Browsing Research Articles (Mammal Research Institute) by UP Author "De Bruyn, P.J. Nico"

Browsing Research Articles (Mammal Research Institute) by UP Author "De Bruyn, P.J. Nico"

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  • Home range and habitat use of roan antelope Hippotragus equinus in Northern Botswana 
    Havemann, Carl Peter; Retief, Tarryn Anne; Collins, Kai; Fynn, R.W.S.; Tosh, Cheryl A.; De Bruyn, P.J. Nico (Elsevier, 2022-01)
    Studies investigating animal movement and habitat use are essential for wildlife management and conservation. Northern Botswana represents some of the least modified landscapes in Africa. Studying the seasonal habitat use ...
  • How unique is unique? Quantifying geometric differences in stripe patterns of Cape mountain zebra, Equus zebra zebra (Perissodactyla: Equidae) 
    Prinsloo, Nicolas Derek; Postma, Martin; De Bruyn, P.J. Nico (Oxford University Press, 2021-02)
    Please read abstract in the article.
  • Identification of the anteroposterior and mediolateral position of lion paws and tracks using 3D geometric morphometrics 
    Marchal, Antoine F.J.; Lejeune, Philippe; De Bruyn, P.J. Nico (Southern African Wildlife Management Association, 2017-10)
    Estimating the distribution and status of animal populations is crucial in various fields of biology. Monitoring species via their tracks is controversial due to unreliable recording techniques, manipulator bias and ...
  • The importance of seasonal sea surface height anomalies for foraging juvenile southern elephant seals 
    Tosh, Cheryl A.; De Bruyn, P.J. Nico; Steyn, Jumari; Bornemann, Horst; Van der Hoff, John; Stewart, Brent S.; Plotz, Joachim; Bester, Marthan Nieuwoudt (Springer, 2015-10)
    A novel classification system was applied to the sea level anomaly (SLA) environment around Marion Island. We classified the SLA seascape into habitat types and calculated percentage of habitat use of ten juvenile ...
  • Individual heterogeneity in life-history trade-offs with age at first reproduction in capital breeding elephant seals 
    Oosthuizen, Wessel Christiaan; Postma, Martin; Altwegg, Res; Nevoux, Marie; Pradel, Roger; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico (Wiley, 2019-10)
    Recruitment age plays a key role in life‐history evolution. Because individuals allocate limited resources among competing life‐history functions, theory predicts trade‐offs between current reproduction and future growth, ...
  • Inshore occurrence of southern right whales (Eubalaena australis) at Subantarctic Marion Island 
    Postma, Martin; Wege, Mia; Bester, Marthan Nieuwoudt; Van der Merwe, Derek S.; De Bruyn, P.J. Nico (Zoological Society of Southern Africa, 2011-04)
    Opportunistic shore-based sightings of southern right whales Eubalaena australis for Marion Island (46°54'S, 37°45'E) were documented at five different times between 1974 and 2009. Whales were sighted between May and ...
  • Killer whale acoustic patterns respond to prey abundance and environmental variability around the Prince Edward Islands, Southern Ocean 
    Shabangu, Fannie Welcome; Daniels, Robyn; Jordaan, Rowan Keith; De Bruyn, P.J. Nico; Van den Berg, Marcel A.; Lamont, Tarron (Royal Society, 2024-01)
    Killer whales are apex predators with temporally and spatially varying distributions throughout the world's oceans. Their ecology and behaviour are poorly understood in most regions due to limited research, often because ...
  • Killer whale ecotypes : is there a global model? 
    De Bruyn, P.J. Nico; Tosh, Cheryl A.; Terauds, Aleks (John Wiley & Sons, Inc., 2013-02)
    Killer whales, Orcinus orca, are top predators occupying key ecological roles in a variety of ecosystems and are one of the most widely distributed mammals on the planet. In consequence, there has been significant interest ...
  • Killer whale nuclear genome and mtDNA reveal widespread population bottleneck during the last glacial maximum 
    Moura, Andre E.; Janse van Rensburg, Charlene; Pilot, Malgorzata; Tehrani, Arman; Best, Peter B.; Thornton, Meredith; Plön, Stephanie; De Bruyn, P.J. Nico; Worley, Kim C.; Gibbs, Richard A.; Dahlheim, Marilyn E.; Hoelzel, A. Rus (Oxford University Press, 2014-05)
    Ecosystem function and resilience is determined by the interactions and independent contributions of individual species. Apex predators play a disproportionately determinant role through their influence and dependence on ...
