Barbatia setigera is a species of marine bivalve mollusk belonging to the family Arcidae. It is commonly known as the setose ark clam. This species, like other members of the Arcidae family, plays a crucial role in marine ecosystems, contributing to biodiversity and nutrient cycling.
Description & Characteristics
Barbatia setigera is a medium-sized bivalve, typically reaching a maximum length of around 50 millimeters. Its shell, characteristic of the Arcidae family, is strong and robust, exhibiting a distinctly ovate shape. The surface of the shell displays a unique feature – it is covered with numerous, hair-like setae, giving the clam its common name. These setae, or bristles, are a remarkable adaptation that aid in camouflage and defense. The color of the Barbatia setigera shell varies, ranging from light brown to reddish-brown, often with intricate patterns and markings. Its interior, or the inside of the shell, is typically white or cream-colored.
Habitat and Occurrence
Barbatia setigera prefers a benthic lifestyle, inhabiting the seafloor. Its distribution is primarily limited to the western Atlantic Ocean. It is commonly found in the intertidal zone, which is the area between the high and low tide marks, and extends its range to the subtidal zone, which remains submerged even at low tide. This wide depth range, encompassing both shallow and deeper waters, underscores the adaptability of this species. In terms of marine zones, Barbatia setigera thrives within the neritic zone, the coastal area of the ocean extending from the shoreline to the edge of the continental shelf.
Taxonomy
Barbatia setigera belongs to the Class: Bivalvia, Order: Arcida, and Family: Arcidae. Bivalves, a diverse group of mollusks, are characterized by their two-part shell that protects their soft bodies. Within the Bivalvia, the Order Arcida encompasses a group of bivalves known for their thick, heavy shells, often with a prominent hinge structure. The Arcidae family, which includes Barbatia setigera, is known for its diverse array of species, many of which exhibit unique adaptations and play a crucial role in marine ecosystems.
Feeding
Barbatia setigera is a filter feeder, meaning it obtains its food by filtering organic matter from the surrounding water. This feeding strategy makes them essential components of marine ecosystems, as they contribute to the cycling of nutrients and the removal of suspended particles. The Barbatia setigera, like other bivalves, uses its gills to filter food particles from the water column, actively contributing to the health and balance of their habitat.
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