Characteristics of the first and five first egg clusters laid by experimentally-maintained <i>Lymnaea schirazensis</i> specimens of four populations from different geographical origins, followed up from the day of their individual isolation immediately after hatching.

Cluster measurement range include minimum and maximum extremes, with mean±standard deviation SD in parentheses. Measurements in mm (area in mm2). n = number of specimens measured; * Days elapsed from day of hatching to day when first cluster was laid; ** Length of snail in the day it laid the first cluster.