Impacts of Intraguild Predation on Arctic Copepod Communities
Communities of large copepods form an essential hub of matter and energy fluxes in Arctic marine food webs. Intraguild predation on eggs and early larval stages occurs among the different species of those communities and it has been hypothesized to impact its structure and function. In order to bett...
Published in: | Frontiers in Marine Science |
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ftinsu:oai:HAL:hal-01410039v1 2023-12-31T09:58:50+01:00 Impacts of Intraguild Predation on Arctic Copepod Communities Dufour, Karolane Maps, Frederic Plourde, Stéphane Joly, Pierre Cyr, Frederic Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) 2016-07-31 https://hal.science/hal-01410039 https://hal.science/hal-01410039/document https://hal.science/hal-01410039/file/fmars-03-00185.pdf https://doi.org/10.3389/fmars.2016.00185 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2016.00185 hal-01410039 https://hal.science/hal-01410039 https://hal.science/hal-01410039/document https://hal.science/hal-01410039/file/fmars-03-00185.pdf doi:10.3389/fmars.2016.00185 http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-01410039 Frontiers in Marine Science, 2016, 3 (5), pp.10.3389/fmars.2016.00185. ⟨10.3389/fmars.2016.00185⟩ intraguild predation copepods Metridia longa Calanus hyperboreus Arctic regions numerical modeling [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2016 ftinsu https://doi.org/10.3389/fmars.2016.00185 2023-12-06T17:25:46Z Communities of large copepods form an essential hub of matter and energy fluxes in Arctic marine food webs. Intraguild predation on eggs and early larval stages occurs among the different species of those communities and it has been hypothesized to impact its structure and function. In order to better understand the interactions between dominant copepod species in the Arctic, we conducted laboratory experiments that quantified intraguild predation between the conspicuous and omnivorous Metridia longa and the dominant Calanus hyperboreus. We recorded individual egg ingestion rates for several conditions of temperature, egg concentration, and alternative food presence. In each of these experiments, at least some females ingested eggs but individual ingestion rates were highly variable. The global mean ingestion rate of M. longa on C. hyperboreus eggs was 5.8 eggs ind−1 d−1, or an estimated 37% of M. longa daily metabolic need. Among the different factors tested and the various individual traits considered (prosome length, condition index), only the egg concentration had a significant and positive effect on ingestion rates. We further explored the potential ecological impacts of intraguild predation in a simple 1D numerical model of C. hyperboreus eggs vertical distribution in the Amundsen Gulf. Our modeling results showed an asymmetric relationship in that M. longa has little potential impact on the recruitment of C. hyperboreus (<3% egg standing stock removed by IGP at most) whereas the eggs intercepted by the former can account for a significant portion of its metabolic requirement during winter (up to a third). Article in Journal/Newspaper Amundsen Gulf Arctic copepod Arctic Calanus hyperboreus Copepods Institut national des sciences de l'Univers: HAL-INSU Frontiers in Marine Science 3 |
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Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
intraguild predation copepods Metridia longa Calanus hyperboreus Arctic regions numerical modeling [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
intraguild predation copepods Metridia longa Calanus hyperboreus Arctic regions numerical modeling [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Dufour, Karolane Maps, Frederic Plourde, Stéphane Joly, Pierre Cyr, Frederic Impacts of Intraguild Predation on Arctic Copepod Communities |
topic_facet |
intraguild predation copepods Metridia longa Calanus hyperboreus Arctic regions numerical modeling [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
Communities of large copepods form an essential hub of matter and energy fluxes in Arctic marine food webs. Intraguild predation on eggs and early larval stages occurs among the different species of those communities and it has been hypothesized to impact its structure and function. In order to better understand the interactions between dominant copepod species in the Arctic, we conducted laboratory experiments that quantified intraguild predation between the conspicuous and omnivorous Metridia longa and the dominant Calanus hyperboreus. We recorded individual egg ingestion rates for several conditions of temperature, egg concentration, and alternative food presence. In each of these experiments, at least some females ingested eggs but individual ingestion rates were highly variable. The global mean ingestion rate of M. longa on C. hyperboreus eggs was 5.8 eggs ind−1 d−1, or an estimated 37% of M. longa daily metabolic need. Among the different factors tested and the various individual traits considered (prosome length, condition index), only the egg concentration had a significant and positive effect on ingestion rates. We further explored the potential ecological impacts of intraguild predation in a simple 1D numerical model of C. hyperboreus eggs vertical distribution in the Amundsen Gulf. Our modeling results showed an asymmetric relationship in that M. longa has little potential impact on the recruitment of C. hyperboreus (<3% egg standing stock removed by IGP at most) whereas the eggs intercepted by the former can account for a significant portion of its metabolic requirement during winter (up to a third). |
author2 |
Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Dufour, Karolane Maps, Frederic Plourde, Stéphane Joly, Pierre Cyr, Frederic |
author_facet |
Dufour, Karolane Maps, Frederic Plourde, Stéphane Joly, Pierre Cyr, Frederic |
author_sort |
Dufour, Karolane |
title |
Impacts of Intraguild Predation on Arctic Copepod Communities |
title_short |
Impacts of Intraguild Predation on Arctic Copepod Communities |
title_full |
Impacts of Intraguild Predation on Arctic Copepod Communities |
title_fullStr |
Impacts of Intraguild Predation on Arctic Copepod Communities |
title_full_unstemmed |
Impacts of Intraguild Predation on Arctic Copepod Communities |
title_sort |
impacts of intraguild predation on arctic copepod communities |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01410039 https://hal.science/hal-01410039/document https://hal.science/hal-01410039/file/fmars-03-00185.pdf https://doi.org/10.3389/fmars.2016.00185 |
genre |
Amundsen Gulf Arctic copepod Arctic Calanus hyperboreus Copepods |
genre_facet |
Amundsen Gulf Arctic copepod Arctic Calanus hyperboreus Copepods |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-01410039 Frontiers in Marine Science, 2016, 3 (5), pp.10.3389/fmars.2016.00185. ⟨10.3389/fmars.2016.00185⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2016.00185 hal-01410039 https://hal.science/hal-01410039 https://hal.science/hal-01410039/document https://hal.science/hal-01410039/file/fmars-03-00185.pdf doi:10.3389/fmars.2016.00185 |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmars.2016.00185 |
container_title |
Frontiers in Marine Science |
container_volume |
3 |
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1786806260810645504 |