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Biol Bull 114: 205-214. (April 1958)
© 1958 Marine Biological Laboratory
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A FUNGUS PARASITE IN OVA OF THE BARNACLE CHTHAMALUS FRAGILIS DENTICULATA

T. W. JOHNSON JR. 1

1 Department of Botany, Duke University, Durham, North Carolina

1. Lagenidium chthamalophilum is described as a parasite of the ova of Chthamalus fragilis denticulata. The pathogen is characterized by the formation of a vesicle before sporangial protoplasm migration, and by highly vacuolate, stout vegetative hyphae. In these features, L. chthamalophilum differs from the usual interpretation of members of the genus. The fungus is compared with other Phycomycetes known to parasitize crustacean ova.

2. Artificial inoculation experiments show L. chthanzalophilum to be specific for C. fragilis denticulata. The associated barnacle, Balanus amphitrite, is resistant to the fungus.






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