Journal article
How do rare Boronia species differ from their more widespread congeners?
Australian Journal of Botany, Vol.53(2), pp.171-183
2005
Abstract
The vulnerable Boronia keysii Domin. (Rutaceae; BK) and the rare B. rivularis White. (BR), endemic to the Sunshine Coast region of Queensland, and the more widespread B. safrolifera Cheel. (BS) and B. falcifolia (BF), were studied. The taxonomic distinctiveness between the morphologically similar B. rivularis and its more southern congener B. safrolifera had previously been in question. This study clearly confirmed the long genetic separation of these two species. High levels of reproductive activity (%R) were observed in both of the threatened species (B. keysii: %R = 84; B. rivularis: %R = 66), which were also found to differ fundamentally in response to fire (obligate seed regenerators) from the more widespread species (facultative resprouters). Genetic diversity was not consistently related to rarity since B. keysii (vulnerable; He = 0.282) and B. falcifolia (common; He = 0.294) had significantly higher genetic diversity than did B. rivularis (rare; He = 0.155) and B. safrolifera (common; He = 0.197). There was no relationship between population differentiation and geographic distribution of species since B. keysii (FST = 0.293) and B. safrolifera (FST = 0.283) exhibited lower between-population diversity than did B. rivularis (FST = 0.360) and B. falcifolia (FST = 0.324). The average number of migrants per generation was less than one in all species (Nm = 0.604 for BK; 0.444 for BR; 0.634 for BS; 0.522 for BF). All four species are effectively inbred; however, B. keysii (F = 0.85) and B. falcifolia (F = 0.90) had significantly higher levels of inbreeding than did B. rivularis (F = 0.621) and B. safrolifera (F = 0.472), indicating that inbreeding was not determined by conservation status.
Details
- Title
- How do rare Boronia species differ from their more widespread congeners?
- Authors
- Alison Shapcott (Author) - University of the Sunshine Coast - Faculty of Science, Health and EducationRobert W Lamont (Author) - University of the Sunshine Coast - Faculty of Science, Health and EducationAmanda Thomson (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
- Publication details
- Australian Journal of Botany, Vol.53(2), pp.171-183
- Publisher
- C S I R O Publishing
- Date published
- 2005
- DOI
- 10.1071/BT03183
- ISSN
- 0067-1924
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy; Technical and Work Integrated Learning (WIL) Operations - Legacy; School of Science, Technology and Engineering; School of Law and Society; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99448733302621
- Output Type
- Journal article
Metrics
1 File views/ downloads
822 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Web Of Science research areas
- Plant Sciences