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Table 4 Chasmagnathus granulatus

From: Seasonal and interpopulational variability in fecundity, egg size, and elemental composition (CHN) of eggs and larvae in a grapsoid crab, Chasmagnathus granulatus

Stage

Time

C (%)

N (%)

Energy (J/mg)

C/N

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

  1. 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)