Risk factors
No. of fishes examined
No. of fish with parasites (%)
Parasites Burden (%)
χ
2
(P-value)
Species
Oreochromis niloticus
225
113 (50.22)
324(61.95%)
103.686 (0.000)
Clarias gariepinus
72
66 (91.7)
172(32.9%)
Cyprinus carpio
115
18 (15.6 )
27 (5.15 %)
Total
412
197 (47.8)
523 (100 %)
Sex
Female
178
86 (48.31)
350(66.92%)
0.031 (0.860)
Male
234
111 (47.44)
173(33.08%)
Total
412
197 (47.8)
523 (100%)
Length
8 – 12 cm
127
66 (51.97)
194 (37.1%)
38.546 (0.000)
13 – 17 cm
96
45 (46.9)
121(23.13%)
18 – 24 cm
43
2 (4.6)
9 (1.73 %)
≥ 25 cm
146
84 (57.53)
199 (38.04%)
Total
412
197 (47.8)
523 (100 %)
Weight (age)
70 – 100 gm (fingerlings)
194
88 (45.36)
240 (45.9%)
11.434 (0.010)
110 – 200 gm (juvenile)
72
43 (59.72)
125 (23.9%)
210 – 300 gm (young)
61
20 (32.78)
54 (10.3%)
≥ 300 gm (adult)
85
46 (54.11)
104 (19.9%)
Total
412
197 (47.8)
523 (100 %)
Table 1:
Prevalence of internal parasitic helminthes in relation to species, sex, length and weight (ages) of fish in Lake Lugo (Hayke).
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