Iconaster
Iconaster is a genus of sea stars in the family Oreasteridae. These sea stars are characterized by their flattened, pentagonal or slightly stellate shape and often have prominent, regularly arranged tubercles or spines on their aboral (upper) surface. They are found in tropical and subtropical waters, often in sandy or muddy bottoms.
Characteristics:
- Shape: Typically pentagonal to slightly stellate (star-shaped) with relatively short arms. The overall body form is generally flattened.
- Surface Ornamentation: Possesses distinct tubercles or spines on the aboral surface. The arrangement and shape of these structures are often diagnostic for specific species.
- Marginal Plates: Well-defined marginal plates, which form a distinct border around the sea star's body.
- Habitat: Predominantly found in marine environments, often on sandy or muddy substrates in tropical and subtropical regions.
- Size: Varies depending on the species, but generally reaches a moderate size for sea stars.
Taxonomy:
- Kingdom: Animalia
- Phylum: Echinodermata
- Class: Asteroidea
- Order: Valvatida
- Family: Oreasteridae
- Genus: Iconaster
Ecological Role:
- Like other sea stars, Iconaster species are typically benthic predators or scavengers. They contribute to the structuring of benthic communities through their feeding habits. Their diet may include small invertebrates and organic matter.
Conservation Status:
- The conservation status of specific Iconaster species varies and is often understudied. Some species may be vulnerable to habitat degradation or over-collection, while others may be relatively common. Broad habitat loss and climate change pose potential threats.
Note: Taxonomic classifications can change based on new research and phylogenetic analyses. Always consult up-to-date scientific literature for the most current information.