Plicatula plicata, commonly known as the “Plicatula”, is a species of saltwater clam that belongs to the family Plicatulidae. This bivalve mollusk is known for its distinctive, intricately folded shell, which gives it a unique appearance.
Description & Characteristics
The Plicatula is a small to medium-sized clam, reaching a maximum size of about 5 centimeters. Its shell is characterized by its highly convoluted, pleated surface. These folds are typically radiating from the umbo, which is the hinge area of the shell. The shell can be various colors, ranging from white to brown, often with a purplish hue. The interior of the shell is generally pearly white.
Habitat and Occurrence
Plicatula plicata is found in a variety of marine habitats, primarily in shallow coastal waters. It is commonly found attached to rocks, algae, and other hard substrates. The Plicatula’s habitat often includes the intertidal zone, as well as subtidal areas down to depths of 100 meters. It is particularly prevalent in the neritic zone, which is the region of the ocean extending from the shoreline to the edge of the continental shelf. This distribution makes Plicatula plicata a common sight in many coastal ecosystems.
Taxonomy
Plicatula plicata belongs to the Class Bivalvia, which includes a wide variety of mollusks with two hinged shells. It is further classified within the Order Pectinida, a group that encompasses scallops, oysters, and related bivalves. Within this order, the Plicatula is a member of the Family Plicatulidae, a group of bivalves known for their distinctive folded shells.
Feeding
Plicatula plicata is a filter feeder, like many other bivalves. It obtains its sustenance by drawing water into its mantle cavity, where microscopic food particles are trapped by its gills. These particles, such as phytoplankton and other organic matter, are then transported to the mouth and ingested. This feeding strategy allows the Plicatula to play a significant role in the marine food web and contribute to the overall health of its ecosystem.
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