論文

基本情報

氏名 目加田 和之
氏名(カナ) メカダ カズユキ
氏名(英語) Mekada Kazuyuki
所属 理学部 動物学科
職名 教授
researchmap研究者コード 5000072882
researchmap機関 岡山理科大学

題名

Formation and diachronic change of placental scars in the house shrew (Suncus murinus).

単著・共著の別

共著

著者

K. Nakano, K. Mekada.

概要

In the present study, diachronic changes in fresh and stained placental scars of postpartum house shrews (Suncus murinus) were studied and compared with the actual number of offspring. In non- stained fresh uteri, the placental scars were barely visible externally, except in some exceptional cases. In stained uteri, placental scars were observed in all specimens, even in the oldest animals evaluated (12 months postpartum). The study estimated the number of offspring and time of parturition using the degree of staining in the scars and the change in their forms.  As the time postpartum increased, the stained placental scars became discoloured and shrank, making it difficult to distinguish between the scars from normal parturition and those that formed following halted development after implantation. Placental scars provided an invaluable method for estimating the female reproductive state in wild mammals. In captive house shrews, however, placental scars were barely detected in non- stained fresh uteri. Moreover, placental scars were observed in older animals at 12 months postpartum. It can be concluded that, it is not feasible to estimate the number of offspring or time of parturition based on placental scars in wild shrews, which are believed to undergo multiple parturitions a year.

発表雑誌等の名称

Asian Journal of Research in Zoology

出版者

1

開始ページ

1

終了ページ

7

発行又は発表の年月

2018/09

査読の有無

有り

招待の有無

無し

記述言語

英語

掲載種別

研究論文(学術雑誌)

ISSN

ID:DOI

ID:NAID(CiNiiのID)

ID:PMID

URL

JGlobalID

arXiv ID

ORCIDのPut Code

DBLP ID