Browsing Research Articles (Mammal Research Institute) by UP Author "Tosh, Cheryl A."

Browsing Research Articles (Mammal Research Institute) by UP Author "Tosh, Cheryl A."

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  • Wege, Mia; Tosh, Cheryl A.; De Bruyn, P.J. Nico; Bester, Marthan Nieuwoudt (Inter-Research, 2016-07)
    Marine top-predators show fidelity to foraging areas with predictable high-quality food patches. Areas of predictable prey yield are of conservation importance and telemetry data aid in identifying such areas. This study ...
  • McIntyre, Trevor; Bornemann, Horst; Plotz, Joachim; Tosh, Cheryl A.; Bester, Marthan Nieuwoudt (Cambridge University Press, 2012)
    We describe the habitat use of 22 male southern elephant seals (Mirounga leonina) satellite tagged at Marion Island between 2004 and 2008. While a few areas of increased utilization appeared to be associated with areas ...
  • Wege, Mia; Postma, Martin; Tosh, Cheryl A.; De Bruyn, P.J. Nico; Bester, Marthan Nieuwoudt (Springer, 2015-04)
    A leucistic Antarctic fur seal (Arctocephalus gazella) pup was born on subantarctic Marion Island during the austral summer of 2010/2011. This is the first confirmed record of a leucistic fur seal pup born outside ...
  • Reisinger, Ryan R.; Raymond, Ben; Hindell, Mark A.; Bester, Marthan Nieuwoudt; Crawford, Robert J.M.; Davies, Delia; De Bruyn, P.J. Nico; Dilley, Ben J.; Kirkman, Stephen P.; Makhado, Azwianewi B.; Ryan, Peter G.; Schoombie, Stefan; Stevens, Kim; Sumner, Michael D.; Tosh, Cheryl A.; Wege, Mia; Whitehead, Thomas Otto; Wotherspoon, Simon; Pistorius, Pierre A. (Wiley, 2018-04)
    AIM : The distribution of marine predators is driven by the distribution and abundance of their prey; areas preferred by multiple marine predator species should therefore indicate areas of ecological significance. The ...
  • 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 ...
  • James, B.S. (Bridget); McIntyre, Trevor; Tosh, Cheryl A.; Bornemann, Horst; Plotz, Joachim; Bester, Marthan Nieuwoudt (Springer, 2012-11)
    Access to different environments may lead to inter-population behavioural changes within a species that allow populations to exploit their immediate environments. Elephant seals from Marion Island (MI) and King ...
  • 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 ...
  • Tosh, Cheryl A.; Steyn, Jumari; Bornemann, Horst; Van den Hoff, John; Stewart, Brent S.; Plotz, Joachim; Bester, Marthan Nieuwoudt (Inter-Research, 2012-10-23)
    Marine mammals forage in dynamic environments characterized by variables that are continuously changing in relation to large-scale oceanographic processes. In the present study, behavioural states of satellite-tagged ...
  • Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico; Oosthuizen, W.C. (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 ...
  • De Bruyn, P.J. Nico; Cameron, Elissa Z.; Tosh, Cheryl A.; Oosthuizen, W.C. (Wessel Christiaan); Reisinger, Ryan Rudolf; Mufanadzo, N. Thomas; Phalanndwa, Mashudu V.; Postma, Martin; Wege, Mia; Van der Merwe, Derek S.; Bester, Marthan Nieuwoudt (Elsevier, 2010-01)
    Non-offspring maternal care should be rare due to the high costs of raising offspring, particularly lactation, but nonetheless occurs in a variety of taxa. Misguided parental care, associated with recognition errors and/or ...
  • Reisinger, Ryan Rudolf; De Bruyn, P.J. Nico; Tosh, Cheryl A.; Oosthuizen, W.C. (Wessel Christiaan); Mufanadzo, N. Thomas; Bester, Marthan Nieuwoudt (Taylor & Francis, 2011)
    The diet of killer whales Orcinus orca was investigated from 48 predation events observed during 823 sightings at sub-Antarctic Marion Island between 2006 and 2009. From these events, there were 10 cases where prey could ...
  • De Bruyn, P.J. Nico; Tosh, Cheryl A.; Bester, Marthan Nieuwoudt; Cameron, Elissa Z.; McIntyre, Trevor; Wilkinson, I.S. (Ian Stewart) (Elsevier, 2011-09)
    Polygyny is a widespread and evolutionarily significant mating system in vertebrates. The southern elephant seal, Mirounga leonina, has often been cited as an example of an animal with an extremely polygynous mating ...
  • De Bruyn, P.J. Nico; Tosh, Cheryl A.; Oosthuizen, W.C. (Wessel Christiaan); Phalanndwa, Mashudu V.; Bester, Marthan Nieuwoudt (Southern African Wildlife Management Association, 2008-10)
    Like many pinniped species, southern elephant seals (Mirounga leonina) are conducive to long-term population studies using mark-recapture techniques. The twenty-four year longitudinal dataset at sub-Antarctic Marion Island ...