Figure 1

Effect of luteectomy on the progesterone plasma concentration in viviparous lizard Barisia imbricate. Patterns of progesterone plasma concentrations in luteectomised, sham luteectomised and intact pregnant females of the viviparous lizard Barisia imbricata imbricata. BS: before surgery, W-AS: weeks after surgery, I-PP: immediately post-parturition ^ais significantly higher with respect to remaining times of gestation of luteectomised lizards group at p < 0.01; ^gis significantly higher with respect to remaining times of gestation of sham luteectomised lizards group at p < 0.01; ^kis significantly higher with respect to remaining times of gestation of intact lizard group at p < 0.01; ^bis significantly less with respect to ^fand ^jat p < 0.01; ^cis significantly less with respect to ^gand ^kat p < 0.01; ^dis significantly less with respect to ^lat p < 0.01.