{{Short description|Species of shark}} {{speciesbox | name = Birdbeak dogfish | image = Deania calcea.jpg | image_caption = Drawing by Bideault | image2 = Deania.calcea.jpg | status = NT | status_system = IUCN3.1 | status_ref = <ref name="iucn status 19 November 2021">{{cite iucn |author=Finucci, B. |author2=Cheok, J. |author3=Cotton, C.F. |author4=Kulka, D.W. |author5=Neat, F.C. |author6=Pacoureau, N. |author7=Rigby, C.L. |author8=Tanaka, S. |author9=Walker, T.I. |date=2020 |title=''Deania calcea'' |volume=2020 |article-number=e.T41798A68619155 |doi=10.2305/IUCN.UK.2020-3.RLTS.T41798A68619155.en |access-date=19 November 2021}}</ref> | genus = Deania | species = calcea | authority = (R. T. Lowe, 1839) | range_map = Deania calcea distmap.png | range_map_caption = Range of birdbeak dogfish (in blue) }} {{Portal|Sharks}}
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.<ref name=":0">{{Cite web|url=http://www.fishbase.se/summary/Deania-calcea.html|title=Deania calcea (Lowe, 1839) Birdbeak dogfish|last1=Carpenter|first1=Kent E.|last2=Luna|first2=Susan M.|date=2019|website=Fishbase|access-date=19 January 2019}}</ref>
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 pelagic bony fish, squid, octopus, and shrimp.<ref name=":0" />
In June 2018 the New Zealand Department of Conservation classified the birdbeak dogfish as "Not Threatened" under the New Zealand Threat Classification System.<ref>{{Cite book|url=https://www.doc.govt.nz/globalassets/documents/science-and-technical/nztcs23entire.pdf|title=Conservation status of New Zealand chondrichthyans (chimaeras, sharks and rays), 2016|last1=Duffy|first1=Clinton A. J.|last2=Francis|first2=Malcolm|last3=Dunn|first3=M. R.|last4=Finucci|first4=Brit|last5=Ford|first5=Richard|last6=Hitchmough|first6=Rod|last7=Rolfe|first7=Jeremy|publisher=Department of Conservation|year=2018|isbn=978-1-988514-62-8|location=Wellington, New Zealand|pages=10|oclc=1042901090}}</ref>
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 study found a strong association between mercury concentrations in pregnant females and those in their embryos, indicating maternal transfer of nutrients and a matrophoric strategy for the birdbeak dogfish that are ovoviviparous.<ref>{{Cite journal|last1= Barros Paiva|first1=Rafaela|last2=Neves|first2=Ana|last3=Sequeira|first3=Vera|last4=Nunes|first4=Maria Leonor|last5=Gordo|first5=Leonel Serrano|last6=Bandarra|first6=Narcisa|date=2012-03-01|title=Reproductive strategy of the female deep-water shark birdbeak dogfish, ''Deania calcea'': lecithotrophy or matrotrophy?|url=https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/reproductive-strategy-of-the-female-deepwater-shark-birdbeak-dogfish-deania-calcea-lecithotrophy-or-matrotrophy/7C59F9CC6714675BA4BCEDB7F01E0711|journal=Journal of the Marine Biological Association of the United Kingdom|language=en|volume=92|issue=2|pages=387–394|doi=10.1017/S0025315411001743<|issn=0025-3154|url-access=subscription}}</ref>
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.<ref>{{Cite journal|last1=Barros Paiva|first1=Rafaela|last2=Neves|first2=Ana|last3=Sequeira|first3=Vera|last4=Cardoso|first4=Carlos|last5=Bandarra|first5=Narcisa|last6=Serrano Gordo|first6=Leonel|last7=Leonor Nunes|first7=Maria|date=2012-06-08|title=Risks and benefits' consumption of birdbeak dogfish ''Deania calcea''|url=https://www.emerald.com/insight/content/doi/10.1108/00070701211234354/full/html|journal=British Food Journal|language=en|volume=114|issue=6|pages=826–839|doi=10.1108/00070701211234354|issn=0007-070X|url-access=subscription}}</ref>
==References== {{Reflist}}
{{Selachimorpha|S.}}
{{Taxonbar|from1=Q111223800|from2=Q107333159}}
Category:Deania Category:Fish of the East Atlantic Category:Fish of Chile Category:Fish of Japan Category:Fish of West Africa Category:Marine fish of New Zealand Category:Fauna of South Australia Category:Irish Sea Category:Fish described in 1839 Category:Taxa named by Richard Thomas Lowe