Efficacy of the treatments used for the control of Caligus rogercresseyi infecting Atlantic salmon, Salmo salar L., in a new fish‐farming location in Region XI, Chile
Abstract C aligus rogercresseyi is the most important parasite affecting A tlantic salmon and rainbow trout farming in sea water in C hile. After the outbreaks of the i nfectious s almon a naemia recorded in R egion X from 2007, the salmon industry has expanded southwards to R egion XI , where 60% o...
| Published in: | Journal of Fish Diseases |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2013
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/jfd.12023 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfd.12023 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12023 |
| Summary: | Abstract C aligus rogercresseyi is the most important parasite affecting A tlantic salmon and rainbow trout farming in sea water in C hile. After the outbreaks of the i nfectious s almon a naemia recorded in R egion X from 2007, the salmon industry has expanded southwards to R egion XI , where 60% of A tlantic salmon in C hile is now produced. In parallel with the relocation of salmon production, sea lice infestation has also spread to R egion XI , and today C . rogercresseyi is the most serious threat to the salmon‐farming industry in this region. The results obtained through a year of monitoring between S eptember 2007 and A ugust 2008 on a farm located in the ‘ L as G uaitecas A rchipelago’ in R egion XI (44°S; 74°W) showed that treatments with emamectin benzoate and deltamethrin did not give the expected control of C aligus . Failures of the treatments were associated with the loss of sensitivity recorded for C . rogercresseyi to emamectin benzoate in R egion X . In addition, a major influence was the lack of delousing coordination measures with the neighbouring farms sharing the same area in that period. |
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