Towards selective breeding of Atlantic salmon for sea louse resistance: approaches to identify trait markers
Abstract Several species of sea lice, in particular Lepeophtheirus salmonis (Krøyer), affect the welfare and condition of farmed salmon, with an estimated annual cost to the Scottish industry of £15–30 million. In Atlantic salmon, some stocks show resistance to L salmonis . Such natural resistance c...
| Published in: | Pest Management Science |
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| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2002
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1002/ps.511 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fps.511 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ps.511 |
| Summary: | Abstract Several species of sea lice, in particular Lepeophtheirus salmonis (Krøyer), affect the welfare and condition of farmed salmon, with an estimated annual cost to the Scottish industry of £15–30 million. In Atlantic salmon, some stocks show resistance to L salmonis . Such natural resistance could be utilized for stock improvement using molecular genetic technologies. The development of molecular markers linked to resistance genes, allowing the identification of resistant fish, could increase the efficacy of selective breeding programmes. Various approaches to achieve this goal are described. One way to identify genes conferring resistance is to develop screens for salmon genes that are activated upon louse infection. One such screen—differential display—requires no previous knowledge of gene sequences, involves no preconceptions about which gene families are involved and can therefore identify novel genes. Preliminary results of comparative gene expression in sea‐louse‐challenged and control fish illustrate the application of differential display. © 2002 Society of Chemical Industry |
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