الفهرس 
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Abstract
Seafood borne diseases associated with consumption of shellfish are the majorchallenge to the food hygienists in the 21st century, especially in the costal cites-Egypt. Therefore 80 samples of each of 20 molluscus Lammellibranch spp ―Tapes decussates ― ( Gandoffli ) , 20 fresh cuttlefish ― Sepia pharaonis ― , 20 frozen cuttlefish ― Sepia pharaonis ― and 20 gastropod ―Thais Lacera― (Logz)were randomly collected from Ismailia markets and Beaches to be examined forbacteriological quality. The study revealed that logz had the highestpsychotropic count with mean 5.3 log10CFU/g. Staphylococcus aureus,Salmonella species and Vibrio species were detected in 66 (82.5%), 26 (32.5%)and 52(65%) of the molluscus respectively. Total coliform count was highest in fresh sobia with mean 32.8 MPN/g. while the highest count of total aerobicbacteria was in sobia with mean 5.75 log10CFU/g. These bacterial contaminations could be attributed to excessive unsanitary handling and improper storage measures. The achieved results declared that strict hygienic measures and proper storage time/ temperature practices are necessary to prolong molluscus shelflife and to protect the consumers from the hazards of fish-borne pathogens.