Eudendrium arbuscula is a species of hydroid, a type of colonial cnidarian, belonging to the family Eudendriidae. It is a small, delicate organism that is typically found in marine environments around the world.
Description & Characteristics
Eudendrium arbuscula is a small, branching hydroid that can reach a maximum size of a few centimeters in height. It has a distinctive arborescent growth form, resembling a miniature tree with multiple branches extending from a central stalk. Its polyps are typically small and white, with a distinctive bell-shaped structure that contains tentacles. Each polyp is responsible for feeding and defense.
Habitat and Occurrence
Eudendrium arbuscula is a common species that can be found in a variety of marine habitats, including rocky shores, seagrass beds, and kelp forests. It is typically found in shallow water, with a depth range from the intertidal zone to about 10 meters. This species is commonly found in the neritic zone, the coastal region of the ocean extending from the shoreline to the edge of the continental shelf, where it is often attached to rocks, algae, and other substrates.
Taxonomy
Eudendrium arbuscula belongs to the Class Hydrozoa, Order Anthoathecata, and Family Eudendriidae. This classification reflects its unique evolutionary history and shared characteristics with other hydroids. The Anthoathecata order is characterized by the presence of polyps with a distinctive mouth and tentacles, while the Eudendriidae family features hydroids that are typically branching and often have a distinctive arborescent growth form.
Feeding
Eudendrium arbuscula, like other hydroids, is carnivorous. It captures its prey, which includes small invertebrates and plankton, with its tentacles. The tentacles have stinging cells called nematocysts that paralyze and kill the prey before it is brought to the mouth for consumption.
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