Interspecific hybridisation in rhinoceroses: Confirmation of a Black × White rhinoceros hybrid by karyotype, fluorescence in situ hybridisation (FISH) and microsatellite analysis
Black and white rhinoceroses are among the most charismatic megaherbivores and have become flagship species for international conservation. They are often subject to intense management that includes being compressed unnaturally in space and density. We present chromosomal and microsatellite evidence to substantiate the first recorded instance of interspecific hybridisation between them. The data suggest that the genetic integrity of the African rhinoceros species probably depends on differences in behavioural and ecological preferences that offer semipermeable reproductive isolation. We caution against the retention of both species in captive and other population situations where disruption of species-specific behaviour patterns may result if there is an unnatural composition in terms of age and sex, and where access to conspecific mates is restricted or absent.
KeywordsAfrican rhinoceroses FISH hybrids microsatellites
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- Emslie, RH, Brooks, PM 1999African Rhino: Status Survey and Conservation Action PlanIUCN/SSC African Rhino Specialist Group IUCN GlandSwitzerland and Cambridge, UKix + 92ppGoogle Scholar
- Foose T (1993) Global management of rhinos. In Proceedings of a Conference: Rhinoceros Biology and Conservation (ed. Ryder OA), pp 32–47. Zoological Society of San Diego. Google Scholar
- Gray, AP 1971Mammalian hybridsCommonwealth Agricultural Bureaux SloughEnglandGoogle Scholar
- Leader-Williams N (1993) Theory and pragmatism in the conservation of rhinos. In Proceedings of a Conference: Rhinoceros Biology and Conservation (ed. Ryder OA), pp 69–81. Zoological Society of San Diego.Google Scholar
- Leader-Williams, N, Brett, RA, Brookes, M, Craig, I, duToit, RF, Emslie, RH, Knight, MH, Stanley-Price, MR, Stockil, C 1997A scheme for differentiating and defining the different situations under which live rhinos are conservedPachyderm232428Google Scholar
- Lindemann H (1982) African rhinoceroses in captivity. Thesis, University of Copenhagen.Google Scholar
- Owen-Smith RN (1988) Megaherbivores–The Influence of Very Large Body Size on Ecology. Cambridge University Press.Google Scholar
- Smithers, R H N 1983The Mammals of the Southern African SubregionUniversity of PretoriaPretoriaGoogle Scholar
- Stanley Price MR (1993) What will it take to save the rhino. In Proceedings of A Conference: Rhinoceros Biology and Conservation (ed. Ryder OA), pp. 48–68. Zoological Society of San Diego. Google Scholar
- Trifonov, V, Yang, F, Ferguson-Smith, MA, Robinson, TJ 2003Chromosome painting in the Perissodactyla: Delimitation of homologous regions in Burchell’s zebra (Equus burchelli) and the White (Ceratotherium simum) and Black Rhinoceros (Diceros bicornis)Cytogenet. Genome Res.103104110PubMedGoogle Scholar