Table 4.

Summary statistics from analysis of best-subset regression comparing each attributes of the life-history traits of Pomacea canaliculata to macrophyte characteristics.

Snail Life-History Trait	Constant	Nutrients		Defensive Traits				Adj. R2
		N	P	Phenolics	Cellulose	Lignin	Toughness
Feeding rate	0.359		0.364	−0.081	−0.008			0.78
SH-growth	0.080		0.018		−0.002		−0.001	0.84
DM-growth	2.268		0.520		−0.006		−0.012	0.76
No. of clutches per female	4.870	0.127		−0.211	−0.181			0.41
Clutch size	71.429	66.814		−12.914	−1.664			0.60
Egg hatching success	67.449			−11.821	−2.410			0.23

No macrophyte characteristic selected as predictor in the regression model of DM-egg and DM-neonate.