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| Jackson, David; Deady, Sandra; Hassett, Daniel; Leahy, Yvonne. |
| Infestation patterns of Caligus elongatus on farmed Atlantic salmon and rainbow trout were investigated at several sites along the west coast of Ireland. Parasite abundances were examined in relation to host species, farm location and season. Differences were found in the relative prevalence of infestation between salmon and rainbow trout. Caligus elongatus generally contributed more as a proportion of the total lice burden on rainbow trout than on Atlantic salmon. Evidence of possible parasite transmission from wild fish stocks was found at a number of sites where marked seasonal changes in parasite abundance were observed. A wide size distribution of adult female Caligus elongatus was found at a number of sites. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Sea lice; Farmed salmonids; Ireland. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/534394 |
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| Jackson, David; Hassett, Daniel; Deady, Sandra; Leahy, Yvonne. |
| The investigation of specific characteristics of Lepeophtheirus salmonis populations on farmed salmon was made possible by the examination of the parasite infestation parameters of regular non destructive samples taken for up to six years in five bays. Perennial persistence of seasonal patterns of infestation as exhibited by intensity, prevalence and abundance was examined. Site specific characteristics were detected which appeared to be independent of inter-annual variations. Seasonal variations in individual lice size and fecundity, and temporal variation in population dynamics on the farmed fish in the five bays are considered in the context of the not inconsiderable changes in husbandry and lice control practices which have been introduced in the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Sea lice; Farmed salmon. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/534374 |
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