Abstract
The seasonality of proliferative kidney disease (PKD) in rainbow trout, Salmo gairdneri Richardson, at the American River Hatchery, California was found to be primarily dependent on the presence or absence of the infectious stage in the water supply. This was determined by introducing sentinel trout into the hatchery water supply on a monthly basis, followed by their transfer to the laboratory for subsequent holding in 18° C, pathogen‐free water for one month prior to examination. These exposures demonstrated that infections were obtained from April through October at ambient temperatures 12–20° C. Trout which had recovered from clinical infections were found to be resistant to reinfection. Resistance was induced by active infection and not just previous exposure to the infectious stage. Trout surviving PKD were also found to harbour later sporogonic stages of the parasite for at least one year following initial infection, but fully formed spores, as judged by well‐developed valves, were not observed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 477-483 |
| Number of pages | 7 |
| Journal | Journal of Fish Biology |
| Volume | 30 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 1987 |
Fingerprint
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science
Cite this
Seasonal occurrence of the infectious stage of proliferative kidney disease (PKD) and resistance of rainbow trout, Salmo gairdneri Richardson, to reinfection. / Foott, J. S.; Hedrick, Ronald.
In: Journal of Fish Biology, Vol. 30, No. 4, 01.01.1987, p. 477-483.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Seasonal occurrence of the infectious stage of proliferative kidney disease (PKD) and resistance of rainbow trout, Salmo gairdneri Richardson, to reinfection
AU - Foott, J. S.
AU - Hedrick, Ronald
PY - 1987/1/1
Y1 - 1987/1/1
N2 - The seasonality of proliferative kidney disease (PKD) in rainbow trout, Salmo gairdneri Richardson, at the American River Hatchery, California was found to be primarily dependent on the presence or absence of the infectious stage in the water supply. This was determined by introducing sentinel trout into the hatchery water supply on a monthly basis, followed by their transfer to the laboratory for subsequent holding in 18° C, pathogen‐free water for one month prior to examination. These exposures demonstrated that infections were obtained from April through October at ambient temperatures 12–20° C. Trout which had recovered from clinical infections were found to be resistant to reinfection. Resistance was induced by active infection and not just previous exposure to the infectious stage. Trout surviving PKD were also found to harbour later sporogonic stages of the parasite for at least one year following initial infection, but fully formed spores, as judged by well‐developed valves, were not observed.
AB - The seasonality of proliferative kidney disease (PKD) in rainbow trout, Salmo gairdneri Richardson, at the American River Hatchery, California was found to be primarily dependent on the presence or absence of the infectious stage in the water supply. This was determined by introducing sentinel trout into the hatchery water supply on a monthly basis, followed by their transfer to the laboratory for subsequent holding in 18° C, pathogen‐free water for one month prior to examination. These exposures demonstrated that infections were obtained from April through October at ambient temperatures 12–20° C. Trout which had recovered from clinical infections were found to be resistant to reinfection. Resistance was induced by active infection and not just previous exposure to the infectious stage. Trout surviving PKD were also found to harbour later sporogonic stages of the parasite for at least one year following initial infection, but fully formed spores, as judged by well‐developed valves, were not observed.
UR - http://www.scopus.com/inward/record.url?scp=84985143312&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84985143312&partnerID=8YFLogxK
U2 - 10.1111/j.1095-8649.1987.tb05771.x
DO - 10.1111/j.1095-8649.1987.tb05771.x
M3 - Article
AN - SCOPUS:84985143312
VL - 30
SP - 477
EP - 483
JO - Journal of Fish Biology
JF - Journal of Fish Biology
SN - 0022-1112
IS - 4
ER -