Abstract
The three South African crane species — the Blue Crane (Anthropoides paradisea), the Wattled Crane (Bugeranus carunculatus) and the Grey Crowned Crane (Balearica regulorum regulorum) — are listed as threatened by the IUCN. This study investigated the suitability of Randomly Amplified Polymorphic DNA markers in paternity testing in these species. RAPD primers were tested for polymorphism and RAPD profiles were scored and screened for sex linkage. The average Band Sharing Coefficient (BSC) of unrelated individuals was 0.665 (±0.103) for Blue Cranes, 0.745 (±0.060) for Grey Crowned Cranes and 0.736 (±0.056) for Wattled Cranes. Comparisons of these BSC values for unrelated individuals with BSC values of parent:offspring combination within the Blue Crane and the Grey Crowned Crane gave inconsistent results, with some parent:offspring BSC values being lower than the BSC of unrelated individuals. The results indicate that RAPDs are inappropriate for use in paternity testing in South African cranes. In the future, microsatellites should be investigated as an alternative paternity-testing technique to RAPD analysis.
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