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A Comparative Study of the Density of Patella Vulgata (Common Limpets) in the Optimum Niche on an Exposed and Sheltered Rocky Shore.
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A Comparative Study of the Density of Patella Vulgata (Common Limpets) in the Optimum Niche on an Exposed and Sheltered Rocky Shore Planning: - Aim: - To find out if there is a difference in limpet density on shores receiving different wave action. Introduction: - Patella vulgata (common limpet) is a dome shaped mollusc with no spiralling of the shell. It has a strong muscular foot and secretes a chemical to adhere to the rocks. As it clamps down and settles onto a particular rock, it rotates, and upon death, leaves a scar on the rock. This is called the home scar rock, to which the limpet must return after feeding or it will die. This is because the limpet will only form a vacuum against that particular rock. Figure 1. Patella Vulgata situated on rocks Figure 2. A limpet's foot and mantle They feed mainly at high tide and at night. Sometimes they...
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