Pachygrapsus Minutus – Pachygrapsus minutus

, Pachygrapsus Minutus - Pachygrapsus minutus, Pachygrapsus minutus
Depth: 0 - 6 m

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The Pachygrapsus minutus, commonly known as the “Pachygrapsus Minutus,” is a species of crab belonging to the family Grapsidae. This crab is a fascinating example of the diverse life found in marine ecosystems, particularly in the intertidal zone.

Description & Characteristics

The Pachygrapsus minutus is a small crab, reaching a maximum size of about 2.5 centimeters in width. Its carapace, the hard upper shell covering the body, is typically a mottled brown color with a smooth surface. This coloration helps the crab blend in with its rocky surroundings, providing camouflage from predators.

Habitat and Occurrence

Pachygrapsus minutus is a true intertidal crab, meaning it lives in the intertidal zone between the high and low tide lines. This zone is characterized by the alternating cycles of submersion and exposure to air, presenting unique challenges for marine life. The crab’s habitat is typically found on rocky shores and rock coasts, where it can find shelter among crevices and under boulders. They are also known to inhabit rocky, hard seabeds. Their presence is confined to seawater, or more specifically, sea water.

Taxonomy

The species Pachygrapsus minutus belongs to the Class: Malacostraca, Order: Decapoda, and Family: Grapsidae. This classification places the crab within a large and diverse group of crustaceans with ten legs, known as decapods, which includes many familiar creatures like lobsters, shrimp, and crayfish.

Distribution and Occurrence

The Pachygrapsus minutus is widely distributed throughout the intertidal zone, making it a prevalent presence in these aquatic ecosystems. Its presence is primarily concentrated in the Intertidal (Eulittoral), intertidal zone between the high and low tide lines characterized by the alternation of low and high tides. This adaptation allows the crab to thrive in the constantly changing environment of the intertidal zone.

Feeding

Pachygrapsus minutus is an omnivore, feeding on a variety of food sources. Its diet includes algae, carrion, clams, crustaceans, detritus, sea cucumbers, snails, sponges, starfish, and worms. This adaptability allows the crab to take advantage of whatever food is available in its environment.

Associated Species

Image References

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