Browsing Research Articles (Mammal Research Institute) by Title

Browsing Research Articles (Mammal Research Institute) by Title

Sort by: Order: Results:

  • Thermal physiology of three sympatric small mammals from southern Africa 
    Hoole, Carol; Czenze, Zenon J.; Bennett, Nigel Charles; McKechnie, Andrew E. (Wiley, 2019-01)
    Please read abstract in the article.
  • Thermoregulation in free-ranging Nycteris thebaica (Nycteridae) during winter : no evidence of torpor 
    Toussaint, Dawn Cory; Brigham, R. Mark; McKechnie, Andrew E. (Elsevier, 2013-09)
    Bats are among the most heterothermic mammals, with nearly all species investigated under free-ranging conditions to date exhibiting some degree of daily torpor and/or hibernation. We investigated thermoregulation during ...
  • Threat analysis for more effective lion conservation 
    Bauer, Hans; Dickman, Amy; Chapron, Guillaume; Oriol-Cotterill, Alayne; Nicholson, Samantha K.; Sillero-Zubiri, Claudio; Hunter, Luke; Lindsey, Peter Andrew; MacDonald, David W. (Cambridge University Press, 2022-01)
    We use comparable 2005 and 2018 population data to assess threats driving the decline of lion Panthera leo populations, and review information on threats structured by problem tree and root cause analysis. We define 11 ...
  • Tiletamine/zolazepam immobilization of adult post-moult southern elephant seal males 
    Bornemann, Horst; De Bruyn, P.J. Nico; Reisinger, Ryan Rudolf; Kastner, Sabine; Marquez, Maria E.I.; McIntyre, Trevor; Bester, Marthan Nieuwoudt; Plotz, Joachim (Springer, 2013-11)
    Immobilization and anaesthesia of adult male southern elephant seals (Mirounga leonina) is potentially risky for animals and scientists. A tiletamine/zolazepam injection is considered the most appropriate drug ...
  • Time-varying habitat selection analysis : a model and applications for studying diel, seasonal, and post-release changes 
    Dejeante, Romain; Valeix, Marion; Chamaille-Jammes, Simon (Wiley, 2024-02)
    Resource selection functions are commonly used to evaluate animals' habitat selection, for example, the disproportionate use of habitats relative to their availability. While environmental conditions or animal motivations ...
  • Tissue oxidative ecology along an aridity gradient in a mammalian subterranean species 
    Jacobs, Paul Juan; Hart, Daniel William; Merchant, Hana N.; Janse van Vuuren, Andries Koch; Faulkes, Christopher G.; Portugal, Steven J.; Van Jaarsveld, Barry; Bennett, Nigel Charles (MDPI, 2022-11-18)
    Climate change has caused aridification which can alter habitat vegetation, soil and precipitation profiles potentially affecting resident species. Vegetation and soil profiles are important for subterranean mole-rats ...
  • To buzz or burst-pulse? The functional role of Heaviside's dolphin, Cephalorhynchus heavisidii, rapidly pulsed signals 
    Martin, Morgan Jennifer; Elwen, Simon Harvey; Kassanjee, Reshma; Gridley, Tess (Elsevier, 2019-04)
    Four groups of toothed whales have independently evolved to produce narrowband high-frequency (NBHF) echolocation signals (i.e. clicks) with a strikingly similar waveform and centroid frequency around 125 kHz. These signals ...
  • The topography of rods, cones and intrinsically photosensitive retinal ganglion cells in the retinas of a nocturnal (Micaelamys namaquensis) and a diurnal (Rhabdomys pumilio) rodent 
    Van der Merwe, Ingrid; Lukats, Akos; Blahova, Veronika; Oosthuizen, Maria Kathleen; Bennett, Nigel Charles; Nemec, Pavel (Public Library of Science, 2018-08-09)
    We used immunocytochemistry to determine the presence and topographical density distributions of rods, cones, and intrinsically photosensitive retinal ganglion cells (ipRGCs) in the four-striped field mouse (Rhabdomys ...
  • Top–down limits on prey populations may be more severe in larger prey species, despite having fewer predators 
    Le Roux, Elizabeth; Marneweck, David G.; Clinning, Geoff; Druce, Dave J.; Kerley, Graham I.H.; Cromsigt, Joris P.G.M. (Wiley, 2019-06)
    Variation in the vulnerability of herbivore prey to predation is linked to body size, yet whether this relationship is size‐nested or size‐partitioned remains debated. If size‐partitioned, predators would be focused on ...
