Articles by Keyword: Tagging

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  1. Sharks caught in the protective gill nets off KwaZulu-Natal, South Africa. 10. The dusky shark <em>Carcharhinus obscurus</em> (Lesueur 1818)

    Sharks caught in the protective gill nets off KwaZulu-Natal, South Africa. 10. The dusky shark <em>Carcharhinus obscurus</em> (Lesueur 1818)

    Item type: Journal Article • Journal: African Journal of Marine Science
    Between 1978 and 1999, a total of 5 626 dusky sharks Carcharhinus obscurus, constituting 20% of the total shark catch, was caught in the protective nets off KwaZulu-Natal, South Africa. The mean annual catch was 256 sharks (SD = 107.5,...
  2. Factors affecting recapture rates of raggedtooth sharks <em>Carcharias taurus</em> tagged off the east coast of South Africa

    Factors affecting recapture rates of raggedtooth sharks <em>Carcharias taurus</em> tagged off the east coast of South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    Understanding differences in the recapture rate between different tags (A-, B- and C-types), capture methods (rock-and-surf anglers, scientific divers and Natal Sharks Board protection nets) and life-history stages (juvenile and adult) is critical in evaluating the results obtained from cooperative...
  3. Movements and habitat utilization of nembwe, <em>Serranochromis robustus</em> (Günther, 1864), in the Upper Zambezi River

    Movements and habitat utilization of nembwe, <em>Serranochromis robustus</em> (Günther, 1864), in the Upper Zambezi River

    Item type: Journal Article • Journal: African Zoology
    Fifteen adult nembwe Serranochromis robustus (Günther, 1864) were tagged with radio transmitters in the Zambezi River, Namibia, from 4–15 November 2000 to record behaviour and outline the implications for fisheries management. The fish were tracked on average every 3.7 days...
  4. Validation of growth zone deposition in otoliths of two large endemic cyprinids in Lake Gariep, South Africa

    Validation of growth zone deposition in otoliths of two large endemic cyprinids in Lake Gariep, South Africa

    Item type: Journal Article • Journal: African Zoology
    We tested the hypothesis that growth zones in the astericus otoliths of smallmouth yellowfish (Labeobarbus aeneus) and Orange River mudfish (Labeo capensis) were deposited annually. Two methods, fluorochrome marking and edge analysis of otoliths were used. For fluorochrome marking, specimens...
  5. Growth rate of speckled snapper <em>Lutjanus rivulatus</em> (Teleostei: Lutjanidae) based on tag-recapture data from the iSimangaliso Wetland Park, South Africa

    Growth rate of speckled snapper <em>Lutjanus rivulatus</em> (Teleostei: Lutjanidae) based on tag-recapture data from the iSimangaliso Wetland Park, South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    The growth rate of speckled snapper Lutjanus rivulatus was investigated using data from a long-term tag-recapture study conducted in the St Lucia Marine Reserve within the iSimangaliso Wetland Park, a World Heritage Site in northern KwaZulu-Natal, South Africa. A total...
  6. Retention of plastic-tipped dart tags in African tigerfish <em>Hydrocynus vittatus</em>

    Retention of plastic-tipped dart tags in African tigerfish <em>Hydrocynus vittatus</em>

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Estimates of tag retention and tagging-related mortality are essential for mark-recapture experiments. Mortality and tag loss were estimated from 15 tigerfish Hydrocynus vittatus marked using Hallmark model PDL plastic-tipped dart tags released into a 1 730 m2 pond at Kamutjonga...
  7. Movement patterns of an endangered fishery species, <em>Lithognathus lithognathus</em> (Sparidae), and the role of no-take marine protected areas as a management tool

    Movement patterns of an endangered fishery species, <em>Lithognathus lithognathus</em> (Sparidae), and the role of no-take marine protected areas as a management tool

    Item type: Journal Article • Journal: African Journal of Marine Science
    Understanding movement behaviour is essential for effective management of fishery species. Dart tags were used to study coastal movement patterns of white steenbras Lithognathus lithognathus, an overexploited seabream (Sparidae) in South Africa. In total, 6 962 fish (190–1 080 mm...