Acta Parasitologica

, Volume 59, Issue 1, pp 17–24 | Cite as

Monogenean parasites from fishes of the Vaal Dam, Gauteng Province, South Africa. I. Winter survey versus summer survey comparison from Labeo capensis (Smith, 1841) and Labeo umbratus (Smith, 1841) hosts

  • Dionne Crafford
  • Wilmien Luus-Powell
  • Annemariè Avenant-Oldewage
Original Paper


Indigenous South African Labeo spp. show promise with regard to development of semi-intensive aquaculture, yet little research on their monogenean fauna has been conducted. Ecological aspects of monogenean fauna of the moggel Labeo umbratus (Smith 1841) and the Orange River mudfish Labeo capensis (Smith 1841), as recorded during both winter and summer sampling surveys, are reported here. Fish were collected using gill nets, euthanized and gills removed and examined to both quantify parasite numbers and distribution on the gills. Results obtained support the hypothesis that gill site preference is not due to active choice for a particular attachment site, but rather a result of water flow over gills during respiration in conjunction with fish behaviour and habitat use. Interaction between individual elements investigated (temperature effects, parasite population dynamics and host population dynamics) may be largely responsible for seasonal differences in infection statistics of monogenean parasites. Such interactions should be investigated in future large scale ecological studies, in combination with experimental studies, to further elucidate these effects.


Monogenea Vaal Dam Labeo spp. Dactylogyrus spp. Dogielius spp. Seasonal 


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Copyright information

© Versita Warsaw and Springer-Verlag Wien 2014

Authors and Affiliations

  • Dionne Crafford
    • 1
  • Wilmien Luus-Powell
    • 2
  • Annemariè Avenant-Oldewage
    • 1
  1. 1.Department of ZoologyUniversity of JohannesburgAuckland ParkSouth Africa
  2. 2.School of Molecular and Life Sciences, Department of BiodiversityUniversity of LimpopoSovengaSouth Africa

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