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Differences between the beaked whales Mesoplodon mirus and Mesoplodon gervaisi. American Museum novitates ; no. 1831

Show simple item record Moore, Joseph Curtis. en_US Wood, Forrest G. (Forrest Glenn), 1918- en_US 2005-10-06T17:47:41Z 2005-10-06T17:47:41Z 1957 en_US
dc.description 25 p. : ill., maps ; 24 cm. en_US
dc.description Includes bibliographical references (p. 24-25). en_US
dc.description.abstract "A stranding of a young male Mesoplodon mirus True is reported from Flagler Beach, Florida - the most southern record for the species. The distribution of occurrences of Mesoplodon mirus and Mesoplodon gervaisi Deslongchamps are charted, and evidence of geographic segregation of the two species is noticed and discussed. Mesoplodon mirus apparently occupies the temperate western North Atlantic, and gervaisi the tropical and near tropical western North Atlantic. Eighteen proposed skull differences between Mesoplodon mirus and M. gervaisi are tested on the two specimens of the former and three of the latter in the American Museum of Natural History, and to some extent on published photographs of other specimens. Five of these propositions are found to be good, or modifiable so that they distinguish this material, and two others are found to be useful as supporting evidence. In addition to the interspecific differences concurred in by this testing of the 18 skull chracters, some intraspecific differences are observed in gervaisi. Part of this variation is shown to be sexual dimorphism, and the studied gervaisi material is sorted by it into three females and three males. Individual variation is evidently greater in the males. Comparison of external body measurements suggests that the length of the flipper of mirus generally exceeds that of gervaisi in proportion to total body length. Comparison of 31 skull measurements of the two species reveals nine measurements which, used collectiely, will separate skulls of these two species"--P. 23-24. en_US
dc.format.extent 5212448 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, N.Y. : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 1831 en_US
dc.subject.lcc QL1 .A436 no.1831, 1957 en_US
dc.subject.lcsh True's beaked whale. en_US
dc.subject.lcsh Mesoplodon europaeus. en_US
dc.subject.lcsh Beaked whales en_US
dc.subject.lcsh Whales -- North Atlantic Ocean en_US
dc.subject.lcsh Mammals -- North Atlantic Ocean en_US
dc.title Differences between the beaked whales Mesoplodon mirus and Mesoplodon gervaisi. American Museum novitates ; no. 1831 en_US
dc.title.alternative Beaked whales en_US
dc.type text en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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