Articles by Author: A Chakona

Search results for A Chakona

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  1. The effect of plant density on epiphytic macroinvertebrates associated with a submerged macrophyte, <em>Lagarosiphon ilicifolius</em> Obermeyer, in Lake Kariba, Zimbabwe

    The effect of plant density on epiphytic macroinvertebrates associated with a submerged macrophyte, <em>Lagarosiphon ilicifolius</em> Obermeyer, in Lake Kariba, Zimbabwe

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The effect of variations in the density of a submerged macrophyte, Lagarosiphon ilicifolius, on epiphytic macroinvertebrate community structure in the shallow waters of a sheltered bay of Lake Kariba were investigated. The body size class distributions of a mayfly, Cloeon...
  2. Macroinvertebrates associated with two submerged macrophytes, <em>Lagarosiphon ilicifolius</em> and <em>Vallisneria aethiopica</em>, in the Sanyati Basin, Lake Kariba, Zimbabwe: effect of plant morphological complexity

    Macroinvertebrates associated with two submerged macrophytes, <em>Lagarosiphon ilicifolius</em> and <em>Vallisneria aethiopica</em>, in the Sanyati Basin, Lake Kariba, Zimbabwe: effect of plant morphological complexity

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Vallisneria aethiopica and Lagarosiphon ilicifolius are common and abundant submerged macrophytes in Lake Kariba, Zimbabwe. The two species have distinct structural morphologies, with Vallisneria consisting of long ribbon-like leaves, while Lagarosiphon has filiform stems with numerous small alternate leaves. This...
  3. Body-size distribution, biomass estimates and life histories of common insect taxa associated with a submerged macrophyte <em>Lagarosiphon ilicifolius</em> in the Sanyati Basin, Lake Kariba, Zimbabwe

    Body-size distribution, biomass estimates and life histories of common insect taxa associated with a submerged macrophyte <em>Lagarosiphon ilicifolius</em> in the Sanyati Basin, Lake Kariba, Zimbabwe

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The body-size distributions and biomass estimates of Caenis (Ephemeroptera: Caenidae), Cloeon (Ephemeroptera: Baetidae), Coenagrionidae (Odonata), Micronecta (Hemiptera: Corixidae), Chironominae (Diptera: Chironomidae) and Orthocladiinae (Diptera: Chironomidae), the most common and abundant insect taxa associated with a submerged macrophyte Lagarosiphon ilicifolius in...
  4. The effect of fish predation on benthic macroinvertebrates in a seasonal stream in north-western Zimbabwe

    The effect of fish predation on benthic macroinvertebrates in a seasonal stream in north-western Zimbabwe

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The cumulative impact of the entire fish assemblage on benthic macroinvertebrate assemblages was investigated over four months in a removal experiment in isolated pools that persist through the dry season, in an intermittent stream in north-western Zimbabwe. Macroinvertebrate taxonomic richness...
  5. A preliminary assessment of the impact of forest conversion from natural to pine plantation on macroinvertebrate communities in two mountain streams in Zimbabwe

    A preliminary assessment of the impact of forest conversion from natural to pine plantation on macroinvertebrate communities in two mountain streams in Zimbabwe

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    This study presents preliminary data on the influence of forest conversion from natural to pine plantation on benthic macroinvertebrates in streams in the Chimanimani Mountains in the Eastern Highlands of Zimbabwe, a region that has received little attention with respect...
  6. Deep genetic divergence between geographically isolated populations of the goldie barb (<em>Barbus pallidus</em>) in South Africa: potential taxonomic and conservation implications

    Deep genetic divergence between geographically isolated populations of the goldie barb (<em>Barbus pallidus</em>) in South Africa: potential taxonomic and conservation implications

    Item type: Journal Article • Journal: African Zoology
    Barbus pallidus as it is presently defined has a disjunct distribution that is divided between northern and southern populations in South Africa. Sequence data from the cytochrome b gene region showed two distinct lineages that correspond to these geographically distant...
  7. The Maloti minnow Pseudobarbus quathlambae (Barnard, 1938) is not extinct in South Africa

    The Maloti minnow Pseudobarbus quathlambae (Barnard, 1938) is not extinct in South Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Despite concerted surveys, the Maloti minnow Pseudobarbus quathlambae (Barnard 1938) had not been recorded in South African waters for almost eighty years since the original collections were made at the type locality in the upper uMkhomazana River in 1938. The...