PISCIRICKETTSIA-SALMONIS, A MAJOR PATHOGEN OF SALMONID FISH IN CHILE

被引:30
作者
LANNAN, CN [1 ]
FRYER, JL [1 ]
机构
[1] OREGON STATE UNIV,DEPT MICROBIOL,NASH HALL 220,CORVALLIS,OR 97331
关键词
D O I
10.1016/0165-7836(93)90011-U
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Piscirickettsiosis has resulted in extensive losses among salmonid fishes cultured in southern Chile. It occurs at many seawater sites near Puerto Montt, where recurring epizootics have frequently resulted in mortality approaching 90% among the coho salmon (Oncorhynchus kisutch) cultured there. Three other salmonid species reared in netpens in these waters are also subject to the disease. A unique rickettsial agent, Piscirickettsia salmonis (type strain LF-89), has been isolated in cell culture and demonstrated to be the causative agent of piscirickettsiosis. The obligately intracellular nature of P. salmonis and its occurrence only in salt water suggest that a natural reservoir of infection is maintained by one or more poikilotherms in the marine environment. Identification of this source of infection and elucidation of the natural mode(s) of transmission of the agent are high research priorities. Annual importation of eggs into Chile from salmonid-growing regions in the Northern Hemisphere provides a supply of fish for culture, but one which may have limited natural resistance to fish pathogens unique to Chilean waters. The epizootics of piscirickettsiosis amply demonstrate one unfortunate consequence of the interaction of native species with non-indigenous fish species introduced for aquaculture.
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页码:115 / 121
页数:7
相关论文
共 11 条
[1]  
Bravo, Campos, Coho salmon syndrome in Chile, Am. Fish. Soc. Fish Health Sect. Newsl., 17, (1989)
[2]  
Cvitanich, Garate, Smith, The isolation of a rickettsia-like organism causing disease and mortality in Chilean salmonids and its confirmation by Koch's postulate, Journal of Fish Diseases, 14, pp. 121-145, (1991)
[3]  
Fryer, Lannan, Garces, Larenas, Smith, Isolation of a rickettsiales-like organism from diseased coho salmon (Oncorhynchus kisutch) in Chile, Fish Pathology, 25, pp. 107-114, (1990)
[4]  
Fryer, Lannan, Giovannoni, Wood, Piscirickettsia salmonis gen. nov., sp. nov., the causative agent of an epizootic disease in salmonid fishes, Int. J. Syst. Bacteriol., 42, pp. 120-126, (1992)
[5]  
Garces, Larenas, Smith, Sandino, Lannan, Fryer, Infectivity of a rickettsia isolated from coho salmon (Oncorhynchus kisutch), Diseases of Aquatic Organisms, 11, pp. 93-97, (1991)
[6]  
Gimenez, Staining rickettsiae in yolk-sac cultures, Stain Technol., 39, pp. 139-140, (1964)
[7]  
Lannan, Fryer, Recommended methods for inspection of fish for the salmonid rickettsia, Bull. Eur. Assoc. Fish Pathol., 11, pp. 135-136, (1991)
[8]  
Lannan, Winton, Fryer, Fish cell lines: Establishment and characterization of nine cell lines from salmonids, In Vitro, 20, pp. 671-676, (1984)
[9]  
Lannan, Ewing, Fryer, A fluorescent antibody test for detection of the rickettsia causing diseasein Chilean salmonids, Journal of Aquatic Animal Health, 3, pp. 229-234, (1991)
[10]  
Lauer, Reller, Mirrett, Comparison of acridine orange and Gram stains for detection of microorganisms in cerebrospinal fluid and other clinical specimens, J. Clin. Microbiol., 14, pp. 201-205, (1981)