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

Table 8 Chasmagnathus granulatus larvae

Variable	Factor	MS factor	MS error	F-value	P
%C	Population	3.86	9.35	0.41	0.52
	Time	47.58	9.35	5.08	0.03*
	Population × time	12.74	9.35	1.36	0.25
%N	Population	0.20	0.58	0.35	0.55
	Time	0.013	0.58	0.022	0.88
	Population × time	0.019	0.58	0.032	0.85
Energy per dry weight	Population	0.89	2.33	0.38	0.53
	Time	11.68	2.33	5.01	0.03*
	Population × time	3.19	2.33	1.37	0.24
C/N	Population	0.26	0.03	8.18	0.007*
	Time	0.85	0.03	26.68	<0.0001*
	Population × time	0.13	0.03	4.20	0.048*

Two-way ANOVA evaluating differences between populations (Mar Chiquita and San Antonio) and times of season (beginning and end of reproductive season) in the proportion of carbon (%C), nitrogen (%N), energy per dry mass (J/mg), and C/N ratio. In all cases df factor = 1, df error = 34
*Significant values of P (α = 0.05)

ISSN: 1438-3888