  • Towed passive acoustic monitoring complements visual survey methods for Heaviside’s dolphins Cephalorhynchus heavisidii in the Namibian Islands Marine protected area 
    Gridley, T.; Martin, Morgan Jennifer; Slater, J.; Roux, J.-P.; Swift, R.J.; Elwen, Simon Harvey (NISC (Pty) Ltd and Informa UK Limited (trading as Taylor & Francis Group), 2020)
    The genus Cephalorhynchus contains four dolphin species, of which three are classified as Near Threatened or Endangered and one subspecies is close to extinction. Understanding the species’ abundance, distributions and ...
  • Tracking of marine predators to protect Southern ocean ecosystems 
    Hindell, Mark A.; Reisinger, Ryan Rudolf; Ropert-Coudert, Yan; Huckstadt, Luis A.; Trathan, Philip N.; Bornemann, Horst; Charrassin, Jean-Benoit; Chown, Steven L.; Costa, Daniel P.; Danis, Bruno; Lea, Mary-Anne; Thompson, David; Torres, Leigh G.; Van de Putte, Anton P.; Alderman, Rachael; Andrews-Goff, Virginia; Arthur, Ben; Ballard, Grant; Bengtson, John; Bester, Marthan Nieuwoudt; Blix, Arnoldus Schytte; Boehme, Lars; Bost, Charles-Andre; Boveng, Peter; Cleeland, Jaimie; Constantine, Rochelle; Corney, Stuart; Crawford, Robert J.M.; Dalla Rosa, Luciano; De Bruyn, P.J. Nico; Delord, Karine; Descamps, Sebastien; Double, Mike; Emmerson, Louise; Fedak, Mike; Friedlaender, Ari; Gales, Nick; Goebel, Michael E.; Goetz, Kimberly T.; Guinet, Christophe; Goldsworthy, Simon D.; Harcourt, Rob; Hinke, Jefferson T.; Jerosch, Kerstin; Kato, Akiko; Kerry, Knowles R.; Kirkwood, Roger; Kooyman, Gerald L.; Kovacs, Kit M.; Lawton, Kieran; Lowther, Andrew D.; Lydersen, Christian; Lyver, Phil O’B.; Makhado, Azwianewi B.; Márquez, Maria E.I.; McDonald, Birgitte I.; McMahon, Clive Reginald; Muelbert, Monica; Nachtsheim, Dominik; Nordøy, Erling S.; Olmastroni, Silvia; Phillips, Richard A.; Pistorius, Pierre Anton; Plotz, Joachim; Putz, Klemens; Ratcliffe, Norman; Ryan, Peter G.; Santos, Mercedes; Southwell, Colin; Staniland, Iain; Takahashi, Akinori; Tarroux, Arnaud; Trivelpiece, Wayne; Wakefield, Ewan; Weimerskirch, Henri; Wienecke, Barbara; Xavier, Jose C.; Wotherspoon, Simon; Jonsen, Ian D.; Raymond, Ben (Nature Research, 2020-04)
    Southern Ocean ecosystems are under pressure from resource exploitation and climate change. Mitigation requires the identifcation and protection of Areas of Ecological Signifcance (AESs), which have so far not been ...
  • Trade-offs between immunity and testosterone in male African ground squirrels 
    O'Brien, Kelsey A.; Waterman, Jane M.; Anderson, W. Gary; Bennett, Nigel Charles (Company of Biologists, 2018-08)
    The immunocompetence handicap hypothesis (ICHH) proposes that testosterone has both beneficial effects on male reproductive potential and negative effects by suppressing the immune system. However, support for the ICHH ...
  • Trade-offs of predation and foraging explain sexual segregation in African buffalo 
    Hay, C.T.; Cross, Paul C.; Funston, Paul J. (Blackwell, 2008)
    Many studies have investigated why males and females segregate spatially in sexually dimorphic species. These studies have focused primarily on temperate zone ungulates in areas lacking intact predator communities, and few ...
  • Trait-based vaccination of individual meerkats (Suricata suricatta) against tuberculosis provides evidence to support targeted disease control 
    Patterson, Stuart J.; Clutton-Brock, Tim H.; Pfeiffer, Dirk U.; Drewe, Julian A. (MDPI, 2022-01)
    Individuals vary in their potential to acquire and transmit infections, but this fact is currently underexploited in disease control strategies. We trialled a trait-based vaccination strategy to reduce tuberculosis in ...
