What can size distributions within cohorts tell us about ecological processes in fish larvae?
Marine fish larvae are subject to variable environments, which is probably reflected in their growth and survival rates. Mortality rates are generally high and size-dependent. At the species level, these mortality rates are usually accompanied by correspondingly high growth rates. Here we provide ex...
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2009
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Online Access: | https://doi.org/10.3989/scimar.2009.73s1119 https://doaj.org/article/eaae05deb62946a68f55c2e476efff71 |
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ftdoajarticles:oai:doaj.org/article:eaae05deb62946a68f55c2e476efff71 2023-05-15T15:27:36+02:00 What can size distributions within cohorts tell us about ecological processes in fish larvae? Arild Folkvord Øyvind Fiksen Hans Høie Arne Johannessen Erling Otterlei Knut Wiik Vollset 2009-10-01T00:00:00Z https://doi.org/10.3989/scimar.2009.73s1119 https://doaj.org/article/eaae05deb62946a68f55c2e476efff71 EN eng Consejo Superior de Investigaciones Científicas http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1114 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2009.73s1119 https://doaj.org/article/eaae05deb62946a68f55c2e476efff71 Scientia Marina, Vol 73, Iss S1, Pp 119-130 (2009) growth strategies life history mortality prey concentration size distribution temperature trade-off Aquaculture. Fisheries. Angling SH1-691 article 2009 ftdoajarticles https://doi.org/10.3989/scimar.2009.73s1119 2022-12-31T06:35:59Z Marine fish larvae are subject to variable environments, which is probably reflected in their growth and survival rates. Mortality rates are generally high and size-dependent. At the species level, these mortality rates are usually accompanied by correspondingly high growth rates. Here we provide examples from experimental studies with Atlantic cod (Gadus morhua) and Atlantic herring (Clupea harengus) larvae, in which multiple cohorts were followed over time. Body size, prey concentrations, and temperature are shown to influence growth rates. We present a method based on cumulative size distributions (CSDs) for visualizing variability of sizes within cohorts over time. Analysis of CSDs revealed size-selective mortality and variations among populations in size- and temperature-dependent growth throughout ontogeny. We found that cod larvae consistently exhibit higher growth rates than herring larvae. While cod larvae may have an advantage over herring larvae when food availability is high, herring were more able to survive at low food concentrations than cod. Cod and herring seem to represent two growth strategies: cod larvae are relatively small at hatching and a high growth rate appears to be a prerequisite for success, whereas herring larvae are initially large, but grow more slowly. Article in Journal/Newspaper atlantic cod Gadus morhua Directory of Open Access Journals: DOAJ Articles Scientia Marina 73 S1 119 130 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
growth strategies life history mortality prey concentration size distribution temperature trade-off Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
growth strategies life history mortality prey concentration size distribution temperature trade-off Aquaculture. Fisheries. Angling SH1-691 Arild Folkvord Øyvind Fiksen Hans Høie Arne Johannessen Erling Otterlei Knut Wiik Vollset What can size distributions within cohorts tell us about ecological processes in fish larvae? |
topic_facet |
growth strategies life history mortality prey concentration size distribution temperature trade-off Aquaculture. Fisheries. Angling SH1-691 |
description |
Marine fish larvae are subject to variable environments, which is probably reflected in their growth and survival rates. Mortality rates are generally high and size-dependent. At the species level, these mortality rates are usually accompanied by correspondingly high growth rates. Here we provide examples from experimental studies with Atlantic cod (Gadus morhua) and Atlantic herring (Clupea harengus) larvae, in which multiple cohorts were followed over time. Body size, prey concentrations, and temperature are shown to influence growth rates. We present a method based on cumulative size distributions (CSDs) for visualizing variability of sizes within cohorts over time. Analysis of CSDs revealed size-selective mortality and variations among populations in size- and temperature-dependent growth throughout ontogeny. We found that cod larvae consistently exhibit higher growth rates than herring larvae. While cod larvae may have an advantage over herring larvae when food availability is high, herring were more able to survive at low food concentrations than cod. Cod and herring seem to represent two growth strategies: cod larvae are relatively small at hatching and a high growth rate appears to be a prerequisite for success, whereas herring larvae are initially large, but grow more slowly. |
format |
Article in Journal/Newspaper |
author |
Arild Folkvord Øyvind Fiksen Hans Høie Arne Johannessen Erling Otterlei Knut Wiik Vollset |
author_facet |
Arild Folkvord Øyvind Fiksen Hans Høie Arne Johannessen Erling Otterlei Knut Wiik Vollset |
author_sort |
Arild Folkvord |
title |
What can size distributions within cohorts tell us about ecological processes in fish larvae? |
title_short |
What can size distributions within cohorts tell us about ecological processes in fish larvae? |
title_full |
What can size distributions within cohorts tell us about ecological processes in fish larvae? |
title_fullStr |
What can size distributions within cohorts tell us about ecological processes in fish larvae? |
title_full_unstemmed |
What can size distributions within cohorts tell us about ecological processes in fish larvae? |
title_sort |
what can size distributions within cohorts tell us about ecological processes in fish larvae? |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
2009 |
url |
https://doi.org/10.3989/scimar.2009.73s1119 https://doaj.org/article/eaae05deb62946a68f55c2e476efff71 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Scientia Marina, Vol 73, Iss S1, Pp 119-130 (2009) |
op_relation |
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1114 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2009.73s1119 https://doaj.org/article/eaae05deb62946a68f55c2e476efff71 |
op_doi |
https://doi.org/10.3989/scimar.2009.73s1119 |
container_title |
Scientia Marina |
container_volume |
73 |
container_issue |
S1 |
container_start_page |
119 |
op_container_end_page |
130 |
_version_ |
1766358018006450176 |