The cuticle of the chalimus II stage of Lepeophtheirus salmonis (Copepoda: Caligidae) comprised a four-layered epicuticle with a pronounced fuzzy coat which was separated from the outer and inner procuticles by a layer of transitional procuticle. The cuticle is underlain by a single-layered epidermis which overlies integumental glands and chromatophores. The structure of this cuticle is very similar to that described for free-living copepods and does not display the modifications associated with more highly transformed parasitic species.

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Keywords chalimus, Copepoda, cuticle, ultrastructure, parasite
Journal Contributions to Zoology
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Released under the CC-BY 4.0 ("Attribution") License

Citation
Bron, J.E, Shinn, A.P, & Sommerville, C. (2000). Ultrastructure of the cuticle of the chalimus larva of the salmon louse Lepeophtheirus salmonis (Krøyer, 1837) (Copepoda: Caligidae). Contributions to Zoology, 69(1/2), 39–49.