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

• Autorzy: Crafford D. , Luus-Powell W. , Avenant-Oldewage A.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

monogenean parasite; infection; fish; Vaal dam; Gauteng Province; South Africa; Labeo umbratus; Labeo capensis; Dactylogyrus

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 2014
• Tom: 59
• Numer: 1
• Opis fizyczny: p.17-24,fig.,ref.

Twórcy

autor

Crafford D.

• Department of Zoology, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa

autor

Luus-Powell W.

• School of Molecular and Life Sciences, Department of Biodiversity, University of Limpopo, P/Bag X 1106, Sovenga 0727, South Africa

autor

Avenant-Oldewage A.

• Department of Zoology, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa

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