Table 3.
Spatial variation of benthic macroinvertebrate abundance of Lagos Lagoon.
| Class | Family | Taxon | Site I | Site II | Site III | Site IV |
|---|---|---|---|---|---|---|
| Polychaeta | Nereididae | Nereis sp. | 31 | 5 | 23 | 30 |
| Capitellidae | Capitella sp | 12 | 20 | 18 | 12 | |
| Spionidae | Polydora ciliata | 13 | 0 | 0 | 13 | |
| Ophelininae | Polypthalmus pitcus | 10 | 7 | 4 | 2 | |
| Nephytyidae | Nephtys sp. | 12 | 22 | 0 | 3 | |
| Hirudinidae | Hirudinaria granulosa | 3 | 22 | 2 | 6 | |
| Amphinomidae | Pherecardia striata | 6 | 2 | 11 | 9 | |
| Clitellata | Lumbriculidae | Lumbriculus variegatus | 9 | 12 | 2 | 20 |
| Gastropoda | Potamididae | Tympanotonus spp | 11 | 10 | 12 | 1 |
| Potamididae | Tympanotamus fuscatus | 6 | 15 | 7 | 1 | |
| Thiaridae | Pachymelania aurita | 0 | 25 | 10 | 5 | |
| Neritidae | Neritina glabrata | 24 | 0 | 21 | 10 | |
| Neritina senegalensis | 20 | 0 | 4 | 10 | ||
| Turritellidae | Turritella ungulina | 7 | 10 | 3 | 15 | |
| Donacidae | Iphigenia truncate | 2 | 5 | 3 | 3 | |
| Planorbidae | Bulinus truncatus | 2 | 4 | 8 | 1 | |
| Bulinus nyassanus | 2 | 3 | 8 | 3 | ||
| Physidae | Physa fontinalis | 4 | 8 | 11 | 20 | |
| Physinae | Physella sp. | 10 | 9 | 2 | 5 | |
| Bivalvia | Arcidae | Andara sp. | 12 | 8 | 8 | 12 |
| Mytilidae | Mytilus edulis | 9 | 10 | 4 | 19 | |
| Thecostraca | Balanidae | Fistubalanus pallidus | 31 | 8 | 18 | 15 |
| Insecta | Chronomidae | Chironomus sp. | 5 | 15 | 8 | 0 |
| Malacostraca | Aoridae | Aora gracilis | 3 | 6 | 7 | 11 |
| Penaeidae | Penaeus notialis | 2 | 0 | 1 | 25 | |
| Diogenidae | Clibanarius africanus | 10 | 0 | 0 | 1 |