Honyurui Kagaku (Mammalian Science)
Online ISSN : 1881-526X
Print ISSN : 0385-437X
ISSN-L : 0385-437X
Volume 43, Issue 1
Displaying 1-9 of 9 articles from this issue
Review
  • Halik Mahmut, Ryuichi Masuda, Abdukadir Ablimit, Noriyuki Ohtaishi
    2003 Volume 43 Issue 1 Pages 1-17
    Published: 2003
    Released on J-STAGE: June 11, 2008
    JOURNAL FREE ACCESS
    Mammals of the Palearctic have evolved in the region from western Tibetan Plateau to Xinjiang of China. So, it is important to study the fauna of this region for understanding evolutionary history of animal groups in the Palearctic. The mammalian fauna of Xinjiang was geographically isolated into southern and northern as well as eastern and western communities, by retrogression of the Tethys Sea accompanying upheaval of the Tibetan Plateau, the drying out of central Asia, and influences of glacial climates. Severe changes in the natural environments of the Cenozoic era gradually formed the present zoogeographical and ecological features in Xinjiang. Seven orders, 23 families, and 136 species of mammals are distributed over Xinjiang's complex environment. After the natural conservation law was established in 1980, 20 natural reserves have been set up. Much data on rodents were reported which are related to livestock farming and infectious diseases. However, because influences via human activities have resulted in decreasing and fragmentation of habitats of the mammals, conservation and management for endangered species together with natural environments are urgently needed. The origins, pylogeographical history, morphological and ecological features, and genetic diversity should be particularly investigated in detail. It is very important to conserve and manage wild animals, and recover habitat environments, based on the biological data.
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Original Article
  • Shusei Arai, Takayuki Adachi, Yoshiko Kuwahara, Kiyoko Yoshida
    2003 Volume 43 Issue 1 Pages 19-28
    Published: 2003
    Released on J-STAGE: June 11, 2008
    JOURNAL FREE ACCESS
    Food habit of the Japanese marten, Martes melampus, was studied at Kuju Highland of Oita Prefecture in Kyushu, Japan during 1997-2001. Food items were determined by analysis of contents in 1387 feces. Mean frequencies of occurrence of animals in feces was 79.7% and plants in feces was 51.1% for five years. Diet of the marten was mainly insects, mammals, crustaceans and 36 plant species. High frequencies were recognized for insects from June to October, for mammals in February, April and December, for crustaceans in August and October and for plants in October and December. The marten is omnivorous showing a high level of food diversity throughout the year, and assumed to select their food from a wide range depending on the availability in forest, especially riverside forests, boundary forests and edges of the forest in Kuju Highland.
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  • Takamichi Jogahara, Go Ogura, Takeshi Sasaki, Kenji Takehara, Yoshitsu ...
    2003 Volume 43 Issue 1 Pages 29-37
    Published: 2003
    Released on J-STAGE: June 11, 2008
    JOURNAL FREE ACCESS
    The food habits of feral cats (Felis catus) roaming through forests and domestic cats in villages in the Yambaru area, northern part of Okinawa Island, Japan, and their impacts on indigenous animals were investigated by analyzing their faeces. The feral cats mainly prey on insects, mammals, birds and reptiles, while the domestic cats mainly eat food provided by humans and insects. Traces of threatened animals, such as the Okinawa Woodpecker (Sapheopipo noguchii) which is listed in the Red Data Book, were also found in the faeces of the feral cats. The feral cats are able to prey on almost any of the terrestrial animals in the ecosystem of Okinawa Island. To protect the wildlife in the Yambaru area from the feral cats we need to exclude feral cats and to appeal to local people not to abandon their pet cats.
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Short Communication
  • Dai Fukui, Kishio Maeda, Masahiko Sato, Kuniko Kawai
    2002 Volume 43 Issue 1 Pages 39-43
    Published: 2002
    Released on J-STAGE: June 11, 2008
    JOURNAL FREE ACCESS
    We caught a Japanese House-dwelling bat, Pipisterellus abramus in Hakodate, Hokkaido. External characters and echolocation call structure of Hakodate's P. abramus were quite similar to Kanagawa's P. abramus. Reproduction in Hokkaido is confirmed because of pregnancy in the captured bat. There is a possibility of extending the distribution of P. abramus. Therefore it seems to be necessary to observe future expansion processes.
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  • Shoichi Emura, Daisuke Hayakawa, Huayue Chen, Shizuko Shoumura
    2003 Volume 43 Issue 1 Pages 45-50
    Published: 2003
    Released on J-STAGE: June 11, 2008
    JOURNAL FREE ACCESS
    The dorsal lingual surfaces of the newborn and adult lion were examined by gross anatomical and scanning electron microscopy (SEM). Filiform, fungiform and vallate papillae were observed. The filiform papillae were distributed over the entire dorsal surface of the tongue. The fungiform papillae were present in rounded bodies, and densely distributed on the lingual apex. There were 5 vallate papillae in newborn and 8 vallate papillae in adult on borderline between the lingual body and lingual radix. No foliate papillae were seen on the dorsal surface in both stages. The rudiments of fungiform papillae and vallate papillae showed earlier development than those of the filiform papillae.
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Report
  • Hisashi Abe
    2003 Volume 43 Issue 1 Pages 51-65
    Published: 2003
    Released on J-STAGE: June 11, 2008
    JOURNAL FREE ACCESS
    Trapping by snap-traps (8.5cm wide, 14cm long) with raw fish meats was carried out at 191 sites along 63 river systems ranging from Honshu, Kyushu, Shikoku, to Oki, Japan. One hundred and thirty-nine specimens of the Japanese water shrew, Chimarrogale platycephala, were obtained from 86 sites in 177 sites in Honshu and Kyushu. No specimens were found in Shikoku and Oki Islands. The relationships between the number of traps set at each trapline and the number of water shrewes caught revealed that the water shrew was a territorial creature. The lower limits in the altitudinal distribution of habitat were lower in northern districts compared with southern habitats. The upper limits appeared to be depending on the altitude of the uppermost stream of each river. Field observations suggested that the water shrew had plural activity cycles in a day. Preferable habitats for the water shrew were swift streams or rivers with abundant shelters on the river bed; the shelters usually consist of boulders, large rocks or fallen logs with underside cavities or slits and/or of water-eroded cavities made along river bank. There were many instances in which no water shrews were trapped, although the habitats retained a full composition of the above elements. In many of these cases, engineering works such as construction of roads, dams, pastures, ski grounds, etc. were observed on the upper streams or on the catchment of the river. These construction works produced muddy water flow which affected the aquatic insects that the water shrew fed on. These observations suggested that the water shrew was very sensitive to the artificial change in the river environments.
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Reports of the Public Symposium of the MSJ Annual Meeting
Reports of the MSJ Annual Meeting
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