Browsing Research Articles (Zoology and Entomology) by Title

Browsing Research Articles (Zoology and Entomology) by Title

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  • Naked mole-rat brown fat thermogenesis is diminished during hypoxia through a rapid decrease in UCP1 
    Cheng, Hang; Sebaa, Rajaa; Malholtra, Nikita; Lacoste, Baptiste; El Hankouri, Ziyad; Kirby, Alexia; Bennett, Nigel Charles; Van Jaarsveld, Barry; Hart, Daniel William; Tattersall, Glenn J.; Harper, Mary-Ellen; Pamenter, Matthew E. (Nature Publishing Group, 2021-11-23)
    Naked mole-rats are among the most hypoxia-tolerant mammals. During hypoxia, their body temperature (Tb) decreases via unknown mechanisms to conserve energy. In small mammals, non-shivering thermogenesis in brown adipose ...
  • Naked mole-rats (Heterocephalus glaber) do not specialise in cooperative tasks 
    Siegmann, S.; Feitsch, R.; Hart, Daniel William; Bennett, Nigel Charles; Penn, Dustin J.; Zottl, Markus (Wiley, 2021-10)
    It has been proposed that naked mole-rat (Heterocephalus glaber) societies resemble those of eusocial insects by showing a division of labour among non-breeding individuals. Earlier studies suggested that non-breeders ...
  • Native-alien populations—an apparent oxymoron that requires specific conservation attention 
    Nelufule, Takalani; Robertson, Mark P.; Wilson, John R.U.; Faulkner, Katelyn T. (Pensoft Publishers, 2022-06-10)
    Many countries define nativity at a country-level—taxa are categorised as either alien species or native species. However, there are often substantial within-country biogeographical barriers and so a taxon can be native ...
  • Natural and within-farmland biodiversity enhances crop productivity 
    Carvalheiro, Luísa G.; Veldtman, Ruan; Shenkute, Awraris Getachew; Tesfay, Gebreamlak Bezabih; Pirk, Christian Walter Werner; Donaldson, John Sydney; Nicolson, Sue W. (Wiley-Blackwell, 2011-03)
    Ongoing expansion of large-scale agriculture critically threatens natural habitats and the 3 pollination services they offer. Creating patches with high plant diversity within farmland is 4 commonly suggested as a measure ...
  • A natural gene drive system influences bovine tuberculosis susceptibility in African buffalo : possible implications for disease management 
    Van Hooft, Pim; Getz, Wayne Marcus; Greyling, Barend Jacobus; Bastos, Armanda D.S. (Public Library of Science, 2019-09-04)
    Bovine tuberculosis (BTB) is endemic to the African buffalo (Syncerus caffer) of HluhluweiMfolozi Park (HiP) and Kruger National Park, South Africa. In HiP, the disease has been actively managed since 1999 through a ...
  • Natural parasite infection affects the tolerance but not the response to a simulated secondary parasite infection 
    Lutermann, Heike; Bodenstein, Chimone; Bennett, Nigel Charles (2012-12-27)
    Parasites deplete the resources of their host and can consequently affect the investment in competing traits (e.g. reproduction and immune defence). The immunocompetence handicap hypothesis posits that testosterone (T) ...
  • Nectar concentration affects sugar preferences in two Australian honeyeaters and a lorikeet 
    Fleming, Patricia A.; Xie, S.; Napier, Kathryn R.; McWhorter, Todd J.; Nicolson, Sue W. (Blackwell, 2008)
    Understanding avian diet preferences reveals a great deal about the birds' digestive physiology and relationships with food plants, and can make a valuable contribution towards directing physiological and ecological research. ...
  • Nectar intake and foraging efficiency : the responses of sunbirds to flower morphology 
    Ngcamphalala, Celiwe Angel; Bailey, Ida E.; Nicolson, Sue W. (Springer, 2018-10)
    Floral traits vary greatly between plant species, and determine which pollinators are physically capable of accessing floral rewards and carrying out effective pollination. Research on the responses of nectarivorous birds ...
  • Nectar intake of White-Bellied Sunbirds (Cinnyris talatala) : can meal size be inferred from feeding duration? 
    Koehler, Angela; Verburgt, Luke; Nicolson, Sue W. (University of Chicago Press, 2008)
    A positive relationship between feeding duration and meal size of avian nectarivores has often been assumed in earlier studies. We investigated whether feeding duration can be used as a surrogate for the amount of sugar ...
  • Nectar palatability can selectively filter bird and insect visitors to coral tree flowers 
    Nicolson, Sue W.; Lerch-Henning, Sara; Welsford, Megan; Johnson, Steven D. (Springer, 2015-03)
    Secondary compounds in nectar may play a decisive role in determining the spectrum of floral visitors on plants. Flowers of the African coral tree Erythrina caffra are visited mainly by generalist passerine nectarivores, ...
