Polycera marplatensis is a species of colorful sea slug, belonging to the family Polyceridae. These nudibranchs are known for their striking appearance and diverse distribution.
Description & Characteristics
Polycera marplatensis is a relatively small nudibranch, with an average size of 10mm. The species is characterized by its vibrant orange or reddish body, often adorned with numerous white spots. It possesses two prominent, pointed rhinophores, which are sensory organs used for detecting food and navigating the environment. Two prominent oral tentacles are located at the anterior end of the body, playing a role in the capture and ingestion of prey.
Habitat and Occurrence
Polycera marplatensis primarily inhabits the intertidal zone, residing in rocky areas and tide pools. These nudibranchs are commonly found along the Atlantic coast of South America, specifically in Argentina. This species’ distribution aligns with the temperate marine zone, a biogeographic region characterized by moderate water temperatures and diverse marine life.
Taxonomy
Polycera marplatensis belongs to the class Gastropoda, which encompasses a vast group of mollusks known for their coiled shells. Within Gastropoda, the species falls under the order Nudibranchia, representing a group of sea slugs that have lost their external shells during evolution. This order is further divided into various families, with Polycera marplatensis being a member of the Polyceridae family.
Feeding
Polycera marplatensis is a carnivorous nudibranch, feeding primarily on a variety of hydroids, which are colonial organisms composed of tiny polyps. These sea slugs utilize their sharp, radula, a tongue-like structure lined with teeth, to scrape and consume the polyps and their associated tissues. The species’ diet plays a significant role in its distribution, as hydroids are common inhabitants of rocky intertidal zones, providing a readily available food source.
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