Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal Concentrations
Juvenile scallops of Pecten maximus were studied to see the capability to clear out and incorporate salmon feed and feces (30 μg L-1). Algae were also given, in a low and high concentration in addition to feed and feces, to mimic a winter and summer situation in Norwegian waters. Rhodomonas baltica...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-01-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmars.2018.00524/full |
| _version_ | 1819315437427490816 |
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| author | Maria Bergvik Lene Stensås Aleksander Handå Kjell Inge Reitan Øivind Strand Yngvar Olsen |
| author_facet | Maria Bergvik Lene Stensås Aleksander Handå Kjell Inge Reitan Øivind Strand Yngvar Olsen |
| author_sort | Maria Bergvik |
| collection | DOAJ |
| description | Juvenile scallops of Pecten maximus were studied to see the capability to clear out and incorporate salmon feed and feces (30 μg L-1). Algae were also given, in a low and high concentration in addition to feed and feces, to mimic a winter and summer situation in Norwegian waters. Rhodomonas baltica and Chaetoseris muelleri were provided in a concentration of 50 μg L-1 and 300 μg L-1. The feeding trial lasted for 27 days. Clearance rate was measured to study filtration characteristics, while fatty acid profiling and stable isotopes of nitrogen and carbon were used to trace the uptake of salmon feed and feces in the digestive gland and muscle of juvenile scallops (30–35 mm shell height). The results show that the scallops could clear out and retain both salmon feed and feces particles, although at a statistically lower clearance rate than the algae. Fatty acid profiling revealed that the scallops assimilated and incorporated the consumed salmon feed and feces, given with either high or low algae concentrations, in their tissues, where the fatty acid C18:1n9 was used as a tracer fatty acid. The digestive gland of the scallops that were fed salmon feed and feces contained a higher share of C18:1n9 than those that were only fed algae. The digestive gland reflected the fatty acid composition of the diet, while the fatty acid composition of the muscle, which also changed, reflected a more complex relation between diet and metabolic processes in the tissue. The use of stable isotopes of carbon and nitrogen to trace food sources was inconclusive in this study due to low differences between samples fed different feeds. Fatty acid profiling was a more sensitive method for tracing low concentrations of salmon feed and feces in the algae diet of scallops. Our results suggest that P. maximus could be a candidate for integrated multitrophic aquaculture (IMTA) and that scallops have the potential to utilize small particles of wasted salmon feed and feces during a winter situation with low phytoplankton concentration and during an algal bloom in Norwegian waters. |
| first_indexed | 2024-12-24T10:00:06Z |
| format | Article |
| id | doaj.art-1105bfd4bbe147769f932700c4fc6479 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-12-24T10:00:06Z |
| publishDate | 2019-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-1105bfd4bbe147769f932700c4fc64792022-12-21T17:01:08ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452019-01-01510.3389/fmars.2018.00524430392Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal ConcentrationsMaria Bergvik0Lene Stensås1Aleksander Handå2Kjell Inge Reitan3Øivind Strand4Yngvar Olsen5Department of Biology, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Biology, Norwegian University of Science and Technology, Trondheim, NorwayEnvironment and New Resources, SINTEF Ocean, Trondheim, NorwayDepartment of Biology, Norwegian University of Science and Technology, Trondheim, NorwayInstitute of Marine Research, Bergen, NorwayDepartment of Biology, Norwegian University of Science and Technology, Trondheim, NorwayJuvenile scallops of Pecten maximus were studied to see the capability to clear out and incorporate salmon feed and feces (30 μg L-1). Algae were also given, in a low and high concentration in addition to feed and feces, to mimic a winter and summer situation in Norwegian waters. Rhodomonas baltica and Chaetoseris muelleri were provided in a concentration of 50 μg L-1 and 300 μg L-1. The feeding trial lasted for 27 days. Clearance rate was measured to study filtration characteristics, while fatty acid profiling and stable isotopes of nitrogen and carbon were used to trace the uptake of salmon feed and feces in the digestive gland and muscle of juvenile scallops (30–35 mm shell height). The results show that the scallops could clear out and retain both salmon feed and feces particles, although at a statistically lower clearance rate than the algae. Fatty acid profiling revealed that the scallops assimilated and incorporated the consumed salmon feed and feces, given with either high or low algae concentrations, in their tissues, where the fatty acid C18:1n9 was used as a tracer fatty acid. The digestive gland of the scallops that were fed salmon feed and feces contained a higher share of C18:1n9 than those that were only fed algae. The digestive gland reflected the fatty acid composition of the diet, while the fatty acid composition of the muscle, which also changed, reflected a more complex relation between diet and metabolic processes in the tissue. The use of stable isotopes of carbon and nitrogen to trace food sources was inconclusive in this study due to low differences between samples fed different feeds. Fatty acid profiling was a more sensitive method for tracing low concentrations of salmon feed and feces in the algae diet of scallops. Our results suggest that P. maximus could be a candidate for integrated multitrophic aquaculture (IMTA) and that scallops have the potential to utilize small particles of wasted salmon feed and feces during a winter situation with low phytoplankton concentration and during an algal bloom in Norwegian waters.https://www.frontiersin.org/article/10.3389/fmars.2018.00524/fullscallopsPecten maximussalmon wasteIMTAfatty acid profilingstable isotopes |
| spellingShingle | Maria Bergvik Lene Stensås Aleksander Handå Kjell Inge Reitan Øivind Strand Yngvar Olsen Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal Concentrations Frontiers in Marine Science scallops Pecten maximus salmon waste IMTA fatty acid profiling stable isotopes |
| title | Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal Concentrations |
| title_full | Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal Concentrations |
| title_fullStr | Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal Concentrations |
| title_full_unstemmed | Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal Concentrations |
| title_short | Incorporation of Feed and Fecal Waste From Salmon Aquaculture in Great Scallops (Pecten maximus) Co-fed by Different Algal Concentrations |
| title_sort | incorporation of feed and fecal waste from salmon aquaculture in great scallops pecten maximus co fed by different algal concentrations |
| topic | scallops Pecten maximus salmon waste IMTA fatty acid profiling stable isotopes |
| url | https://www.frontiersin.org/article/10.3389/fmars.2018.00524/full |
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