Sources of variation d.f MSS
SL SW SD SOLT BWL OL OW AAW
Between genetic group 2 20.535* 16.555** 0.207NS 26.214** 34.498** 9.023** 2.357** 12168.37NS
Error 297 4.77 1.453 0.437 0.14 1.229 0.503 0.128 13482.52
d.f: Degrees of freedom; MSS: Mean sum of square; SL: Shell length; SW: Shell width; SD: Shell depth; SOLT: Shell outer lip thickness; BWL: Body whorl length; OL: Operculum length; OW: Operculum width; AAW: Adult animal weight. **P<0.01; *P<0.05; NS: Not significant.
Table 3: ANOVA showing the effect of genetic group on various morphometric traits.