Study on Freshwater Macroinvertebrates of Some Tanzanian Rivers as a Basis for Developing Biomonitoring Index for Assessing Pollution in Tropical African Regions
Table 2
Macroinvertebrate families recorded at each site of the five studied rivers.
Order
Family
K1
K2
K3
R1
R2
R3
L1
L2
L3
S1
S2
S3
U1
U2
U3
Total
Arhynchobdellida
Hirudinidae
1
0
0
4
0
0
1
1
8
3
2
0
0
0
0
20
Coleoptera
Dytiscidae
0
15
7
3
17
13
14
0
21
7
5
12
6
1
3
124
Dryopidae
0
0
2
19
7
11
38
29
17
3
10
7
16
17
87
263
Gyrinidae
0
16
4
16
18
3
10
0
32
0
3
2
13
8
13
138
Haliplidae
3
0
0
9
0
0
4
4
5
10
3
0
0
0
0
38
Hydrophilidae
2
2
3
2
11
1
2
2
14
0
2
3
9
2
9
64
Decapoda
Potamonautidae
18
27
41
8
2
20
1
6
3
2
2
11
4
17
6
168
Diptera
Athericidae
34
73
123
21
64
81
3
4
11
11
34
26
1
43
19
548
Ceratopogonidae
58
22
56
5
25
14
4
5
14
4
10
27
11
17
10
282
Chironomidae
294
456
607
63
368
369
1
6
45
29
56
49
13
37
195
2588
Muscidae
21
47
56
15
28
32
2
27
14
16
18
34
24
12
6
352
Simuliidae
54
275
647
67
261
296
10
68
17
35
31
29
14
28
123
1955
Tabanidae
42
53
106
20
37
64
3
15
6
16
32
38
20
16
11
479
Tipulidae
45
30
85
4
18
24
16
15
13
29
27
66
27
34
16
449
Ephemeroptera
Baetidae
31
16
9
284
7
18
480
337
31
353
279
37
13
1
2
1898
Caenidae
7
4
1
94
9
7
104
94
11
42
27
16
11
1
0
428
Dicercormyzidae
14
0
0
9
0
0
54
28
11
9
16
0
0
0
0
141
Ephemerythidae
2
0
0
16
0
0
2
4
7
4
2
0
0
0
0
37
Heptageniidae
6
0
0
3
0
0
5
2
5
6
2
0
0
0
0
29
Leptophlebiidae
8
0
0
2
0
0
11
6
2
3
7
0
0
0
0
39
Oligoneuriidae
7
0
0
10
0
0
16
8
2
5
1
0
0
0
0
49
Polymitarcyidae
2
0
0
4
0
0
12
8
2
1
3
1
3
0
0
36
Gastropoda
Lymnaeidae
0
3
0
1
0
1
3
0
1
0
0
0
1
0
0
10
Planorbidae
1
0
2
0
0
0
1
1
0
1
0
0
2
0
0
8
Thiaridae
1
0
0
1
0
0
1
1
0
0
0
0
1
0
0
5
Hemiptera
Corixidae
5
18
11
7
23
22
17
7
45
6
54
31
23
17
9
295
Gerridae
1
0
3
0
4
12
2
6
18
2
13
7
10
3
7
88
Naucoridae
1
6
0
23
0
0
28
0
37
2
0
0
35
1
10
143
Notonectidae
3
21
3
0
14
8
13
8
51
23
41
20
10
6
4
225
Veliidae
1
3
10
4
1
4
7
2
14
5
2
9
5
2
0
69
Hydroida
Hydridae
0
0
0
1
0
0
1
1
1
1
0
0
0
0
0
5
Odonata
Aeshnidae
0
6
1
6
2
4
1
6
4
1
4
1
0
1
4
41
Calopterygidae
1
1
1
1
3
0
0
0
2
1
1
1
1
1
0
14
Chlorocyphidae
1
0
0
3
1
1
0
0
1
1
0
0
0
1
1
10
Coenagrionidae
2
24
3
4
1
3
0
8
3
6
4
1
2
1
3
65
Corduliidae
2
1
0
1
3
4
1
1
6
2
2
2
5
9
13
52
Gomphidae
0
4
2
2
3
1
0
6
5
0
5
3
0
1
1
33
Libellulidae
0
2
17
5
5
7
0
5
8
4
7
1
1
1
0
63
Macromiidae
0
15
14
2
0
2
0
9
15
0
3
3
0
6
8
77
Plecoptera
Perlidae
8
0
0
11
0
0
4
6
15
0
12
21
1
0
0
78
Tubificida
Naididae
67
117
211
68
92
129
0
1
2
0
15
19
3
18
46
788
Tricladida (Turbellaria)
Planariidae
1
0
0
0
0
0
19
2
1
1
2
0
1
0
0
27
Trichoptera
Ecnomidae
0
1
0
5
1
0
14
13
1
19
12
1
1
1
0
69
Hydropsychidae
0
0
1
11
1
0
7
7
1
13
4
0
3
0
0
48
Lepidostomatidae
1
0
0
9
0
1
5
4
0
4
5
0
1
2
1
33
Leptoceridae
2
0
0
1
0
0
13
6
1
14
9
1
0
0
0
47
Philopotamidae
1
0
0
3
0
0
23
16
0
10
21
0
0
0
0
74
Phryganeidae
3
0
0
8
0
0
7
4
2
5
2
3
1
0
0
35
Total
751
1258
2026
855
1026
1152
960
789
525
709
790
482
292
305
607
12527
Key: K1 = Karanga site @ Kibo Match Industry Ltd.; K2 = Karanga site @ Shirimatunda; K3 = Karanga site @ Bonite Bottlers Factory Ltd.; R1 = Rau site @ Mawela; R2 = Rau site @ Majengo; R3 = Rau site @ Msaranga; L1 = Lumbanga site @ Mweka; L2 = Lumbanga site @ Singachini; L3 = Lumbanga site @ Kirima; S1 = Sere site @ Kombo; S2 = Sere site @ Narumu; S3 = Sere site @ Weruweru; U1 = Umbwe upstream site; U2 = Umbwe site @ Kwa-Rafael; U3 = Umbwe site @ Kindi.
