Acanthochitona

Common Names

Acanthochitona species are commonly referred to as "spiny chitons" due to their prominent, spiny shells. Some species may have additional common names depending on their geographic distribution and local usage.

Characteristics

Acanthochitona chitons are characterized by the following features:

• Eight Articulated Shell Plates: Like all chitons, Acanthochitona have eight overlapping shell plates, known as valves, that cover their dorsal surface. These plates are typically quite strong and are made of calcium carbonate.
• Spiny Plates: The most distinctive feature of Acanthochitona species is their spiny plates. These spines can be sharp and prominent, varying in size and shape depending on the species. They provide protection against predators and may also help with camouflage.
• Girdle: The shell plates are connected by a tough, leathery girdle that runs around the entire body. The girdle can have various textures and may also be studded with spines or scales.
• Foot: Acanthochitona have a large, muscular foot that is used for locomotion. They crawl slowly over rocks and other surfaces using their foot to grip the substrate.
• Radula: These chitons have a radula, a tongue-like structure covered in tiny teeth, which they use to scrape algae and other food sources from rocks.
• Mantle Cavity: Acanthochitona have a mantle cavity located on their ventral side. This cavity houses their gills, which are responsible for respiration.

Environment

Acanthochitona species are typically found in intertidal zones and shallow waters. They prefer rocky substrates with abundant algae and other food sources. Some species may also occur in deeper waters, up to several hundred meters.

References

For more detailed information on Acanthochitona, refer to the following online resources:

• World Register of Marine Species (WoRMS)
• Global Biodiversity Information Facility (GBIF)
• Wikipedia