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Table 3
Levin's index of diet breadth (Ba), Levin's standardised niche breadth (BA) and trophic level estimated for four examined species inhabiting Cochin Estuary [a reference scale for niche breadth: 0–0.39 low, 0.4–0.6 intermediate, 0.61–1.0 high (modified from Grossman, 1986).]
| Species | N | Ba | BA | Trophic level |
|---|---|---|---|---|
| Mugil cephalus | 73 | 5.69 | 0.58 | 2.5 ± 0.27 |
| Planiliza parsia | 35 | 5.75 | 0.52 | 2.7 ± 0.50 |
| Planiliza planiceps | 65 | 7.22 | 0.77 | 2.4 ± 0.30 |
| Chanos chanos | 55 | 7.5 | 0.72 | 2.6 ± 0.35 |
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