Pisaster ochraceus The Purple Sea star is a medium size animal found on rocky shores where it feeds primarily on barnacles. The starfish Pisaster ochraceus is a keystone species in the rocky marine intertidal communities off the northwest coast of North America. They tend to come in three distinct colors: purple, orange and brownish-red. Pisaster ochraceus ochraceus : Other Source(s): Source: NODC Taxonomic Code, database (version 8.0) Acquired: 1996 : Notes: Reference for: ... Common Name: Scientific Name : TSN: In: Kingdom Go to Advanced Search and Report . Like all sea stars, an adult P. ochraceus has tube feet which they use for locomotion and for handling prey. In the cold waters of the Puget Sound area Pisaster ochraceus moves into deeper water during winter and does not feed. At the larval stage, Pisaster ochraceus are filter feeders, eating plankton. Another common name for this species is ochre sea star. The tropical crown-of-thorns starfish ( Acanthaster planci ) is a voracious predator of coral throughout the Indo-Pacific region, and the northern Pacific sea star is considered to be one of the world's 100 worst invasive species . Pisaster ochraceus sea stars have long been referred to as keystone species in the rocky intertidal (Paine 1966, Menge 2004) and, while they are known to have a wide diet (including barnacles, snails, limpets, and chitons), mussels are their primary prey items on the open coast (Morris et al. When the starfish have been removed experimentally, the mussel populations have expanded rapidly and … Ochre sea stars are found on rocky shores from Alaska to California. Starfish, such as the ochre sea star (Pisaster ochraceus) and the reef sea star (Stichaster australis), have become widely known as examples of the keystone species concept in ecology. 1980, Harley et al 2006). Pisaster ochraceus is the first sea star species observed with “starfish wasting syndrome,” a plague of significant concern to scientists, which causes sea stars along the North American Pacific coast to soften, lose their arms, and eventually disintegrate, sometimes just days after first symptoms appear. Pisaster ochraceous feeds on mussels, chitons, and limpets, which they slowly pry open and devour. Another common name for this species is ochre sea star. Pisaster ochraceus (Brandt, 1835) (accepted name) Synonyms: Asteracanthion margaritifer Müller & Troschel, 1842 (synonym) Asterias ianthina Brandt, 1835 (synonym) Asterias margaritifera Brandt, 1930, in Fisher (synonym) Asterias ochracea Brandt, 1835 (synonym) Pisaster confertus (Stimpson, 1862) (synonym) Pisaster fissispinus (Stimpson, 1862) (synonym) ... Common names Synonyms Predators Reproduction Maturity Spawning Fecundity Eggs Egg development. Pisaster ochraceus (Brandt, 1835) Aug 8, 2003 : Integrated Taxonomic Information System Age/Size Growth Length … Short-spined star (Pisaster brevispinus) Ochre star (Pisaster ochraceus) False Ochre Star (Evasterias troschelii) Primary Common Name: Giant-spined star General Grouping: Sea stars, urchins, cucumbers, sand dollars, brittle stars Geographic Range: Description: Intertidal Height: Lowest: 0 meters or -2 feet Highest: 0 meters or 0 feet Notes: This predatory starfish feeds on the mussel Mytilus californianus and is responsible for maintaining much of the local diversity of species within certain communities. Pisaster ochraceus AquaMaps Data sources: GBIF OBIS: Upload your photos Google image | No photo available for this species. Its arms are relatively short (R/r = 2.7 to 4.1)* Although its common name implies that it is most often purple, it is as likely to be … Puget Sound area Pisaster ochraceus are filter feeders, eating plankton and limpets, which they slowly pry and... 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