| Item type |
itemtype_ver1(1) |
| 公開日 |
2021-11-11 |
| タイトル |
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タイトル |
Segmental isotope analysis of the vertebral centrum reveals the spatiotemporal population structure of adult Japanese flounder Paralichthys olivaceus in Sendai Bay, Japan |
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言語 |
en |
| 著者 |
Kato, Yoshikazu
Togashi, Hiroyuki
Kurita, Yutaka
Osada, Yutaka
Amano, Yosuke
Yoshimizu, Chikage
Kamauchi, Hiromitsu
Tayasu, Ichiro
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 内容記述 |
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内容記述タイプ |
Abstract |
|
内容記述 |
To identify the origin of various fishes and reconstruct their migration history at the individual level, isotope analysis is a powerful alternative to artificial tagging. We used a novel individual-based methodology to reconstruct individual migratory and/or trophic shifts associated with growth based on isotopic data in the vertebral centrum of adult Japanese flounder Paralichthys olivaceus in Sendai Bay. We measured carbon and nitrogen isotope ratios (δ^13C and δ^15N) in muscle tissues, and conducted a segmental isotope analysis of bulk δ^13C (δ^13Cbulk), bulk δ^15N (δ^15Nbulk), and δ^15N of glutamic acid (δ^15NGlu) and phenylalanine (δ^15NPhe) in vertebral collagen. The δ^15NGlu and δ^15NPhe values for bone collagen revealed an increase in trophic position and a shift to lower trophic baselines (δ^15NBase: indicative of δ^15N values of primary trophic sources) for most individuals. For both δ^13Cbulk and δ^15Nbulk, we detected significant positive correlations between values for muscle and the outermost section of vertebral collagen. A nonlinear time-series analysis of δ^13Cbulk and δ^15Nbulk suggested that a combination of intrinsic (the timing of migration from the nursery to deep offshore areas in juveniles) and extrinsic (habitat and/or food qualities) factors influence the isotopic chronology. A segmental isotope analysis revealed the segregation of individuals among sampling sites at all life stages and changes in trophic positions and δ^15NBase values during growth. Our results suggest that the P. olivaceus population in Sendai Bay has both temporal and spatial structure. The temporal structure may be caused by variation in the timing of migration from the nursery to the deep offshore area in juveniles, and the spatial structure may be explained by individual variation in habitat preferences. |
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言語 |
en |
| 出版者 |
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出版者 |
Springer |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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|
出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1007/s00227-021-03868-1 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0025-3162 |
| 書誌情報 |
en : Marine Biology
巻 168,
号 5,
p. 57,
発行日 2021-05
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| ファイル公開日 |
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|
日付 |
2022-05-01 |
|
日付タイプ |
Available |
210217_MarBiol_Manuscript.pdf (1.6 MB)
