African Zoology volume 45, issue 1, P78-91 2010 DOI: 10.3377/004.045.0103 View full text
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S.H. Elwen, M. Thornton, D. Reeb, P.B. Best

Abstract: Photo-identification surveys over three years along 390 km of coastline north of Cape Town, revealed that Heaviside's dolphin distribution was consistent between years and higher in areas more exposed to swells and with greater long-term availability of small hake Merluccius capensis (their principal prey). Dusky dolphin sighting rates varied considerably between years, but were generally higher in areas with lower hake availability and sandier shores (mostly straighter coastline). Large groups of 50-200 dusk…

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