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Sea lice as a density-dependent constraint to salmonid farming
Fisheries catches worldwide have shown no increase over the last two decades, while aquaculture has been booming. To cover the demand for fish in the growing human population, continued high growth rates in aquaculture are needed. A potential constraint to such growth is infectious diseases, as dise...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350688/ https://www.ncbi.nlm.nih.gov/pubmed/22319130 http://dx.doi.org/10.1098/rspb.2012.0084 |
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author | Jansen, Peder A. Kristoffersen, Anja B. Viljugrein, Hildegunn Jimenez, Daniel Aldrin, Magne Stien, Audun |
author_facet | Jansen, Peder A. Kristoffersen, Anja B. Viljugrein, Hildegunn Jimenez, Daniel Aldrin, Magne Stien, Audun |
author_sort | Jansen, Peder A. |
collection | PubMed |
description | Fisheries catches worldwide have shown no increase over the last two decades, while aquaculture has been booming. To cover the demand for fish in the growing human population, continued high growth rates in aquaculture are needed. A potential constraint to such growth is infectious diseases, as disease transmission rates are expected to increase with increasing densities of farmed fish. Using an extensive dataset from all farms growing salmonids along the Norwegian coast, we document that densities of farmed salmonids surrounding individual farms have a strong effect on farm levels of parasitic sea lice and efforts to control sea lice infections. Furthermore, increased intervention efforts have been unsuccessful in controlling elevated infection levels in high salmonid density areas in 2009–2010. Our results emphasize host density effects of farmed salmonids on the population dynamics of sea lice and suggest that parasitic sea lice represent a potent negative feedback mechanism that may limit sustainable spatial densities of farmed salmonids. |
format | Online Article Text |
id | pubmed-3350688 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-33506882012-05-17 Sea lice as a density-dependent constraint to salmonid farming Jansen, Peder A. Kristoffersen, Anja B. Viljugrein, Hildegunn Jimenez, Daniel Aldrin, Magne Stien, Audun Proc Biol Sci Research Articles Fisheries catches worldwide have shown no increase over the last two decades, while aquaculture has been booming. To cover the demand for fish in the growing human population, continued high growth rates in aquaculture are needed. A potential constraint to such growth is infectious diseases, as disease transmission rates are expected to increase with increasing densities of farmed fish. Using an extensive dataset from all farms growing salmonids along the Norwegian coast, we document that densities of farmed salmonids surrounding individual farms have a strong effect on farm levels of parasitic sea lice and efforts to control sea lice infections. Furthermore, increased intervention efforts have been unsuccessful in controlling elevated infection levels in high salmonid density areas in 2009–2010. Our results emphasize host density effects of farmed salmonids on the population dynamics of sea lice and suggest that parasitic sea lice represent a potent negative feedback mechanism that may limit sustainable spatial densities of farmed salmonids. The Royal Society 2012-06-22 2012-02-08 /pmc/articles/PMC3350688/ /pubmed/22319130 http://dx.doi.org/10.1098/rspb.2012.0084 Text en This journal is © 2012 The Royal Society http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Jansen, Peder A. Kristoffersen, Anja B. Viljugrein, Hildegunn Jimenez, Daniel Aldrin, Magne Stien, Audun Sea lice as a density-dependent constraint to salmonid farming |
title | Sea lice as a density-dependent constraint to salmonid farming |
title_full | Sea lice as a density-dependent constraint to salmonid farming |
title_fullStr | Sea lice as a density-dependent constraint to salmonid farming |
title_full_unstemmed | Sea lice as a density-dependent constraint to salmonid farming |
title_short | Sea lice as a density-dependent constraint to salmonid farming |
title_sort | sea lice as a density-dependent constraint to salmonid farming |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350688/ https://www.ncbi.nlm.nih.gov/pubmed/22319130 http://dx.doi.org/10.1098/rspb.2012.0084 |
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