Comparative biology of the crab Goniopsis cruentata: geographic variation of body size, sexual maturity, and allometric growth

Table 2 Mean values (±SD) of abiotic factors for the period of study in Alagoas and Ceará States, Northeast Coast of Brazil

	Alagoas	Ceará	t test	p
Minimum temperature (°C)	21.95 ± 0.43	22.77 ± 0.89	t ₍₂₀₎ = −2.75	0.006*
Maximum temperature (°C)	30.65 ± 1.08	32.54 ± 1.55	t ₍₂₀₎ = −3.31	0.002*
Mean temperature (°C)	25.82 ± 0.87	27.01 ± 0.65	t ₍₂₀₎ = −3.62	<0.01*
Rainfall (mm³)	217.7 ± 230.6	103.0 ± 117.5	t ₍₂₁₎ = 1.48	0.07
Actual evapotranspiration (mm)	80.43 ± 48.6	83.22 ± 63.32	t ₍₂₀₎ = −0.11	0.45
Potential evapotranspiration (mm)	115.89 ± 39.6	141.97 ± 6.20	t ₍₂₀₎ = −2.16	0.021*
Relative humidity (%)	78.88 ± 4.88	74.82 ± 8.05	t ₍₂₀₎ = 1.43	0.084

Data refer to the mean annual values of each environmental parameter
t value is presented along with its degrees of freedom (DOFs) between parentheses
* Indicates significant values (p < 0.05)

ISSN: 1438-3888