Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae)

Table 4

Reduced major axis (RMA) regressions of male body length on female body length under the null hypothesis of 𝛽=1.0 in Dichroplus pratensis and D. vittatus. r: pearson’s correlation coefficient; T: student’s t-statistic; df: degrees of freedom; P : probability; β: slope of RMA regression; 𝑆_𝜉: standard deviation; T: Clarke’s T-statistic; CI: confidence interval; a: RMA regression intercept.

		Correlation coefficient				RMA slope					RMA intercept
SPECIES	TRAIT	r	t	df	P	β (S ξ)	T	df	P	95% CI	a (Sξ)	95% CI
D. pratensis	BL	0.79	5.12	23	<0.001	1.328 (0.171)	2.60	20.33	0.009	0.975, 1.681	−0.493 (0.239)	−0.988, 0.002
D. vittatus	BL	0.83	6.15	17	<0.001	0.767 (0.104)	2.40	15.38	0.015	0.549, 0.986	0.221 (0.143)	−0.080, 0.522