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Crossaster papposus

(Common Sun Star, Rose Sea Star, Rose Star, Snowflake Star)

Common Names

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Common Names in English:

Common Sun Star, Rose Sea Star, Rose Star, Snowflake Star

Description

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Physical Description

Species Crossaster papposus

This many-rayed seastar has a broad central disk and 8-16 rays , has abundant scattered spines (paxillae) on the aboral surface but no pedicellariae. Its color is a rose-red with light pink or white (picture) (sometines yellow or orange). Up to 30 cm diameter.

Habitat

Depth Range : Extremely low intertidal to 1200 m. Mostly subtidal .

Typically found at an altitude of 0 to 3,012 meters (0 to 9,882 feet).Mean = 1,046.470 meters (3,433.301 feet), Standard Deviation = 573.240 based on 19,906 observations. Altitude information for each observation from British Oceanographic Data Centre.

Biology

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Diet

Diet includes sea pens , nudibranchs such as Archidoris odhneri and Coryphella sp, the scallops Chlamys hastata and C. rubida, bryozoans , and tunicates . Has been known to attack the seastar Evasterias troschelii and Leptasterias sp.

Reproduction

Spawns March to April. Juveniles often cluster subtidally in masses of the tubedwelling polychaete Phyllochaetopterus prolifica. Grow slowly--maximum size is achieved after about 10 years.

Behavior

Predators include the seastars Solaster dawsoni and Pycnopodia helianthoides. May have the symbiotic polychaete worm Arctonoe vittata. This species can move relatively fast for a seastar--up to 70 cm/minute.

Taxonomy

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Unambiguous Synonyms

  1. Solaster papposus (Linnaeus, 1767)

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 27-Dec-2004

Similar Species

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Solaster stimpsoni and S. dawsoni have much smaller central disks in relation to their total diameter and do not have the abundant aboral spines nor this coloration. Pycnopodia helianthoides has more rays (when mature), grows larger, and has abundant pedicellariae, plus its rays are very flabby.

Members of the genus Crossaster

There are approximately 6 species in this genus:

C. campbellicus · C. canopus · C. japonicus · C. multispinus · C. papposus (Common Sun Star) · C. squamatus

Bibliography

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More Info

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal December 09, 2007:

Identifiers

Footnotes

Last Revised: 2008-08-12