Articles by Keyword: Tag Recapture

Search results for Tag Recapture

We found 40 results for you
  1. The impact of emigration on population estimates of deep-sea red <em>crab Chaceon maritae</em> off Namibia

    The impact of emigration on population estimates of deep-sea red <em>crab Chaceon maritae</em> off Namibia

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Underwater photography and tag-recapture methods have previously been found to be the most accurate means of assessing the size of the population of Chaceon maritae off southern Africa. However, recent population estimates made by the tag-recapture method appear to be...
  2. Age and growth of two populations of West Coast steenbras Lithognathus aureti in Namibian waters, based on otolith readings and mark-recapture data

    Age and growth of two populations of West Coast steenbras Lithognathus aureti in Namibian waters, based on otolith readings and mark-recapture data

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Age and growth of West Coast steenbras Lithognathus aureti, sampled from two separate populations (northern and southern) along Namibia's coast, was determined using sectioned otoliths, and the results were validated using mark-recapture data. For both populations, the special three-parameter Von...
  3. Long-distance migration of the rock lobster <em>Palinurus delagoae</em> off South Africa and Moçambique

    Long-distance migration of the rock lobster <em>Palinurus delagoae</em> off South Africa and Moçambique

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Long-distance migration patterns of deep-water rock lobster Palinurus delagoae were investigated using tagrecapture data obtained over a period of 6 years (1995–2000). Of 7 654 animals tagged, 363 (4.7%) were recovered from South African and seven (0.1%) from Moçambican waters...
  4. Estimating population size of Saddle-billed Storks <em>Ephippiorhynchus senegalensis</em> in southern Kruger National Park, South Africa

    Estimating population size of Saddle-billed Storks <em>Ephippiorhynchus senegalensis</em> in southern Kruger National Park, South Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Counting Saddle-billed Storks in a study area the size of the Kruger National Park, at 2.2 million ha, is difficult because the birds are long-lived, sparse in the landscape and have large home ranges. Aerial surveys conducted to date provide...
  5. Longshore Movements of Adult Male <em>Jasus Lalandii</em>: Evidence from Long-term Tag Recaptures

    Longshore Movements of Adult Male <em>Jasus Lalandii</em>: Evidence from Long-term Tag Recaptures

    Item type: Journal Article • Journal: African Journal of Marine Science
    Large-scale longshore movements (>10 km) of adult male Jasus lalandii (>70 mm carapace length) were examined on the west coast of South Africa using tag-recapture information from the period 1968 to 2000. The average rate of recovery of tagged rock...
  6. Adult Movement and Larval Dispersal of <em> Argyrozona Argyrozona</em> (Pisces: Sparidae) from a Temperate Marine Protected Area

    Adult Movement and Larval Dispersal of <em> Argyrozona Argyrozona</em> (Pisces: Sparidae) from a Temperate Marine Protected Area

    Item type: Journal Article • Journal: African Journal of Marine Science
    Adult emigration and larval dispersal of carpenter Argyrozona argyrozona from the Tsitsikamma National Park (TNP), South Africa, were investigated using mark-recapture data and Acoustic Doppler Current Profiler measurements of currents. Tagging data showed that adult carpenter were mainly resident, with...
  7. Alternate explanations of the dispersal pattern of galjoen <em>Dichistius capensis</em>

    Alternate explanations of the dispersal pattern of galjoen <em>Dichistius capensis</em>

    Item type: Journal Article • Journal: African Journal of Marine Science
    The movement behaviour of galjoen Dichistius capensis (>250mm total length) was studied by using a tag and recapture technique. A total of 25 191 galjoen was tagged at four sites in South Africa. Three of the sites were in fully...
  8. Do dart tags suppress growth of dusky kob <em>Argyrosomus japonicus</em>?

    Do dart tags suppress growth of dusky kob <em>Argyrosomus japonicus</em>?

    Item type: Journal Article • Journal: African Journal of Marine Science
    Growth rates of dusky kob Argyrosomus japonicus calculated from mark-recapture and otolith-reading methods were compared. Mark-recapture data showed that A. japonicus are resident in an area between the Breede River Estuary and Cape Agulhas on the south-east coast of South...
  9. Distribution and movement of scalloped hammerhead <em>Sphryna lewini</em> and smooth hammerhead <em>Sphyrna zygaena</em> sharks along the east coast of southern Africa

    Distribution and movement of scalloped hammerhead <em>Sphryna lewini</em> and smooth hammerhead <em>Sphyrna zygaena</em> sharks along the east coast of southern Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    Knowledge of population distribution and movement is crucial for the conservation and management of shark species occurring in coastal waters. From 1984 to 2009, 641 scalloped hammerheads Sphyrna lewini, 1 342 smooth hammerheads Sphyrna zygaena and 1 352 unspecified hammerheads...
  10. Population size of neonate and juvenile dusky sharks <em>Carcharhinus obscurus</em> in the Port of Ngqura, South Africa

    Population size of neonate and juvenile dusky sharks <em>Carcharhinus obscurus</em> in the Port of Ngqura, South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    Identifying nearshore waters that serve as important habitats for neonate and juvenile sharks is crucial for effective fisheries management. This study examined the abundance of neonate and juvenile dusky sharks Carcharhinus obscurus within the Port of Ngqura, on the south-east...