  • Making use of multiple surveys : estimating breeding probability using a multievent‐robust design capture–recapture model 
    Oosthuizen, Wessel Christiaan; Pradel, Roger; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico (Wiley Open Access, 2019-01)
    Increased environmental stochasticity due to climate change will intensify temporal variance in the life‐history traits, and especially breeding probabilities, of long‐lived iteroparous species. These changes may decrease ...
  • Managing for change : using vertebrate at sea habitat use to direct management efforts 
    Arthur, Benjamin; Hindell, Mark; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico; Goebel, Michael E.; Trathan, Phil; Lea, Mary-Anne (Elsevier, 2018-08)
    To understand and predict current and future distributions of animals under a changing climate it is essential to establish historical ranges as baselines against which distribution shifts can be assessed. Management ...
  • Marine Mammal Programme at the Prince Edward Islands : 38 years of research 
    Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico; Oosthuizen, Wessel Christiaan; Tosh, Cheryl A.; McIntyre, Trevor; Reisinger, Ryan Rudolf; Postma, Martin; Van der Merwe, Derek S.; Wege, Mia (Taylor & Francis, 2011)
    The Marine Mammal Programme (MMP) conducts research on pinnipeds and killer whales Orcinus orca at Marion Island, Prince Edward Islands, under the auspices of the Mammal Research Institute, Department of Zoology and ...
  • Marine mammals exploring the oceans pole to pole 
    Treasure, Anne; Roquet, Fabien; Ansorge, Isabelle J.; Bester, Marthan Nieuwoudt; Boehme, Lars; Bornemann, Horst; Charrassin, Jean-Benoit; Chevallier, Damien; Costa, Daniel P.; Fedak, Mike A.; Guinet, Christophe; Hammill, Mike O.; Harcourt, Robert G.; Hindell, Mark A.; Kovacs, Kit M.; Lea, Mary-Anne; Lovell, Phil; Lowther, Andrew D.; Lydersen, Christian; McIntyre, Trevor; McMahon, Clive Reginald; Muelbert, Monica M.C.; Nicholls, Keith; Picard, Baptiste; Reverdin, Gilles; Trites, Andrew W.; Williams, Guy D.; De Bruyn, P.J. Nico (Oceanography Society, 2017)
    Polar oceans are poorly monitored despite the important role they play in regulating Earth’s climate system. Marine mammals equipped with biologging devices are now being used to fill the data gaps in these logistically ...
  • Median pupping date, pup mortality and sex ratio of fur seals at Marion Island 
    Hofmeyr, Gordon John Gregory; Bester, Marthan Nieuwoudt; Pistorius, Pierre Anton; Mulaudzi, Tambudzani W.; De Bruyn, P.J. Nico; Ramunasi, Justice A.; Tshithabane, Hendrik N.; McIntyre, Trevor; Radzilani, Phathu M. (Southern African Wildlife Management Association, 2007)
    Modelling fur seal populations requires the accurate assessment of demographic parameters such as age-specific mortality. Owing to the highly variable mortality rates that pups are subject to, mortality of this age class ...
  • Movement and diving of killer whales (Orcinus orca) at a Southern Ocean archipelago 
    Reisinger, Ryan Rudolf; Keith, Mark; Andrews, Russel D.; De Bruyn, P.J. Nico (Elsevier, 2015-12)
    Eleven satellite tagswere deployed on 9 killerwhales at the Prince Edwards Islands in the Southern Ocean. Statespace switchingmodelswere used to generate position estimates fromArgos location data,while two behavioural modes ...
