Kooperativer Bibliotheksverbund

Berlin Brandenburg

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  • 1
    In: Journal of Medical Primatology, February 2014, Vol.43(1), pp.55-58
    Description: Background The distribution of ciliated cells in the tracheal epithelium of common marmosets was evaluated. Methods Light and scanning electron microscopy of tracheal epithelium was performed. Results Ciliated cells were concentrated in cartilage-free areas and virtually absent in cartilage-supported...
    Keywords: Ciliated Cell ; Common Marmoset ; Scanning Electron Microscopy ; Trachea
    ISSN: 0047-2565
    E-ISSN: 1600-0684
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  • 2
    In: American Journal of Primatology, May 2015, Vol.77(5), pp.579-594
    Description: Parasitism is expected to impact host morbidity or mortality, although the fitness costs of parasitism have rarely been quantified for wildlife hosts. Tapeworms in the genus Taenia exploit a variety of vertebrates, including livestock, humans, and geladas (Theropithecus gelada), monkeys endemic to the alpine grasslands of Ethiopia. Despite Taenia's adverse societal and economic impacts, we know little about the prevalence of disease associated with Taenia infection in wildlife or the impacts of this disease on host health, mortality and reproduction. We monitored geladas at Guassa, Ethiopia over a continuous 6½ year period for external evidence (cysts or coenuri) of Taenia-associated disease (coenurosis) and evaluated the impact of coenurosis on host survival and reproduction. We also identified (through genetic and histological analyses) the tapeworms causing coenurosis in wild geladas at Guassa as Taenia serialis. Nearly 1/3 of adult geladas at Guassa possessed ≥1 coenurus at some point in the study. Coenurosis adversely impacted gelada survival and reproduction at Guassa and this impact spanned two generations: adults with coenuri suffered higher mortality than members of their sex without coenuri and offspring of females with coenuri also suffered higher mortality. Coenurosis also negatively affected adult reproduction, lengthening interbirth intervals and reducing the likelihood that males successfully assumed reproductive control over units of females. Our study provides the first empirical evidence that coenurosis increases mortality and reduces fertility in wild nonhuman primate hosts. Our research highlights the value of longitudinal monitoring of individually recognized animals in natural populations for advancing knowledge of parasite-host evolutionary dynamics and offering clues to the etiology and control of infectious disease.
    Keywords: Wildlife Disease Ecology ; Parasites ; Reproduction ; Mortality
    ISSN: 0275-2565
    E-ISSN: 1098-2345
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  • 3
    In: Journal of Medical Primatology, April 2013, Vol.42(2), pp.79-88
    Description: Keywords: Clara cell secretory protein; electron microscopy; goblet cell; mixed type secretory cell; mucin Abstract Background The objective of this investigation was to define the phenotype and spatial distribution of Clara cells within the respiratory tract of common marmosets and to distinguish them from other non-ciliated cells (goblet cells, mixed type secretory cells). Methods Non-ciliated cells were identified immunohistochemically using antibodies against Clara cell secretory protein and mucin 5AC. Transmission electron microscopy and scanning electron microscopy were performed to characterize Clara cells ultrastructurally. Results Clara cells were present throughout the tracheobronchial tree, with lowest numbers in the trachea and highest numbers in bronchioles. Goblet cells and mixed type cells were scarce in the upper conducting airways and virtually absent within bronchioles. Ultrastructurally, Clara cells showed typical apical electron-dense granules and a prominent granular endoplasmatic reticulum. Conclusions Clara cells of common marmosets have species-specific morphological characteristics, which suggest grouping the common marmoset phenotypically between primates and rodents. Author Affiliation:
    Keywords: Clara Cell Secretory Protein ; Electron Microscopy ; Goblet Cell ; Mixed Type Secretory Cell ; Mucin
    ISSN: 0047-2565
    E-ISSN: 1600-0684
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