Results and discussion
A total of 2160 clams (shell length P 17 mm) were examined
from the three sites that were investigated in the present study.
Clams average shell lengths used in the present study were
31.6 ± 4.3 mm (min 18.4–max 51.5 mm) in El-Max, Alexandria
(Table 1); 28.2 ± 4.1 mm (min 17–max 51 mm) in Timsah
Lake, Ismailia (Table 2); and 35.6 ± 2.6 mm (min 20.8–max
49.2 mm) in Ezbet El-Borg, Damietta (Table 3).