SciELO - Scientific Electronic Library Online

vol.76 número2Molasses as a possible cause of an "endocrine disruptive syndrome" in calvesTick infestation, and udder and teat damage in selected cattle herds of Matabeleland South, Zimbabwe índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados



Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Em processo de indexaçãoSimilares em Google


Onderstepoort Journal of Veterinary Research

versão On-line ISSN 2219-0635
versão impressa ISSN 0030-2465

Onderstepoort j. vet. res. vol.76 no.2 Cape Town  2009




Ecological parameters of Lamproglena hoi (Copepoda: Lernaeidae) infection on the Bushveld smallscale yellowfish, Labeobarbus polylepis (Boulenger, 1907)



A. Austin; A. Avenat-Oldewage

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




This study describes the distribution and aspects of the ecology of Lamproglena hoi. Bushveld small-scale yellowfish, Labeobarbus polylepis (Boulenger, 1907) were collected during June 2006 from the Phongolo and Assegaai rivers, March 2005 and October 2006 from the Elands River, and January 2007 and June 2008 from the Komati River in Mpumalanga, South Africa and examined for the presence of parasites. Lamproglena hoi specimens were collected from the gill filaments of the host. Specimens were fixed with warm AFA (alcohol-formaldehyde-acetic acid) and preserved in 70 % ethanol. The identification of parasites took place in the laboratories of the University of Johannesburg. Twenty-five copepods (prevalence 21 %, mean intensity = 4.17, abundance = 0.86) were collected on 29 fish in the Phongolo River and 46 copepods (prevalence 40 %, mean intensity = 3.83, abundance = 1.53) were collected on 30 fish in the Assegaai River. One hundred and sixty eight copepods (prevalence 52 %, mean intensity = 12.92, abundance = 6.72) were collected on 25 fish in 2005, and 527 copepods (prevalence 95 %, mean intensity = 27.74, abundance = 26.35) were collected on 20 fish in the Elands River. One hundred and sixteen copepods (prevalence 75 %, mean intensity = 7.73, abundance = 5.80) were collected on 20 fish in 2007, and 273 copepods (prevalence 63 %, mean intensity = 16.06, abundance = 10.11) were collected on 27 fish in 2008 in the Komati River. Labeobarbus polylepis from these four rivers was found to have a relatively high L. hoi infection. Inseminated L. hoi females (immature) attach to the host in winter and their ovaries become conspicuous (mature). In spring fertilized eggs are stored in egg sacs hanging from the body (gravid), indicating that fertilized eggs start to hatch in spring and continued hatching into summer. Parasites prefer the median part of the second gill arch for attachment. No correlation exists between the number of parasites recorded on the gills and the sizes (total lengths) of yellowfish sampled.

Keywords: Copepoda, Crustacea, ecology, Labeobarbus polylepis, Lamproglena hoi, yellowfish



“Full text available only in PDF format”




AVENANT-OLDEWAGE, A. 2003. Lamproglena and Lernaea (Copepoda) as possible bio-indicators of environmental deterioration in the Olifants River. Journal of South African Veterinary Association, 72:96.         [ Links ]

BUSH, A.O., LAFFERTY, K.D., LOTZ, J.M. & SHOSTAK, A.W. 1997. Parasitology meets ecology on its own terms: Margolis et al. revisited. Journal of Parasitology, 83:575-583.         [ Links ]

DIPPENAAR, S.M., LUUS-POWELL, W.J. & ROUX, F. 2001. Lamproglena hoi n. sp. (Copepoda: Lernaeidae) from two yellowfish hosts, Barbus marequensis and Barbus polylepis, caught in a river in Mpumalanga, South Africa. Onderstepoort Journal of Veterinary Research, 68:209-215.         [ Links ]

FERREIRA, M., WEPENER, V. & VAN VUREN, J.H.J. 2008. Die invloed van papierpulpmeule-aktiwiteite op die visgemeen-skapstruktuur van die Elandsrivier, Mpumalanga. Tydskrif vir Natuurwetenskap en Tegnologie, 27:83-94.         [ Links ]

FRYER, G. 1968. The parasitic Crustacea of African freshwater fishes; their biology and distribution. Journal of Zoology, London, 156:45-95.         [ Links ]

KHAN, R.A. & THULIN, J. 1991. Influence of pollution on parasites of aquatic animals. Advanced Parasitology, 30:201-238.         [ Links ]

LO, C.M., MORAND, S. & GALZIN, R. 1998. Parasite diversity/ host age and size relationship in three coral-reef fishes from French Polynesia. International Journal for Parasitology, 28: 1695-1708.         [ Links ]

MARCOGLIESE, D.J. 1991. Seasonal occurrences of Lernaea cyprinacea on fishes in Belews Lake, North Carolina. Journal of Parasitology 77:326-327.         [ Links ]

MARX, H.M. & AVENANT-OLDEWAGE, A. 1996. Redescription of Lamproglena clariae Fryer, 1956 (Copepoda, Lernaeidae), with notes on its occurrence and distribution. Crustaceana, 69:503-523.         [ Links ]

MOLL, J. & AVENANT-OLDEWAGE, A. 2008. 'n Oorsig oor die verspreiding, taksonomie en aspekte van die ekologie van die genus Lamproglena (copepoda), 'n ektoparasiet op die kieue van visse. Tydskrif vir Natuurwetenskap en Tegnologie, 27:107-124.         [ Links ]

ROHDE, K. 1993. Ecology of marine parasites. Wallingford, UK: CAB International.         [ Links ]

SKELTON, P. 2001. A complete guide to the freshwater fishes of Southern Africa, 2nd ed. Halfway House: Southern Book Publishers.         [ Links ]

SPROSTON, N.G., YIN, W.Y. & HU, T. 1950. The genus Lamproglena (Copepoda Parasitica): the discovery of the life-histories and males of two Chinese species from food fishes, revealing their relationship with Lernaea, and of both to the cyclopoidea. Sinensia, N.S. 1:51-54.         [ Links ]

TSOTETSI, A.M., AVENANT-OLDEWAGE, A. & MASHEGO, S.N. 2004. Aspects of the ecology of Lamproglena clariae (Copepoda: Lernaeidae) from the Vaal River system, South Africa. Journal of Crustacean Biology, 24:529-536.         [ Links ]

VON NORDMANN, A. 1832. Mikrographische Beiträge zur Naturgeschichte der wirbellosen Tiere. Zweites Heft. Berlin: G. Reimer.         [ Links ]



Accepted for publication 12 November 2008-Editor



* E-mail address:

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons