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Table 3 Macroinvertebrate composition, distribution, and community structure in Opa Reservoir’s tributaries (September 2004–July 2005)

From: Biological assessment of the headwater rivers of Opa Reservoir, Ile-Ife, Nigeria, using ecological methods

S/NTaxonObudu RiverOpa RiverEsinmirin River
 Crustacea
1Sudanonautes africanus11310689
 Insecta
2Elassoneuria sp.123186
3Aciagrion hamoni0180
4Lestinogomphus sp.1483630
5Urothermis assignata1184488
6Acisoma panorpoides1595918
7 Diptera 1600
8 Diptera 2600
9Chironomus sp.6058
10Eristalis sp.606
 Gastropoda
11Lanistes libycus902436
12Potadoma moerchi18180
13Potadoma freethi1283889
14Melanoides tuberculata14248439
15Bulinus globosus0093
16Tagelus plebeius01212
 Annelida
17Tubifex sp.4700
Taxa richness141112
Abundance9944661764
Margalef diversity index1.8841.6281.472
Shannon-Wiener index2.2252.1851.527
Pielou’s evenness index0.6610.8080.384