Articles by Keyword: Parasite

Search results for Parasite

We found 19 results for you
  1. The resistance of guar (<em>Cyamopsis tetragonoloba</em> (L.) Taub.) to attack by the root parasitic <em>Alectra vogelii</em> (Benth.)

    The resistance of guar (<em>Cyamopsis tetragonoloba</em> (L.) Taub.) to attack by the root parasitic <em>Alectra vogelii</em> (Benth.)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The nature of the resistance of guar to attack by the root parasitic A. vogelii was investigated, it was found that although seed of the parasite was induced to germinate in the presence of stimulants, radicle elongation was prevented owing...
  2. The occurrence of the tapeworm <em>Ligula intestinalis</em> (L.), in <em>Barbus paludinosus</em> from a small dam in Zimbabwe

    The occurrence of the tapeworm <em>Ligula intestinalis</em> (L.), in <em>Barbus paludinosus</em> from a small dam in Zimbabwe

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Cestode parasites were collected from Barbus paludinosus from Munwahuku Dam near Harare, Zimbabwe over a period of 13 months. Plerocercoids of Ligula intestinalis were found in 7.2% of the fish. The majority of the infected fish carried one parasite, with...
  3. Checklist of the fish parasitic genus <em>Cichlidogyrus</em> (Monogenea), including its cosmopolitan distribution and host species

    Checklist of the fish parasitic genus <em>Cichlidogyrus</em> (Monogenea), including its cosmopolitan distribution and host species

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Current knowledge of the 85 species in the genus Cichlidogyrus, collected worldwide, including their hosts, localities and authors, is summarised in a table. Although these parasites occur mainly in Africa, representatives have been recorded on cichlids in Mexico. Their distribution...
  4. A comparative assessment of the health status of feral populations of <em>Clarias gariepinus</em> from three dams in the Limpopo and Olifants river systems, Limpopo province, South Africa, using the fish health assessment index protocol

    A comparative assessment of the health status of feral populations of <em>Clarias gariepinus</em> from three dams in the Limpopo and Olifants river systems, Limpopo province, South Africa, using the fish health assessment index protocol

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    An evaluation of the health status of feral populations of the freshwater catfish Clarias gariepinus was carried out between 2009 and 2010 at three dams in the Limpopo and Olifants river systems with varying levels of human impact. Fish health...
  5. Ecological status of Hout River Dam, Limpopo province, South Africa, using fish condition and health assessment index protocols: a preliminary investigation

    Ecological status of Hout River Dam, Limpopo province, South Africa, using fish condition and health assessment index protocols: a preliminary investigation

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The ecological status of Hout River Dam was evaluated in 2011 by assessing fish health, based on condition factor (K), health assessment index (HAI) and inverted parasite index (IPI), which provided a simple and rapid means of establishing the health...
  6. Analytical detection of parasite infection of <em>Dinophysis norvegica</em> using FISH probes

    Analytical detection of parasite infection of <em>Dinophysis norvegica</em> using FISH probes

    Item type: Journal Article • Journal: African Journal of Marine Science
    Parasites of the genus Amoebophrya infect several free-living dinoflagellates, including harmful species. Whereas advanced infection can be easily detected, earlier stages of infection are more difficult to establish. rRNA-based fluorescent in situ hybridisation (FISH) probes specific to Amoebophrya sp. infecting...
  7. Exploring the potential of host-environment relationships in the control of schistosomiasis in Africa

    Exploring the potential of host-environment relationships in the control of schistosomiasis in Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    A number of human disease prevalences are supported by host-parasite-environment interactions. One such disease is schistosomiasis. Schistosoma parasites are transmitted between the snail intermediate hosts and mammalian definitive hosts in an aquatic environment. This host-environment link determines the parasite transmission...
  8. Host use does not clarify the evolutionary history of African ticks (Acari: Ixodoidea)

    Host use does not clarify the evolutionary history of African ticks (Acari: Ixodoidea)

    Item type: Journal Article • Journal: African Zoology
    Where host-parasite associations are rigid and unique, the host preference(s) of parasites and the evolutionary relationships between their hosts may offer insights into the parasites’ evolu–tionary history. Where such associations are less rigid, however, the assumption that current host preferences...
  9. Aspects of the pathology of <em>Lamproglena clariae</em> (Copepoda: Lernaeidae) on gills of <em>Clarias gariepinus</em> from the Vaal River system, South Africa

    Aspects of the pathology of <em>Lamproglena clariae</em> (Copepoda: Lernaeidae) on gills of <em>Clarias gariepinus</em> from the Vaal River system, South Africa

    Item type: Journal Article • Journal: African Zoology
    Lamproglena clariae attaches to gill filaments of Clarias gariepinus, penetrates the gill tissue and consumes blood. Hence, the purpose of this study was to investigate the mechanical damage caused by this parasite on gill filaments of the host. Infestation intensity...
  10. Tick infestations in the Namaqualand speckled padloper, <em>Homopus signatus signatus</em> (Gmelin, 1789)

    Tick infestations in the Namaqualand speckled padloper, <em>Homopus signatus signatus</em> (Gmelin, 1789)

    Item type: Journal Article • Journal: African Zoology
    Many terrestrial chelonians are parasitized by ticks, but we have a poor understanding of what determines tick infestations on chelonian hosts. We counted ticks on Homopus signatus signatus during each spring in the years 2001–2004, and evaluated tick frequencies in...