Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland
Abstract Mullowney, D. R., Dawe, E. G., Morado, J. F., and Cawthorn, R. J. 2011. Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland. – ICES Journal of Marine Science, 68: . Bitter crab disease (BCD...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsq189 http://academic.oup.com/icesjms/article-pdf/68/3/463/29139592/fsq189.pdf |
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croxfordunivpr:10.1093/icesjms/fsq189 2024-09-15T18:01:53+00:00 Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland Mullowney, Darrell R. Dawe, Earl G. Morado, J. Frank Cawthorn, Richard J. 2011 http://dx.doi.org/10.1093/icesjms/fsq189 http://academic.oup.com/icesjms/article-pdf/68/3/463/29139592/fsq189.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 68, issue 3, page 463-471 ISSN 1095-9289 1054-3139 journal-article 2011 croxfordunivpr https://doi.org/10.1093/icesjms/fsq189 2024-08-27T04:17:54Z Abstract Mullowney, D. R., Dawe, E. G., Morado, J. F., and Cawthorn, R. J. 2011. Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland. – ICES Journal of Marine Science, 68: . Bitter crab disease (BCD), caused by a parasitic dinoflagellate of the genus Hematodinium, is a source of mortality in Newfoundland and Labrador snow crab (Chionoecetes opilio). Prevalence and distribution patterns have been spatially and temporally variable since the discovery of BCD in 1990, and controlling factors are poorly understood. Data from a long-term trap survey in two bays along the northeast coast of Newfoundland are analysed, investigating the influences and interactions of various biotic and abiotic factors over BCD. Factors examined include host size and density, temperature, salinity, and depth. The density of small to medium-sized snow crabs was directly related to prevalence and distribution of BCD, whereas all other factors had either an indirect or no effect. Further, much of the spatio-temporal variability in disease expression is a function of variability in host productivity, growth, and movement. The study also considers the impacts BCD can exert on the commercial fishery, and the potential for predicting intermediate to long-term recruitment potential based on BCD prevalence levels. Article in Journal/Newspaper Chionoecetes opilio Newfoundland Snow crab Oxford University Press ICES Journal of Marine Science 68 3 463 471 |
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Abstract Mullowney, D. R., Dawe, E. G., Morado, J. F., and Cawthorn, R. J. 2011. Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland. – ICES Journal of Marine Science, 68: . Bitter crab disease (BCD), caused by a parasitic dinoflagellate of the genus Hematodinium, is a source of mortality in Newfoundland and Labrador snow crab (Chionoecetes opilio). Prevalence and distribution patterns have been spatially and temporally variable since the discovery of BCD in 1990, and controlling factors are poorly understood. Data from a long-term trap survey in two bays along the northeast coast of Newfoundland are analysed, investigating the influences and interactions of various biotic and abiotic factors over BCD. Factors examined include host size and density, temperature, salinity, and depth. The density of small to medium-sized snow crabs was directly related to prevalence and distribution of BCD, whereas all other factors had either an indirect or no effect. Further, much of the spatio-temporal variability in disease expression is a function of variability in host productivity, growth, and movement. The study also considers the impacts BCD can exert on the commercial fishery, and the potential for predicting intermediate to long-term recruitment potential based on BCD prevalence levels. |
format |
Article in Journal/Newspaper |
author |
Mullowney, Darrell R. Dawe, Earl G. Morado, J. Frank Cawthorn, Richard J. |
spellingShingle |
Mullowney, Darrell R. Dawe, Earl G. Morado, J. Frank Cawthorn, Richard J. Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland |
author_facet |
Mullowney, Darrell R. Dawe, Earl G. Morado, J. Frank Cawthorn, Richard J. |
author_sort |
Mullowney, Darrell R. |
title |
Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland |
title_short |
Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland |
title_full |
Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland |
title_fullStr |
Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland |
title_full_unstemmed |
Sources of variability in prevalence and distribution of bitter crab disease in snow crab (Chionoecetes opilio) along the northeast coast of Newfoundland |
title_sort |
sources of variability in prevalence and distribution of bitter crab disease in snow crab (chionoecetes opilio) along the northeast coast of newfoundland |
publisher |
Oxford University Press (OUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1093/icesjms/fsq189 http://academic.oup.com/icesjms/article-pdf/68/3/463/29139592/fsq189.pdf |
genre |
Chionoecetes opilio Newfoundland Snow crab |
genre_facet |
Chionoecetes opilio Newfoundland Snow crab |
op_source |
ICES Journal of Marine Science volume 68, issue 3, page 463-471 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsq189 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
3 |
container_start_page |
463 |
op_container_end_page |
471 |
_version_ |
1810438957354188800 |