Browsing Research Articles (Mammal Research Institute) by Title

Browsing Research Articles (Mammal Research Institute) by Title

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  • 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 ...
  • KISS1R : hallmarks of an effective regulator of the neuroendocrine axis 
    Millar, Robert P.; Babwah, Andy V. (Karger, 2015-06)
    Kisspeptin (KP) is now well recognized as a potent stimulator of gonadotropin-releasing hormone (GnRH) secretion and thereby a major regulator of the neuroendocrine-reproductive axis. KP signals via KISS1R, a G protein-coupled ...
  • Kisspeptin regulation of genes involved in cell invasion and angiogenesis in first trimester human trophoblast cells 
    Francis, Victor A.; Abera, Aron B.; Matjila, Mushi; Millar, Robert P.; Katz, Arieh A.; Ulasov, Ilya (Public Library of Science, 2014-06-12)
    The precise regulation of extravillous trophoblast invasion of the uterine wall is a key process in successful pregnancies. Kisspeptin (KP) has been shown to inhibit cancer cell metastasis and placental trophoblast cell ...
  • Kisspeptin signaling is required for the Luteinizing hormone response in anestrous ewes following the introduction of males 
    De Bond, Julie-Ann P.; Li, Qun; Millar, Robert P.; Clarke, Iain J.; Smith, Jeremy T.; Vaudry, Hubert (Public Library of Science, 2013-02-28)
    The introduction of a novel male stimulates the hypothalamic-pituitary-gonadal axis of female sheep during seasonal anestrus, leading to the resumption of follicle maturation and ovulation. How this pheromone cue activates ...
  • Kisspeptin, neurokinin B, and dynorphin cct in the arcuate nucleus to control activity of the GnRH pulse generator in Ewes 
    Goodman, Robert L.; Hileman, Stanley M.; Nestor, Casey C.; Porter, Katrina L.; Connors, John M.; Hardy, Steve L.; Millar, Robert P.; Cernea, Maria; Coolen, Lique M.; Lehman, Michael N. (The Endocrine Society, 2013-11)
    Recent work has led to the hypothesis that kisspeptin/neurokinin B/dynorphin (KNDy) neurons in the arcuate nucleus play a key role in GnRH pulse generation, with kisspeptin driving GnRH release and neurokinin B (NKB) and ...
  • Kisspeptin-10 is a potent stimulator of LH and increases pulse frequency in men 
    George, J.T.; Veldhuis, J.D.; Roseweir, A.K.; Newton, Claire L.; Faccenda, E.; Millar, Robert P.; Anderson, Richard A. (The Endocrine Society, 2011-08)
    CONTEXT: Kisspeptins stimulate GnRH and thus gonadotropin secretion. Kisspeptin-10 is the minimal kisspeptin sequence with full intrinsic bioactivity, but it has not been studied in man. OBJECTIVE: We investigated our ...
  • Knowledge, reason and emotion : using behavioral theories to understand people's support for invasive animal management 
    Steele, Zachary T.; Pienaar, Elizabeth Frances (Springer, 2021-11)
    Species invasions contribute to global environmental change and cause declines in populations of threatened and endangered species. Significant government funds are expended on invasive species management (ISM) actions ...
  • Landscape heterogeneity and woody encroachment decrease mesocarnivore scavenging in a savanna agroecosystem 
    Lima, Kyle A.; Stevens, Nicola; Wisely, Samantha M.; Fletcher, Robert J., Jr.; Monadjem, Ara; Austin, James D.; Mahlaba, Themb'alilahlwa; McCleery, Robert A. (Elsevier, 2021-09)
    Increased agricultural intensification and extensive woody plant encroachment are having widespread effects on the functioning of grass-dominated systems at multiple spatial scales. Yet there is little understanding of how ...
  • Landscape heterogeneity shapes taxonomic diversity of non-breeding birds across fragmented savanna landscapes 
    Ke, Alison; Sibiya, Muzi D.; Reynolds, Chevonne; McCleery, Robert A.; Monadjem, Ara; Fletcher Jr, Robert J. (Springer, 2018-08)
    There is an ongoing need to integrate agricultural production with wildlife conservation to maintain biodiversity, especially in developing countries. The landscape heterogeneity hypothesis identifies a potential means for ...
  • Landscape level effects of lion presence (Panthera leo) on two contrasting prey species 
    Chizzola, Maddalena; Belton, L.E. (Lydia); Ganswindt, Andre; Greco, Ilaria; Hall, Grant; Swanepoel, Lourens; Dalerum, Fredrik (Frontiers Media, 2018-11-27)
    Due to the strong individual cost of being predated, potential prey species alter their behavior and physiology in response to predation risk. Such alterations may cause major indirect consequences on prey populations ...
