Asterodiscididae
Asterodiscididae is a family of sea stars belonging to the order Valvatida. This family comprises approximately 12 species, distinguished by their distinctive five-rayed, flattened bodies and their ability to regenerate lost limbs. They are commonly found in the Indo-Pacific region, inhabiting various marine environments from shallow reefs to deep sea trenches.
Common Names
Asterodiscididae are often referred to as "five-rayed sea stars" due to their characteristic five arms. However, they lack a widely recognized common name.
Characteristics
Asterodiscididae possess several defining characteristics, including:
- Five arms: These sea stars have a distinct five-armed body structure, with each arm tapering towards the tip.
- Flattened body: The body is flattened dorsoventrally, allowing them to move easily across surfaces.
- Regeneration: Asterodiscididae have the remarkable ability to regenerate lost limbs, a crucial survival mechanism.
- Spines: Their surface is covered in numerous spines, providing protection and aiding in locomotion.
- Tube feet: These are small, muscular appendages located on the ventral surface, used for movement and feeding.
Environments
Asterodiscididae are primarily found in the Indo-Pacific region, inhabiting a variety of marine environments, such as:
- Coral reefs: Many species thrive in the diverse ecosystems of shallow reefs.
- Deep sea: Some species inhabit deeper environments, including trenches and seamounts.
- Soft sediments: Others prefer sandy or muddy bottoms.
References
For further information on Asterodiscididae, refer to the following reliable sources: