Mesoplodon species Mesoplodon stejnegeri Name Synonyms Mesoplodon bowdoini Nishiwaki, 1962 Nodus stejnegeri Moore, 1963 Homonyms Mesoplodon stejnegeri True, 1885 Mesoplodon stejnegeri Nishiwaki & Tamiya, 1959 Common names and Hildebrand, J.A., 2014.
(1958). Males apparently use their teeth for intraspecific fighting with other males to establish breeding hierarchies.
Known and inferred distributions of beaked whale species (Cetacea: Ziphiidae). The whales are rare and have not been studied much. Marine Mammal Science 23(4):954-966.Heyning, J.E., 1984. Although there are no world population estimates for any individual Mesoplodon species, Bradford et al. A comprehensive and validated molecular taxonomy of beaked whales, familyZiphiidae. (2006) used visual sightings data from the eastern tropical Pacific to estimate a population of 25,300 mesoplodonts from an area where nearly all of the identified Mesoplodon spp… (2016) estimated 2105 M. densirostris in Hawaiian EEZ waters, and Barlow et al. Historically, mesoplodont species have been diagnosed by features of the skull, relying mainly on the length of the rostrum, and the shape, size, and placement of teeth, especially of adult males. Several species have never been identified alive in the wild, and at least one species is known only from skeletal remains.
The estimates of g(0) by Barlow (2015) were relative to a value of 1 at a Beaufort sea state of 0 for most species or species groups considered, with the exception of the Cuvier's beaked whale (Ziphius cavirostris) and Mesoplodon spp., for which scaled absolute estimates of g(0) were determined for Beaufort sea states 0-6. https://academic.oup.com/jhered/article/95/6/459/2187509,Nakano, H. and Tabuchi, M., 1990.
However, it is noted that the scars on the adult male appear to have been made with a single tooth, rather than with two teeth simultaneously, as might be expected in species with apical teeth.The largest Perrin's beaked whale calf, LACM 088901, at 2.45 m of length, appeared to be independent from its mother. Population abundance and trend estimates for beaked whales and sperm whales in the California Current from ship-based visual line-transect survey data, 1991-2014. https://repository.library.noaa.gov/view/noaa/15457,MacLeod, C.D., Perrin, W.F., Pitman, R., Barlow, J., Ballance, L.I.S.A., D Amico,A.N.G.E.L.A., Gerrodette, T., Joyce, G., Mullin, K.D., Palka, D.L.
; Leatherwood, S. & Webber, M.A.Dalebout ML, Mead JG, Baker CS, Baker AN, van Helden AL (2002) A new species of beaked whale Mesoplodon perrini sp. FISHERY BULLETIN OF THE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION 69(4)791-798.MacLeod, C.D., Perrin, W.F., Pitman, R., Barlow, J., Ballance, L.I.S.A., D Amico, A.N.G.E.L.A., Gerrodette, T., Joyce, G., Mullin, K.D., Palka, D.L. Mesoplodon species Mesoplodon europaeus Name Synonyms Dioplodon europaeus Gervais, 1855 Dioplodon gervaisi Deslongchamps, 1866 Mesoplodon gervaisi (Deslongchamps, 1866) Neoziphius europaeus Gray, 1871 Nodus europaeus Hershkovitz, 1961 Homonyms Stranded Perrin's beaked whales have been found along the Californian coast between Torrey Pines State Reserve, just north of San Diego (32°55’N, 117°15’W) and Fisherman's Wharf, Monterey (36°37’N, 121°55’W).Even though current data suggest an eastern North Pacific distribution, there are too few records to date to draw any conclusions on this. Marine mammal science 18(3):577-608.Moore, J.E. and Yamada, T.K., 2004. a genus of mammals of the family Ziphiidae (beaked whales). and Barlow, J., 2017. The female found in 1975 had died around May 14 (Mead 1981), and its juvenile was found on May 22. Canadian Journal of Zoology 62(8):1645-1654.Jones, E.C., 1971. A beaked whale Mesoplodon stranded at Oiso Beach, Japan. Declining abundance of beaked whales (Family Ziphiidae) in the California current large marine ecosystem.
1--17. Functional morphology involved in intraspecific fighting of the beaked whale, Mesoplodon carlhubbsi. ; Chivers, S.J. A comprehensive and validated molecular taxonomy of beaked whales, family Ziphiidae. Usage Conditions Apply.
The specimen found in 1997, was starving at the time of death, possibly following a parasite infection (Dalebout et al. The rostrum of the skull is hard and solid, and the jaws are long and narrow. By continuing you agree to the.Copyright © 2020 Elsevier B.V. or its licensors or contributors.ScienceDirect ® is a registered trademark of Elsevier B.V.Copyright © 2009 Elsevier Inc. All rights reserved.Encyclopedia of Marine Mammals (Second Edition),https://doi.org/10.1016/B978-0-12-373553-9.00167-X. Spatio-temporal patterns of beaked whale echolocation signals in the North Pacific. Mesoplodont whales are found in nearly all of the deeper, oceanic waters of the world and they are by far the most speciose genus of marine mammal. The whales have a body length reaching 6 m; the coloration is dark, sometimes with white spots. But despite this, they remain among the least known large animals on the planet. Currently, there are 14 recognized species in Mesoplodon and new species are still being discovered. They eat cephalopod mollusks and fish.All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Cookie-cutter shark scars on a calf found in Monterey could be evidence of migratory behavior, because in surface waters cookie-cutter sharks,Beaked whales are timid, deep divers who can dive for up to 2 hours, so little is known about the behavior and ecology of Perrin's beaked whales because they are rarely seen. & Dizon, A.E.Jefferson, T.A. n.(Cetacea: Ziphiidae) discovered through phylogenetic analyses of mitochondrial DNA sequences. The two main human-caused threats to mesoplodonts are probably bycatch in fishing gear and anthropogenic noise.We use cookies to help provide and enhance our service and tailor content and ads. Journal of Cetacean Research and Management 7(3):271.Nakano, H. and Tabuchi, M., 1990. The smallest specimen, USNM 504259, at 2.1 m of length, had a fringed tongue which indicated it was still suckling.Perrin beaked whales are thought to produce a species-specific frequency modulated (FM) echolocation pulse of BW43.Perrin's beaked whales are threatened by attacks from sharks such as the,These whales are vulnerable to naval sonar and seismic activity.
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