Browsing Research Articles (Mammal Research Institute) by Title

Browsing Research Articles (Mammal Research Institute) by Title

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  • Dancing to the message : African clawless otter scent marking behaviour 
    Jordaan, Rowan Keith; Somers, Michael J.; McIntyre, Trevor (Associazione Teriologica Italiana, 2017-09-04)
    Latrine use and behaviour at latrines have been studied in numerous otter species, but not African clawless otters, Aonyx capensis. We set up trail cameras at two latrines near Dullstroom, South Africa. On several ...
  • Dead or alive? Comparing costs and benefits of lethal and non-lethal human-wildlife conflict mitigation on livestock farms 
    McManus, Jeannine S.; Dickman, A.J.; Gaynor, David; Smuts, B.H.; Macdonald, David W. (Cambridge University Press, 2015-11)
    Livestock depredation has implications for conservation and agronomy; it can be costly for farmers and can prompt retaliatory killing of carnivores. Lethal control measures are readily available and are reportedly ...
  • Dead-reckoning animal movements in R : a reappraisal using Gundog.Tracks 
    Gunner, Richard M.; Holton, Mark D.; Scantlebury, Mike D.; Van Schalkwyk, Ockert Louis; English, Holly M.; Williams, Hannah J.; Hopkins, Phil; Quintana, Flavio; Gómez‑Laich, Agustina; Borger, Luca; Redcliffe, James; Yoda, Ken; Yamamoto, Takashi; Ferreira, Sam; Govender, Danny; Viljoen, Pauli; Bruns, Angela; Bell, Stephen H.; Marks, Nikki J.; Bennett, Nigel Charles; Tonini, Mariano H.; Duarte, Carlos M.; Van Rooyen, Martin C.; Bertelsen, Mads F.; Tambling, Craig J.; Wilson, Rory P. (BioMed Central, 2021-07)
    BACKGROUND: Fine-scale data on animal position are increasingly enabling us to understand the details of animal movement ecology and dead-reckoning, a technique integrating motion sensor-derived information on heading ...
  • Decadal decline in maternal body condition of a Southern Ocean capital breeder 
    Vermeulen, Els; Thavar, Terriann; Glarou, Maria; Ganswindt, Andre; Christiansen, Fredrik (Nature Research, 2023-02-24)
    The changing physical properties of the Southern Ocean are known to impact the recruitment and survival of Antarctic krill (Euphausia superba). For oceanic krill predators, the resulting reduced energy intake may lead to ...
  • Decadal shift in foraging strategy of a migratory southern ocean predator 
    Van den Berg, Gideon Leon; Vermeulen, Els; Valenzuela, Luciano O.; Berube, Martine; Ganswindt, Andre; Grocke, Darren R.; Hall, Grant; Hulva, Pavel; Neveceralova, Petra; Palsboll, Per J.; Carroll, Emma L. (Wiley, 2021-03)
    Rapid anthropogenic environmental change is expected to impact a host of ecological parameters in Southern Ocean ecosystems. Of critical concern are the consequences of these changes on the range of species that show ...
  • Decision rules for determining terrestrial movement and the consequences for filtering high-resolution global positioning system tracks : a case study using the African lion (Panthera leo) 
    Gunner, Richard M.; Wilson, Rory P.; Holton, Mark D.; Hopkins, Phil; Bell, Stephen H.; Marks, Nikki J.; Bennett, Nigel Charles; Ferreira, Sam M.; Govender, Danny; Viljoen, Pauli; Bruns, Angela; Van Schalkwyk, Ockert Louis; Bertelsen, Mads F.; Duarte, Carlos M.; Van Rooyen, Martin C.; Tambling, Craig; Goppert, Aoife; Diesel, Delmar; Scantlebury, D. Michael (Royal Society, 2022-01)
    The combined use of global positioning system (GPS) technology and motion sensors within the discipline of movement ecology has increased over recent years. This is particularly the case for instrumented wildlife, with ...
  • Decline and fall : the causes of group failure in cooperatively breeding meerkats 
    Duncan, Chris; Manser, Marta B.; Clutton-Brock, Tim H. (Wiley Open Access, 2021-11)
    In many social vertebrates, variation in group persistence exerts an important effect on individual fitness and population demography. However, few studies have been able to investigate the failure of groups or the causes ...
  • Decomposing the variance in southern elephant seal weaning mass : partitioning environmental signals and maternal effects 
    Oosthuizen, Wessel Christiaan; Bester, Marthan Nieuwoudt; Altwegg, Res; McIntyre, Trevor; De Bruyn, P.J. Nico (Ecological Society of America, 2015-08)
    Predator populations are likely to respond to bottom-up processes, but there remains limited understanding of how wide-ranging marine predators respond to environmentally driven temporal variation in food availability.Widespread ...