  • Need for shared internal mound conditions by fungus-growing Macrotermes does not predict their species distributions, in current or future climates 
    Seymour, Colleen L.; Korb, Judith; Joseph, Grant S.; Hassall, Richard; Coetzee, Bernard Walter Thomas (Royal Society, 2023-08)
    The large, iconic nests constructed by social species are engineered to create internal conditions buffered from external climatic extremes, to allow reproduction and/or food production. Nest-inhabiting eusocial Macrotermitinae ...
  • Neonicotinoid insecticides can serve as inadvertent insect contraceptives 
    Straub, Lars; Villamar-Bouza, Laura; Bruckner, Selina; Chantawannakul, Panuwan; Gauthier, Laurent; Khongphinitbunjong, Kitiphong; Retschnig, Gina; Troxler, Aline; Vidondo, Beatriz; Neumann, Peter; Williams, Geoffrey R. (The Royal Society, 2016-05-06)
    There is clear evidence for sublethal effects of neonicotinoid insecticides on non-target ecosystem service-providing insects. However, their possible impact on male insect reproduction is currently unknown, despite the ...
  • Neonicotinoid pesticides can reduce honeybee colony genetic diversity 
    Forfert, Nadege; Troxler, Aline; Retschnig, Gina; Gauthier, Laurent; Straub, Lars; Moritz, Robin F.A.; Neumann, Peter; Williams, Geoffrey R. (Public Library of Science, 2017-10-23)
    Neonicotinoid insecticides can cause a variety of adverse sub-lethal effects in bees. In social species such as the honeybee, Apis mellifera, queens are essential for reproduction and colony functioning. Therefore, any ...
  • Neonicotinoid pesticides severely affect honey bee queens 
    Williams, Geoffrey R.; Troxler, Aline; Retsching, Gina; Roth, Kaspar; Yanez, Orlando; Shutler, Dave; Neumann, Peter; Gauthier, Laurent (Nature Publishing Group, 2015-10-13)
    Queen health is crucial to colony survival of social bees. Recently, queen failure has been proposed to be a major driver of managed honey bee colony losses, yet few data exist concerning effects of environmental stressors ...
  • Neonicotinoids decrease sucrose responsiveness of honey bees at first contact 
    Démares, Fabien J.; Demares, Fabien J.; Pirk, Christian Walter Werner; Nicolson, Sue W.; Human, Hannelie (Elsevier, 2018-07)
    For two decades, neonicotinoid insecticides have been extensively used worldwide. Targeting neuronal receptors, they have deleterious effects on the behaviour and physiology of many insects. Bees are exposed to these ...
  • Nest architecture as a tool for species discrimination of Hypotrigona species (Hymenoptera: Apidae: Meliponini) 
    Ndungu, Nelly N.; Yusuf, Abdullahi Ahmed; Raina, S.K.; Masiga, D.K.; Pirk, Christian Walter Werner; Nkoba, K. (Entomological Society of Southern Africa, 2019-03)
    Hypotrigona species are difficult to identify morphologically. Here, we show that nest sites and nest architecture can be used to discriminate three Hypotrigona species found in Kenya. Hypotrigona gribodoi, H. araujoi and ...
  • Nest sites selection by sympatric cavity-nesting birds in miombo woodlands 
    Nyirenda, Vincent R.; Chewe, Felistus C.; Chisha-Kasumu, Exildah; Lindsey, Peter Andrew (AOSIS Open Journals, 2016-07-26)
    Deforestation and habitat fragmentation have long been known as drivers of wildlife depletion but information on their specific impacts on cavity-nesting birds in the miombo woodlands has been lacking. A comparative study ...
  • Nestmate recognition and the role of cuticular hydrocarbons in the African termite raiding ant Pachycondyla analis 
    Yusuf, Abdullahi Ahmed; Pirk, Christian Walter Werner; Crewe, Robin M.; Njagi, Peter G.N.; Gordon, Ian; Torto, Baldwyn (Springer, 2010-04)
    Cuticular hydrocarbons (CHCs) are used for chemical communication among nestmates in many ant species, and they may play a role in the discrimination of nestmates and non-nestmates. Using the mandible opening response ...
  • Net effects of multiple stressors in freshwater ecosystems : a meta-analysis 
    Jackson, Michelle C.; Loewen, Charlie J.G.; Vinebrooke, Rolf D.; Chimimba, Christian Timothy (Wiley, 2016-01)
    The accelerating rate of global change has focused attention on the cumulative impacts of novel and extreme environmental changes (i.e. stressors), especially in marine ecosystems. As integrators of local catchment and ...
  • Network topology of stable isotope interactions in a sub-arctic raptor guild 
    Dalerum, Fredrik; Hellström, P.; Miranda, M.; Nyström, J.; Ekenstedt, J.; Angerbjörn, A. (Springer, 2016-10)
    Predation is an ecologically important process, and intra-guild interactions may substantially influence the ecological effects of predator species. Despite a rapid expansion in the use of mathematical graph theory to ...