Arenicolidae

Arenicolidae

[ə‚ren·ə′käl·ə‚dē]
(invertebrate zoology)
The lugworms, a family of mud-swallowing worms belonging to the Sedentaria.

Arenicolidae

 

a family of polychaetous worms. Of the more than 20 species, four are encountered in the USSR. The worms reach 30 cm in length and are dark brown or greenish gray. The head is greatly reduced, and the pharynx is eversible. The middle portion of the body has bristles, or chaetae, and branched bundles of red gills. The worms live along coasts, mainly in the area exposed to the ebb tide. The animals dig U-shaped burrows. The worms leave conical piles of excrement on the ground near the burrows, thus making identification of their colonies easy.

References in periodicals archive ?
Arenicolidae, Maldanidae, and Terebellidae) and share the unusual ability to capture large particles, it seems plausible that the most recent common ancestor of all three taxa had planktotrophic larvae that fed using the same mechanism(s) used by U.
Families not found in both surveys were: Paraonidae, Magelonidae, Apistobranchidae, Sphaerodoridae, Trichobranchidae, Chrysopetalidae and Arenicolidae.