Conservation Genetics

, Volume 15, Issue 5, pp 1243–1257

Conflict in outcomes for conservation based on population genetic diversity and genetic divergence approaches: a case study in the Japanese relictual conifer Sciadopitys verticillata (Sciadopityaceae)

  • James R. P. Worth
  • Masashi Yokogawa
  • Andrés Pérez-Figueroa
  • Yoshihiko Tsumura
  • Nobuhiro Tomaru
  • Jasmine K. Janes
  • Yuji Isagi
Research Article

DOI: 10.1007/s10592-014-0615-y

Cite this article as:
Worth, J.R.P., Yokogawa, M., Pérez-Figueroa, A. et al. Conserv Genet (2014) 15: 1243. doi:10.1007/s10592-014-0615-y

Abstract

A major goal of conservation genetics is to determine which specific populations are most crucial for in situ or ex situ conservation. Genetic divergence and diversity are the two foundations by which priorities for conservation are typically determined. However, these measures may be confounded when past bottlenecks reduce genetic diversity of populations but also lead to their divergence. This study examines the potential conflicts in population prioritization for a relictual Japanese endemic conifer, Sciadopitys verticillata using nuclear microsatellites. High genetic structuring at the nuclear level compared to many other conifers (Fst = 0.129) was observed across the species range along with significant differences in genetic diversity between southern and northern populations. Conflict among genetic diversity and divergence population prioritization methods was observed in populations at the southwestern range edge of Kyushu and Chugoku, which were the most genetically distinct but also harboured the lowest diversity (Kyushu, He = 0.288, Ar = 2.172, and Chugoku, He = 0.222, Ar = 2.010). These populations contained only a subset of the genetic diversity found in Central Honshu and the Kii Peninsula (Central Honshu, He = 0.347, Ar = 2.707 and the Kii Peninsula, He = 0.337, Ar = 2.683), suggesting a reduction in genetic diversity as a result of bottlenecks. To determine if these highly bottlenecked populations in southwestern Japan are on the trajectory to extinction, or, conversely, if they harbour important genetic variation that has been fixed at the southwestern edge of the species range, common garden experiments are recommended in the future.

Keywords

Sciadopitys verticillata Peripheral populations Centre of diversity Nuclear microsatellites Japanese temperate conifer Conservation genetics 

Supplementary material

10592_2014_615_MOESM1_ESM.docx (318 kb)
Supplementary material 1 (DOCX 318 kb)

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • James R. P. Worth
    • 1
  • Masashi Yokogawa
    • 2
  • Andrés Pérez-Figueroa
    • 3
  • Yoshihiko Tsumura
    • 4
  • Nobuhiro Tomaru
    • 5
  • Jasmine K. Janes
    • 6
  • Yuji Isagi
    • 7
  1. 1.School of Plant ScienceUniversity of TasmaniaHobartAustralia
  2. 2.Laboratory of BotanyOsaka Museum of Natural HistoryOsakaJapan
  3. 3.Department of Biochemistry, Genetics and Immunology, Faculty of BiologyUniversity of VigoPontevedraSpain
  4. 4.Department of Forest GeneticsForestry and Forest Products Research InstituteTsukubaJapan
  5. 5.Graduate School of Bioagricultural SciencesNagoya UniversityNagoyaJapan
  6. 6.Department of Biological SciencesUniversity of AlbertaEdmontonCanada
  7. 7.Laboratory of Forest Biology, Division of Forest and Biomaterials Science, Graduate School of AgricultureKyoto UniversityKyotoJapan