Ophiotrichidae
Ophiotrichidae is a family of brittle stars belonging to the order Ophiurida. They are commonly known as “brittle stars” or “snake stars” due to their distinctive, slender arms that are easily detached from the central disc. Members of this family are widely distributed in marine environments worldwide, inhabiting a variety of habitats from shallow coastal waters to the deep sea.
Characteristics
Ophiotrichidae members possess several key characteristics that distinguish them from other brittle star families. They typically have five arms, but some species may have six or more. Their arms are slender and flexible, allowing them to move rapidly and easily navigate complex environments. The arms are covered with small, overlapping scales, which provide protection and enhance their ability to grip surfaces.
Ophiotrichidae species often have a distinct central disc, which is the body of the brittle star. The disc can be circular or slightly oval-shaped and may be covered with spines or other structures. They lack a distinct head and possess a mouth located on the underside of the disc. The mouth is surrounded by a ring of five jaws, each with a pair of sharp, tooth-like projections.
These brittle stars are generally small to medium-sized, with most species reaching a diameter of less than 10 centimeters. However, some species can grow much larger, reaching lengths of up to 30 centimeters or more.
Environment
Ophiotrichidae brittle stars are found in a wide range of marine environments, from shallow intertidal zones to the deep sea. They inhabit a variety of substrates, including rocky reefs, sandy bottoms, and seagrass meadows. They are particularly abundant in areas with strong currents, where they can feed on suspended particles and detritus.
Some species of Ophiotrichidae are known to be commensal with other marine organisms, such as corals and sponges. They may live on or within these hosts, feeding on their waste products or parasites.
Diet
Ophiotrichidae brittle stars are primarily detritivores, feeding on dead organic matter, such as decaying plants, algae, and animal remains. They also scavenge for small invertebrates and may occasionally prey on live organisms. Their feeding method involves extending their arms to capture food particles, which are then transported to the mouth using their tube feet.
References
For more information on Ophiotrichidae, you can consult the following reliable references: