Stage | Time | C (%) | N (%) | Energy (J/mg) | C/N |
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Eggs | Beginning | 56.46 ± 3.35 | 9.71 ± 0.59 | 24.58 ± 2.29 | | 5.82 ± 0.13 |
End | 54.09 ± 1.26 | 9.71 ± 0.21 | 22.97 ± 0.81 | | 5.57 ± 0.16 |
Larvae | Beginning | 36.69 ± 3.26 | 8.01 ± 0.74 | 12.94 ± 1.66 | MC | 4.41 ± 0.16 |
SA | 4.7 ± 0.17 |
End | 34.11 ± 3.12 | 8.03 ± 0.82 | 11.66 ± 1.52 | MC | 4.22 ± 0.08 |
SA | 4.27 ± 0.22 |
- Proportion of carbon and nitrogen, energy/dry mass, and C/N ratio (±SD) of eggs and larvae, measured at the beginning and at the end of the reproductive season. Data from beginning pooled from seasons 2002–2003 and 2003–2004; data from Mar Chiquita (MC) and San Antonio (SA) pooled, except C/N of larvae (because differences between populations were significant)