Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments
Many recent studies in larval fish ecology measure larval nutritional condition (e.g., RNA/DNA ratios), with the ultimate goal of assessing future survival probabilities. Larvae of intermediate or poor condition are generally considered to be more vulnerable to predators than larvae in good conditio...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1998
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ftunivpugetsound:oai:soundideas.pugetsound.edu:faculty_pubs-3800 2023-05-15T16:19:07+02:00 Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments Elliott, Joel K. Leggett, William C. 1998-03-01T08:00:00Z https://soundideas.pugetsound.edu/faculty_pubs/2793 https://doi.org/10.1139/cjfas-55-3-626 unknown Sound Ideas https://soundideas.pugetsound.edu/faculty_pubs/2793 http://dx.doi.org/10.1139/cjfas-55-3-626 All Faculty Scholarship capelin mallotus-villosus marine fish larvae haddock melanogrammus-aeglefinus cod gadus-morhua body-size growth rna enclosures starvation hypothesis fisheries marine & freshwater biology text 1998 ftunivpugetsound https://doi.org/10.1139/cjfas-55-3-626 2022-07-27T18:32:38Z Many recent studies in larval fish ecology measure larval nutritional condition (e.g., RNA/DNA ratios), with the ultimate goal of assessing future survival probabilities. Larvae of intermediate or poor condition are generally considered to be more vulnerable to predators than larvae in good condition. The objective of our study was to experimentally test whether larvae in poor condition have lower relative survival rates when exposed to a predator. We conducted mixed-prey experiments with larval capelin (Mallotus villosus) on days 6, 8, and 10 posthatching by putting 75 fed and 75 starved larvae in 38-L containers with (treatments) and without (controls) predators (juvenile lumpfish, Cyclopterus lumpus). There were no significant differences in the mean condition (RNA/DNA ratios) or dry weights of larvae recovered from controls and treatments. These results suggest that RNA/DNA ratios are not useful indicators of vulnerability to predation for larval capelin. Text Gadus morhua University of Puget Sound: Sound Ideas Canadian Journal of Fisheries and Aquatic Sciences 55 3 626 630 |
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Open Polar |
collection |
University of Puget Sound: Sound Ideas |
op_collection_id |
ftunivpugetsound |
language |
unknown |
topic |
capelin mallotus-villosus marine fish larvae haddock melanogrammus-aeglefinus cod gadus-morhua body-size growth rna enclosures starvation hypothesis fisheries marine & freshwater biology |
spellingShingle |
capelin mallotus-villosus marine fish larvae haddock melanogrammus-aeglefinus cod gadus-morhua body-size growth rna enclosures starvation hypothesis fisheries marine & freshwater biology Elliott, Joel K. Leggett, William C. Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments |
topic_facet |
capelin mallotus-villosus marine fish larvae haddock melanogrammus-aeglefinus cod gadus-morhua body-size growth rna enclosures starvation hypothesis fisheries marine & freshwater biology |
description |
Many recent studies in larval fish ecology measure larval nutritional condition (e.g., RNA/DNA ratios), with the ultimate goal of assessing future survival probabilities. Larvae of intermediate or poor condition are generally considered to be more vulnerable to predators than larvae in good condition. The objective of our study was to experimentally test whether larvae in poor condition have lower relative survival rates when exposed to a predator. We conducted mixed-prey experiments with larval capelin (Mallotus villosus) on days 6, 8, and 10 posthatching by putting 75 fed and 75 starved larvae in 38-L containers with (treatments) and without (controls) predators (juvenile lumpfish, Cyclopterus lumpus). There were no significant differences in the mean condition (RNA/DNA ratios) or dry weights of larvae recovered from controls and treatments. These results suggest that RNA/DNA ratios are not useful indicators of vulnerability to predation for larval capelin. |
format |
Text |
author |
Elliott, Joel K. Leggett, William C. |
author_facet |
Elliott, Joel K. Leggett, William C. |
author_sort |
Elliott, Joel K. |
title |
Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments |
title_short |
Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments |
title_full |
Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments |
title_fullStr |
Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments |
title_full_unstemmed |
Larval Condition And Vulnerability To Predation: An Analysis Based On Mixed-prey Experiments |
title_sort |
larval condition and vulnerability to predation: an analysis based on mixed-prey experiments |
publisher |
Sound Ideas |
publishDate |
1998 |
url |
https://soundideas.pugetsound.edu/faculty_pubs/2793 https://doi.org/10.1139/cjfas-55-3-626 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
All Faculty Scholarship |
op_relation |
https://soundideas.pugetsound.edu/faculty_pubs/2793 http://dx.doi.org/10.1139/cjfas-55-3-626 |
op_doi |
https://doi.org/10.1139/cjfas-55-3-626 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
55 |
container_issue |
3 |
container_start_page |
626 |
op_container_end_page |
630 |
_version_ |
1766005438853152768 |