Bryde's whale: Difference between revisions

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The taxonomy is poorly characterised. The two genetically distinct, candidate species/subspecies/morphologies are Bryde's whale ''B. brydei'' and the Sittang or Eden's whale ''B. edeni'',<ref name="Olsen"/> that differentiate by geographic distribution, inshore/offshore preferences, and size. For both putative species, the scientific name ''B. edeni'' is commonly used or they are simply referred to ''B.'' cf ''brydei/edeni''.<ref name=NOAA>{{cite web|url=https://www.fisheries.noaa.gov/species/brydes-whale|title=Bryde's Whale|website=NOAA Fisheries|access-date=11 March 2019}}</ref>
 
In 1878, the Scottish zoologist [[John Anderson (zoologist)|John Anderson]], first curator of the [[Indian Museum, Kolkata|Indian Museum]] in [[Kolkata|Calcutta]], described ''Balaenoptera edeni'', naming it after the former British High Commissioner in [[Burma]], Sir [[Ashley Eden]], who helped obtain the type specimen. Eden's Deputy Commissioner, Major A.G. Duff, sent a Mr Duke, one of his assistants, to Thaybyoo Creek, between the [[Sittaung River|Sittang]] and Beeling Rivers, on the [[Gulf of Martaban]], where he found a 37-foot whale, which had stranded there in June 1871 after swimming more than 20 miles up the creek—it was said to have "exhausted itself by its furious struggles" to get free and "roared like an elephant" before finally expiring. Despite terrible weather, he was able to secure almost the entire skull and nearly all its vertebrae, along with other bones. These were sent to Anderson, who described the specimen, which was physically mature, as a new species.<ref name=Anderson>Anderson, J. (1878). Anatomical and Zoological Researches: Comprising an Account of the Zoological Results of the Two Expeditions to Western Yunnan in 1868 and 1875; and a Monograph of the Two Cetacean Genera, ''Platanista'' and ''Orcaella''. ''Quaritch'' London.</ref> In 1913, the Norwegian scientist Ørjan Olsen, based on the examination of a dozen "sei whales" brought to the whaling stations at [[Durban]] and [[Saldanha Bay|Saldanha]], in South Africa, described ''Balaenoptera brydei'', naming it after the Norwegian consul to South Africa Johan Bryde.<ref name="Olsen">{{cite journal | last1 = Olsen | first1 = Ørjan | year = 1913 | title =On the external characters and biology of Bryde's Whale (''Baloenoptera brydei''), a new Rorqual from the coast of South Africa | journal = Proceedings of the Zoological Society of London | volume = 1913 | pages = 1073–1090 |url=https://www.biodiversitylibrary.org/part/70344#/summary |doi=10.1111/j.1096-3642.1913.tb02005.x}}</ref> In 1950, the Dutch scientist G.C.A. Junge, after comparing specimens of ''B. edeni'' and ''B. brydei'' with a 39-foot, physically mature specimen that had stranded on Pulau Sugi, an island between [[Singapore]] and [[Sumatra]], in July 1936, synonymized the two species into ''B. edeni''.<ref name=Anderson /><ref>{{cite journal | last1 = Junge | first1 = G.C.A. | year = 1950 | title = On a specimen of the rare fin whale, ''Balaenoptera edeni'' Anderson, stranded on Pulu Sugi near Singapore | url = http://www.repository.naturalis.nl/document/148868 | journal = Zoologische Verhandelingen | volume = 9 | issue = 1 | pages = 3–26 }}</ref>
 
