Moulting in the chalimus larva of the salmon louse Lepeophtheirus salmonis (Copepoda, Caligidae)

Citation

Bron J, Shinn A & Sommerville C (2000) Moulting in the chalimus larva of the salmon louse Lepeophtheirus salmonis (Copepoda, Caligidae). Contributions to Zoology, 69 (1/2), pp. 31-38. http://www.ctoz.nl/ctz/vol69/nr01/art03

Abstract
The ultrastructure of moulting in the chalimus phase of the parasitic caligid copepod Lepeophtheirus salmonis is described for the first time. The major features of the moult sequence correspond to those of other Crustacea, save for the absence of a distinguishable intermoult as defined by reduced epidermal activity and a cessation of cuticle production. This latter may be explained either in terms of a continuous moulting process related to the constant food supply available to a parasite or in terms of a highly abbreviated intermoult period. The findings are discussed with respect to studies of other Crustacean species.

Keywords
Lepeophtheirus salmonis; chalimus; Copepoda; moult; cuticle; ultrastructure; parasite

Journal
Contributions to Zoology: Volume 69, Issue 1/2

People

Professor James Bron

Professor, Institute of Aquaculture