الملخص العربى
INTRODUCTION
MATERIAL AND METHODS
EFFECT OF TEMPERATURE
EFFECT OF THE FLUCTUATING LARORATORY TEMPERATURE ON THE MONTHLY GAMETOGENESIS AND EGG PRODUCTION OF MATURE B.a!" ~ "" ~ "andkina SNAILS THROUGHOUT A YEAR
EFFECT OF CONSTANT TEMPERATURES ON GROWTH, REPRODUCTION AND SURVIVORSHIP OF Ralexandeina SNAILS
EFFECT OF LIGHT ON GROWTH, REPRODUCTION AND SURVIVORSHIP Of 8.ALEXANORINA SNAILS
Procedure
Results and Discussion
Effect of Competition
THE INTERSPECIFIC COMPETITION BETWEEN HELlS0UA UURYI AND 810UPHALARIA ALEXANURINA
Procedure
The reproductive capacity
IKTRASPECIFI C COot PETITION BETWEEN 8 .ALEXANDRIAN SNALTS
Effect of Food Type
STUDIES ON THE EFFECT OF VARIOUS FOOD TYPES ON THE CROWTH, REPR01)UCTIVE AND SURVIVAL RATES OF 8IOHPHAlARIA AlEXANDRINA
Procedure
Discussion
Effect of Stavation
THF EFFFC’T OF " ~ "TARVATION ON THE GRrI1’WfH, RFIHmntlCTION AND SURVIVAL RATE OF Biomphalania alexandrian Snatls
Procedure
Results
Discussion
EFFECTS OF SC" ~ "ISTOSOMA MANSONI INFECTION ON THE SURVIVAL, REPRODUCTION AND REPRODUCTIVE ORGANS OF BIOMPHALARIA ALEXANDRINA SNATLS
Procedure
Results
Discussion
SUMMARY
REFERENCES
الفهرس 
