he food-dependent changes in the population growth and fecundity of land snails are the primary indicators of their adaptation to environmental changes. Starvation-based changes in the growth and fecundity of the land-snail Succinea daucina (Pfeiffer,1855) (Gastropoda: Succineidae) substantiated this proposition. In experimental conditions, laboratory-reared and newly hatched snails were provided food regularly (control) and at a gap of 1 to 6 days per week (treatment). The increment of shell length and biomass were used as the indicators of individual growth, while the oviposition rate was considered an indicator of fecundity.  A compliance with the von Bertalanffy growth equation (L_t = L_∞(1 – e^{-k(t – t0)}) was observed for the increment of shell length in all instances, but the magnitude of b (regression coefficients), L_maximum and L_∞ (maximum and asymptotic length) decreased with increasing growth rate, as the starvation period extended. A special emphasis on b was given to predict a change in the shape of snails with starvation. Similar observations were made for fecundity, where the oviposition rate was higher in the snails that had regular food availability. As the starvation duration extended, population growth and fecundity showed a negative correspondence.  Such variations in growth and fecundity reflect the specie’s adaptation to cope with the environmental odds.