Understanding the trophic role of the Antarctic ctenophore, Callianira antarctica, using lipid biomarkers SCIE SCOPUS

DC Field Value Language
dc.contributor.author Ju, SJ -
dc.contributor.author Scolardi, K -
dc.contributor.author Daly, KL -
dc.contributor.author Harvey, HR -
dc.date.accessioned 2020-04-20T14:55:20Z -
dc.date.available 2020-04-20T14:55:20Z -
dc.date.created 2020-02-04 -
dc.date.issued 2004-11 -
dc.identifier.issn 0722-4060 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/5198 -
dc.description.abstract To better understand the trophic role of ctenophores in Antarctica during austral fall and winter, a major species of cydippid ctenophore, Callianira antarctica, was collected during April/May (fall) and August/September (winter) 2002 in the vicinity of Marguerite Bay. Lipid content, lipid classes, fatty acids, fatty alcohols and sterols were analyzed in animals, together with lipid biomarkers in krill and copepod species representing potential ctenophore prey. Lipid content in ctenophores collected in winter was slightly higher than from animals in fall (4.8 and 3.5% of dry weight, respectively). Polar lipids were the dominant lipid class in ctenophores, accounting for over half of the lipid content, with significant amounts of free fatty alcohols (more than 10% of total lipid content) detected. Lipid-class composition, however, differed significantly between seasons, with significant amounts of neutral lipid (wax esters and triacylglycerols) only detected in animals from fall. Although the dominant lipid classes in ctenophores varied between fall and winter, individual lipids (i.e., fatty acids, alcohols and sterols) showed only minor changes between seasons. Specifically, long-chain polyunsaturated fatty acids [20:5(n-3) and 22:6(n-3)] found in high abundance in larval krill were also elevated in ctenophores collected in winter. Very high amounts of monounsaturated fatty alcohols, particularly 20:1(n-9) and 22:1(n-11), known to be important components of wax esters in calanoid copepods, were also observed. Multivariate analysis using the suite of lipids found indicated that copepods are an important diet item for ctenophores in the study area. Results further suggest that C. antarctica feed actively year-round, with larval krill providing a food resource during austral winter. -
dc.description.uri 1 -
dc.language English -
dc.publisher SPRINGER -
dc.subject FATTY-ACID COMPOSITION -
dc.subject FLAME IONIZATION DETECTION -
dc.subject JELLYFISH AURELIA-AURITA -
dc.subject KRILL EUPHAUSIA-SUPERBA -
dc.subject MARGINAL ICE-ZONE -
dc.subject CALANUS-PROPINQUUS -
dc.subject CALANOIDES-ACUTUS -
dc.subject ECOLOGICAL IMPLICATIONS -
dc.subject GELATINOUS ZOOPLANKTON -
dc.subject PLEUROBRACHIA-PILEUS -
dc.title Understanding the trophic role of the Antarctic ctenophore, Callianira antarctica, using lipid biomarkers -
dc.type Article -
dc.citation.endPage 792 -
dc.citation.startPage 782 -
dc.citation.title POLAR BIOLOGY -
dc.citation.volume 27 -
dc.citation.number 12 -
dc.identifier.bibliographicCitation POLAR BIOLOGY, v.27, no.12, pp.782 - 792 -
dc.identifier.doi 10.1007/s00300-004-0652-y -
dc.identifier.wosid 000225050300007 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus FATTY-ACID COMPOSITION -
dc.subject.keywordPlus FLAME IONIZATION DETECTION -
dc.subject.keywordPlus JELLYFISH AURELIA-AURITA -
dc.subject.keywordPlus KRILL EUPHAUSIA-SUPERBA -
dc.subject.keywordPlus MARGINAL ICE-ZONE -
dc.subject.keywordPlus CALANUS-PROPINQUUS -
dc.subject.keywordPlus CALANOIDES-ACUTUS -
dc.subject.keywordPlus ECOLOGICAL IMPLICATIONS -
dc.subject.keywordPlus GELATINOUS ZOOPLANKTON -
dc.subject.keywordPlus PLEUROBRACHIA-PILEUS -
dc.relation.journalWebOfScienceCategory Biodiversity Conservation -
dc.relation.journalWebOfScienceCategory Ecology -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Biodiversity & Conservation -
dc.relation.journalResearchArea Environmental Sciences & Ecology -
Appears in Collections:
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse