Migration of the Northern Fur Seal, Callorhinus ursinus

Kenyon, Karl W.; Wilke, Ford

doi:10.2307/1375947

Cited by 66 publications

(57 citation statements)

References 9 publications

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“…During autumn, adult female and juvenile northern fur seals migrate from breeding areas in the Bering Sea and the Sea of Okhotsk (Kenyon & Wilke 1953, Kajimura 1980, Pyle et al 2001) to continental slope waters off western North America (Antonelis & Perez 1984, Kajimura 1982. Usually, the greatest numbers off central California occur during February to May (Kajimura 1982).…”

Section: El Niñomentioning

confidence: 99%

Marine mammal occurrence and ocean climate off central California, 1986 to 1994 and 1997 to 1999

Keiper¹,

Ainley²,

Allen³

et al. 2005

Mar. Ecol. Prog. Ser.

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The California Current System (CCS), a highly variable eastern boundary system, supports a rich marine mammal fauna. Variation in local coastal upwelling, coupled with larger scale processes (El Niño/La Niña) affects the productivity and distribution of marine species at all trophic levels. Herein, we present an analysis of the occurrence patterns of marine mammals in the central CCS and relate these patterns to changing ocean climate and prey availability. Data on marine mammal distributions, ocean conditions, and prey availability were collected in waters overlying the continental shelf and slope from Bodega to Monterey Bays, from 1986 to 1994 and 1997 to 1999. Occurrence patterns were investigated using geographical information system (GIS), percent similarity index (PSI), multiple logistic regression, and principal component analyses. Spatial patterns of the most frequently sighted species (California sea lion Zalophus californianus, northern fur seal Callorhinus ursinus, Pacific white-sided dolphin Lagenorhyncus obliquidens, Dall's porpoise Phocoenoides dalli, harbor porpoise Phocoena phocoena,and humpback whale Megaptera novaeangliae) were related to bathymetry and changing ocean climate, and were likely to have been mediated by changes in prey availability. Temporal changes were related to migration and significant differences in ocean structure resulting from both local and large-scale processes.

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Section: El Niñomentioning

confidence: 99%

Marine mammal occurrence and ocean climate off central California, 1986 to 1994 and 1997 to 1999

Keiper¹,

Ainley²,

Allen³

et al. 2005

Mar. Ecol. Prog. Ser.

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show abstract

“…That adult males are least migratory is indicated by their occurrence in large numbers at traditional all-male hauling grounds on Rudder, Meechken, Arakamchechen, Big Diomede, and Round islands (and formerly, on the Pribilof Islands) throughout the summer. Female northern fur seals (Callorhinus ursinus) also are more strongly migratory than males (Kenyon and Wilke 1953), and this is true also of many species of birds. Dorst (1961) suggested that the migration of males may be inhibited by gonadal recrudescence following the breeding season.…”

Section: Environmental Factorsmentioning

confidence: 99%

Ecology and Biology of the Pacific Walrus,Odobenus rosmarus divergensIlliger

Fay¹

1982

North American Fauna

394

567

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“…Approximately 70% of the world's population of northern fur seals breeds on the Pribilof Islands, Alaska, in the eastern Bering Sea (Loughlin et al 1994). From December to April, northern fur seals are virtually absent from the breeding islands and range throughout the North Pacific from the Bering Sea southward to southern California and Japan and perhaps all points between (Kenyon & Wilke 1953, Ream et al 2005.…”

Section: Introductionmentioning

confidence: 99%

Post-weaning migration of northern fur seal Callorhinus ursinus pups from the Pribilof Islands, Alaska

Baker¹

2007

Mar. Ecol. Prog. Ser.

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Migration of the Northern Fur Seal, Callorhinus ursinus

Cited by 66 publications

References 9 publications

Marine mammal occurrence and ocean climate off central California, 1986 to 1994 and 1997 to 1999

Marine mammal occurrence and ocean climate off central California, 1986 to 1994 and 1997 to 1999

Ecology and Biology of the Pacific Walrus,Odobenus rosmarus divergensIlliger

Post-weaning migration of northern fur seal Callorhinus ursinus pups from the Pribilof Islands, Alaska

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