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Zebea Porcata Research Paper

155 Words1 Pages
The austrocochlea porcata, or zebra top snail, named so because of its black and white striped shell. This species, although extremely common, have no two individuals that are exact identicals. The reason for this is because their stripes depend on their diet. At certain times during the year the algae they eat contains a substance that the snail excretes into its shell to form the darkned bands on the shell. It is said that the number of bands can indicate the age of this species but it has been disproved by Creese & Underwood (1976). This was investigated and the amount of dark banding in the shell is proportional to the amount of chlorophyll present in the food supply. The zebra top snail is spread from Townsville down and around

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