First record of a vagrant Commerson＊s dolphin, Cephalorhynchus commersonii, at the southern African continental shelf

作者：P J N de Bruyn; G J G Hofmeyr; M S de Villiers

来源：African Zoology, 2011.

• Cephalorhynchus commersonii
• vagrant distribution
• South Africa.

Commerson＊s DolphinsCephalorhynchus commersonii are distributed in two disjunct populations, one around southern South America and the other around the sub-Antarctic Kerguelen Islands. These populations have been shown to be morphologically and genetically distinct and movement between the two populations is unlikely. We report on the sighting of a single specimen over the South African continental shelf on 13 November 2004. To our knowledge this is the first record of this species in South African waters and such a vast distance (over 4000 km) from the known distribution limits.