  • The landscape‐scale drivers of herbivore assemblage distribution on the central basalt plains of Kruger National Park 
    Young, Cyanne; Fritz, Herve; Smithwick, Erica A.H.; Venter, Jan A. (Cambridge University Press, 2020-01)
    The distribution and abundance of herbivores in African savannas are constrained by interactions between abiotic and biotic factors. At the species-level, herbivores face trade-offs among foraging requirements, vegetation ...
  • Large carnivore dangerousness affects the reactive spatial response of prey 
    Say-Sallaz, Elise; Chamaille-Jammes, Simon; Periquet, Stephanie; Loveridge, Andrew J.; Macdonald, David W.; Antonio, Antony; Fritz, Herve; Valeix, Marion (Elsevier, 2023-08)
    Predators differ in various attributes: body size, sociality, speed, preferred prey size, hunting mode, etc. Together, these characteristics contribute to the predator's overall dangerousness, which is likely to underlie ...
  • Large predators can mitigate nutrient losses associated with off-site removal of animals from a wildlife reserve 
    Abraham, Andrew J.; Webster, A.B. (Andrea); Prys-Jones, Tomos O.; Le Roux, Elizabeth; Smith, Dylan; McFayden, Duncan; De Jager, Pieter Christiaan; Clauss, Marcus; Doughty, Christopher E. (Wiley, 2021-07)
    Please read abstract in the article.
  • Laterality in the Cape mole-rat, Georychus capensis 
    Jacobs, Paul Juan; Oosthuizen, Maria Kathleen (Elsevier, 2021-04)
    Behavioural lateralization, the differential use one side of the body, and/or the bilateral use of sensory organs or limbs, is common in many vertebrates. One way in which behavioural lateralization can be detected in ...
  • Laterality in the Damaraland mole-rat : insights from eusocial mammal 
    Jacobs, Paul Juan; Oosthuizen, Maria Kathleen (MDPI, 2023-02)
    Lateralization is the functional control of certain behaviors in the brain being processed by either the left or right hemisphere. Behavioral asymmetries can occur at an individual and population level, although population-level ...
  • Leaf nutrients, not specific leaf area, are consistent indicators of elevated nutrient inputs 
    Firn, Jennifer; McGree, James M.; Harvey, Eric; Flores-Moreno, Habacuc; Schütz, Martin; Buckley, Yvonne M.; Borer, Elizabeth T.; Seabloom, Eric W.; La Pierre, Kimberly J.; MacDougall, Andrew M.; Prober, Suzanne M.; Stevens, Carly J.; Sullivan, Lauren L.; Porter, Erica; Ladouceur, Emma; Allen, Charlotte; Moromizato, Karine H.; Morgan, John W.; Harpole, W. Stanley; Hautier, Yann; Eisenhauer, Nico; Wright, Justin P.; Adler, Peter B.; Arnillas, Carlos Alberto; Bakker, Jonathan D.; Biederman, Lori; Broadbent, Arthur A.D.; Brown, Cynthia S.; Bugalho, Miguel N.; Caldeira, Maria C.; Cleland, Elsa E.; Ebeling, Anne; Fay, Philip A.; Hagenah, Nicole; Kleinhesselink, Andrew R.; Mitchell, Rachel; Moore, Joslin L.; Nogueira, Carla; Peri, Pablo Luis; Roscher, Christiane; Smith, Melinda D.; Wragg, Peter D.; Risch, Anita C. (Nature Research, 2019-02)
    Leaf traits are frequently measured in ecology to provide a ‘common currency’ for predicting how anthropogenic pressures impact ecosystem function. Here, we test whether leaf traits consistently respond to experimental ...
  • Learning and laterality in wild-caught Namaqua rock mice (Micaelamys namaquensis) 
    Oosthuizen, Tasha; Lutermann, Heike (Elsevier, 2023-06)
    Individuals often exhibit differences in cognition and/or preferences for one side over the other. Such differences have been attributed to the mating system and lateralization of the brain hemispheres that can differ ...
  • A leatherback turtle stranding at danger point, Gansbaai, South Africa 
    Jewell, Oliver Joseph David; Wcisel, Michelle A. (Southern African Wildlife Management Association, 2012-10)
    A dead, mature male leatherback turtle was sighted at Danger Point, Gansbaai on South Africa’s southwest coast. Leatherback turtle sightings are rare along this coastline although the site lies between two areas of ...