# Birdbeak dogfish > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Birdbeak_dogfish > Markdown URL: https://mediated.wiki/source/Birdbeak_dogfish.md > Source: https://en.wikipedia.org/wiki/Birdbeak_dogfish > Source revision: 1355296157 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{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 = {{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}} | genus = Deania | species = calcea | authority = ([R. T. Lowe](/source/Richard_Thomas_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](/source/Squaliformes) shark of the [family](/source/Family_(taxonomy)) [Centrophoridae](/source/Centrophoridae) found in the [Pacific Ocean](/source/Pacific_Ocean) around [Honshū](/source/Honsh%C5%AB), [Japan](/source/Japan), southern [Australia](/source/Australia), [New Zealand](/source/New_Zealand), and [Chile](/source/Chile), and in the [Atlantic Ocean](/source/Atlantic_Ocean) from [Iceland](/source/Iceland) south to the [Cape of Good Hope](/source/Cape_of_Good_Hope).{{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}} The birdbeak dogfish has a very long, narrow snout, no [anal fin](/source/anal_fin), two long and low [dorsal fin](/source/dorsal_fin)s with grooved spines, small rectangular [pectoral fin](/source/pectoral_fin)s, and pitchfork-like [denticle](/source/Dermal_denticle)s. It lives at depths between 73 and 1,450 m. It is [ovoviviparous](/source/Ovoviviparity) with up to 12 pups per litter. It eats pelagic [bony fish](/source/bony_fish), [squid](/source/squid), [octopus](/source/octopus), and [shrimp](/source/shrimp). In June 2018 the New Zealand [Department of Conservation](/source/Department_of_Conservation_(New_Zealand)) classified the birdbeak dogfish as "Not Threatened" under the [New Zealand Threat Classification System](/source/New_Zealand_Threat_Classification_System).{{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}} 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](/source/matrotrophy) strategy for the birdbeak dogfish that are ovoviviparous.{{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}} 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](/source/potassium) and [sodium](/source/sodium). However, there have been health risks associated with frequent consumption of female dogfish.{{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}} ==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 --- Adapted from the Wikipedia article [Birdbeak dogfish](https://en.wikipedia.org/wiki/Birdbeak_dogfish) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Birdbeak_dogfish?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.