Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability
Organic enrichment from fish farming may impact benthic species and habitats in adjacent areas. Norwegian salmon farming is continuously growing, but, due to area conflicts and severe sea-lice problems in the western areas, growth of the industry is focused in the northern areas. Knowledge is scarce...
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ftdoajarticles:oai:doaj.org/article:5cc03c2f99404b119a6d33f81b66ccd1 2023-08-20T04:04:55+02:00 Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability ES Grefsrud DCZ Arendse S Meier SA Olsen S Andersen 2023-06-01T00:00:00Z https://doi.org/10.3354/aei00460 https://doaj.org/article/5cc03c2f99404b119a6d33f81b66ccd1 EN eng Inter-Research https://www.int-res.com/abstracts/aei/v15/p195-213/ https://doaj.org/toc/1869-215X https://doaj.org/toc/1869-7534 1869-215X 1869-7534 doi:10.3354/aei00460 https://doaj.org/article/5cc03c2f99404b119a6d33f81b66ccd1 Aquaculture Environment Interactions, Vol 15, Pp 195-213 (2023) Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 article 2023 ftdoajarticles https://doi.org/10.3354/aei00460 2023-07-30T00:39:03Z Organic enrichment from fish farming may impact benthic species and habitats in adjacent areas. Norwegian salmon farming is continuously growing, but, due to area conflicts and severe sea-lice problems in the western areas, growth of the industry is focused in the northern areas. Knowledge is scarce on how an increase in fish farming will impact Arctic and subarctic species and habitats. One such species is the Iceland scallop Chlamys islandica, distributed from the Lofoten Islands in Nordland County to the Varangerfjord in Troms and Finnmark County. To study the impact of fine-particle fish faeces on feeding and reproductive ability in adult Iceland scallop, particles <41 µm of finfish waste were added to the diet. Effects were tested via short-term (weeks) feeding studies using 2 diets, 100% cultured algal species and a 50% mix of algae and fish waste. In addition, a 100% fish waste diet was used to study longer-term effects on reproductive ability (months). Feeding (% particle clearance and feeding rate) on the microalgae diet tended to be higher than that on the diet containing fish waste, but the difference was significant only in 2 out of 4 cases. We did not find any effect of diets on reproductive ability (gonad development and fatty acid profiles) of scallops. Lack of knowledge on sufficient food levels for gonad maturation in this species may have affected the results. We suggest that future work includes the transplant of scallops from a reference site to fish production sites and that investigations begin immediately after spawning early in scallop gonad development. Article in Journal/Newspaper Arctic Finnmark Iceland Lofoten Nordland Nordland Subarctic Varangerfjord Varangerfjord* Finnmark Nordland Troms Directory of Open Access Journals: DOAJ Articles Arctic Lofoten Aquaculture Environment Interactions 15 195 213 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 |
spellingShingle |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 ES Grefsrud DCZ Arendse S Meier SA Olsen S Andersen Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability |
topic_facet |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 |
description |
Organic enrichment from fish farming may impact benthic species and habitats in adjacent areas. Norwegian salmon farming is continuously growing, but, due to area conflicts and severe sea-lice problems in the western areas, growth of the industry is focused in the northern areas. Knowledge is scarce on how an increase in fish farming will impact Arctic and subarctic species and habitats. One such species is the Iceland scallop Chlamys islandica, distributed from the Lofoten Islands in Nordland County to the Varangerfjord in Troms and Finnmark County. To study the impact of fine-particle fish faeces on feeding and reproductive ability in adult Iceland scallop, particles <41 µm of finfish waste were added to the diet. Effects were tested via short-term (weeks) feeding studies using 2 diets, 100% cultured algal species and a 50% mix of algae and fish waste. In addition, a 100% fish waste diet was used to study longer-term effects on reproductive ability (months). Feeding (% particle clearance and feeding rate) on the microalgae diet tended to be higher than that on the diet containing fish waste, but the difference was significant only in 2 out of 4 cases. We did not find any effect of diets on reproductive ability (gonad development and fatty acid profiles) of scallops. Lack of knowledge on sufficient food levels for gonad maturation in this species may have affected the results. We suggest that future work includes the transplant of scallops from a reference site to fish production sites and that investigations begin immediately after spawning early in scallop gonad development. |
format |
Article in Journal/Newspaper |
author |
ES Grefsrud DCZ Arendse S Meier SA Olsen S Andersen |
author_facet |
ES Grefsrud DCZ Arendse S Meier SA Olsen S Andersen |
author_sort |
ES Grefsrud |
title |
Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability |
title_short |
Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability |
title_full |
Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability |
title_fullStr |
Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability |
title_full_unstemmed |
Adding fish waste to the diet of Iceland scallop Chlamys islandica: effects on feeding and reproductive ability |
title_sort |
adding fish waste to the diet of iceland scallop chlamys islandica: effects on feeding and reproductive ability |
publisher |
Inter-Research |
publishDate |
2023 |
url |
https://doi.org/10.3354/aei00460 https://doaj.org/article/5cc03c2f99404b119a6d33f81b66ccd1 |
geographic |
Arctic Lofoten |
geographic_facet |
Arctic Lofoten |
genre |
Arctic Finnmark Iceland Lofoten Nordland Nordland Subarctic Varangerfjord Varangerfjord* Finnmark Nordland Troms |
genre_facet |
Arctic Finnmark Iceland Lofoten Nordland Nordland Subarctic Varangerfjord Varangerfjord* Finnmark Nordland Troms |
op_source |
Aquaculture Environment Interactions, Vol 15, Pp 195-213 (2023) |
op_relation |
https://www.int-res.com/abstracts/aei/v15/p195-213/ https://doaj.org/toc/1869-215X https://doaj.org/toc/1869-7534 1869-215X 1869-7534 doi:10.3354/aei00460 https://doaj.org/article/5cc03c2f99404b119a6d33f81b66ccd1 |
op_doi |
https://doi.org/10.3354/aei00460 |
container_title |
Aquaculture Environment Interactions |
container_volume |
15 |
container_start_page |
195 |
op_container_end_page |
213 |
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1774715333763923968 |