Ochetostoma
Ochetostoma is a genus of marine polychaete worms in the family Pectinariidae. These worms are commonly known as sand-mason worms or tube worms due to their characteristic habit of constructing tubes out of sand grains. They are found in a wide range of marine environments, from intertidal zones to the deep sea.
Characteristics
Ochetostoma species are characterized by their elongated, segmented bodies and a distinctive fan-shaped structure at the anterior end called a "lophophore". This structure is composed of numerous, ciliated tentacles used for feeding and respiration. The tentacles are typically arranged in a spiral pattern and can be extended to capture food particles suspended in the water column.
The worms also have a pair of long, flexible palps, which are sensory organs used to detect food and potential threats. The body is covered in a layer of mucus and often has a distinctive iridescent sheen. They are also notable for their ability to construct elaborate, tubular dwelling structures from sand grains, held together by a sticky secretion produced by specialized glands.
Environments
Ochetostoma species are found in a wide range of marine habitats, including:
- Intertidal zones
- Subtidal zones
- Continental shelves
- Deep sea
They are typically found in sandy or muddy substrates, where they burrow and construct their sand tube dwellings. Ochetostoma are an important part of the marine ecosystem, serving as food for various fish, birds, and other invertebrates.
References
For more information, you can refer to the following resources: