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Ostrich
Journal of African Ornithology
Volume 55, 1984 - Issue 2
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Original Articles

THE DIET AND IMPLICATIONS OF DIETARY CHANGE OF CAPE GANNETS ON BIRD ISLAND, ALGOA BAY

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Pages 45-63 | Received 01 Sep 1983, Published online: 13 Oct 2010

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Read on this site (9)

G Passuni, LRD Human, SN Riddick, P Pattrick, M Bizani, SHP Deyzel, NA Strydom, TG Bornman & L Pichegru. (2021) Is the largest African penguin colony in South Africa influencing local ocean productivity?. African Journal of Marine Science 43:4, pages 455-469.
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R. A. Navarro, H. A. J. Meijer, L. G. Underhill & R. H. E. Mullers. (2018) Extreme water efficiency of Cape gannet Morus capensis chicks as an adaptation to water scarcity and heat stress in the breeding colony. Marine and Freshwater Behaviour and Physiology 51:1, pages 30-43.
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P.B. Best, R. J. M. Crawford & R.P. Van Der Elst. (1997) TOP PREDATORS IN SOUTHERN AFRICA'S MARINE ECOSYSTEMS. Transactions of the Royal Society of South Africa 52:1, pages 177-225.
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C.B. Walter, J. Cooper & W. Suter. (1987) DIET OF SWIFT TERN CHICKS IN THE SALDANHA BAY REGION, SOUTH AFRICA. Ostrich 58:2, pages 49-53.
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Articles from other publishers (45)

