Helice
Helice is a genus of crabs in the family Grapsidae. They are commonly known as “shore crabs” or “mangrove crabs,” reflecting their typical habitat. These crabs are characterized by their broad, flattened bodies, which are adapted for life in intertidal zones and mangrove forests. They are known for their distinctive “walking” gait, using their four pairs of legs to move laterally across the substrate. Helice crabs play a crucial role in their ecosystems, serving as both predators and prey, and contributing to nutrient cycling.
Common Names
Common names for crabs in the genus Helice include:
- Shore crabs
- Mangrove crabs
- Mud crabs (in some regions)
Characteristics
Helice crabs exhibit several key features:
- Broad, flattened body: This shape helps them move easily in shallow water and on mudflats.
- Small, short claws: Unlike many other crab species, Helice crabs have relatively small claws, which are primarily used for feeding rather than fighting.
- Lateral walking gait: They move sideways, using their four pairs of legs to propel themselves across the substrate.
- Varied coloration: Helice species can display a range of colors, from brown and gray to reddish and greenish, depending on the environment and individual species.
Environment
Helice crabs are typically found in intertidal zones and mangrove forests. They thrive in environments with:
- Submerged and exposed areas: Their ability to adapt to both wet and dry conditions allows them to exploit a wide range of habitats.
- Muddy or sandy substrates: They burrow and live in the sediment, finding shelter and food within the substrate.
- Abundant organic matter: Helice crabs are omnivores, feeding on a variety of organic materials, including algae, detritus, and small invertebrates.
References
For more detailed information about the genus Helice, please refer to these reliable sources: