Few Decades of Habitat Fragmentation has Reduced Population Genetic Diversity: A Case Study of Landscape Genetics of the Large Japanese Field Mouse, Apodemus speciosus

The effects of a few decades of habitat fragmentation on the population genetic diversity of the large Japanese field mouse, Apodemus speciosus, in the forest region around Fukuyama University was assessed with approximate 300 bp nucleotide sequences of the mitochondrial D-loop region. Two independe...

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Bibliographic Details
Published inMammal study Vol. 1; no. 39; pp. 1 - 10
Main Authors Sato, Jun J, Kawakami Tsukasa, Tasaka Yurina, Tamenishi Masaya, Yamaguchi Yasunori
Format Journal Article
LanguageEnglish
Published UniBio Press 01.03.2014
Subjects
aerial photography
Apodemus speciosus
case studies
D-loop
extinction risk
forests
gene flow
genetic diversity
genetic variation
habitat fragmentation
habitats
haplotypes
landscapes
mice
nucleotide sequences
wildlife
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ISSN1343-4152
1348-6160
DOI10.3106/041.039.0102

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Summary:The effects of a few decades of habitat fragmentation on the population genetic diversity of the large Japanese field mouse, Apodemus speciosus, in the forest region around Fukuyama University was assessed with approximate 300 bp nucleotide sequences of the mitochondrial D-loop region. Two independently isolated internal populations within the campus showed a smaller number of haplotypes and lower haplotype and nucleotide diversity indices compared to those inhabiting a wide external forest area. Based on the Hst index, significant genetic differentiation was observed between geographically closely residing external and internal populations but not between distantly residing external populations, suggesting the presence of strong physical barriers between the external and internal populations. Fine-scale changes in the landscape configuration recorded in aerial photographs of Fukuyama University revealed plausible physical barriers and a correlation between isolation time and genetic diversity. The results suggest that the population genetic properties of forest dwelling mammals are sensitive to a few decades of short-term forest fragmentation created by artificial construction. Exploitation by humans should be conducted in harmony with wildlife ecology, such as by maintaining corridors, to achieve a wide habitat area for gene flow.
Bibliography:http://dx.doi.org/10.3106%2F041.039.0102
ISSN:1343-4152
1348-6160
DOI:10.3106/041.039.0102