Haplosporidium tumefacientis sp. n., the etiologic agent of a disease of the California sea mussel, Mytilus californianus Conrad |
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| Authors: | R L Taylor |
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| Affiliation: | 1. Laboratory of Animal Pathology, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Rua dos Bragas No. 289, 4050-123 Porto, Portugal;2. Laboratory of Cell Biology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira No. 228, 4050-313 Porto, Portugal;3. Department of Sciences, High Institute of Health Sciences — North, CESPU, Rua Central da Gandra No. 1317, 4585-116 Gandra, Portugal;4. Department of Biology, Faculty of Sciences (FCUP), University of Porto, Rua do Campo Alegre, s/n, FC4, 4169-007 Porto, Portugal;5. Zoology Department, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia |
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| Abstract: | Examination of large numbers of two species of marine mussels—the California sea mussel, Mytilus californianus Conrad, and the Bay mussel, Mytilus edulis Linnaeus—revealed the presence of tumefactions (swellings) in the digestive gland (“liver”) and kidney of the California mussel. Microscopic examination demonstrated that a haplosporidian parasite was responsible for the diseased condition. The parasite was found to be an undescribed species of Haplosporidium and was therefore described and named Haplosporidium tumefacientis sp. n. It is the first member of the genus (as recently redefined) reported from a mollusk. Certain histochemical reactions of the parasite are described as well as the negative results from culture and infection experiments. |
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