  • Transcript and protein profiling identifies signaling, growth arrest, apoptosis, and NF-kappa B survival signatures following GNRH receptor activation 
    Meyer, Colette; Sims, Andrew H.; Morgan, Kevin; Harrison, Beth; Muir, Morwenna; Bai, Jianing; Faratian, Dana; Millar, Robert P.; Langdon, Simon P. (BioScientifica Ltd, 2013)
    GNRH significantly inhibits proliferation of a proportion of cancer cell lines by activating GNRH receptor (GNRHR)-G protein signaling. Therefore, manipulation of GNRHR signaling may have an under-utilized role in treating ...
  • Transit station or destination? Attendance patterns, movements, and abundance estimate of humpback whales off west South Africa from photographic and genotypic matching 
    Barendse, Jaco; Best, Peter B.; Thornton, Meredith; Elwen, Simon Harvey; Rosenbaum, Howard C.; Carvalho, Ines; Pomilla, Cristina; Collins, T.J.Q.; Meyer, M.; Leeney, Ruth H. (NISC, 2011-03)
    Humpback whales found off west South Africa (WSA) are known to display an atypical migration that may include temporary residency and feeding during spring and summer. At a regional scale there is uncertainty about ...
  • Translating marine animal tracking data into conservation policy and management 
    Hays, Graeme Clive; Bailey, Helen; Bograd, Steven J.; Bowen, William Don; Campagna, Claudio; Carmichael, Ruth H.; Casale, Paolo; Chiaradia, Andre; Costa, Daniel P.; Cuevas, Eduardo; De Bruyn, P.J. Nico; Dias, Maria P.; Duarte, Carlos M.; Dunn, Daniel C.; Dutton, Peter H.; Esteban, Nicole; Friedlaender, Ari; Goetz, Kimberley T.; Godley, Brendan J.; Halpin, Patrick N.; Hamann, Mark; Hammerschlag, Neil; Harcourt, Robert; Harrison, Autumn-Lynn; Hazen, Elliott L.; Heupel, Michelle Ra Nae; Hoyt, Erich; Humphries, Nicolas E.; Kot, Connie Y.; Lea, James S.E.; Marsh, Helene; Maxwell, Sara M.; McMahon, Clive Reginald; Di Sciara, Giuseppe Notarbartolo; Palacios, Daniel M.; Phillips, Richard A.; Righton, David; Schofield, Gail; Seminoff, Jeffrey A.; Simpfendorfer, Colin Ashley; Sims, David W.; Takahashi, Akinori; Tetley, Michael J.; Thums, Michele; Trathan, Philip N.; Villegas-Amtmann, Stella; Wells, Randall S.; Whiting, Scott D.; Wildermann, Natalie E.; Sequeira, Ana Micaela Martins (Elsevier, 2019-05)
    There have been efforts around the globe to track individuals of many marine species and assess their movements and distribution, with the putative goal of supporting their conservation and management. Determining whether, ...
  • Treatment of high risk Sertoli-Leydig cell tumors of the ovary using a gonadotropin releasing hormone (GnRH) analog 
    Lashkari, Harsha Prasada; Nash, Ruth; Albanese, Assunta; Okoye, Bruce; Millar, Robert P.; Pritchard-Jones, Kathy (Wiley-Blackwell, 2013)
    Sertoli–Leydig cell tumors are rare ovarian neoplasms. We report two unusual cases with bilateral SLCTs suggesting evidence of genetic predisposition and at high risk of recurrence. To reduce this risk, we exploited the ...
  • Trend changes in sympatric Subantarctic and Antarctic fur seal pup populations at Marion Island, Southern Ocean 
    Wege, Mia; Etienne, Marie-Pierre; Oosthuizen, Wessel Christiaan; Reisinger, Ryan Rudolf; Bester, Marthan Nieuwoudt; De Bruyn, P.J. Nico (Wiley, 2016-07)
    Recent pup population estimates of sympatric Subantarctic (Arctocephalus tropicalis) and Antarctic fur seals (A. gazella) at Marion Island are presented. Published pup population estimates of A. tropicalis (1995 and 2004) ...
  • Trends in tagging of marine mammals : a review of marine mammal biologging studies 
    McIntyre, Trevor (Taylor and Francis, 2014)
    The 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 ...