Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua)
The amount of ultraviolet (UV) radiation reaching the earth's surface has increased due to depletion of the ozone layer. Several studies have reported that UV radiation reduces survival of fish larvae. However, indirect and sub-lethal impacts of UV radiation on fish behavior have been given lit...
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ftpubmed:oai:pubmedcentral.nih.gov:3334909 2023-05-15T15:27:45+02:00 Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua) Fukunishi, Yuichi Browman, Howard I. Durif, Caroline M. F. Bjelland, Reidun M. Skiftesvik, Anne Berit 2012-04-19 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334909 http://www.ncbi.nlm.nih.gov/pubmed/22536406 https://doi.org/10.1371/journal.pone.0035554 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334909 http://www.ncbi.nlm.nih.gov/pubmed/22536406 http://dx.doi.org/10.1371/journal.pone.0035554 Fukunishi et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2012 ftpubmed https://doi.org/10.1371/journal.pone.0035554 2013-09-04T06:08:04Z The amount of ultraviolet (UV) radiation reaching the earth's surface has increased due to depletion of the ozone layer. Several studies have reported that UV radiation reduces survival of fish larvae. However, indirect and sub-lethal impacts of UV radiation on fish behavior have been given little consideration. We observed the escape performance of larval cod (24 dph, SL: 7.6±0.2 mm; 29 dph, SL: 8.2±0.3 mm) that had been exposed to sub-lethal levels of UV radiation vs. unexposed controls. Two predators were used (in separate experiments): two-spotted goby (Gobiusculus flavescens; a suction predator) and lion's mane jellyfish (Cyanea capillata; a “passive" ambush predator). Ten cod larvae were observed in the presence of a predator for 20 minutes using a digital video camera. Trials were replicated 4 times for goby and 5 times for jellyfish. Escape rate (total number of escapes/total number of attacks ×100), escape distance and the number of larvae remaining at the end of the experiment were measured. In the experiment with gobies, in the UV-treated larvae, both escape rate and escape distance (36%, 38±7.5 mm respectively) were significantly lower than those of control larvae (75%, 69±4.7 mm respectively). There was a significant difference in survival as well (UV: 35%, Control: 63%). No apparent escape response was observed, and survival rate was not significantly different, between treatments (UV: 66%, Control: 74%) in the experiment with jellyfish. We conclude that the effect and impact of exposure to sub-lethal levels of UV radiation on the escape performance of cod larvae depends on the type of predator. Our results also suggest that prediction of UV impacts on fish larvae based only on direct effects are underestimations. Text atlantic cod Gadus morhua PubMed Central (PMC) PLoS ONE 7 4 e35554 |
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Research Article Fukunishi, Yuichi Browman, Howard I. Durif, Caroline M. F. Bjelland, Reidun M. Skiftesvik, Anne Berit Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua) |
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Research Article |
description |
The amount of ultraviolet (UV) radiation reaching the earth's surface has increased due to depletion of the ozone layer. Several studies have reported that UV radiation reduces survival of fish larvae. However, indirect and sub-lethal impacts of UV radiation on fish behavior have been given little consideration. We observed the escape performance of larval cod (24 dph, SL: 7.6±0.2 mm; 29 dph, SL: 8.2±0.3 mm) that had been exposed to sub-lethal levels of UV radiation vs. unexposed controls. Two predators were used (in separate experiments): two-spotted goby (Gobiusculus flavescens; a suction predator) and lion's mane jellyfish (Cyanea capillata; a “passive" ambush predator). Ten cod larvae were observed in the presence of a predator for 20 minutes using a digital video camera. Trials were replicated 4 times for goby and 5 times for jellyfish. Escape rate (total number of escapes/total number of attacks ×100), escape distance and the number of larvae remaining at the end of the experiment were measured. In the experiment with gobies, in the UV-treated larvae, both escape rate and escape distance (36%, 38±7.5 mm respectively) were significantly lower than those of control larvae (75%, 69±4.7 mm respectively). There was a significant difference in survival as well (UV: 35%, Control: 63%). No apparent escape response was observed, and survival rate was not significantly different, between treatments (UV: 66%, Control: 74%) in the experiment with jellyfish. We conclude that the effect and impact of exposure to sub-lethal levels of UV radiation on the escape performance of cod larvae depends on the type of predator. Our results also suggest that prediction of UV impacts on fish larvae based only on direct effects are underestimations. |
format |
Text |
author |
Fukunishi, Yuichi Browman, Howard I. Durif, Caroline M. F. Bjelland, Reidun M. Skiftesvik, Anne Berit |
author_facet |
Fukunishi, Yuichi Browman, Howard I. Durif, Caroline M. F. Bjelland, Reidun M. Skiftesvik, Anne Berit |
author_sort |
Fukunishi, Yuichi |
title |
Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua) |
title_short |
Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua) |
title_full |
Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua) |
title_fullStr |
Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua) |
title_full_unstemmed |
Effect of Sub-Lethal Exposure to Ultraviolet Radiation on the Escape Performance of Atlantic Cod Larvae (Gadus morhua) |
title_sort |
effect of sub-lethal exposure to ultraviolet radiation on the escape performance of atlantic cod larvae (gadus morhua) |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334909 http://www.ncbi.nlm.nih.gov/pubmed/22536406 https://doi.org/10.1371/journal.pone.0035554 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334909 http://www.ncbi.nlm.nih.gov/pubmed/22536406 http://dx.doi.org/10.1371/journal.pone.0035554 |
op_rights |
Fukunishi et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0035554 |
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PLoS ONE |
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7 |
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4 |
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e35554 |
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1766358170697990144 |