Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus
Predators can induce changes in the diel activity patterns of marine copepods. Besides vertical migration, diel feeding rhythms have been suggested as an antipredator phenotypic response. We conducted experiments to assess the non-lethal direct effects of the predator Meganyctiphanes norvegica (nort...
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ftpubmed:oai:pubmedcentral.nih.gov:7677931 2023-05-15T17:10:41+02:00 Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus Olivares, Manuel Tiselius, Peter Calbet, Albert Saiz, Enric 2020-11-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7677931/ http://www.ncbi.nlm.nih.gov/pubmed/33239966 https://doi.org/10.1093/plankt/fbaa051 en eng Oxford University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7677931/ http://www.ncbi.nlm.nih.gov/pubmed/33239966 http://dx.doi.org/10.1093/plankt/fbaa051 © The Author(s) 2020. Published by Oxford University Press. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY J Plankton Res Original Article Text 2020 ftpubmed https://doi.org/10.1093/plankt/fbaa051 2020-11-29T01:26:20Z Predators can induce changes in the diel activity patterns of marine copepods. Besides vertical migration, diel feeding rhythms have been suggested as an antipredator phenotypic response. We conducted experiments to assess the non-lethal direct effects of the predator Meganyctiphanes norvegica (northern krill) on the diel feeding patterns of the calanoid copepod Centropages typicus. We also analysed the influence of seasonal photoperiod and prey availability on the intensity of copepod feeding rhythms. We did not detect any large effect of krill presence on the diel feeding behaviour of copepods, either in day-night differences or total daily ingestions. Seasonal photoperiod and prey availability, however, significantly affected the magnitude of copepod feeding cycles, with larger diel differences in shorter days and at lower prey concentrations. Therefore, the role of non-lethal direct effects of predators on the diel feeding activity of marine copepods remain debatable and might not be as relevant as in freshwater zooplankton. Text Meganyctiphanes norvegica Northern krill Copepods PubMed Central (PMC) Journal of Plankton Research |
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Original Article Olivares, Manuel Tiselius, Peter Calbet, Albert Saiz, Enric Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus |
topic_facet |
Original Article |
description |
Predators can induce changes in the diel activity patterns of marine copepods. Besides vertical migration, diel feeding rhythms have been suggested as an antipredator phenotypic response. We conducted experiments to assess the non-lethal direct effects of the predator Meganyctiphanes norvegica (northern krill) on the diel feeding patterns of the calanoid copepod Centropages typicus. We also analysed the influence of seasonal photoperiod and prey availability on the intensity of copepod feeding rhythms. We did not detect any large effect of krill presence on the diel feeding behaviour of copepods, either in day-night differences or total daily ingestions. Seasonal photoperiod and prey availability, however, significantly affected the magnitude of copepod feeding cycles, with larger diel differences in shorter days and at lower prey concentrations. Therefore, the role of non-lethal direct effects of predators on the diel feeding activity of marine copepods remain debatable and might not be as relevant as in freshwater zooplankton. |
format |
Text |
author |
Olivares, Manuel Tiselius, Peter Calbet, Albert Saiz, Enric |
author_facet |
Olivares, Manuel Tiselius, Peter Calbet, Albert Saiz, Enric |
author_sort |
Olivares, Manuel |
title |
Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus |
title_short |
Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus |
title_full |
Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus |
title_fullStr |
Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus |
title_full_unstemmed |
Non-lethal effects of the predator Meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod Centropages typicus |
title_sort |
non-lethal effects of the predator meganyctiphanes norvegica and influence of seasonal photoperiod and food availability on the diel feeding behaviour of the copepod centropages typicus |
publisher |
Oxford University Press |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7677931/ http://www.ncbi.nlm.nih.gov/pubmed/33239966 https://doi.org/10.1093/plankt/fbaa051 |
genre |
Meganyctiphanes norvegica Northern krill Copepods |
genre_facet |
Meganyctiphanes norvegica Northern krill Copepods |
op_source |
J Plankton Res |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7677931/ http://www.ncbi.nlm.nih.gov/pubmed/33239966 http://dx.doi.org/10.1093/plankt/fbaa051 |
op_rights |
© The Author(s) 2020. Published by Oxford University Press. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1093/plankt/fbaa051 |
container_title |
Journal of Plankton Research |
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1766067318128902144 |