The Beaked Whale Berardius on the Washington Coast

Slipp, John W.; Wilke, Ford

doi:10.2307/1375949

Cited by 7 publications

(4 citation statements)

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“…Both are cold-water forms and appear clearly discontinuous in distribution. Differentiation is slight and examination of recent specimens suggests that distinguishing characteristics are not as clear as was once thought (Pike, 1953;Slipp and Wilke, 1953). When the full range of variation in arnuxi becomes known, it may prove to warrant no more than subspecific separation.…”

Section: Antitropical Cold-water Formsmentioning

confidence: 94%

The Antitropical Factor in Cetacean Speciation

Davies

1963

Evolution

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Section: Antitropical Cold-water Formsmentioning

confidence: 94%

The Antitropical Factor in Cetacean Speciation

Davies

1963

Evolution

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“…True 11 pointed out several characters that are distinct between these two species. However, as the number of specimens increased, most of the characters lost systematic significance, and their validity was disputed 14,15 . Dalebout et al .…”

Section: Genus Berardiusmentioning

confidence: 99%

Description of a new species of beaked whale (Berardius) found in the North Pacific

Yamada

Kitamura

et al. 2019

Sci Rep

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Two types of Berardius are recognised by local whalers in Hokkaido, Japan. The first is the ordinary Baird’s beaked whale, B . bairdii , whereas the other is much smaller and entirely black. Previous molecular phylogenetic analyses revealed that the black type is one recognisable taxonomic unit within the Berardius clade but is distinct from the two known Berardius species. To determine the characteristics of the black type, we summarised external morphology and skull osteometric data obtained from four individuals, which included three individuals from Hokkaido and one additional individual from the United States National Museum of Natural History collection. The whales differed from all of their congeners by having the following unique characters: a substantially smaller body size of physically mature individuals, proportionately shorter beak, and darker body colour. Thus, we conclude that the whales are a third Berardius species.

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“…Nishiwaki (1966Nishiwaki ( , 1967 also suggested that Hyperoodon ampullatus might exist in the Sea of Japan. Data presented by Slipp and Wilke (1953), Nishimura (1970), andKasuya (1986) confirm that Berardius bairdii is present in the Sea of Japan and southern Okhotsk Sea and that this species is the principal beaked whale caught off Hokkaido. There is no unequivocal evidence that the Northern Bottlenose Whale, or any other species of Hyperoodon, inhabits the cold temperate and subarctic waters of the North Pacific.…”

Section: Exploitationmentioning

confidence: 87%

Status of Baird' s Beaked Whale, Berardius bairdii

Reeves,

Mitchell

1993

The Canadian Field-Naturalist

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Baird's Beaked Whale, Berardius bairdii, is a large odontocete with a distribution restricted to the cool, deep waters of the northern North Pacific Ocean and contiguous seas. Off the Asian coast where the species has been exploited for centuries three stocks are recognized: Sea of Japan, Okhotsk Sea, and Pacific Ocean. Off North America the range extends from Alaska to Mexico. Baird's Beaked Whales are observed mainly over the continental slope and in pelagic areas with submarine escarpments and seamounts. They are deep divers that prey on squid and deep-sea fish. Schools of up to 30 animals have been observed, but groups of four to ten are more typical. Baird's Beaked Whales were exploited on a relatively small scale by shore-based whalers in the eastern North Pacific; 35 were taken in British Columbia between 1950 and 1966. Exploitation since the late 1960s has been limited to Japanese waters, where a national quota of about 60 Baird's Beaked Whales has been in effect since 1988. Sighting surveys on the whaling grounds indicate a population of several thousand Baird's Beaked Whales available to the fishery. There is no immediate concern for the survival of the species and no COSEWIC status designation is required. !

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The Beaked Whale Berardius on the Washington Coast

Cited by 7 publications

References 0 publications

The Antitropical Factor in Cetacean Speciation

The Antitropical Factor in Cetacean Speciation

Description of a new species of beaked whale (Berardius) found in the North Pacific

Status of Baird' s Beaked Whale, Berardius bairdii

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