Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites
A new species of dorvilleid polychaete, Ophryotrocha cyclops , has been observed on the rocky seafloor underneath deep salmonid aquaculture sites on the south coast of Newfoundland, Canada. The distribution of these opportunistic worms is likely related to organic matter accumulation on the seafloor...
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Online Access: | http://dx.doi.org/10.1017/s0025315414002070 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315414002070 |
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crcambridgeupr:10.1017/s0025315414002070 2024-03-03T08:46:45+00:00 Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites Salvo, Flora Hamoutene, Dounia Dufour, Suzanne C. 2015 http://dx.doi.org/10.1017/s0025315414002070 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315414002070 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 95, issue 4, page 713-722 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2015 crcambridgeupr https://doi.org/10.1017/s0025315414002070 2024-02-08T08:47:56Z A new species of dorvilleid polychaete, Ophryotrocha cyclops , has been observed on the rocky seafloor underneath deep salmonid aquaculture sites on the south coast of Newfoundland, Canada. The distribution of these opportunistic worms is likely related to organic matter accumulation on the seafloor, and this species may have a role in remediation processes. To better understand the functional role of O. cyclops at aquaculture sites, it is important to know what they feed upon. Here, stable isotope analyses (δ 13 C, δ 15 N and δ 34 S) and trace element analyses were performed on dorvilleids and their potential food sources at three aquaculture sites. Stable isotope analyses revealed spatial and temporal variation in the isotopic carbon signature of O. cyclops , highlighting possible differences in the food sources of individual dorvilleids within and between sites. The isotopic composition of dorvilleids was closest to that of fish pellets; the presence of abundant lipid droplets in gut epithelial cells of O. cyclops suggests the assimilation of fish pellet-derived lipids. Trace element analysis indicated that O. cyclops does not concentrate the aquaculture tracers Zn or Cu to a large extent. However, concentrations of sulphur were high in O. cyclops compared with other sources. Taken together, results show that O. cyclops most likely consume both fish pellets and flocculent matter-associated bacteria. As such, they are involved in sulphur cycling and fish pellet degradation at aquaculture sites. Article in Journal/Newspaper Newfoundland Cambridge University Press Canada Journal of the Marine Biological Association of the United Kingdom 95 4 713 722 |
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Cambridge University Press |
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crcambridgeupr |
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English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Salvo, Flora Hamoutene, Dounia Dufour, Suzanne C. Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites |
topic_facet |
Aquatic Science |
description |
A new species of dorvilleid polychaete, Ophryotrocha cyclops , has been observed on the rocky seafloor underneath deep salmonid aquaculture sites on the south coast of Newfoundland, Canada. The distribution of these opportunistic worms is likely related to organic matter accumulation on the seafloor, and this species may have a role in remediation processes. To better understand the functional role of O. cyclops at aquaculture sites, it is important to know what they feed upon. Here, stable isotope analyses (δ 13 C, δ 15 N and δ 34 S) and trace element analyses were performed on dorvilleids and their potential food sources at three aquaculture sites. Stable isotope analyses revealed spatial and temporal variation in the isotopic carbon signature of O. cyclops , highlighting possible differences in the food sources of individual dorvilleids within and between sites. The isotopic composition of dorvilleids was closest to that of fish pellets; the presence of abundant lipid droplets in gut epithelial cells of O. cyclops suggests the assimilation of fish pellet-derived lipids. Trace element analysis indicated that O. cyclops does not concentrate the aquaculture tracers Zn or Cu to a large extent. However, concentrations of sulphur were high in O. cyclops compared with other sources. Taken together, results show that O. cyclops most likely consume both fish pellets and flocculent matter-associated bacteria. As such, they are involved in sulphur cycling and fish pellet degradation at aquaculture sites. |
format |
Article in Journal/Newspaper |
author |
Salvo, Flora Hamoutene, Dounia Dufour, Suzanne C. |
author_facet |
Salvo, Flora Hamoutene, Dounia Dufour, Suzanne C. |
author_sort |
Salvo, Flora |
title |
Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites |
title_short |
Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites |
title_full |
Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites |
title_fullStr |
Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites |
title_full_unstemmed |
Trophic analyses of opportunistic polychaetes ( Ophryotrocha cyclops ) at salmonid aquaculture sites |
title_sort |
trophic analyses of opportunistic polychaetes ( ophryotrocha cyclops ) at salmonid aquaculture sites |
publisher |
Cambridge University Press (CUP) |
publishDate |
2015 |
url |
http://dx.doi.org/10.1017/s0025315414002070 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315414002070 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 95, issue 4, page 713-722 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315414002070 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
95 |
container_issue |
4 |
container_start_page |
713 |
op_container_end_page |
722 |
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1792502792854700032 |