Body temperature profiles of the Korean field mouse Apodemus peninsulae during winter aggregation

• Masaki Mika

  Laboratory of Physiological Ecology, Faculty of Agriculture, University of Miyazaki

• Koshimoto Chihiro

  Department of Bio-resources, Division of Biotechnology, Frontier Science Research Center, University of Miyazaki

• Tsuchiya Kimiyuki

  Laboratory of Wild Animals, Faculty of Agriculture, Tokyo University of Agriculture

• Nishiwaki Aya

  Laboratory of Restoration Ecology, Faculty of Agriculture, University of Miyazaki

• Morita Tetsuo

  Laboratory of Physiological Ecology, Faculty of Agriculture, University of Miyazaki

書誌事項

タイトル別名

• Body temperature profiles of the Korean field mouse <i>Apodemus peninsulae</i> during winter aggregation

抄録

Factors affecting body temperature (Tb) fluctuations in winter were examined in Korean field mice Apodemus peninsulae. Animals were maintained under the following three conditions to mimic autumn followed by winter, plus two modes of behaviour, solitary and grouped, in winter: 1) short day (8 Light:16 Dark) at 25 ± 2°C and solitary, for 12 weeks towards the end of which their Tb was recorded; 2) constant darkness (DD) at 4 ± 2°C and solitary, for a week; and 3) DD at 4 ± 2°C and in groups (two or three animals in a cage), for about 10 days. Using implanted data loggers Tb was monitored in 13 mice that were exposed to these three conditions in sequence. When the animals' body temperature was below 30°C, it was assumed that they were torpid according to the bimodal pattern of minimum daily Tb. The maximum period of daily torpor was 390 min/day, and torpor was exhibited by seven of the thirteen animals exposed to conditions-2) and -3). Since torpor was found in one mouse even under condition-1), without any environmental stressors, it is suggested that this species is prone to spontaneous daily torpor. Cohabitation tended to synchronize Tb fluctuations irrespective of the state of the animals, torpid or not. Thus, this species may aggregate and synchronize torpor and/or Tb fluctuations to reduce heat loss during winter.<br>

収録刊行物

• Mammal Study

  Mammal Study 30 (1), 33-40, 2005

  日本哺乳類学会

キーワード

• <i>Apodemus peninsulae</i>
• body temperature fluctuation
• daily torpor
• huddling
• synchronization

詳細情報

• CRID: 1390001204673424256
• NII論文ID: 10016577514
• NII書誌ID: AA11185060
• DOI: 10.3106/1348-6160(2005)30[33:btpotk]2.0.co;2
• ISSN: 13486160
• ISSN: 13434152
• HANDLE: 10458/4795
• NDL書誌ID: 7345432
• Web Site: https://miyazaki-u.repo.nii.ac.jp/records/649
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7345432
• Web Site: http://www.bioone.org/doi/pdf/10.3106/1348-6160(2005)30%5B33:BTPOTK%5D2.0.CO;2
• Web Site: https://search.jamas.or.jp/link/ui/2006060623
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可