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Title: 冬眠しないトガリネズミの越冬戦略
Other Titles: Wintering strategy of soricine shrews, which do not hibernate
Authors: 大舘, 智志1 Browse this author →KAKEN DB
Authors(alt): Ohdachi, Satoshi D.1
Keywords: トガリネズミ
soricine shrew
Dehnelʼs phenomenon
metabolic rate
food resource
Issue Date: 20-Mar-2023
Publisher: 低温科学第81巻編集委員会
Journal Title: 低温科学
Journal Title(alt): Low Temperature Science
Volume: 81
Start Page: 81
End Page: 88
Abstract: 北海道などの寒冷地域に生息し冬季間も活動するトガリネズミ類の越冬生態について概観した.トガリネズミ類はおもに土壌表面や土壌中に生息している小型無脊椎動物を食べている.トガリネズミ類では冬期には餌資源量の減少が考えられるが,ある程度の安定した餌の供給は保たれていると考えられている.またトガリネズミ類では冬期には一旦,体サイズや頭骨サイズが縮小し,越冬後に急激にサイズが増大する.この現象はデーネル現象と言われており,トガリネズミ類の越冬生態と密接に関わっていると思われるが,そのメカニズムはほとんど解明されていない.
Wintering ecology of soricine shrews, which are active in winter in cold regions, was reviewed. Shrews mainly feed on small invertebrates on and in soil. Food resource for shrews seems to be reduced in winter but stable food supply may be maintained during winter. Sizes of body and skull tend to become smaller in winter of the birth year and then rapidly become larger toward summer in soricine shrews. It is called Dehnelʼs phenomenon and seems to be related to their wintering ecology, but the mechanism to explain it has not been clarified.
Description: 第二章:恒温動物(哺乳類)※正誤表あり
Type: bulletin (article)
Appears in Collections:低温科学 = Low Temperature Science > 第81巻

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