Adula californiensis is a species of marine bivalve mollusc belonging to the family Mytilidae. This species is commonly known as the California mussel and is found in the intertidal zone of the Pacific coast of North America.
Description & Characteristics
Adula californiensis is a small to medium-sized mussel, typically reaching a maximum length of 50 millimeters. The shell of this species is elongated and oval in shape, with a slightly pointed anterior end. Its color is typically dark brown or black, with a smooth, glossy surface. The inner surface of the shell is pearly white. Like most mussels, Adula californiensis possesses two adductor muscles that control the opening and closing of its shell.
Habitat and Occurrence
Adula californiensis is a common inhabitant of the intertidal zone, primarily residing in rocky shores and areas with abundant seaweed. They are found from the low intertidal zone to depths of up to 15 meters. This species is well-adapted to the harsh conditions of the intertidal zone, tolerating fluctuations in salinity, temperature, and exposure to air. They are particularly abundant in the subtidal marine zone, a region of the ocean where they are mostly submerged.
Taxonomy
Adula californiensis is classified within the Class Bivalvia, Order Mytilida, and Family Mytilidae. This family encompasses a wide range of mussels, including the well-known blue mussel (Mytilus edulis). The classification reflects the evolutionary relationships among these diverse bivalve species.
Feeding
Adula californiensis, like other mussels, is a filter feeder. It obtains its food by filtering water through its gills and capturing microscopic algae and other organic particles. This feeding strategy is essential for the mussel’s survival in its marine environment.
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