Relations entre le développement d'un phycomycète et l'accumulation de fer sur la surface branchiale de carcinus maenas (crustacé décapode) au cours du cycle d'intermue

The structure of the branchial surface of Carcinus maenas (Crustacea, decapoda) shows variations during the intermoult cycle. These variations which involve a growing complexity are in close connection with the development of a saprophytic Phycomycete on the branchial lamellae. Filamentous hyphae of the Phycomycete, which take form after exuviation form, at stage C4 of the intermoult cycle, a very thin network which acts like a filter against the particles in the sea water flowing through the branchial chambers. Such a complexity is not observed in Homarus americanus. The branchial surface at stage C4 of the intermoult cycle shows a very uniform appearance. Filamentous hyphae observed in Carcinus maenas do not take form in Homarus americanus. [NOT CONTROLLED OCR]