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Helminth ichthyo-parasitic fauna of a South African Sub-Tropical Lake

Thesis (Ph.D. (Zoology)) --University of Limpopo, 2012 / The diversity of the helminth parasites of fishes in a clear-water, subtropical Lake
Tzaneen, in South Africa was investigated. Of the 527 fish specimens sampled
approximately 9000 parasites were collected. There are 38 different parasite species
discussed comprising 27 Monogenea, 3 Digenea, 4 Cestoda, 3 Nematoda and 1
Acanthocephala. Four new monogenean species are described and these are
Dactylogyrus spp. 1 to 4. Three monogenean species are introduced as first records
in Africa and these are Actinocleidus fusiformis (Mueller, 1934), Haplocleidus
furcatus Mueller, 1937 and Acolpenteron ureteroecetes Fischthal & Allison, 1940.
Fourteen monogenean and one acanthocephalan species are discussed as first
geographical records for South Africa and these are Gyrodactylus rysavyi Ergens,
1973, Dactylogyrus brevicirrus Paperna, 1973, Dactylogyrus cyclocirrus Paperna,
1973, Dogielius dublicornis Paperna, 1973, Dogielius sp., Schilbetrema quadricornis
Paperna & Thurston, 1968, Quadriacanthus aegypticus El Naggar & Serag, 1986,
Quadriacanthus clariadis Paperna, 1961, Scutogyrus gravivaginus (Paperna &
Thurston, 1969), Cichlidogyrus quaestio Douëllou, 1993, Cichlidogyrus halli Price &
Kirk, 1967, Cichlidogyrus sclerosus Paperna & Thurston, 1969, Cichlidogyrus
dossoui Douëllou, 1993, Cichlidogyrus tilapiae Paperna, 1960 and Acanthosentis
tilapiae Baylis, 1948. Seven species are discussed as first records for their hosts and
these are Cichlidogyrus dossoui, Cichlidogyrus halli and Acanthosentis tilapiae on
Oreochromis mossambicus; Dactylogyrus sp. 1 on Barbus radiatus and Barbus
trimaculatus; Dactylogyrus sp. 2 on Barbus unitaeniatus; Dactylogyrus sp. 3 and
Dactylogyrus sp. 4 on Labeo molybdinus. Gyrodactylus rysavyi is the only species
with a first site (gills) record. The other monogenean species discussed are
Macrogyrodactylus clarii Gussev, 1961, Macrogyrodactylus karibae (Douellou and
Chishawa, 1995), Dactylogyrus afrolongicornis afrolongicornis Paperna, 1973,
Dactylogyrus allolongionchus Paperna, 1973, Dactylogyrus spinicirrus (Paperna &
Thurston, 1968) and Cichlidogyrus philander (Douëllou, 1993). The digeneans
discussed are Glossidium pedatum Looss, 1899 and the larvae of Diplostomum van
Nordmann, 1832 and Clinostomum Leidy, 1856. The Cestodes discussed are
Proteocephalus glanduligerus (Janicki, 1928) Fuhrmann, 1933, Polyonchobothrium
clarias Woodland, 1925 and the larvae of Ligula intestinalis Goeze, 1782 and family Gryporhynchidae. The nematodes discussed are Procamallanus laevionchus (Wedl,
1861), Paracamallanus cyathopharynx Baylis, 1923 and larvae of Contracaecum
Railliet and Henry, 1912. Monogenea were commonly found on the gills but less on
the skin and in the urinary bladder. Digenea were found mainly in the eyes, brain and
visceral cavity, with only one species (Glossidium pedatum) present in the intestines
of Clarias gariepinus. Cestoda and Nematoda were found in the intestine and body
cavity. Only one species of Acanthocephala (Acanthosentis tilapiae) was found in the
intestines of Oreochromis mossambicus. No definite seasonal variations of infection
and parasite affinities towards the sexes and the sizes of the hosts could be
determined. The lake is oligotrophic with the water quality having no influence on the
parasite diversity and species richness. / the University of Limpopo Research Office, and the National Research Foundation
Date January 2012
CreatorsMatla, Matsoele Moses
ContributorsMashego, S.N., Mokgalong, N.M.
PublisherUniversity of Limpopo (Turfloop Campus)
Source SetsSouth African National ETD Portal
Detected LanguageEnglish
Formatxiv, 281 leaves : ill (some col.)

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