Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus)
Slimy sculpin (Cottus cognatus) are increasingly being used as indicator species. This has primarily entailed measuring their condition, the assumption being that condition can be used as a surrogate for lipid content. While there is evidence to suggest this assumption is applicable to some fish, it...
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ftmdpi:oai:mdpi.com:/1424-2818/11/5/71/ 2023-08-20T04:06:00+02:00 Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus) Adrian R. Hards Michelle A. Gray Sophia C. Noël Rick A. Cunjak agris 2019-04-29 application/pdf https://doi.org/10.3390/d11050071 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/d11050071 https://creativecommons.org/licenses/by/4.0/ Diversity; Volume 11; Issue 5; Pages: 71 Cottus cognatus Fulton’s condition factor lipid content morphometrics relative condition factor slimy sculpin Text 2019 ftmdpi https://doi.org/10.3390/d11050071 2023-07-31T22:14:08Z Slimy sculpin (Cottus cognatus) are increasingly being used as indicator species. This has primarily entailed measuring their condition, the assumption being that condition can be used as a surrogate for lipid content. While there is evidence to suggest this assumption is applicable to some fish, it has yet to be validated for C. cognatus. Further, there are several means by which one may calculate condition, the most commonly employed of which are indirect measurements of lipid content (namely, Fulton’s K, somatic K (Ks), and Le Cren’s relative condition factor (Kn)). We compared the ability of each of these morphometric indices to predict whole-body lipid content in C. cognatus. There was a moderate degree of evidence that Fulton’s K, Ks, and Kn are reliable predictors (Ks and Kn in particular). Of the latter we recommend Kn be used because, unlike Ks, it does not require that fish be killed. And while Fulton’s K did not perform quite as well, we consider it a sufficient substitute if the data necessary to calculate Kn are unavailable. Text Cottus cognatus Slimy sculpin MDPI Open Access Publishing Diversity 11 5 71 |
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collection |
MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
Cottus cognatus Fulton’s condition factor lipid content morphometrics relative condition factor slimy sculpin |
spellingShingle |
Cottus cognatus Fulton’s condition factor lipid content morphometrics relative condition factor slimy sculpin Adrian R. Hards Michelle A. Gray Sophia C. Noël Rick A. Cunjak Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus) |
topic_facet |
Cottus cognatus Fulton’s condition factor lipid content morphometrics relative condition factor slimy sculpin |
description |
Slimy sculpin (Cottus cognatus) are increasingly being used as indicator species. This has primarily entailed measuring their condition, the assumption being that condition can be used as a surrogate for lipid content. While there is evidence to suggest this assumption is applicable to some fish, it has yet to be validated for C. cognatus. Further, there are several means by which one may calculate condition, the most commonly employed of which are indirect measurements of lipid content (namely, Fulton’s K, somatic K (Ks), and Le Cren’s relative condition factor (Kn)). We compared the ability of each of these morphometric indices to predict whole-body lipid content in C. cognatus. There was a moderate degree of evidence that Fulton’s K, Ks, and Kn are reliable predictors (Ks and Kn in particular). Of the latter we recommend Kn be used because, unlike Ks, it does not require that fish be killed. And while Fulton’s K did not perform quite as well, we consider it a sufficient substitute if the data necessary to calculate Kn are unavailable. |
format |
Text |
author |
Adrian R. Hards Michelle A. Gray Sophia C. Noël Rick A. Cunjak |
author_facet |
Adrian R. Hards Michelle A. Gray Sophia C. Noël Rick A. Cunjak |
author_sort |
Adrian R. Hards |
title |
Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus) |
title_short |
Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus) |
title_full |
Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus) |
title_fullStr |
Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus) |
title_full_unstemmed |
Utility of Condition Indices as Predictors of Lipid Content in Slimy Sculpin (Cottus cognatus) |
title_sort |
utility of condition indices as predictors of lipid content in slimy sculpin (cottus cognatus) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/d11050071 |
op_coverage |
agris |
genre |
Cottus cognatus Slimy sculpin |
genre_facet |
Cottus cognatus Slimy sculpin |
op_source |
Diversity; Volume 11; Issue 5; Pages: 71 |
op_relation |
https://dx.doi.org/10.3390/d11050071 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/d11050071 |
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Diversity |
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11 |
container_issue |
5 |
container_start_page |
71 |
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1774716884122337280 |