Browsing Research Articles (Mammal Research Institute) by Title

Browsing Research Articles (Mammal Research Institute) by Title

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  • Woodborne, Stephan M.; Hall, Grant; Robertson, Iian; Patrut, Adrian; Rouault, Mathieu; Loader, Neil R.; Hofmeyr, Michele (Public Library of Science, 2015-05-13)
    A proxy rainfall record for northeastern South Africa based on carbon isotope analysis of four baobab (Adansonia digitata L.) trees shows centennial and decadal scale variability over the last 1,000 years. The record is ...
  • James, B.S.; Bester, Marthan Nieuwoudt; Penry, G.S.; Gennari, Enrico; Elwen, Simon Harvey (Taylor and Francis, 2015-10)
    Indian Ocean humpback dolphins Sousa plumbea inhabit nearshore waters from South Africa to eastern India. Humpback dolphins are vulnerable to conservation threats due to their naturally small population sizes and use of ...
  • Reisinger, Ryan Rudolf; De Bruyn, P.J. Nico; Bester, Marthan Nieuwoudt (Inter-Research, 2011-05-05)
    Killer whales Orcinus orca are apex predators known to have important effects on marine ecosystems. A fundamental step towards understanding their role in ecosystems, and vital for their informed management and conservation, ...
  • Delaney, David G.; Johnson, Ryan Lloyd; Bester, Marthan Nieuwoudt; Gennari, Enrico; Stow, Adam (Public Library of Science, 2012-04-13)
    Determining the residency of an aquatic species is important but challenging and it remains unclear what is the best sampling methodology. Photo-identification has been used extensively to estimate patterns of animals’ ...
  • Hofmeyer-Juritz, L.H.; Best, Peter B. (NISC (Pty) Ltd and Taylor & Francis, 2011)
    Estimating numbers of whales present in an area from recorded call rates could be a useful conservation tool. We recorded southern right whale Eubalaena australis vocalisations and presence in Walker Bay on the south ...
  • Townsend, Simon W.; Charlton, Benjamin D.; Manser, Marta B. (Elsevier, 2014-08)
    Formants, the resonance frequencies of the vocal tract, are the key acoustic parameters underlying vowel identity in human speech. However, recent work on nonhuman animal communication systems has shown that formant ...
  • Gridley, Tess; Nastasi, Aurora; Kriesell, Hannah Joy; Elwen, Simon Harvey (Taylor and Francis, 2015-05)
    Describing the repertoire of sounds produced by wild cetaceans is necessary for understanding their function, for acoustic population monitoring and for measuring the potential influence of anthropogenic impact. Geographic ...
  • Clutton-Brock, Tim H.; Hodge, Sarah J.; Flower, Tom P. (Thomas Patrick); Spong, Goran F.; Young, Andrew J. (University of Chicago Press, 2010-11)
    Attempts to account for observed variation in the degree of reproductive skew among cooperative breeders have usually assumed that subordinate breeding has fitness costs to dominant females. They argue that dominant ...
  • Patrut, Adrian; Woodborne, Stephan M.; Von Reden, Karl F.; Hall, Grant; Hofmeyr, Michele; Lowy, Daniel A.; Patrut, Roxana T. (Public Library of Science, 2015-01)
    The article reports the radiocarbon investigation results of the Lebombo Eco Trail tree, a representative African baobab from Mozambique. Several wood samples collected from the large inner cavity and from the outer part ...
  • Dalerum, Fredrik; Belton, Lydia (Oxford University Press, 2015-01)
    Large carnivores are important ecosystem components but frequently suffer local extinctions. However, reintroductions and shifting conservation attitudes have lead to some population repatriations. Since the ecological ...
  • Wolf, T.E. (Tanja); Schaebs, F.S.; Bennett, Nigel C., 1961-; Burroughs, R.E.J. (Richard); Ganswindt, Andre (Elsevier, 2018-01)
    In many mammal species, androgen levels in males are elevated during periods of mating activity, often to facilitate aggressive behavior between males over access to fertile females. However, this pattern might be less ...
  • Postma, Martin; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico (Springer, 2013-05)
    Life history theory predicts a change in reproduction success with age as energy resources are limited and must be allocated effectively to maximise reproduction and survival. In this study we use three reproductive ...
  • Cook, Timothee R.; Jewell, Oliver Joseph David; Chivell, Wilfred; Bester, Marthan Nieuwoudt (Seabird Group, 2012-03-11)
    Albinism has been recorded in many vertebrate taxa (Halls 2004). It is a genetic anomaly in which an autosomal recessive gene causes an absence of the enzyme tyrosinase, resulting in a total lack of melanin pigment in ...
  • Biermann, L.; Guinet, C.; Bester, Marthan Nieuwoudt; Brierley, A.; Boehme, Lars; Hoppema, M. (European Geosciences Union, 2015-01-13)
    Under high light intensity, phytoplankton protect their photosystems from bleaching through nonphotochemical quenching processes. The consequence of this is suppression of fluorescence emission, which must be corrected ...
  • Seeber, Peter Andreas; Duncan, Patrick; Fritz, Hervé; Ganswindt, Andre (Royal Society, 2013)
    The social organization of giraffes (Giraffa camelopardalis) imposes a high-cost reproductive strategy on bulls, which adopt a ‘roving male’ tactic. Our observations on wild giraffes confirm that bulls indeed have ...
  • McIntyre, Trevor (American Association for the Advancement of Science, 2015-08)
    The 12 June Reviews by R. Kays et al. (“Terrestrial animal tracking as an eye on life and planet,” p. 1222) and N. E. Hussey et al. (“Aquatic animal telemetry: A panoramic window into the underwater world,” p. 1221) ...
  • Reisinger, Ryan Rudolf; De Bruyn, P.J. Nico; Pistorius, Pierre Anton; Bester, Marthan Nieuwoudt (Springer, 2010-04)
    We report two observations of adult male Antarctic fur seals, Arctocephalus gazella, preying on large octopods at subAntarctic Marion Island during July and August 2008. If Antarctic fur seals take cephalopods ...
  • Wils, Tommy H.G.; Robertson, Iain; Woodborne, Stephan M.; Hall, Grant; Koprowski, Marcin; Eshetu, Zewdu (Wiley, 2016-05)
    Rising atmospheric CO2 concentrations affect climate directly through radiative effects and indirectly by changing plant water-use efficiency. Under global warming scenarios these widely reported changes will have ...
  • Davimes, Joshua G.; Alagaili, Abdulaziz N.; Gravett, Nadine; Bertelsen, Mads F.; Mohammed, Osama B.; Ismail, Khairy; Bennett, Nigel C., 1961-; Manger, Paul R. (Sage, 2016-08)
    The Arabian oryx inhabits an environment where summer ambient temperatures can exceed 40 °C for extended periods of time. While the oryx uses a suite of adaptations that aid survival, the effects of this extreme environment ...
  • Flach, Leonardo; Flach, Patricia A.; Chiarello, Adriano G. (Blackwell, 2008)
    Boat-based surveys were conducted from August 2002 to July 2003 to study the activity patterns, spatial pattern of area use, and group characteristics of Sotalia guianensis in Sepetiba Bay, southeast Brazil. Predetermined ...