Chelyosoma productum

Disc-top tunicate:

Disc-top tunicate (Chelyosoma productum): This species has "flaps" which seal off the siphons when closed, and at a microscopic level can be identified by the spiral rows of stigmata. It is hard when pulled out of the water, and differs from other ascidians by having a flat disc on top, which is organized in about sixteen plates (plus the siphon plates), as opposed to the twelve plates of Chelyosoma columbianum, which is described from British Columbia and the Western Pacific (Sanamyan 1998).

Also, C. columbianum has thin margins around the disk-top, and around each plate.

Local Notes

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References

Weblinks

• WoRMS page for Chelyosoma productum

• WoRMS Page for Chelyosoma productum
• Search Arctos Database for Chelyosoma productum (Southeast only)
• Search Arctos Database for Chelyosoma productum (entire database)
• Encyclopedia of Life search for Chelyosoma productum
• iNaturalist Observations for Chelyosoma productum in Southeast Alaska

Other References

• Lamb Hanby 2005
• O'Clair O'Clair 1998
• Lambert Sanamyan 2001
• Sanamyan 1998

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  Disc-top tunicate (Chelyosoma productum)

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