Charybdis (Charybdis) granulata is a species of crab belonging to the family Portunidae, commonly known as swimming crabs. It is characterized by its distinctive features and plays a significant role in marine ecosystems.
Description & Characteristics
Charybdis (Charybdis) granulata exhibits a range of characteristics that set it apart from other crab species. Its carapace, the hard outer shell covering its body, is typically a reddish-brown color. The carapace can reach a maximum size of approximately 10 centimeters in width, making it a relatively medium-sized crab. The most notable feature of Charybdis (Charybdis) granulata is its granular texture, which gives it its specific name. Its legs are also covered in granules and are equipped with sharp spines, providing protection and aiding in its ability to swim. These swimming capabilities are further enhanced by the flattened shape of its body and its paddle-like fifth pair of legs, enabling it to move efficiently through the water.
Habitat and Occurrence
Charybdis (Charybdis) granulata is primarily found in coastal waters and estuaries, often dwelling on sandy or muddy bottoms. Its distribution spans across various marine zones, including the intertidal and subtidal regions. This species is known to occur in the Indo-Pacific region, with a preference for areas with relatively warm water temperatures. Due to its adaptability and abundance, it is considered a prevalent presence in these aquatic ecosystems.
Taxonomy
Charybdis (Charybdis) granulata belongs to the Class: Malacostraca, Order: Decapoda, and Family: Portunidae. This classification places it within the larger group of crustaceans, which are characterized by their hard exoskeletons and segmented bodies. The order Decapoda encompasses crabs, lobsters, and shrimps, all of which share the common trait of having ten legs. The family Portunidae, to which Charybdis (Charybdis) granulata belongs, is known for its swimming crabs, distinguished by their flattened bodies and paddle-like legs.
Feeding
Charybdis (Charybdis) granulata is an opportunistic omnivore, meaning it feeds on a wide variety of food sources. Its diet includes both plant and animal matter, ranging from algae and detritus to small fish, mollusks, and crustaceans. Its feeding habits contribute to the overall balance of the ecosystem, as it helps regulate the populations of other species within its habitat.
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