  • Deconstructing compassionate conservation 
    Hayward, Matt W.; Callen, Alex; Allen, Benjamin L.; Ballard, Guy; Broekhuis, Femke; Bugir, Cassandra K.; Clarke, Rohan H.; Clulow, John; Clulow, Simon; Daltry, Jennifer C.; Davies-Mostert, Harriet T.; Fleming, Peter J.S.; Griffin, Andrea S.; Howell, Lachlan G.; Kerley, Graham I.H.; Klop-Toker, Kaya L.; Legge, Sarah; Major, Tom; Meyer, Ninon; Montgomery, Robert A.; Moseby, Katherine; Parker, Daniel M.; Periquet, Stephanie; Read, John; Scanlon, Robert J.; Seeto, Rebecca G.Y.; Shuttleworth, Craig M.; Somers, Michael J.; Tamessar, Cottrell T.; Tuft, Katherine; Upton, Rose M.O.; Valenzuela-Molina, Marcia; Wayne, Adrian; Witt, Ryan R.; Wuster, Wolfgang (Wiley, 2019-08)
    Compassionate conservation focuses on 4 tenets: first, do no harm; individuals matter; inclusivity of individual animals; and peaceful coexistence between humans and animals. Recently, compassionate conservation has been ...
  • Deep divers in even deeper seas : habitat use of male southern elephant seals from Marion Island 
    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 ...
  • Defining the link between oxidative stress, behavioural reproductive suppression and heterothermy in the Natal mole-rat (Cryptomys hottentotus natalensis) 
    Jacobs, Paul Juan; Finn, Kyle T.; Janse van Vuuren, Andries Koch; Suess, Tobias; Hart, Daniel William; Bennett, Nigel Charles (Elsevier, 2022-08)
    Sub-lethal effects, such as oxidative stress, can be linked to various breeding and thermophysiological strategies, which themselves can be linked to seasonal variability in abiotic factors. In this study, we investigated ...
  • Degradation of Temminck's pangolin (Smutsia temminckii) scales with a keratinase for extraction of reproductive steroid hormones 
    Blecher, Arantxa Silvia; Scheun, Juan; Ganswindt, Andre (Elsevier, 2021)
    Hormone monitoring in keratinous tissues has become increasingly popular. The insoluble keratin materials are generally pulverised before hormone extraction; however, this is difficult for thicker keratin structures like ...
  • The demise of the largest and oldest African baobabs 
    Patrut, Adrian; Woodborne, Stephan M.; Patrut, Roxana T.; Rakosy, Laszlo; Lowy, Daniel A.; Hall, Grant; Von Reden, Karl F. (Nature Publishing Group, 2018-07)
    The African baobab is the biggest and longest-living angiosperm tree. By using radiocarbon dating we identified the stable architectures that enable baobabs to reach large sizes and great ages. We report that 9 of the 13 ...
  • Demographic consequences of changes in environmental periodicity 
    Conquet, Eva; Ozgul, Arpat; Blumstein, Daniel T.; Armitage, Kenneth B.; Oli, Madan K.; Martin, Julien G.A.; Clutton-Brock, Tim H.; Paniw, Maria (Wiley, 2023-03)
    The fate of natural populations is mediated by complex interactions among vital rates, which can vary within and among years. Although the effects of random, among-year variation in vital rates have been studied extensively, ...
  • Demographic consequences of habitat loss and crowding in large carnivores : a natural experiment 
    Kotze, Robynne; Marshal, Jason P.; Winterbach, Christiaan W.; Winterbach, Hanlie Evelyn Kathleen; Keith, Mark (Wiley, 2021-03)
    Habitat loss is one of largest threats to the persistence of large carnivore populations. However, because most large carnivores are long-lived, cryptic and wide-ranging, few studies examine the demographic consequences ...
  • Density of leopards Panthera pardus on protected and non-protected land in the Waterberg Biosphere, South Africa 
    Swanepoel, Lourens Hendrik; Somers, Michael J.; Dalerum, Fredrik (Nordic Council for Wildlife Research, 2015)
    Data on the population size and trends of large carnivores remains the cornerstone of effective management and conservation programs. However, such data are rarely available for the majority of large carnivore species. ...
  • Density-dependent habitat selection varies between male and female African elephants 
    Fortin, Daniel; Berube, Audrey-Jade; Boudreau, Stephane; Shrader, A.M. (Adrian); Ward, David (Elsevier, 2022-12)
    Habitat selection models are the basis of an increasing number of conservation and management programs. Decision-makers rely on accurate models to assess animal distribution over space and time, and to recommend suitable ...
  • Density-related reproductive costs and natal conditions predict male life history in a highly polygynous mammal 
    Lloyd, Kyle J.; Oosthuizen, Wessel Christiaan; Rotella, Jay J.; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico (Elsevier, 2023-06)
    Polygynous males allocate substantial resources to sexual traits and behaviours to improve their chances of winning competitions for mates often at the cost of body maintenance. However, the degree to which males experience ...
  • Descriptive versus explanatory hypotheses in evolutionary research : a potentially concerning bias exemplified by research into the evolution of social organisations in carnivores 
    Dalerum, Fredrik (Taylor & Francis, 2012-01)
    In this note I want to point out a potentially concerning bias in evolutionary hypothesis testing. In evolutionary research, deductive hypothesis testing is the most common way of achieving information on causal relationships ...
  • Detection of Simonsiellaspp. in the vagina of lions and leopard in oestrus 
    Callealta, Isabel; Ganswindt, Andre; Goncalves, Sara; Mathew, Abraham; Lueders, Imke (Wiley, 2018-12)
    Reports of the vaginal flora of wild cats such as lions or leopards are scarce. The micro‐organisms most commonly found in the vagina of clinically healthy cats are aerobic bacteria such as coagulase‐negative Staphylococcus, ...