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• W2018095878 abstract "ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials ESR 9:125-131 (2010) - DOI: https://doi.org/10.3354/esr00243 Breeding seabirds at Dassen Island, South Africa: chances of surviving great white pelican predation Martin M. Mwema1,2,*, Marta de Ponte Machado1,2, Peter G. Ryan1 1Percy Fitzpatrick Institute, DST/NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa 2Animal Demography Unit, Department of Zoology, University of Cape Town, Rondebosch 7701, South Africa Present address: Box 1019, 00100, GPO, Nairobi, Kenya *Email: mmwema@gmail.com ABSTRACT: Seabird predation by great white pelicans Pelecanus onocrotalus is an unusual phenomenon that has become increasingly frequent in the Western Cape, South Africa. We report the scale of pelican predation and its impact on the breeding success of 5 seabird species monitored at Dassen Island in 2006. Pelican predation was observed on chicks of kelp gulls Larus dominicanus, crowned cormorants Phalacrocorax coronatus and Cape cormorants Phalacrocorax capensis. No predation on eggs was seen. Breeding success for 4 of the 5 species studied was low, with the white-breasted cormorants Phalacrocorax lucidus having the highest breeding success (0.56 fledglings per nest). Cape and bank cormorants Phalacrocorax neglectus did not fledge any chicks, while crowned cormorants had a breeding success of 0.08 fledglings per nest. Kelp gulls had a hatching success of 46%, but only a few chicks fledged, giving a breeding success of 0.06 fledglings per nest. Pelican predation poses a threat to at least 3 of the 5 seabirds studied, all of which are endemic to southern Africa. Three species are globally Endangered or Near Threatened, and pelican predation places additional pressure on these species. Management actions are needed to reduce or eliminate pelican predation. KEY WORDS: Predation · Pelecanus onocrotalus · Breeding success · Larus dominicanus · Phalacrocorax spp. Full text in pdf format Supplementary material PreviousNextCite this article as: Mwema MM, de Ponte Machado M, Ryan PG (2010) Breeding seabirds at Dassen Island, South Africa: chances of surviving great white pelican predation. Endang Species Res 9:125-131. https://doi.org/10.3354/esr00243Export citation Mail this link - Contents Mailing Lists - RSS Facebook - Tweet - linkedIn Cited by Published in ESR Vol. 9, No. 2. Online publication date: January 11, 2010 Print ISSN: 1863-5407; Online ISSN: 1613-4796 Copyright © 2010 Inter-Research." @default.
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• W2018095878 title "Breeding seabirds at Dassen Island, South Africa: chances of surviving great white pelican predation" @default.
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