| 要旨トップ | 目次 | 日本生態学会第58回全国大会 (2011年3月,札幌) 講演要旨


一般講演(ポスター発表) P2-176

Temporal change in spatial genetic structure of the sika deer (Cervus nippon) for over 15 years in Hokkaido, Japan

Ou Wei (EES, Hokkaido Univ.), Takekawa, S. (EES, Hokkaido Univ.), Nagata, J. (FFPRI), Masuda, R. (GSS, Hokkaido Univ.), Uno, H. (HIES), Saitoh, T. (FSC, Hokkaido Univ.)

The population of the sika deer (Cervus nippon) has been expanding and caused severe damage to the vegetation in Hokkaido, Japan. According to the increase in abundance, their distribution range has also expanded. Has the spatial structure of the population changed during the expansion? We investigated spatial genetic structure of this population using microsatellites (15 loci) and mitochondrial DNA (D-loop) for two periods (204 samples for 1991-1996 and 211 samples for 2008-2010). We used georeferenced multilocus microsatellite genotypes and mitochondrial DNA in spatially implicit (STRUCTURE) and spatially explicit (GENELAND) models to characterize patterns of landscape genetic structure. Preliminary results of GENELAND indicate the existence of 2 units (microsatellites) and 4 units (mtDNA) in 1991-1996, while 4 genetic units (microsatellites) and 4 units (mtDNA) in 2008-2009. Levels of genetic diversity of sika deer were very low in both two periods. These results suggest that the population structure significantly changed for over 15 years and potential barriers to the movement of male and female sika deer were different.


日本生態学会