Marioniopsis
Marioniopsis is a genus of marine polychaete worms in the family Terebellidae. These worms are commonly known as “feather duster worms” or “beard worms” due to their characteristic feathery, tentacle-like structures used for filter feeding. They are known for their unique anatomical features and diverse distribution in marine habitats.
Common Names
Marioniopsis species are often referred to as "feather duster worms" or "beard worms." These names are derived from the prominent feathery tentacles that extend from their head, resembling a duster or a beard.
Characteristics
Marioniopsis worms exhibit several key characteristics:
- Tentacles: They possess numerous, long, and feathery tentacles that are highly branched and covered in cilia. These tentacles are used for filter feeding, capturing food particles from the water.
- Tube Dwelling: They are typically tube-dwelling worms, constructing their own tubes from secreted mucus and sediment. The tubes often have a characteristic funnel-shaped opening.
- Body Shape: They have a segmented body with a distinct head region bearing the tentacles and a posterior region with numerous bristle-bearing parapodia.
- Size: Marioniopsis species can vary in size, ranging from a few millimeters to several centimeters in length.
Environments
Marioniopsis worms are widely distributed in marine environments, found in both shallow and deep waters. They are commonly found in:
- Intertidal Zones: They are frequently encountered in rocky intertidal areas, attaching to rocks, shells, or seaweeds.
- Subtidal Zones: They can also inhabit subtidal regions, from shallow reefs to deeper, more sediment-rich habitats.
- Estuaries: Some species are adapted to tolerate brackish water conditions and are found in estuaries.
References
For more information on Marioniopsis, refer to the following reliable sources: