Diseases of Aquatic Organisms | |
Low prevalence of splenic mycobacteriosis in migratory striped bass Morone saxatilis from North Carolina and Chesapeake Bay, USA | |
Kevin M. Rosemary1  Mark A. Matsche1  Anthony Overton1  John Jacobs1  Matt R. Rhodes1  | |
关键词: Mycobacteriosis; Striped bass; North Carolina; Chesapeake Bay; Migratory; | |
DOI : 10.3354/dao02226 | |
学科分类:生物科学(综合) | |
来源: Inter-Research | |
【 摘 要 】
ABSTRACT: Mycobacteriosis is a chronic bacterial disease causing an ongoing epizootic in striped bass Morone saxatilis in Chesapeake Bay, USA. Prevalence of disease is high in pre-migratory fish, and multiple species of Mycobacterium spp. have been isolated. However, prevalence of mycobacteriosis in the coastal migratory population is unknown and is of concern to multiple coastal states, as disease-related mortality may impact the long-term health of the population. Histological examinations of spleens collected from fish caught by recreational anglers during the winter fishery in coastal North Carolina (2005–2006, n = 249) and during the spring fishery in Chesapeake Bay (2006, n = 120) indicated a low prevalence of mycobacteriosis (6.8% of all fish examined) in comparison to smaller, pre-migratory Chesapeake Bay fish. Genus-level PCR and subsequent sequencing of the 16–23S intergenic transcribed spacer (ITS) region revealed that all bacteria were phylogenetically related, but species is unknown. Location of survey, gender of fish, and total length of fish had no significant effect on prevalence of mycobacteriosis, parasitic granulomas, or the density of splenic granulomas (p > 0.05). These results may indicate that either granulomas resolve after Chesapeake Bay fish enter the coastal migratory population, or that there is disease-related mortality among pre-migratory Chesapeake Bay fish.
【 授权许可】
Unknown
【 预 览 】
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RO201911300922186ZK.pdf | 2243KB | download |