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...
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ftdoajarticles:oai:doaj.org/article:851f977ea19144c19fb03f7a9b002ea1 2023-05-15T13:22:56+02:00 Impacts of intraguild predation on Arctic copepod communities Karolane Dufour Frédéric Maps Stéphane Plourde Pierre Joly Frédéric Cyr 2016-09-01T00:00:00Z https://doi.org/10.3389/fmars.2016.00185 https://doaj.org/article/851f977ea19144c19fb03f7a9b002ea1 EN eng Frontiers Media S.A. http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00185/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2016.00185 https://doaj.org/article/851f977ea19144c19fb03f7a9b002ea1 Frontiers in Marine Science, Vol 3 (2016) Arctic Regions Numerical modeling Copepods intraguild predation Metridia longa Canalus hyperboreus Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2016 ftdoajarticles https://doi.org/10.3389/fmars.2016.00185 2022-12-31T13:02:56Z 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 modelling 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 Directory of Open Access Journals: DOAJ Articles Arctic Frontiers in Marine Science 3 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic Regions Numerical modeling Copepods intraguild predation Metridia longa Canalus hyperboreus Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Arctic Regions Numerical modeling Copepods intraguild predation Metridia longa Canalus hyperboreus Science Q General. Including nature conservation geographical distribution QH1-199.5 Karolane Dufour Frédéric Maps Stéphane Plourde Pierre Joly Frédéric Cyr Impacts of intraguild predation on Arctic copepod communities |
topic_facet |
Arctic Regions Numerical modeling Copepods intraguild predation Metridia longa Canalus hyperboreus Science Q General. Including nature conservation geographical distribution QH1-199.5 |
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 modelling 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). |
format |
Article in Journal/Newspaper |
author |
Karolane Dufour Frédéric Maps Stéphane Plourde Pierre Joly Frédéric Cyr |
author_facet |
Karolane Dufour Frédéric Maps Stéphane Plourde Pierre Joly Frédéric Cyr |
author_sort |
Karolane Dufour |
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 |
Frontiers Media S.A. |
publishDate |
2016 |
url |
https://doi.org/10.3389/fmars.2016.00185 https://doaj.org/article/851f977ea19144c19fb03f7a9b002ea1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Amundsen Gulf Arctic copepod Arctic Calanus hyperboreus Copepods |
genre_facet |
Amundsen Gulf Arctic copepod Arctic Calanus hyperboreus Copepods |
op_source |
Frontiers in Marine Science, Vol 3 (2016) |
op_relation |
http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00185/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2016.00185 https://doaj.org/article/851f977ea19144c19fb03f7a9b002ea1 |
op_doi |
https://doi.org/10.3389/fmars.2016.00185 |
container_title |
Frontiers in Marine Science |
container_volume |
3 |
_version_ |
1766368010578165760 |