Literaturdatenbank
Literaturdatenbank |
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Salinas Sugráñez, M. (2006). Caracterización genética de las tortugas terrestres (testudo graeca y testudo hermanni) de la península iberica para su reintroducción al medio natural. Unpublished thesis , Universitat Autònoma de Barcelona, Barcelona.
Added by: Sarina Wunderlich (30 Jun 2012 22:01:49 UTC) |
| Resource type: Thesis/Dissertation BibTeX citation key: SalinasSugrez2006 View all bibliographic details  |
Categories: General Keywords: Genetik = genetics, Schildkröten = turtles + tortoises, Systematik = taxonomy, Testudinidae, Testudo, Testudo graeca, Testudo hermanni Creators: Salinas Sugráñez Publisher: Universitat Autònoma de Barcelona (Barcelona) |
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Tortoises (Testudinidae), clade of terrestrial turtles, face serious threats to survival throughout their distribution range. Among all Testudo specimens, only T. graeca and T. hermanni can be considered as native inhabitants of Spain. Both species are included in the list of species protected by CITES Appendix II besides to be protected at European level by a more restrictive trade regulation (CE 1332/2005). However, the number of wild specimens is steadily decreasing due to illegal capture and uncontrolled release of exotic specimens what means a risk of genetic contamination and disease transmission. The main objective of this research is to analyse the genetic variation between T. graeca and T. hermanni with the aim of reintroducing captive pure specimens into the wild. We have addressed this issue by sequencing two mitochondrial DNA regions (12s rRNA and cytocrome b) and by genotyping seventeen nuclear microsatellite loci in 121 samples of different origins. Clear differences between T. graeca and T. hermanni have been found using both, mitochondrial DNA genes and microsatellite markers, but only the microsatellite analysis allows hybrid detection and differentiation of T. graeca from Spain versus T. graeca from Morocco. Once we have seen these differences between the two populations on both sides of the Straits of Gibraltar, we propose T. graeca from Spain as differentiated Management Units (MUs) in order to preserve the genetic identity in case of an incipient evolutionary lineage.
Added by: Sarina Wunderlich |