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Browsing by Author "Iwaniuk, Andrew N."

Browsing by Author "Iwaniuk, Andrew N."

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  • Corfield, Jeremy R.; Gsell, Anna C.; Brunton, Dianne; Heesy, Christopher P.; Hall, Margaret I.; Acosta, Monica L.; Iwaniuk, Andrew N. (Public Library of ScienceArts and ScienceDepartment of NeuroscienceUniversity of LethbridgeMassey UniversityMidwestern UniversityUniversity of Auckland, 2011)
    The shift from a diurnal to nocturnal lifestyle in vertebrates is generally associated with either enhanced visual sensitivity or a decreased reliance on vision. Within birds, most studies have focused on differences in ...
  • Cunningham, Susan J.; Corfield, Jeremy R.; Iwaniuk, Andrew N.; Castro, Isabel; Alley, Maurice R.; Birkhead, Tim R.; Parsons, Stuart (Public Library of ScienceArts and ScienceDepartment of NeuroscienceUniversity of Cape TownMassey UniversityUniversity of LethbridgeUniversity of SheffieldUniversity of Auckland, 2013)
    Three families of probe-foraging birds, Scolopacidae (sandpipers and snipes), Apterygidae (kiwi), and Threskiornithidae (ibises, including spoonbills) have independently evolved long, narrow bills containing clusters ...
  • Walsh, Stig A.; Iwaniuk, Andrew N.; Knoll, Monja A.; Bourdon, Estelle; Barrett, Paul M.; Milner, Angela C.; Nudds, Robert L.; Abel, Richard L.; Sterpaio, Patricia Dello (Public Library of ScienceArts and ScienceDepartment of NeuroscienceNational Museums of ScotlandUniversity of LethbridgeUniversity of the West of ScotlandNatural History Museum (London, England)University of ManchesterImperial College, LondonUniversity of Abertay Dundee, 2013)
    Extinct animal behavior has often been inferred from qualitative assessments of relative brain region size in fossil endocranial casts. For instance, flight capability in pterosaurs and early birds has been inferred from ...
  • Krilow, Justin M. (Lethbridge, Alta. : University of Lethbridge, Dept. of NeuroscienceArts and ScienceNeuroscience, 2014-10-03)
    The Ruffed Grouse (Bonasa umbellus) is a resident game bird of North America. Unlike other birds, male Ruffed Grouse do not vocalize during courtship, and are dependent upon ‘drumming’, a ‘wingbeat’ display, for the ...
  • Corfield, Jeremy R.; Price, Kasandra; Iwaniuk, Andrew N.; Gutierrez-Ibanez, Cristian I.; Birkhead, Tim R.; Wylie, Douglas R. (Frontiers MediaArts and ScienceDepartment of NeuroscienceUniversity of AlbertaUniversity of LethbridgeTechnische Universität MünchenUniversity of Sheffield, 2015)
    The relative size of olfactory bulbs (OBs) is correlated with olfactory capabilities across vertebrates and is widely used to assess the relative importance of olfaction to a species’ ecology. In birds, variations in the ...
  • Burger, Danielle K. (Lethbridge, Alta. : University of Lethbridge, Dept. of NeuroscienceArts and ScienceDepartment of Neuroscience, 2014)
    Polychlorinated biphenyls (PCBs) are environmental toxicants that bioaccumulate in the body. PCB 126 is the most toxic PCB congener due to its ability to mimic the effects of dioxins. Here, I examined the effects of early ...
  • Iwaniuk, Andrew N.; University of Lethbridge. Faculty of Arts and Science (Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2000Arts and ScienceDepartment of Pyschology, 2000)
    Emancipating the forelimbs from locomotion for use in other activities, such as food manipulation, is a major evolutionary milestone. A variety of selective forces and evolutionary correlates may influence the evolution ...
  • Sol, Daniel; Garcia, Nuria; Iwaniuk, Andrew N.; Davis, Katie; Meade, Andrew; Boyle, W. Alice; Szekely, Tamas (Public Library of ScienceArts and ScienceDepartment of NeuroscienceAutonomous University of BarcelonaCentre for Advanced Studies of Blanes-Spanish National Research Council-Spanish National Research CouncilUniversity of LethbridgeUniversity of ReadingUniversity of GlasgowUniversity of Western OntarioUniversity of Bath, 2010)
    Despite important recent progress in our understanding of brain evolution, controversy remains regarding the evolutionary forces that have driven its enormous diversification in size. Here, we report that in passerine ...
  • Gutierrez-Ibanez, Cristian I.; Iwaniuk, Andrew N.; Lisney, Thomas J.; Faunes, Macarena; Marin, Gonzalo J.; Wylie, Douglas R. (Public Library of ScienceArts and ScienceDepartment of NeuroscienceUniversity of AlbertaUniversity of LethbridgeUniversidad de ChileUniversidad Finis Terrae, 2013)
    In birds, there is a retinofugal projection from the brain to the retina originating from the isthmo optic nucleus (ION) in the midbrain. Despite a large number of anatomical, physiological and histochemical studies, the ...
  • Wylie, Douglas R.; Gutierrez-Ibanez, Cristian I.; Iwaniuk, Andrew N. (Frontiers MediaArts and ScienceDepartment of NeuroscienceUniversity of AlbertaTechnische Universität MünchenUniversity of Lethbridge, 2015)
    The comparative anatomy of sensory systems has played a major role in developing theories and principles central to evolutionary neuroscience. This includes the central tenet of many comparativestudies, the principle of ...
  • Gutierrez-Ibanez, Cristian I.; Iwaniuk, Andrew N.; Moore, Bret A.; Fernandez-Juricic, Esteban; Corfield, Jeremy R.; Krilow, Justin M.; Kolominsky, Jeffrey; Wylie, Douglas R. (Public Library of ScienceArts and ScienceDepartment of NeuroscienceUniversity of AlbertaUniversity of LethbridgePurdue University, 2014)
    Two main models have been proposed to explain how the relative size of neural structures varies through evolution. In the mosaic evolution model, individual brain structures vary in size independently of each other, whereas ...
  • O'Neil, Nicholas Patrick Paul; University of Lethbridge. Faculty of Arts and Science. (Lethbridge, Alta : University of Lethbridge, Dept. of NeuroscienceArts and ScienceDepartment of Neuroscience, 2016)
    The use of sonations in avian courtship displays is described for many species, however, the function and variation with these non-vocal acoustic displays has rarely been investigated. Perhaps the only well studied sonation ...
  • Aspden, Joel W.; Armstrong, Carol L.; Gutierrez-Ibanez, Cristian I.; Hawkes, Richard; Iwaniuk, Andrew N.; Kohl, Tobias; Graham, David J.; Wylie, Douglas R. (Public Library of ScienceArts and ScienceDepartment of NeuroscienceUniversity of AlbertaMount Royal UniversityTechnische Universität MünchenUniversity of CalgaryUniversity of Lethbridge, 2015)
    Aldolase C, also known as Zebrin II (ZII), is a glycolytic enzyme that is expressed in cerebellar Purkinje cells of the vertebrate cerebellum. In both mammals and birds, ZII is expressed heterogeneously, such that there ...