Data from: Phenotypic and genotypic variation across a stable white-eye (Zosterops sp.) hybrid zone in central South Africa
Oatley, Graeme, University of California, Berkeley
de Swardt, Dawie H.
Nuttal, Rick J.
Crowe, Timothy M., University of Cape Town
Bowie, Rauri C.K., University of California, Berkeley
Published Jan 31, 2017 on Dryad.
Cite this dataset
Oatley, Graeme et al. (2017). Data from: Phenotypic and genotypic variation across a stable white-eye (Zosterops sp.) hybrid zone in central South Africa [Dataset]. Dryad. https://doi.org/10.5061/dryad.33863
The interbreeding of two species after a period of separation (secondary contact) most often results in stable areas of hybridization or tension zones characterized by selection against hybrid individuals. Three plumage forms of Zosterops meet and interbreed in central South Africa. Here we examine how phenotypic measures (biometric and plumage) and genotypic markers (mitochondrial and nuclear DNA) change through a putative hybrid zone located in the area where the ranges of the Orange River white-eye Zosterops pallidus and a subspecies of the Cape white-eye Zosterops virens capensis meet. Four of the five sequenced loci (i.e. ATP6, MUSK, GADPH and TGF-β2) showed strong divergence and differentiation between allopatric parental populations, whereas the sex-linked CHD1Z locus exhibited high homogeneity. Microsatellite data also distinguished between pure Z. pallidus and Z. v. capensis populations. Together, the nuclear data (introns and microsatellites) identified at least 12 hybrid individuals as later generation hybrids (i.e. F2 or backcrosses), and no F1 hybrids were detected. As genetic incompatibility does not appear to play a role in restricting this stable hybrid zone, it is likely that environmental conditions including biome type and edge effect are constraining hybrid zone movement.
Microsatellite genotypes Zosterops hybrid zone Dryad
Microsatellite genotype data for 116 Zosterops individuals sampled across a hybrid zone in central South Africa. "sample" refers to the sample name of each individual and "population" refers to the location of sampling (see manuscript for exact location details). The remaining columns (i.e. Zse 16, Zse19 etc) refer to the names microsatellite markers genotyped
Morphometric data Zosterops hybrid zone dryad
Morphometric data set of Zosterops individuals sampled across a hybrid zone in central South Africa. Individual specimen numbers and sampling locality are provided. Five standard avian measures were taken (mass, wing-, tarsus-, bill- and tail-length. Four measures of plumage were taken, the percentage underpart colouration of yellow, white, grey and cinnamon. Colour measures were obtained from photographs of birds taken in the field or of prepared museum specimens.