Table 1

Sampling site, substrate type, latitude, longitude, year, sample size and prevalence (%) for eight Tropheus populations sampled along the Zambian shore of Lake Tanganyika in August-September 2011 and 2012
Endoparasites Ectoparasites
Site (substrate) Latitude Longitude Year NT/NG Acanthocephala Nematoda Urogyrus Digenea cysts (Gills/Fins) Gyrodactylus Cichlidogyrus Ergasilus Branchiura
Chilanga (r/s) 08° 33’ 22.4” S 30° 37’ 09.7” E 2011 50/40 92 16 0 0 5/4 2 97.5 57.5 0
Linangu (r/s) 08° 32’ 03.5” S 30° 38’ 25.2” E 2011 50/40 94 22 0 0 0/0 4 81.4 45 0
Tumbi (R/s) 08° 42’ 10.7” S 30° 55’ 20.9” E 2011 50/41 73.47 16.33 0 0 7.32/6 4 88.37 24.39 0
2012 40/30 50 0 10 0 13.3/7.5 5 70 33.33 0
Katoto (R/ns) 08° 47’ 51.6” S 31° 01” 11.8” E 2011 55/40 30.77 13.46 7.27 1.92 0/1.82 5.45 100 47.5 2.5
2012 40/31 72.50 25 7.50 2.50 0/2.5 12.50 93.55 29.03 0
Mbita Island (r/s) 08° 44’ 57.1” S 31° 05’ 14.2” E 2011 60/42 86.21 3.45 1.69 0 0/0 1.67 79.07 35.71 2.38
2012 41/30 92.68 4.88 9.76 0 10/2.44 2.44 96.67 46.67 3.33
Wonzye Point (r-sr/ss) 08° 43’ 07.6” S 31° 08’ 12.6” E 2011 50/40 86 10 0 0 2.5/0 4 95.56 40 0
2012 40/29 85 15 2.5 0 3.45/0 5 86.21 27.59 3.44
Muzumwa (r-sr/sss) 08° 42’ 05.7” S 31° 11’ 59.8” E 2011 50/45 95.91 10.20 2 0 0/4 20 95.56 31.11 0
2012 40/30 92.5 5 2.5 0 6.67/0 20 90 36.67 0
Toby’s place (r/ss) 08° 37’ 18.9” S 31° 11’ 59.9” E 2011 50/40 90 6 0 0 0/2 4 76.19 25 2.5
2012 40/30 77.5 5 5 0 0/0 2.50 66.67 30 3.44

Substrate type is categorized according to rock (r: small rocks; R: large rocks; sr: solid rock) and sediment (ns: no sediment; s: few sediment; ss: some sediment; sss: much sediment). NT: total number of individuals screened for parasites. NG: number of individuals screened for parasites on the gills. Groups of parasites which are known from Lake Tanganyika fishes [87], but which were not observed in this study, include pentastomids [88,89], cymothoid parasitic isopods, lernaeid copepods [90], cestodes [89,91] and leeches [92,93]. Of these, the isopods and copepods ( [90]; Vanhove pers. obs.), pentastomids [94], cestodes ( [95]; Vanhove & Pariselle, pers. obs.) were also observed in cichlids, as well as bivalves on the gills (Vanhove & Grégoir, pers. obs.) and the ancyrocephalid monogenean Enterogyrus sp. in the digestive tract (Pariselle, Vanhove, Bamps, Grégoir, Hablützel & Raeymaekers, unpublished data).

Raeymaekers et al.

Raeymaekers et al. BMC Evolutionary Biology 2013 13:41   doi:10.1186/1471-2148-13-41

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