In the 1950s it was discovered that there were two types of "sei whale" off Japan, a northern form with longer, finer baleen and shorter ventral grooves and a southern form with shorter, coarser baleen and longer ventral grooves. They also differed in the shape of the palate. The former was caught off northeastern [[Honshu]] and eastern [[Hokkaido]], while the latter was taken off western [[Kyushu]] and southern Honshu. Both were caught off the [[Bonin Islands]], but at different seasons. It was realized that the northern form were indeed sei whales (''B. borealis''), but the southern form were Bryde's whale (''B. brydei/edeni'').<ref name=OmuraFujino1954>{{cite journal |last1=Omura |first1=Hideo |last2=Fujino |first2=Kazuo |year=1954 |title=Sei whales in the adjacent waters of Japan II. Further studies on the external characters |journal=The Scientific Reports of the Whales Research Institute |volume=9 |pages=89–103 |url=https://www.icrwhale.org/pdf/SC00989-103.pdf }}</ref> A later study revealed that Bryde's caught off Japan exhibited lateral ridges on their [[Rostrum (anatomy)|rostrum]], whereas sei whales lacked this feature.<ref name=OmuraJapan1962>{{cite journal |last1=Omura |first1=Hideo |year=1962 |title=Further information on Bryde's whale from the coast of Japan |journal=The Scientific Reports of the Whales Research Institute |volume=16 |pages=7–18 |url=https://www.icrwhale.org/pdf/SC0167-18.pdf }}</ref>
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| url = https://www.iucnredlist.org/details/2476/0 | title = Balaenoptera_brydei | author = Reilly, S.B. | author2 = Bannister, J.L. | author3 = Best, P.B. | author4 = Brown, M. | author5 = Brownell Jr., R.L. | author6 = Butterworth, D.S. | author7 = Clapham, P.J. | author8 = Cooke, J. | author9 = Donovan, G.P. | author10 = Urbán, J. | display-authors = etal | year = 2008 | access-date = 5 August 2011}}</ref><ref name="Yamada2006">Yamada, T. K., L.-S. Chou, S. Chantrapornsyl, K. Adulyanukosol, S. K. Chakravarti, M. Oishi, S. Wada, C.-J. Yao, T. Kakuda, Y. Tajima, K. Arai, A. Umetani & N. Kurihara (2006). "Middle sized balaenopterid whale specimens (Cetacea: Balaenopteridae) preserved at several institutions in Taiwan, Thailand and India". ''Memoirs of the National Science Museum'', Tokyo, 44:1–10.</ref><ref name=Yamada2008>Yamada, T. K., T. Kakuda & Y. Tajima (2008). "Middle-sized balaenopterid whale specimens in the Philippines and Indonesia". ''Memoirs of the National Science Museum.'' Tokyo, 45:75–83.</ref> Mitochondrial DNA analysis showed that Bryde's whales caught in the pelagic western North Pacific and [[Bonin Islands]] (resident population), as well as biopsy samples taken from whales off [[Hawaii]], the west coast of Baja California, and the southern Gulf of California, belonged to ''B. brydei''.<ref name=Goto2004>Goto, M., Kanda, N., & Pastene, L. A. (2004). "Analysis of mtDNA sequences in Bryde's whales from the central western North Pacific and Baja California Peninsula". SC/56/PF15. ''Unpublished report to the Scientific Committee of the International Whaling Commission''.</ref> Resident or semi-resident groups also exist off Hawaiian<ref>{{Cite web | url=http://www.nmfs.noaa.gov/pr/sars/2013/po2013_brydeswhale-hi.pdf | title=Welcome to NOAA &#124; NOAA Fisheries}}</ref> and [[Northwestern Hawaiian Islands]],{{citation needed|date=June 2020}} and [[Northern Mariana Islands]].<ref>http://www.navymarinespeciesmonitoring.us/files/6313/8628/5792/Fulling_et_al_2011_Distribution_and_abundance_of_cetaceans_Guam_and_CNMI-MISTCS_Pacific_Science.pdf</ref> Bryde's whales do not occur within central to northern [[Sea of Japan]] on regular basis or at least in large numbers. One of the northernmost records in modern times was of a beached, 5-meter-long specimen at [[Nakhodka]] in 2011.<ref>{{cite web|url=http://www.pk25.ru/news/nakhodka/01_06_11_pod_nahodkoyi_vibrosilsya_na_bereg_pyatim.html|title=Под Находкой выбросился на берег пятиметровый кит|website=www.pk25.ru}}</ref>
 
