bio.wikisort.org - Animal

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]

Longnose eagle ray
Conservation status
Vulnerable  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	Myliobatiformes
Family:	Myliobatidae
Genus:	Myliobatis
Species:	M. longirostris
Binomial name
Myliobatis longirostris Applegate & Fitch, 1964

Distribution and habitat

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

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

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

На других языках

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- [en] Longnose eagle ray

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[ru] Myliobatis longirostris

Myliobatis longirostris — вид хрящевых рыб рода орляков семейства орляковых скатов отряда хвостоколообразных надотряда скатов. Эти скаты обитают в субтропических водах восточной части Тихого океана. Встречаются на глубине до 64 м. Максимальная зарегистрированная ширина диска 95 см. Грудные плавники этих скатов срастаются с головой, образуя ромбовидный диск, ширина которого превосходит длину. Характерная форма плоского рыла напоминает утиный нос. Тонкий хвост длиннее диска. Окраска дорсальной поверхности диска ровного оливково-коричневого цвета.

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