Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages
The lumpfish (Cyclopterus lumpus) is a highly opportunistic cleaner fish used as a biological control in Atlantic salmon sea cages for an economically important ectoparasite, the salmon louse (Lepeophtherius salmonis). The objective of my research was to determine the relationship between lumpfish s...
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University of Guelph
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ftunivguelph:oai:atrium.lib.uoguelph.ca:10214/25785 2024-06-23T07:51:23+00:00 Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages Roy, Jessica Boulding, Elizabeth 2021-04-28 application/pdf https://hdl.handle.net/10214/25785 en eng University of Guelph https://hdl.handle.net/10214/25785 All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. lumpfish cleaner fish morphological diet sea cages salmon Newfoundland Canadian aquaculture salmon lice sea lice Thesis 2021 ftunivguelph 2024-05-29T00:01:31Z The lumpfish (Cyclopterus lumpus) is a highly opportunistic cleaner fish used as a biological control in Atlantic salmon sea cages for an economically important ectoparasite, the salmon louse (Lepeophtherius salmonis). The objective of my research was to determine the relationship between lumpfish size and whole diet composition to assess which sizes of lumpfish would be more likely to consume salmon lice. Principal component analysis of morphologically-identified gut contents showed that PC3 was a contrast of salmon pellets and diurnally-migrating krill. MANCOVA found a significant relationship between PC3 scores and two covariates: body and stomach weight. In conclusion, larger lumpfish (>150g) with fuller stomachs consumed more salmon pellets, and fewer free-living invertebrates. My work suggests large lumpfish >150g may not be suitable as biological controls in salmonid aquaculture because of their preference for pellets being fed to the salmon over natural crustacean prey. Natural Sciences and Engineering Research Council of Canada Cooke Aquaculture Inc. Mitacs 2022-04-28 Thesis Atlantic salmon Newfoundland University of Guelph: DSpace digital archive Canada Fuller ENVELOPE(162.350,162.350,-77.867,-77.867) |
institution |
Open Polar |
collection |
University of Guelph: DSpace digital archive |
op_collection_id |
ftunivguelph |
language |
English |
topic |
lumpfish cleaner fish morphological diet sea cages salmon Newfoundland Canadian aquaculture salmon lice sea lice |
spellingShingle |
lumpfish cleaner fish morphological diet sea cages salmon Newfoundland Canadian aquaculture salmon lice sea lice Roy, Jessica Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages |
topic_facet |
lumpfish cleaner fish morphological diet sea cages salmon Newfoundland Canadian aquaculture salmon lice sea lice |
description |
The lumpfish (Cyclopterus lumpus) is a highly opportunistic cleaner fish used as a biological control in Atlantic salmon sea cages for an economically important ectoparasite, the salmon louse (Lepeophtherius salmonis). The objective of my research was to determine the relationship between lumpfish size and whole diet composition to assess which sizes of lumpfish would be more likely to consume salmon lice. Principal component analysis of morphologically-identified gut contents showed that PC3 was a contrast of salmon pellets and diurnally-migrating krill. MANCOVA found a significant relationship between PC3 scores and two covariates: body and stomach weight. In conclusion, larger lumpfish (>150g) with fuller stomachs consumed more salmon pellets, and fewer free-living invertebrates. My work suggests large lumpfish >150g may not be suitable as biological controls in salmonid aquaculture because of their preference for pellets being fed to the salmon over natural crustacean prey. Natural Sciences and Engineering Research Council of Canada Cooke Aquaculture Inc. Mitacs 2022-04-28 |
author2 |
Boulding, Elizabeth |
format |
Thesis |
author |
Roy, Jessica |
author_facet |
Roy, Jessica |
author_sort |
Roy, Jessica |
title |
Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages |
title_short |
Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages |
title_full |
Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages |
title_fullStr |
Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages |
title_full_unstemmed |
Morphological diet analysis of the lumpfish (Cyclopterus lumpus): a cleaner fish inside Newfoundland salmon sea cages |
title_sort |
morphological diet analysis of the lumpfish (cyclopterus lumpus): a cleaner fish inside newfoundland salmon sea cages |
publisher |
University of Guelph |
publishDate |
2021 |
url |
https://hdl.handle.net/10214/25785 |
long_lat |
ENVELOPE(162.350,162.350,-77.867,-77.867) |
geographic |
Canada Fuller |
geographic_facet |
Canada Fuller |
genre |
Atlantic salmon Newfoundland |
genre_facet |
Atlantic salmon Newfoundland |
op_relation |
https://hdl.handle.net/10214/25785 |
op_rights |
All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. |
_version_ |
1802642464549371904 |