Baird's beaked whale (Berardius bairdii), also known as the northern giant bottlenose whale, North Pacific bottlenose whale, giant four-toothed whale, northern four-toothed whale and the North Pacific four-toothed whale, is a species of whale from the genus Berardius. Baird's and Arnoux's beaked whales are so similar that researchers have debated whether or not they are simply two populations of the same species. However, genetic evidence and their wide geographical separation has led them to be classified as separate. Baird's beaked whale is the second largest living species of toothed whale after the sperm whale.
Baird's beaked whales were first described in 1883 by American zoologist Leonhard Stejneger based on a skull from a specimen that had been found stranded on the eastern shore of Bering Island the previous fall. The species was named after Spencer Fullerton Baird, the then Secretary of the Smithsonian.[3] A few months after Stejneger's description was published, Swedish zoologist August Wilhelm Malm published a description of a new species in the Beradius genus, Beradius vegae, based on a portion of a skull found on Bering Island in 1879. Beradius vegae was later determined to be a junior synonym of Beradius bairdii.[4][5]
Description
The species reaches lengths of about 11.9 metres (39 ft) for males and 12.8 metres (42 ft) for females.[6] The snout, called a beak, is elongated and lacks all teeth except for one or two sets in the lower mandible, which are called "battle teeth" for their use in intra-species conflict. Individuals often bear scars from such confrontations.
Baird's beaked whale can live for up to 84 years.[7]
Distribution
The species occurs the North Pacific Ocean and the Japan, Okhotsk, and Bering Seas. It is a deep-water species, primarily frequenting depths between 1,000 m and 3,000 m.
References
^Taylor, B.L.; Brownell Jr.; R.L. (2020). "Berardius bairdii". IUCN Red List of Threatened Species. 2020: e.T2763A50351457. doi:10.2305/IUCN.UK.2020-3.RLTS.T2763A50351457.en. Retrieved 19 November 2021.
^Stejneger, Leonhard (1883). "Contributions to the history of the Commander Islands. No. 1. Notes on the natural history, including descriptions of new cetaceans" (PDF). Proceedings of the United States National Museum: 58–89. Retrieved January 20, 2022.
^True, Frederick W. (1910). "An account of the beaked whales of the family Ziphiidae in the collection of the United States National Museum, with remarks on some specimens in other American museums". Bulletin of the United States National Museum. 73 (73): 60–89. doi:10.5479/si.03629236.73.i. hdl:2027/uiug.30112106907329. Retrieved 20 January 2022.
^Yamada, T.K.; Kitamura, S.; Abe, S.; Tajima, Y.; Matsuda, A.; Mead, J.G.; Matsuishi, T.F. (2019). "Description of a new species of beaked whale (Berardius) found in the North Pacific". Scientific Reports. 9 (1): 12723. Bibcode:2019NatSR...912723Y. doi:10.1038/s41598-019-46703-w. PMC6717206. PMID 31471538.
^"Berardius bairdii". fao.org. Food and Agriculture Organization of the United Nations. Retrieved 2021-07-15.
^"Berardius bairdii". The Moirai - Aging Research. 2016-10-19. from the original on 21 November 2016. Retrieved 2016-11-20.
This Cetacean-related article is a stub. You can help Wikipedia by expanding it.
baird, beaked, whale, berardius, bairdii, also, known, northern, giant, bottlenose, whale, north, pacific, bottlenose, whale, giant, four, toothed, whale, northern, four, toothed, whale, north, pacific, four, toothed, whale, species, whale, from, genus, berard. Baird s beaked whale Berardius bairdii also known as the northern giant bottlenose whale North Pacific bottlenose whale giant four toothed whale northern four toothed whale and the North Pacific four toothed whale is a species of whale from the genus Berardius Baird s and Arnoux s beaked whales are so similar that researchers have debated whether or not they are simply two populations of the same species However genetic evidence and their wide geographical separation has led them to be classified as separate Baird s beaked whale is the second largest living species of toothed whale after the sperm whale Baird s beaked whaleTemporal range Middle Miocene to present 11 5 0 Ma PreꞒ Ꞓ O S D C P T J K Pg NBaird s beaked whale Berardius bairdii Size compared to an average humanConservation statusLeast Concern IUCN 3 1 1 CITES Appendix I CITES 2 Scientific classificationKingdom AnimaliaPhylum ChordataClass MammaliaOrder ArtiodactylaInfraorder CetaceaFamily ZiphiidaeGenus BerardiusSpecies B bairdiiBinomial nameBerardius bairdiiStejneger 1883Baird s beaked whale rangeA school swimming in the ocean Contents 1 Taxonomy 2 Description 3 Distribution 4 ReferencesTaxonomy EditBaird s beaked whales were first described in 1883 by American zoologist Leonhard Stejneger based on a skull from a specimen that had been found stranded on the eastern shore of Bering Island the previous fall The species was named after Spencer Fullerton Baird the then Secretary of the Smithsonian 3 A few months after Stejneger s description was published Swedish zoologist August Wilhelm Malm published a description of a new species in the Beradius genus Beradius vegae based on a portion of a skull found on Bering Island in 1879 Beradius vegae was later determined to be a junior synonym of Beradius bairdii 4 5 Description EditThe species reaches lengths of about 11 9 metres 39 ft for males and 12 8 metres 42 ft for females 6 The snout called a beak is elongated and lacks all teeth except for one or two sets in the lower mandible which are called battle teeth for their use in intra species conflict Individuals often bear scars from such confrontations Baird s beaked whale can live for up to 84 years 7 Distribution EditThe species occurs the North Pacific Ocean and the Japan Okhotsk and Bering Seas It is a deep water species primarily frequenting depths between 1 000 m and 3 000 m References Edit Taylor B L Brownell Jr R L 2020 Berardius bairdii IUCN Red List of Threatened Species 2020 e T2763A50351457 doi 10 2305 IUCN UK 2020 3 RLTS T2763A50351457 en Retrieved 19 November 2021 Appendices CITES cites org Retrieved 2022 01 14 Stejneger Leonhard 1883 Contributions to the history of the Commander Islands No 1 Notes on the natural history including descriptions of new cetaceans PDF Proceedings of the United States National Museum 58 89 Retrieved January 20 2022 True Frederick W 1910 An account of the beaked whales of the family Ziphiidae in the collection of the United States National Museum with remarks on some specimens in other American museums Bulletin of the United States National Museum 73 73 60 89 doi 10 5479 si 03629236 73 i hdl 2027 uiug 30112106907329 Retrieved 20 January 2022 Yamada T K Kitamura S Abe S Tajima Y Matsuda A Mead J G Matsuishi T F 2019 Description of a new species of beaked whale Berardius found in the North Pacific Scientific Reports 9 1 12723 Bibcode 2019NatSR 912723Y doi 10 1038 s41598 019 46703 w PMC 6717206 PMID 31471538 Berardius bairdii fao org Food and Agriculture Organization of the United Nations Retrieved 2021 07 15 Berardius bairdii The Moirai Aging Research 2016 10 19 Archived from the original on 21 November 2016 Retrieved 2016 11 20 This Cetacean related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Baird 27s beaked whale amp oldid 1141083595, wikipedia, wiki, book, books, library,