''B. brydei'' occurs throughout the Indian Ocean north of about [[35th parallel south|35°S]]. Those of the southern Indian Ocean appear to correspond to ''B. brydei'', as do the individuals illegally caught by the Soviets in the 1960s in the northwest Indian Ocean, as well as the [[Maldives]]. Individuals sighted in the [[Red Sea]] may or may not be ''B. brydei''.<ref name=IUCN /><ref name=Masseti>{{cite journal |last1=Masseti |first1=Marco |title=The mammals of the Farasan archipelago, Saudi Arabia |journal=Turkish Journal of Zoology |date=6 August 2010 |volume=34 |issue=3 |pages=359–365 |url=https://journals.tubitak.gov.tr/zoology/abstract.htm?id=10978|doi=10.3906/zoo-0905-2|doi-access=free }}</ref>
 
In the North Atlantic, they have been recorded as far north as [[Cape Hatteras]]. They occur in the [[Gulf of Mexico]] and throughout the wider [[Caribbean]]—two specimens from [[Aruba]] were found through mtDNA analysis to be firmly placed within ''B. brydei'' and to form a [[clade]] with a specimen from [[Madeira]] and individuals of the offshore form of South Africa. They were first recorded in the [[Azores]] in 2004 and showing mixed traits of offshore and inshore forms,<ref name=Steiner2007 /> but do not occur in the [[Mediterranean Sea]] (regarding the bones of a baleen whale found, Bryde's whale was listed as one of suggested species<ref>Small B. D.. 1995. [https://books.google.co.nz/books?id=arV-lo3tW8UC&pg=PA257&lpg=PA257&dq=bryde%27s+whale+mediterranean&source=bl&ots=iGvv4mSkwj&sig=kAAxqrVwc5VUopOa021JdPS6zHo&hl=en&sa=X&ved=0ahUKEwiPqLDE8ZXWAhUDGZQKHeLWD7EQ6AEIUTAJ#v=onepage&q=bryde's%20&f=false Methods in the Mediterranean: Historical and Archaeological Views on Texts and Archaeology]. pp. 257. [[Brill Publishers]]. Retrieved on 9 September 2017</ref>). They appear to occur off Brazil year-round, such as around [[Rio de Janeiro]]—[[Cabo Frio|Cape Frio]],<ref name="Lodi et al 2015">{{cite journal |last1=Lodi |first1=Liliane |last2=Tardin |first2=Rodrigo H. |last3=Hetzel |first3=Bia |last4=Maciel |first4=Israel S. |last5=Figueiredo |first5=Luciana D. |last6=Simão |first6=Sheila M. |title=Bryde's whale (Cetartiodactyla: Balaenopteridae) occurrence and movements in coastal areas of southeastern Brazil |journal=Zoologia (Curitiba) |date=April 2015 |volume=32 |issue=2 |pages=171–175 |doi=10.1590/S1984-46702015000200009 |doi-access=free }}</ref> [[Armação dos Búzios]], entrance to [[Guanabara Bay]],<ref>Machado M.. 2014. [http://g1.globo.com/rio-de-janeiro/noticia/2014/03/final-de-verao-do-rio-tem-rolezinho-de-baleias-em-busca-de-comida.html Final de verão do Rio tem 'rolezinho' de baleias em busca de comida]. Globo.com ([[:pt:Globo.com|pt]]). Retrieved on 18 September 2017</ref><ref>Lodi L.. 2016. [https://econserv.wordpress.com/2016/02/04/baleia-de-bryde-navegando-com-as-gigantes/ Baleia-de-bryde: Navegando com as gigantes]. Blog ECONSERV – Ecologia, Conservação e Serviços. Retrieved on 18 September 2017</ref><ref>Lima D.