Molecular evidence for hybridisation between the two living species of South American ratites: potential conservation implications

Frédéric Delsuc (1) , Mariella Superina (2, 3) , Guillermo Ferraris (3) , Marie-Ka Tilak (1) , Emmanuel J.P. Douzery (1)

1 UMR ISEM - Institut des Sciences de l'Evolution de Montpellier
2 Biological Science Department
3 (EICAS) - Estación de Incubación y Cría de Aves Silvestres

In a private wildlife research facility and rhea farm of Argentina, artificially incubated eggs of putative hybrid origin between the Greater Rhea (Rhea americana) and the Lesser Rhea (Rhea pennata) hatched and gave birth to healthy chicks. Molecular genotyping by the analysis of mitochondrial Cytochrome b (Cyt b) and nuclear Chromo- Helicase DNA binding (CHD1) gene sequences confirmed the hybrid origin of these chicks which were molecularly sexed as females. The possibility of hybridisation argues for careful management of captive populations of these species, especially if individuals are to be released in the wild for conservation purposes.

Domaines: Biodiversité et Ecologie

Frédéric Delsuc, Mariella Superina, Guillermo Ferraris, Marie-Ka Tilak, Emmanuel J.P. Douzery. Molecular evidence for hybridisation between the two living species of South American ratites: potential conservation implications. Conservation Genetics, 2007, 8, pp.503-507. ⟨10.1007/s10592-006-9179-9⟩. ⟨halsde-00315516⟩