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Vase tunicate

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Ascidian

Vase tunicate

Ciona intestinalis (Linnaeus, 1767)

WoRMS AphialID

103732

Sample IDs

Collected

Southern Shore NS, Grand Manan NB, SCUBA-hand collection on rocks and hand collection from submerged dock tires, 1-8 m depth.

Distinguishing Features

• Form: tall, slender and the test is a transparent whitish-yellow.
• Siphons: with yellow rings around the siphon openings and small red dots in around periphery.
• Branchial sac: no folds, straight stigmata and prominent curved papillae.
• Gut: short, nearly horizontal and below to branchial sac.
• Gonads: below the branchial sac with the gut loop.

Habitat

Found on pilings and hard substrates, 0-457 m depth.

Geographic Range

Native to Europe from Norway to Spain, it is invasive to the northwest Atlantic from Newfoundland to Long Island Sound, Iceland, South Africa and the northwest Pacific.

Fun Fact

Its scientific name is derived from the Greek word kion (pillar) and the Latin word intestinum (intestines), translating to “pillar of intestines”.

Barcode Distribution

BIN matching Europe and Canada.

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