Zanri Strydom, David Grémillet, Hervé Fritz, Jan A. Venter, Julien Collet, Akiko Kato & Lorien Pichegru. (2023) Age and sex-specific foraging movements and energetics in an endangered monomorphic seabird. Marine Biology 170:11.
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Jazel Ouled-Cheikh, Francisco Ramírez, Moisès Sánchez-Fortún, Augusto Cortejana, Carola Sanpera & Josep Lluís Carrasco. (2022) Fishing activities shape the flight behaviour of an opportunistic predator species. Estuarine, Coastal and Shelf Science 278, pages 108089.
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Katrin Quiring, G. Carroll, C. Champion, E. W. Heymann & R. Harcourt. (2021) The diet of greater crested terns off southeast Australia varies with breeding stage and sea surface temperature. Marine Biology 168:9.
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Claire Saraux, William J. Sydeman, John F. Piatt, Tycho Anker‐Nilssen, Jonas Hentati‐Sundberg, Sophie Bertrand, Philippe M. Cury, Robert W. Furness, James A. Mills, Henrik Österblom, Giannina Passuni, Jean‐Paul Roux, Lynne J. Shannon & Robert J. M. Crawford. (2020) Seabird‐induced natural mortality of forage fish varies with fish abundance: Evidence from five ecosystems. Fish and Fisheries 22:2, pages 262-279.
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Robert J M Crawford, William J Sydeman, Sarah Ann Thompson, Richard B Sherley & Azwianewi B Makhado. (2019) Food habits of an endangered seabird indicate recent poor forage fish availability off western South Africa. ICES Journal of Marine Science.
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David Grémillet, Julien Collet, Henri Weimerskirch, Nicolas Courbin, Peter G. Ryan & Lorien Pichegru. (2019) Radar detectors carried by Cape gannets reveal surprisingly few fishing vessel encounters. PLOS ONE 14:2, pages e0210328.
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Davide Gaglio, Richard B. Sherley, Peter G. Ryan & Timothée R. Cook. (2018) A non-invasive approach to estimate the energetic requirements of an increasing seabird population in a perturbed marine ecosystem. Scientific Reports 8:1.
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David Costalago, Paige Potter, Paula Pattrick & Nadine A. Strydom. (2017) Influence of environmental variables on the larval stages of anchovy, Engraulis encrasicolus, and sardine, Sardinops sagax, in Algoa Bay, South Africa. Environmental Biology of Fishes 101:2, pages 225-236.
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Davide Gaglio, Timothée R. Cook, Alistair McInnes, Richard B. Sherley & Peter G. Ryan. (2018) Foraging plasticity in seabirds: A non-invasive study of the diet of greater crested terns breeding in the Benguela region. PLOS ONE 13:1, pages e0190444.
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Enric Real, Daniel Oro, Alejandro Martínez-Abraín, José Manuel Igual, Albert Bertolero, Marc Bosch & Giacomo Tavecchia. (2017) Predictable anthropogenic food subsidies, density-dependence and socio-economic factors influence breeding investment in a generalist seabird. Journal of Avian Biology 48:11, pages 1462-1470.
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Stephanie Plön, G. J. Greg Hofmeyr, Victor G. Cockcroft, Peter Shaughnessy, Catherine M. Kemper & Pamela L. Beesley. (2017) Graham James Berry Ross 1945-2017. Marine Mammal Science 33:4, pages 1255-1263.
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Maëlle Connan, Bo T. Bonnevie, Christina Hagen, Carl D. van der Lingen & Christopher McQuaid. (2017) Diet specialization in a colonial seabird studied using three complementary dietary techniques: effects of intrinsic and extrinsic factors. Marine Biology 164:8.
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Shannon M. McCluskey, Lars Bejder & Neil R. Loneragan. (2016) Dolphin Prey Availability and Calorific Value in an Estuarine and Coastal Environment. Frontiers in Marine Science 3.
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David Grémillet, Clara Péron, Akiko Kato, Françoise Amélineau, Yan Ropert-Coudert, Peter G. Ryan & Lorien Pichegru. (2016) Starving seabirds: unprofitable foraging and its fitness consequences in Cape gannets competing with fisheries in the Benguela upwelling ecosystem. Marine Biology 163:2.
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Andréa Thiebault, Magali Semeria, Christophe Lett & Yann Tremblay. (2016) How to capture fish in a school? Effect of successive predator attacks on seabird feeding success. Journal of Animal Ecology 85:1, pages 157-167.
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Jochen Kämpf & Piers ChapmanJochen Kämpf & Piers Chapman. 2016. Upwelling Systems of the World. Upwelling Systems of the World 251 314 .
René A. Navarro, Ralf H. E. Mullers, Haro A. J. Meijer & Les G. Underhill. (2015) Energy Expenditure of Free-Ranging Chicks of the Cape Gannet Morus capensis . Physiological and Biochemical Zoology 88:4, pages 406-415.
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David B. Green, Norbert T. W. Klages, Robert J. M. Crawford, Janet C. Coetzee, Bruce M. Dyer, Gavin M. Rishworth & Pierre A. Pistorius. (2015) Dietary change in Cape gannets reflects distributional and demographic shifts in two South African commercial fish stocks. ICES Journal of Marine Science 72:3, pages 771-781.
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Yuna KUME, Yasuaki NIIZUMA, Kentaro KAZAMA, Motohiro ITO, Rei YAMASHITA & Yutaka WATANUKI. (2015) Assimilation efficiency and growth of Rhinoceros Auklet chicks fed with Japanese Sand Lance and krill. Japanese Journal of Ornithology 64:2, pages 219-226.
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Gavin M. Rishworth, Yann Tremblay, David B. Green, Maëlle Connan & Pierre A. Pistorius. (2014) Drivers of Time-Activity Budget Variability during Breeding in a Pelagic Seabird. PLoS ONE 9:12, pages e116544.
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Andréa Thiebault, Ralf Mullers, Pierre Pistorius, María Andrea Meza-Torres, Laurent Dubroca, David Green & Yann Tremblay. (2014) From colony to first patch: Processes of prey searching and social information in Cape Gannets. The Auk 131:4, pages 595-609.
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Gavin M. Rishworth, Yann Tremblay, David B. Green & Pierre A. Pistorius. (2014) An automated approach towards measuring time-activity budgets in colonial seabirds. Methods in Ecology and Evolution 5:9, pages 854-863.
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LA Cohen, L Pichegru, D Grémillet, J Coetzee, L Upfold & PG Ryan. (2014) Changes in prey availability impact the foraging behaviour and fitness of Cape gannets over a decade. Marine Ecology Progress Series 505, pages 281-293.
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Andréa Thiebault, Ralf H.E. Mullers, Pierre A. Pistorius & Yann Tremblay. (2014) Local enhancement in a seabird: reaction distances and foraging consequence of predator aggregations. Behavioral Ecology 25:6, pages 1302-1310.
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Viviane Barquete, Venessa Strauss & Peter G. Ryan. (2013) Stable isotope turnover in blood and claws: A case study in captive African Penguins. Journal of Experimental Marine Biology and Ecology 448, pages 121-127.
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R Paredes, AMA Harding, DB Irons, DD Roby, RM Suryan, RA Orben, H Renner, R Young & A Kitaysky. (2012) Proximity to multiple foraging habitats enhances seabirds’ resilience to local food shortages. Marine Ecology Progress Series 471, pages 253-269.
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Lorien Pichegru, Peter G. Ryan, Robert J. M. Crawford, Carl D. van der Lingen & David Grémillet. (2009) Behavioural inertia places a top marine predator at risk from environmental change in the Benguela upwelling system. Marine Biology 157:3, pages 537-544.
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Ralf H. E. Mullers, René A. Navarro, Robert J. M. Crawford & Les G. Underhill. (2009) The importance of lipid-rich fish prey for Cape gannet chick growth: are fishery discards an alternative?. ICES Journal of Marine Science 66:10, pages 2244-2252.
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Nicola C. Okes, Philip A.R. Hockey, Lorien Pichegru, Carl D. van der Lingen, Robert J.M. Crawford & David Grémillet. (2009) Competition for shifting resources in the southern Benguela upwelling: Seabirds versus purse-seine fisheries. Biological Conservation 142:10, pages 2361-2368.
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Azwianewi B. Makhado, Mike A. Meÿer, Robert J. M. Crawford, Les G. Underhill & Chris Wilke. (2009) The efficacy of culling seals seen preying on seabirds as a means of reducing seabird mortality. African Journal of Ecology 47:3, pages 335-340.
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Sébastien Jaquemet & Christopher McQuaid. (2008) Stable isotope ratios in Cape gannets around the southern coasts of Africa reveal penetration of biogeographic patterns in oceanic signatures. Estuarine, Coastal and Shelf Science 80:3, pages 374-380.
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David Grémillet, Lorien Pichegru, Grégoire Kuntz, Anthony G Woakes, Sarah Wilkinson, Robert J.M Crawford & Peter G Ryan. (2008) A junk-food hypothesis for gannets feeding on fishery waste. Proceedings of the Royal Society B: Biological Sciences 275:1639, pages 1149-1156.
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Sue Lewis, David Grémillet, Francis Daunt, Peter G. Ryan, Robert J.M. Crawford & Sarah Wanless. (2005) Using behavioural and state variables to identify proximate causes of population change in a seabird. Oecologia 147:4, pages 606-614.
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