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Browsing Research Articles (Anatomy and Physiology) by UP Author "Soley, John Thomson"
Now showing items 1-20 of 37
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Du Plessis, Lizette; Soley, John Thomson (Elsevier, 2012-04)Abaxial tail implantation is a defect occurring in the neck region of spermatozoa and is characterized by misalignment of the centriolar complex relative to the head base. This defect has been described in a number of ...
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Crole, Martina Rachel; Soley, John Thomson (Wiley, 2017-09)A specialized region of the bill tip characterized by a complex arrangement of mechanoreceptors and referred to as a bill tip organ, has been identified in numerous avians. A bill tip organ was initially inferred in kiwi ...
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Crole, Martina Rachel; Soley, John Thomson (Wiley, 2014-07)Herbst corpuscles are widely distributed throughout the oropharynx of the ostrich and emu in contrast to the general situation in birds. Knowledge of the comparative distribution of Herbst corpuscles in the oropharynx of ...
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A comparative overview of the sperm centriolar complex in mammals and birds : variations on a theme Soley, John Thomson (Elsevier, 2016-06)This paper presents an overview of the structure, function and anomalies of the sperm centriolar complex (CC) on a comparative basis between mammals and birds. The information is based on selected references from the ...
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Crole, Martina Rachel; Soley, John Thomson (Springer, 2015-09)This study, facilitated by the use of immunohistochemistry, indicated the presence of taste buds in Dromaius novaehollandiae but not in Struthio camelus. Seen at the light microscope level, the taste buds consisted of ...
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Crole, Martina Rachel; Soley, John Thomson (Wiley-Blackwell, 2011-07)The glandular regions of the upper digestive tract in the emu were non-pigmented (except for the tongue in most specimens) and invested by a non-keratinised stratified squamous epithelium. The glands found in these ...
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Botha, Alma Ester; Schulman, M.L. (Martin); Birrell, John R.; Du Plessis, Lizette; Laver, Pete N.; Soley, John Thomson; Colenbrander, Ben; Bertschinger, Hendrik Jan (Wiley, 2022-08)The effects of the GnRH vaccine Improvac® on testicular and epididymal morphometrics, histology and spermatogenesis were measured in 19 young (15–20 months) colts randomly assigned to one control (saline, castration at 57 ...
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Crole, Martina Rachel; Soley, John Thomson (BioMed Central, 2013-08-21)BACKGROUND: Tonsils are secondary lymphoid organs located in the naso- and oropharynx of most mammalian species. Most tonsils are characterised by crypts surrounded by dense lymphoid tissue. However, tonsils without crypts ...
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Birgfellner, Caroline Maria Victoria; Soley, John Thomson; Polsterer, Eva; Forstenpointner, Gerhard; Weissengruber, Gerald Erwin (Wiley, 2023-03)In this study, we present not only a new and detailed anatomical description of the epaxial muscles and adjacent ligamentous and fascial structures in the African sa-vanna elephant but also a ...
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Tivane, Catarina; Rodrigues, Marcio N.; Soley, John Thomson; Groenewald, Hermanus B. (Colégio Brasileiro de Patologia Animal, 2011-06)Most descriptions of the ostrich oropharynx and oesophagus are superficial and supply little meaningful morphological data. The aim of this investigation is describe the ostrich oropharingeal cavity, in order to supply ...
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Crole, Martina Rachel; Soley, John Thomson (Springer, 2012-09)The tongue body of Rhea americana is triangular and partially pigmented with each caudo-lateral margin displaying a round, sub-divided lingual papilla. The tongue root is a smooth, non-pigmented tract of mucosa. The ...
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Soley, John Thomson; Tivane, Catarina; Crole, Martina Rachel (Wiley, 2015-10)The ostrich hyobranchial apparatus consists of the centrally positioned paraglossalia and basiurohyale and paired caudo-lateral elements (horns), each consisting of the ceratobranchiale and epibranchiale. The paraglossalia ...
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Du Plessis, Lizette; Soley, John Thomson (Elsevier, 2011-10)The accurate assessment of avian sperm abnormalities is hampered by a lack of descriptive data and by the confusing terminology currently in use. Critical appraisal of semen samples from the distal ductus deferens of the ...
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Du Plessis, Lizette; Soley, John Thomson (Elsevier, 2011-03)Little detailed information is currently available on the incidence and morphological characteristics of abnormal sperm in the emu (Dromaius novaehollandiae) and of ratites in general. This situation is further compounded ...
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Crole, Martina Rachel; Soley, John Thomson; Clift, Sarah Jane (OpenJournals Publishing, 2013-10-30)Avian mycobacteriosis (AM) is a zoonotic disease caused by Mycobacterium avium complex (MAC), which can spread from avians to other farmed animals such as cattle and pigs as well as to humans. This study is the first ...
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Du Plessis, Lizette; Soley, John Thomson (Elsevier, 2014-01)A comprehensive morphologic description of emu sperm at the light microscopy level, an essential prerequisite for the routine evaluation of semen quality in this species, is not currently available. In this study, sperm ...
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Elias, M.Z.J. (Mario Zefanias Joao); Aire, Tom A.; Soley, John Thomson (Blackwell, 2007-08)The macroscopic features of the arterial supply to the reproductive system of the male ostrich was studied in 16 pre-pubertal and eight sexually mature and active birds. The left and right cranial renal arteries arise from ...
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Elias, M.Z.J. (Mario Zefanias Joao); Aire, Tom A.; Soley, John Thomson (Agricultural Research Council, ARC-OVI and the University of Pretoria, 2008-12)The macroscopic features of the venous drainage of the reproductive system of the male ostrich were studied in six pre-pubertal and three sexually mature and active birds. Each testis was drained by one to four testicular ...
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Ozegbe, P.C.; Aire, Tom A.; Madekurozwa, Mary-Catherine; Soley, John Thomson (Springer, 2008-04)The testicular capsule and peritubular boundary tissue of the emu and ostrich, as typical representatives of ratite birds, were studied in sexually mature and active birds. The testicular capsule was much thicker (578.1±73.4 ...
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Du Plessis, Lizette; Malecki, Irek; Bonato, Maud; Smith, Marna; Cloete, Schalk; Soley, John Thomson (Elsevier, 2014-11)Commercial ostrich farming is constrained by the absence of a formal animal recordingand evaluation scheme as well as by current farming practices. Artificial insemination mayhave an important role in overcoming these ...
Now showing items 1-20 of 37