Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology
Received: 9 March 2021
Accepted: 15 September 2021
First Online: 2 October 2021
: We obtained permission from Hiroshima Prefecture to collect the wood mice samples in the Innoshima island (no approval code from the prefecture) and conducted protocols approved by the Animal Care and Use Committee of Fukuyama University (approval code: H30-Animal-8). We followed the guidelines of the Procedure of Obtaining Mammal Specimens established by the Mammal Society of Japan (ExternalRef removed; accessed 1 June 2021).
: All authors contributed to the study as described in the author’s contribution above, read the manuscript, and discussed the contents.
: All authors agreed with the submission and publication of this manuscript in Mammal Research.<b>Competing interests (include appropriate disclosures).</b>The authors declare no competing interests.