Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis
The euphausiid Euphausia pacifica is an omnivorous species of plankton that has been implicated in important food web processes such as the lengthening of food chains and the restructuring of community dynamics and energy transfer. We used carbon and nitrogen stable isotopes (delta C-13 and delta N-...
Published in: | Marine Ecology Progress Series |
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Online Access: | https://oasis.postech.ac.kr/handle/2014.oak/17454 https://doi.org/10.3354/MEPS09091 |
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ftponangunivst:oai:oasis.postech.ac.kr:2014.oak/17454 2023-05-15T13:52:55+02:00 Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis Park, JI Kang, CK Suh, HL 해양대학원 10098613 Kang, CK 2011-01 https://oasis.postech.ac.kr/handle/2014.oak/17454 https://doi.org/10.3354/MEPS09091 English eng INTER-RESEARCH MARINE ECOLOGY-PROGRESS SERIES 429 103 109 SCI급, SCOPUS 등재논문 SCI Ecology Marine & Freshwater Biology Oceanography Environmental Sciences & Ecology 0171-8630 2011-OAK-0000023553 https://oasis.postech.ac.kr/handle/2014.oak/17454 doi:10.3354/MEPS09091 12330 MARINE ECOLOGY-PROGRESS SERIES, v.429, pp.103 - 109 000290682100010 2-s2.0-79956062586 Euphausia pacifica Ontogenetic diet shift Stable isotope analysis East Sea Sea of Japan Trophic level Copepod carcass Neocalanus cristatus FOOD-WEB ANTARCTIC KRILL NITROGEN ISOTOPES CARBON ISOTOPES NORTH PACIFIC LARVAL KRILL JAPAN SEA SUPERBA PREY DELTA-N-15 Article ART 2011 ftponangunivst https://doi.org/10.3354/MEPS09091 2022-10-20T20:11:15Z The euphausiid Euphausia pacifica is an omnivorous species of plankton that has been implicated in important food web processes such as the lengthening of food chains and the restructuring of community dynamics and energy transfer. We used carbon and nitrogen stable isotopes (delta C-13 and delta N-15) to quantify the ontogenetic diet shift in E. pacifica in the East Sea (Japan Sea or Sea of Japan). Analyses revealed that delta N-15 values of adults (4.17 +/- 0.10%) were significantly lower than those of juveniles (5.40 +/- 0.30%), reflecting a shift in the diet of E. pacifica adults towards copepod Neocalanus cristatus carcasses, which have been suggested to drift throughout the year in the epipelagic layer of the East Sea. This suggests a trend toward increasing detritivory with maturity, which is not consistent with the results of previous conventional approaches to diet analysis in E. pacifica. Our results should be useful to modelers concerned with quantifying the effects of E. pacifica on energy transfer in marine food chains. X 1 1 10 9 scie scopus Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) Antarctic Pacific Marine Ecology Progress Series 429 103 109 |
institution |
Open Polar |
collection |
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
op_collection_id |
ftponangunivst |
language |
English |
topic |
Euphausia pacifica Ontogenetic diet shift Stable isotope analysis East Sea Sea of Japan Trophic level Copepod carcass Neocalanus cristatus FOOD-WEB ANTARCTIC KRILL NITROGEN ISOTOPES CARBON ISOTOPES NORTH PACIFIC LARVAL KRILL JAPAN SEA SUPERBA PREY DELTA-N-15 |
spellingShingle |
Euphausia pacifica Ontogenetic diet shift Stable isotope analysis East Sea Sea of Japan Trophic level Copepod carcass Neocalanus cristatus FOOD-WEB ANTARCTIC KRILL NITROGEN ISOTOPES CARBON ISOTOPES NORTH PACIFIC LARVAL KRILL JAPAN SEA SUPERBA PREY DELTA-N-15 Park, JI Kang, CK Suh, HL Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis |
topic_facet |
Euphausia pacifica Ontogenetic diet shift Stable isotope analysis East Sea Sea of Japan Trophic level Copepod carcass Neocalanus cristatus FOOD-WEB ANTARCTIC KRILL NITROGEN ISOTOPES CARBON ISOTOPES NORTH PACIFIC LARVAL KRILL JAPAN SEA SUPERBA PREY DELTA-N-15 |
description |
The euphausiid Euphausia pacifica is an omnivorous species of plankton that has been implicated in important food web processes such as the lengthening of food chains and the restructuring of community dynamics and energy transfer. We used carbon and nitrogen stable isotopes (delta C-13 and delta N-15) to quantify the ontogenetic diet shift in E. pacifica in the East Sea (Japan Sea or Sea of Japan). Analyses revealed that delta N-15 values of adults (4.17 +/- 0.10%) were significantly lower than those of juveniles (5.40 +/- 0.30%), reflecting a shift in the diet of E. pacifica adults towards copepod Neocalanus cristatus carcasses, which have been suggested to drift throughout the year in the epipelagic layer of the East Sea. This suggests a trend toward increasing detritivory with maturity, which is not consistent with the results of previous conventional approaches to diet analysis in E. pacifica. Our results should be useful to modelers concerned with quantifying the effects of E. pacifica on energy transfer in marine food chains. X 1 1 10 9 scie scopus |
author2 |
해양대학원 10098613 Kang, CK |
format |
Article in Journal/Newspaper |
author |
Park, JI Kang, CK Suh, HL |
author_facet |
Park, JI Kang, CK Suh, HL |
author_sort |
Park, JI |
title |
Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis |
title_short |
Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis |
title_full |
Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis |
title_fullStr |
Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis |
title_full_unstemmed |
Ontogenetic diet shift in the euphausiid Euphausia pacifica quantified using stable isotope analysis |
title_sort |
ontogenetic diet shift in the euphausiid euphausia pacifica quantified using stable isotope analysis |
publisher |
INTER-RESEARCH |
publishDate |
2011 |
url |
https://oasis.postech.ac.kr/handle/2014.oak/17454 https://doi.org/10.3354/MEPS09091 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic Antarctic Krill |
genre_facet |
Antarc* Antarctic Antarctic Krill |
op_relation |
MARINE ECOLOGY-PROGRESS SERIES 429 103 109 SCI급, SCOPUS 등재논문 SCI Ecology Marine & Freshwater Biology Oceanography Environmental Sciences & Ecology 0171-8630 2011-OAK-0000023553 https://oasis.postech.ac.kr/handle/2014.oak/17454 doi:10.3354/MEPS09091 12330 MARINE ECOLOGY-PROGRESS SERIES, v.429, pp.103 - 109 000290682100010 2-s2.0-79956062586 |
op_doi |
https://doi.org/10.3354/MEPS09091 |
container_title |
Marine Ecology Progress Series |
container_volume |
429 |
container_start_page |
103 |
op_container_end_page |
109 |
_version_ |
1766257766611025920 |