  • Moving in the Anthropocene : global reductions in terrestrial mammalian movements 
    Tucker, Marlee A.; Böhning-Gaese, Katrin; Fagan, William F.; Fryxell, John M.; Van Moorter, Bram; Alberts, Susan C.; Ali, Abdullahi H.; Allen, Andrew M.; Attias, Nina; Avgar, Tal; Bartlam-Brooks, Hattie; Bayarbaatar, Buuveibaatar; Belant, Jerrold L.; Bertassoni, Alessandra; Beyer, Dean; Bidner, Laura; Van Beest, Floris M.; Blake, Stephen; Blaum, Niels; Bracis, Chloe; Brown, Danielle; De Bruyn, P.J. Nico; Cagnacci, Francesca; Calabrese, Justin M.; Camilo-Alves, Constança; Chamaillé-Jammes, Simon; Chiaradia, Andre; Davidson, Sarah C.; Dennis, Todd; DeStefano, Stephen; Diefenbach, Duane; Douglas-Hamilton, Iain; Fennessy, Julian; Fichtel, Claudia; Fiedler, Wolfgang; Fischer, Christina; Fischhoff, Ilya; Fleming, Christen H.; Ford, Adam; Fritz, Susanne; Gehr, Benedikt; Goheen, Jacob R.; Gurarie, Eliezer; Hebblewhite, Mark; Heurich, Marco; Hewison, A.J. Mark; Hof, Christian; Hurme, Edward; Isbell, Lynne A.; Janssen, René; Jeltsch, Florian; Kaczensky, Petra; Kane, Adam; Kappeler, Peter M.; Kauffman, Matthew; Kays, Roland; Kimuyu, Duncan; Koch, Flavia; Kranstauber, Bart; LaPoint, Scott; Leimgruber, Peter; Linnell, John D.C.; López-López, Pascual; Markham, A. Catherine; Mattisson, Jenny; Medici, Emilia Patricia; Mellone, Ugo; Merrill, Evelyn; De Miranda Mourão, Guilherme; Morato, Ronaldo G.; Morellet, Nicolas; Morrison, Thomas; Díaz-Muñoz, Samuel L.; Mysterud, Atle; Nandintsetseg, Dejid; Nathan, Ran; Niamir, Aidin; Odden, John; O'Hara, Robert B.; Oliveira-Santos, Luiz Gustavo R.; Olson, Kirk A.; Patterson, Bruce D.; De Paula, Rogerio Cunha; Pedrotti, Luca; Reineking, Björn; Rimmler, Martin; Rogers, Tracy L.; Rolandsen, Christer Moe; Rosenberry, Christopher S.; Rubenstein, Daniel I.; Safi, Kamran; Saïd, Sonia; Sapir, Nir; Sawyer, Hall; Schmidt, Niels Martin; Selva, Nuria; Sergiel, Agnieszka; Shiilegdamba, Enkhtuvshin; Silva, João Paulo; Singh, Navinder; Solberg, Erling J.; Spiegel, Orr; Strand, Olav; Sundaresan, Siva; Ullmann, Wiebke; Voigt, Ulrich; Wall, Jake; Wattles, David; Wikelski, Martin; Wilmers, Christopher C.; Wilson, John W.; Wittemyer, George; Ziȩba, Filip; Zwijacz-Kozica, Tomasz; Mueller, Thomas (American Association for the Advancement of Science, 2018-01)
    Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database ...
  • Multi-state mark-recapture models as a novel approach to estimate factors affecting attendance patterns of lactating subantarctic fur seals from Marion Island 
    Nevoux, Marie; De Bruyn, P.J. Nico; Wege, Mia (Cambridge University Press, 2015-06)
    Observer-based studies often underestimate key ecological parameters. Here a fresh approach was used to analyse six years (2006–11) of attendance cycles to estimate foraging trip lengths of a lactating flipper-tagged ...
  • Multiple occurrences of king penguin (Aptenodytes patagonicus) sexual harassment by Antarctic fur seals (Arctocephalus gazella) 
    Haddad, William A.; Reisinger, Ryan Rudolf; Scott, Tristan; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico (Springer, 2015-05)
    Sexual coercion is the use of force to achieve mating, while reproductive interference encompasses many forms of interspecific interactions during mating. We describe three new occurrences of the sexual coercion of king ...
  • The ontogeny of at-sea behaviour in male southern elephant seals (Mirounga leonina) at Marion Island 
    Lasch, Kiara G.; Tosh, Cheryl A.; Bester, Marthan N.; De Bruyn, P.J. Nico (2023-11-22, 2023-01)
    Megafauna, such as southern elephant seals (SESs) (Mirounga leonina, Linn.), forage in diverse, seemingly limitless habitats. In pelagic settings, their behaviour is more likely to be limited by physiological ability and ...
  • Overlap and temporal variation in the diets of sympatric Antarctic and Subantarctic fur seals (Arctocephalus spp.) at Marion Island, Prince Edward Islands 
    Reisinger, Ryan Rudolf; Landman, Marietjie; Mgibantaka, Nonkoliso; Smale, Malcolm J.; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico; Pistorius, Pierre Anton (Co-Action Publishing, 2018-04-20)
    Antarctic (Arctocephalus gazella) and Subantarctic (A. tropicalis) fur seals are important predators in the Southern Ocean. Marion Island (southern Indian Ocean) hosts the largest sympatric breeding populations of these ...