This article is about a bristle-worm anatomical feature. For the snail of
Aciculidae family, see Acicula (gastropod).
Acicula (singular: aciculum) are strong, stout internal chaetae that provide support to parapodia in polychaete annelids.[1]
Microscope photograph of a parapodium from a specimen of Arctonoe sp. showing the internal acicula that support the two lobes of the parapodium.
References
- ^ Hutchings, P. A.; Fauchald, K. (2000). Polychaetes and Allies: the Southern Synthesis - Class Polychaeata: Definition and General Description. Melbourne: CSIRO Publishing. pp. 1–3.
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