bio.wikisort.org - Animal

The birdbeak dogfish (Deania calcea) is a dogfish shark of the family Centrophoridae found in the Pacific Ocean around Honshū, Japan, southern Australia, New Zealand, and Chile, and in the Atlantic Ocean from Iceland south to the Cape of Good Hope.[2]

Birdbeak dogfish
Drawing by Bideault
Conservation status
Near Threatened  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Superorder:	Selachimorpha
Order:	Squaliformes
Family:	Centrophoridae
Genus:	Deania
Species:	D. calcea
Binomial name
Deania calcea (R. T. Lowe, 1839)
Range of birdbeak dogfish (in blue)

The birdbeak dogfish has a very long, narrow snout, no anal fin, two long and low dorsal fins with grooved spines, small rectangular pectoral fins, and pitchfork-like denticles. It lives at depths between 73 and 1,450 m. It is ovoviviparous with up to 12 pups per litter. It eats bony fish and shrimp.[2]

In June 2018 the New Zealand Department of Conservation classified the birdbeak dogfish as "Not Threatened" under the New Zealand Threat Classification System.[3]

A study published in the Journal of the Marine Biological Association of the United Kingdom evaluated the reproductive strategy of the female deep-water shark birdbeak dogfish. This research article discovers that there is a close relationship that exists between Hg level of pregnant females and the Hg level of their embryos, which indicates that there is a transfer of mercury from maternal sources. Therefore, there is a matrophoric strategy for the birdbeak dogfish that are ovoviviparous.[4]

With the rise of fisheries, the birdbeak dogfish is being consumed at higher rates. It has been found to be a good source of minerals, such as potassium and sodium. However, there have been health risks associated with frequent consumption of female dogfish.[5]

References

На других языках

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- [en] Birdbeak dogfish

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[ru] Длиннорылая колючая акула

Длиннорылая колючая акула[1] (лат. Deania calcea) — вид хрящевых рыб семейства короткошипых акул. Эти глубоководные акулы были обнаружены в ограниченных областях Тихого, Атлантического и Индийского океана на глубине до 1490 м[2]. Размножаются яйцеживорождением[3]. Максимальная зарегистрированная длина 122 см[2]. Рацион состоит в основном из костистых рыб, головоногих и ракообразных[4]. Имеют небольшое промысловое значение.

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