IUCN threat status:

Not evaluated

Comprehensive Description

Read full entry
Biology/Natural History: Growth rings may be prominent, especially in the northern parts of its range, as this species nearly ceases feeding in winter. Yearly growth lines are much less prominent farther south, but tidal cycle growth lines can often be seen. Mantle margin has tiny tentacles with tiny eyes. Pumps 2.51 liters of water per hour per gram body weight. Predators include Pycnopodia helianthoides, Pisaster brevispinus, and Cancer magister, and gulls. The cockle has a strong escape response to Pycnopodia--rapidly extending its foot and jumping away (movie). May be a source of paralytic shellfish poisoning (PSP) for humans. A simultaneous hermaphrodite. In Puget Sound they mature in their second year and spawn in July and August. Live 15-19 years in Alaska. May contain small pea crabs such as Pinnixa faba inside the mantle cavity.

Trusted

Creative Commons Attribution Non Commercial Share Alike 2.0 (CC BY-NC-SA 2.0)

© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!