Ecobiological studies on two land snail species at Sharkia governorate

الملخص EN

The present experiment was aimed to through light on some environmental parameters on two land snails, the glassy clover snail Monacha cartusiana (Müller) (Gastropoda: Hygromiidae) and the amber snail Succinea putris L.

(Gastropoda: Succineidae).

The laboratory experiments showed that daily food consumption of different shell height of S.

putris snail arranged as follow: 13.20 mg by snails with shell height (8-10mm) < 13.33mg (6-8mm) < 15.34 mg (12-14mm) < 15.45mg (10-12mm) < 16.35mg (14- 16mm).

The favorite places of aestivation in four different directions site for M.

cartusiana during year were: Western (231.8) snail > Southern (197.5) > Northern (134) > Eastern (131.8).

While, the favorite places of rest for S.

putris could be arranged as follows: South (207) snails > East (152.2) > North (136.2) > West (100.9) and it was not entered in aestivation.

On the other hand, the size frequency of S.

putris snails with shell height of 5-6, 7-8 and 9-10 mm and with shell width 3-4 and 4-5 mm were detected during all months from January to August 2016, while the size frequency of M.

cartusiana snails with shell height 6-7 and 7-8 mm and with shell width 11-12 and 13-14mm were observed during February to August 2016.