Diseases of oysters Crassostrea ariakensis and C. virginica reared in ambient waters from the Choptank River, Maryland and the Indian River Lagoon, Florida
| Autor: | Nancy A. Stokes, Christopher F. Dungan, Susan Laramore, Ryan B. Carnegie, John Scarpa, Christopher J. Kelly, Kristina M. Hill, Carol B. Mccollough |
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| Rok vydání: | 2012 |
| Předmět: |
Oyster
Time Factors animal structures Range (biology) Haplosporida Zoology Aquaculture Aquatic Science Host-Parasite Interactions Bonamia ostreae Rivers Species Specificity Perkinsus marinus biology.animal Animals Crassostrea Ecosystem Ecology Evolution Behavior and Systematics Maryland biology Haplosporidium nelsoni fungi food and beverages Pacific oyster biology.organism_classification Fishery Crassostrea ariakensis Florida Eastern oyster |
| Zdroj: | Diseases of Aquatic Organisms. 101:173-183 |
| ISSN: | 1616-1580 0177-5103 |
| DOI: | 10.3354/dao02531 |
| Popis: | To assess potential benefits and liabilities from a proposed introduction of Asian Suminoe oysters, susceptibilities of exotic Crassostrea ariakensis and native C. virginica oysters were compared during exposures to pathogens endemic in temperate, mesohaline waters of Chesapeake Bay and sub-tropical, polyhaline Atlantic waters of southern Florida, USA. Cohorts of diploid, sibling oysters of both species were periodically tested for diseases while reared in meso- cosms receiving ambient waters from the Choptank River, Maryland (>3 yr) or the Indian River Lagoon, Florida (10 to 11 mo). Haplosporidium sp. infections (e.g. MSX disease) were not detected in oysters from either site. Perkinsus sp. infections (dermo disease) occurred among members of both oyster species at both sites, but infections were generally of low or moderate intensities. A Bonamia sp. was detected by PCR of DNAs from tissues of both oyster species following exposure to Florida waters, with maximum PCR prevalences of 44 and 15% among C. ariakensis and C. vir- ginica oysters respectively during June 2007. Among C. ariakensis oysters sampled during April to July 2007, a Bonamia sp. was detected in 31% of oysters by PCR (range 11 to 35%) and con- firmed histologically in 10% (range 0 to 15%). Among simultaneously sampled C. virginica oys- ters, a Bonamia sp. was detected in 7% by PCR (range 0 to 15%), but histological lesions were absent. Although this is the first report of a Bonamia sp. from Florida waters, sequences of small subunit (SSU) rDNA and in situ hybridization (ISH) assays both identified the Florida pathogen as Bonamia exitiosa, which also infects oysters in the proximate waters of North Carolina, USA. |
| Databáze: | OpenAIRE |
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