. Bulletin of the British Ornithologists Club. Jose Maria C. da Silva et al. 191 Bull. 2002 122(3) single biological species, because the strong similarities in plumage colouration among close relatives may indicate a potential to interbreed if these taxa came into contact. At least at this stage of knowledge on the natural history and distribution of Xiphocolaptes, X. carajaensis should be ranked as a subspecies of X. promeropirhynchus or X. orenocensis under the biological species concept. The region between the rivers Xingu and Tocantins deserves to be classified as an area of endemi
. Bulletin of the British Ornithologists Club. Jose Maria C. da Silva et al. 191 Bull. 2002 122(3) single biological species, because the strong similarities in plumage colouration among close relatives may indicate a potential to interbreed if these taxa came into contact. At least at this stage of knowledge on the natural history and distribution of Xiphocolaptes, X. carajaensis should be ranked as a subspecies of X. promeropirhynchus or X. orenocensis under the biological species concept. The region between the rivers Xingu and Tocantins deserves to be classified as an area of endemism for birds In the most recent attempt to identify the South American avian centres of endemism, Cracraft (1985) recognized 33 centres, four of which are in the Amazonian forests south of the Amazon: South Amazon (Inambari) Centre, Rondonia Centre, Para Centre and Belem (Maranhao) Centre. The region between the rivers Xingu and Tocantins/Araguaia was grouped with the region between the rivers Tapajos and Xingu into the Para Centre (Figure 2). Cracraft (1985) listed 20 taxa as endemic to the Para Centre. Some of them ( Piprapipra separabilis) occur indeed on both banks of the Xingu, but others occur only on one bank ( Pipra vilasboasi). Recent studies have led to several taxonomic discoveries in the region between the rivers Xingu and Tocantins/Araguaia, supporting the case for this region to be ranked as a distinct centre of avian endemism. Endemic taxa that support this suggestion include: Psophia viridis inter]ecta, Pyrrhuraperlata. Figure 2. Distribution of Xiphocolaptes carajaensis in relation to avian areas of endemism identified for Amazonia. Duida and Gra-Sabana are sub-areas of endemism of the Panteupui area of endemism. Xingu and Tapajos areas were originally grouped into a single region named Para. The localities of X. carajaensis are as follows: Serra dos Carajas (star), Xingu (triangle), Itupiranga (circle) and Sao Joao do Araguaia (square).. Please note th
Size: 1870px × 1336px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishornithologi, bookpublisheroxfordclarendonpress
