the coast of Mexico it is often caught while trawling for shrimps; most of the fish caught in this way are discarded, but some are sold locally as fresh meat, or the flesh is dried or salted. Because of this vulnerability to fishing, and because these eagle rays have a low fecundity, the International Union for Conservation of Nature has assessed their conservation status as being "vulnerable".[1]
References
[edit]- ^ a b c d e f Pollom, R.; Bizzarro, J.; Avalos, C.; Burgos-Vázquez, M.I.; Herman, K.; Pérez Jiménez, J.C.; Sosa-Nishizaki, O. (2020). "Myliobatis longirostris". IUCN Red List of Threatened Species. 2020: e.T60125A124441508. doi:10.2305/IUCN.UK.2020-3.RLTS.T60125A124441508.en. Retrieved 15 November 2021.
- ^ Watkins, Michael; Beolens, Bo (2015). Sharks: An Eponym Dictionary. Pelagic Publishing Ltd. pp. 5, 47. ISBN 978-1-78427-037-7.
- ^ a b Carrier, Jeffrey C.; Musick, John A.; Heithaus, Michael R. (2010). Sharks and Their Relatives II: Biodiversity, Adaptive Physiology, and Conservation. CRC Press. p. 236. ISBN 978-1-4200-8048-3.
