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Fine Structure of Marteilia sydneyi sp. n.: Haplosporidan Pathogen of Australian Oysters
Perkins, Frank O. Wolf, Peter H.
Perkins, Frank O.
Wolf, Peter H.
Abstract
A new species of oyster pathogen, Marteilia sydneyi, from Australian oysters, Crassostrea commercialis, is described incorporating light and electron microscope observations. The pathogen is a haplosporidan which exists as a plasmodium in the oyster hepatopancreas. Upon sporulation, 8 to 16 uninucleate sporangial primordia are internally cleaved (endogenously budded) from each plasmodium; thus conversion to a sporangiosorus occurs. Each sporangium enlarges and internally cleaves into 2 or 3 spore primordia each of which, in turn, internally cleaves into 3 uninucleate sporoplasms of graded sizes, the largest containing the smaller 2 in a vacuole and the intermediate-sized one containing the smallest in a vacuole. The spore wall is continuous without an orifice or operculum.
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1976
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Perkins1976.pdf
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Biological Sciences Peer-Reviewed Articles
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Virginia Institute of Marine Science