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

Table 3 Chasmagnathus granulatus

Variable	Factor	df effect	MS effect	df error	MS error	F	P-level
C content (μg per individual)	Population	1	37.76	52	0.087	429.43	<0.0001*
	Time	1	14.4	52	0.087	163.75	<0.0001*
	Population × time	1	1.5	52	0.087	17.1	0.00013*
N content (μg per individual)	Population	1	1.185	52	0.023	504.57	<0.0001*
	Time	1	0.296	52	0.023	126.14	<0.0001*
	Population × time	1	0.037	52	0.023	15.83	0.0021*
Energy content (J per individual)	Population	1	0.071	52	0.00021	331.91	<0.0001*
	Time	1	0.032	52	0.00021	150.33	<0.0001*
	Population × time	1	0.003	52	0.00021	15.98	0.0002*

Two-way ANOVA evaluating differences in carbon (C), nitrogen (N), and energy content of eggs between populations (Mar Chiquita, San Antonio) and times of season (beginning versus end of the reproductive season); interaction between these factors
*Significant values of P (α = 0.05)

ISSN: 1438-3888