Show simple item record

dc.contributor.authorAya, Frolan A.
dc.contributor.authorKudo, Isao
dc.date.accessioned2019-09-16T02:29:28Z
dc.date.available2019-09-16T02:29:28Z
dc.date.issued2017
dc.identifier.citationAya, F. A., & Kudo, I. (2017). Nitrogen stable isotopes reveal age-dependent dietary shift in the Japanese scallop Mizuhopecten yessoensis. Isotopes in Environmental and Health Studies, 53(1), 80-90.en
dc.identifier.issn1025-6016
dc.identifier.urihttp://hdl.handle.net/10862/3521
dc.descriptionView supplementary materialen
dc.description.abstractOntogenetic niche shifts in diet are a consequence of changes in body size or resource partitioning between age classes. To better resolve the feeding patterns of the Japanese scallop Mizuhopecten yessoensis, we examined the relative importance of age and size in the diet of this species using stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) from 2006 to 2009. Contribution of food sources was quantified using an isotope mixing model by comparing the muscle tissue isotope ratios to those of suspended particulate organic matter (SPOM) and their zooplankton prey (e.g. micro- and meso-zooplankton). Unlike the δ13C values, which remained constant with age and size, muscle δ15N values were more positively correlated with age accounting for 69 % of variations than size with only 46 %. Increasing 15N values with age suggested that shifts in diet from SPOM to micro- and meso-zooplankton occurred during ontogeny in M. yessoensis. Results of the isotope mixing model indicated that SPOM contribution to scallop’s diet decreased from 68 to 8 % while those of zooplankton increased from 15 to 50 % with increasing age. This study concludes that age-related dietary shift explains the enrichment of 15N, as a result of predation on zooplankton by M. yessoensis.en
dc.publisherTaylor & Francisen
dc.subjectMizuhopecten yessoensis
dc.subjectAgeen
dc.subjectAnimalsen
dc.subjectCarbon-13en
dc.subjectDiet shiften
dc.subjectFooden
dc.subjectIsotope ecologyen
dc.subjectNitrogen-15en
dc.subjectScallopsen
dc.subjectSizeen
dc.subjectZooplanktonen
dc.titleNitrogen stable isotopes reveal age-dependent dietary shift in the Japanese scallop Mizuhopecten yessoensisen
dc.typeArticleen
dc.identifier.doi10.1080/10256016.2016.1186024
dc.citation.volume53
dc.citation.issue1
dc.citation.spage80
dc.citation.epage90
dc.citation.journalTitleIsotopes in Environmental and Health Studiesen
dc.identifier.essn1477-2639


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record