Biology:Birdbeak dogfish

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Short description: Species of shark

Birdbeak dogfish
Deania calcea.jpg
Drawing by Bideault
Deania.calcea.jpg
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Subdivision: Selachimorpha
Order: Squaliformes
Family: Centrophoridae
Genus: Deania
Species:
D. calcea
Binomial name
Deania calcea
(R. T. Lowe, 1839)
Deania calcea distmap.png
Range of birdbeak dogfish (in blue)

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]

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

  1. Finucci, B.; Cheok, J.; Cotton, C.F.; Kulka, D.W.; Neat, F.C.; Pacoureau, N.; Rigby, C.L.; Tanaka, S. et al. (2020). "Deania calcea". IUCN Red List of Threatened Species 2020: e.T41798A68619155. doi:10.2305/IUCN.UK.2020-3.RLTS.T41798A68619155.en. https://www.iucnredlist.org/species/41798/68619155. Retrieved 19 November 2021. 
  2. 2.0 2.1 Carpenter, Kent E.; Luna, Susan M. (2019). "Deania calcea (Lowe, 1839) Birdbeak dogfish". http://www.fishbase.se/summary/Deania-calcea.html. 
  3. Duffy, Clinton A. J.; Francis, Malcolm; Dunn, M. R.; Finucci, Brit; Ford, Richard; Hitchmough, Rod; Rolfe, Jeremy (2018). Conservation status of New Zealand chondrichthyans (chimaeras, sharks and rays), 2016. Wellington, New Zealand: Department of Conservation. pp. 10. ISBN 9781988514628. OCLC 1042901090. https://www.doc.govt.nz/globalassets/documents/science-and-technical/nztcs23entire.pdf. 
  4. Paiva, R., Neves, A., Sequeira, V., Nunes, M., Gordo, L., & Bandarra, N. (2012). "Reproductive strategy of the female deep-water shark birdbeak dogfish, Deania calcea: Lecithotrophy or matrotrophy?" Journal of the Marine Biological Association of the United Kingdom, 92(2), 387-394. doi:10.1017/S0025315411001743
  5. Barros Paiva, Rafaela; Neves, Ana; Sequeira, Vera; Cardoso, Carlos; Bandarra, Narcisa; Serrano Gordo, Leonel; Leonor Nunes, Maria (2012-06-08). "Risks and benefits' consumption of birdbeak dogfish Deania calcea" (in en). British Food Journal 114 (6): 826–839. doi:10.1108/00070701211234354. ISSN 0007-070X. https://www.emerald.com/insight/content/doi/10.1108/00070701211234354/full/html. 


Wikidata ☰ Q667012 entry