Myida

Characteristics

Myida species are characterized by their elongated, worm-like bodies and reduced shells. The shells are typically small and located at the anterior end of the body, covering the head and part of the mantle. They possess a pair of siphons, one for inhaling water and another for exhaling, that extend from the posterior end of the body and are used for respiration and feeding. The mantle of shipworms secretes a calcium carbonate lining that protects them from the surrounding wood.

Environments

Shipworms are found in marine environments worldwide, inhabiting intertidal zones, estuaries, and coastal waters. They thrive in warm, tropical and subtropical regions, where they can cause significant damage to wooden structures. Shipworms are particularly common in areas with high levels of wood debris, such as harbors, shipyards, and mangrove forests.

Ecology

Shipworms play an important role in marine ecosystems by breaking down wood and releasing nutrients into the environment. They are also an important food source for various marine animals, including fish, crabs, and seabirds. However, their wood-boring activities can have negative impacts on human activities, particularly in coastal areas. They are known to cause significant damage to wooden structures, such as docks, piers, and boats, leading to economic losses and safety hazards.

Notable Species

• Teredo navalis: This species is known as the "common shipworm" and is considered one of the most destructive species. It is found in temperate and subtropical waters around the world.
• Bankia setacea: This species is known as the "giant shipworm" and is the largest species of shipworm. It can reach lengths of over 1 meter.

References

Wikipedia: Shipworm
ScienceDirect: Shipworm
National Center for Biotechnology Information: The biology of shipworms