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Table 1
Mean values and standard errors (SE) for O. cyanea derived from visual strip transects (density estimates) and commercial catch sampling (mantle length and body weight) carried out around Agatti and Kavaratti islands (Arabian Sea) during three survey periods; CV coefficient of variation; N number of individuals.
| Island | Survey period | Density (ind per ha) | Mantle length (cm) | Weight (g) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SE | CV | N | Mean | SE | N | Mean | SE | N | ||
| Agatti | Overall | 3.0 | 0.5 | 0.16 | 136 | 11.53 | 0.18 | 216 | 923 | 39.62 | 216 |
| 2008/09 | 3.1 | 0.8 | 0.26 | 53 | 10.08 | 0.2 | 106 | 644 | 34.58 | 106 | |
| 2009/10 | 2.4 | 0.6 | 0.26 | 21 | 11.00 | 0.44 | 21 | 934 | 102.55 | 21 | |
| 2011/12 | 3.6 | 0.7 | 0.2 | 62 | 13.38 | 0.23 | 89 | 1253 | 68.92 | 89 | |
| Kavaratti | Overall | 2.5 | 0.5 | 0.21 | 62 | 10.16 | 0.24 | 143 | 846 | 61.01 | 143 |
| 2008/09 | 4.2 | 0.9 | 0.21 | 39 | 9.92 | 0.26 | 119 | 680 | 48.19 | 119 | |
| 2009/10 | 1.8 | 0.4 | 0.21 | 17 | 10.75 | 0.69 | 20 | 1685 | 236.2 | 20 | |
| 2011/12 | 1.3 | 0.3 | 0.21 | 6 | 14.5 | 0.65 | 4 | 1588 | 430.3 | 4 | |
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