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Entanglement of pinnipeds at Marion Island
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: G. J. G. Hofmeyr M. N. BesterDuring the period April 1991–March 1996, 10 entangled Antarctic fur seals Arctocephalus gazella, 28 entangled Subantarctic fur seals A. tropicalis and one entangled southern elephant seal Mirounga leonina were observed at Marion Island, Southern Ocean. Entanglement of fur seals was... -
Diet of the Cape fur seal Arctocephalus pusillus pusillus at the Robberg Peninsula, Plettenberg Bay, and implications for local fisheries
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Huisamen --- School of Natural Resource Management, South Africa SP Kirkman --- Oceans and Coasts, Department of Environmental Affairs, South Africa CD van der Lingen --- Branch: Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa LH Watson --- School of Natural Resource Management, South Africa VG Cockcroft --- Department of Zoology, South Africa R Jewell --- Centre for Dolphin Studies, South Africa PA Pistorius --- Department of Zoology, South AfricaCape fur seals Arctocephalus pusillus pusillus were harvested to extirpation on the Robberg Peninsula, Plettenberg Bay, on the south-east coast of South Africa, between the 17th and early 20th centuries. Seals returned to Robberg in small numbers during the early... -
Trends in tagging of marine mammals: a review of marine mammal biologging studies
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T McIntyre --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaThe number of scientific papers resulting from biologging instruments deployed on marine mammals is increasing as improved technologies result in smaller devices and improved sensor-, storage- and transmission capabilities. I undertook a comprehensive review of papers resulting from biologging deployments... -
Intraguild predation and partial consumption of blue sharks Prionace glauca by Cape fur seals Arctocephalus pusillus pusillus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Fallows --- Apex Expeditions, South Africa HP Benoît --- Fisheries and Oceans Canada, Canada N Hammerschlag --- Rosenstiel School of Marine and Atmospheric Science, USAThe top-down effects of predators on ecosystem structure and dynamics have been studied increasingly. However, the nature and consequence of trophic interactions between upper-trophic-level predators have received considerably less attention. This is especially the case in marine systems due to... -
A snapshot assessment of the diet of Cape fur seals Arctocephalus pusillus pusillus at Ilha dos Tigres, Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Winkler --- Department of Ichthyology and Fisheries Science, South Africa S Mannheim --- Department of Ichthyology and Fisheries Science, South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa C Santos --- Biologia Faculdade de Ciências, Angola C de Beer --- Department of Ichthyology and Fisheries Science, South Africa MJ Smale --- Department of Zoology and Institute for Coastal and Marine Research, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe population of Cape fur seal Arctocephalus pusillus pusillus at Ilha dos Tigres off the coast of southern Angola is expanding. Until now the only available biological information on the population has been its demographic parameters, and this insufficiency has...