Distribution and abundance of the largha seal (Phoca largha Pall.) on the coast of Primorye Region (Russia): a literature review and survey report

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概要

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• Long-term studies (1963-2000) of a local population of the largha seal Phoca largha in the waters of Primorye Region were reviewed. In winter, largha seals were observed mainly in the southern coast of Primorye (the Peter the Great Bay: PGB). In contrast, abundance was low along the eastern coast of Primorye, where waters were mostly open throughout the winter. In summer and fall, numbers decreased in PGB, whereas those along the eastern coast of Primorye increased. This might reflect seal movements between PGB and the eastern coast. The majority of the coastal haul-out sites were confined to the protected zone of the Far Eastern Marine Reserve in PGB, and seals used PGB haul-out sites year round. The results of seal tagging studies on the Rimskii-Korsakov Islands in PGB, suggest that largha seals are able to move far to the north from PGB, reaching the Sea of Okhotsk waters and the Pacific coast of Hokkaido, Japan. Population size was estimated recently to be about one thousand individuals. Further growth of the population may be limited by incidental take by the trap net fishery in PGB waters in winter, which accounts for up to 10% of annual mortality.

• 日本哺乳類学会の論文
• 2002-06-01

著者

• Mizuno Ayako

  Laboratory Of Parasitology Department Of Disease Control School Of Veterinary Medicine Hokkaido Univ

• Mizuno Ayako

  Laboratory Of Wildlife Biology Graduate School Of Veterinary Medicine Hokkaido Universityi

• TRUKHIN Alexey

  V. I. Ilichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences

• Trukhin Alexey

  V. I. Ilichev Pacific Oceanological Institute Far Eastern Branch Russian Academy Of Sciences

関連論文

• Population Genetic Structure of the Spotted Seal Phoca largha along the Coast of Hokkaido, Based on Mitochondrial DNA Sequences(Animal Diversity and Evolution)
• Distribution and abundance of spotted seals Phoca largha and ribbon seals Phoca fasciata in the southern Sea of Okhotsk
• Distribution of the spotted seal Phoca largha along the coast of Hokkaido, Japan
• History and status of sea otters, Enhydra lutris along the coast of Hokkaido, Japan
• Ecological study on the hookworm, Uncinaria lucasi, of northern fur seal, Callorhynus ursinus, in bering island, russia
• Distribution and abundance of the largha seal (Phoca largha Pall.) on the coast of Primorye Region (Russia): a literature review and survey report
• Studies on population ecology of the spotted seal, Phoca largha, in the coastal waters of Hokkaido, Japan
• Assessment of seasonal abundance of the spotted seal (Phoca largha) from incidental takes in fishing nets along the Notsuke Peninsula, Hokkaido
• Immunohistochemical Localization of Steroidogenic Enzymes and Prolactin Receptors in the Corpus Luteum and Placenta of Spotted Seals(Phoca largha) during Late Pregnancy.

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