@article{oai:nipr.repo.nii.ac.jp:00010238,
 author = {Cherel, Yves and Koubbi, Philippe and Giraldo, Carolina and Penot, Florian and Tavernier, Eric and Moteki, Masato and Ozouf-Costaz, Catherine and Causse, Romain and Chartier, Amelie and Hosie, Graham and Cherel, Yves and Koubbi, Philippe and Giraldo, Carolina and Penot, Florian and Tavernier, Eric and Moteki, Masato and Ozouf-Costaz, Catherine and Causse, Romain and Chartier, Amelie and Hosie, Graham},
 issue = {2},
 journal = {Polar science, Polar science},
 month = {Aug},
 note = {We used the stable isotope method to investigate the ecological niches of Antarctic fishes, with δ13C and δ15N as proxies of fish habitats and dietary habits, respectively. Muscle isotopic signature was measured for each of 237 delipidated tissue samples from 27 fish species collected offshore Adélie Land, East Antarctica. Overall, δ13C values ranged from −25.3‰ to −18.2‰, thus allowing characterizing of the fish habitats, with inshore/benthic species having more positive δ13C signatures than offshore/pelagic ones. No clear difference in the δ13C values of pelagic fishes was found between species living in neritic and oceanic waters. Overall, the δ15N signatures of neritic pelagic and epibenthic fishes encompassed 1.0 trophic level (3.1‰), a higher difference than that (1.4‰) found within the oceanic assemblage. Fishes with the lowest and highest δ15N values are primarily invertebrate- and fish-eaters, respectively. The isotopic niches of fishes illustrate the different mechanisms allowing coexistence, with most fishes segregating at least by one of the two niche axes (δ13C and δ15N). Muscle isotopic values also document interindividual foraging specialization over the long-term in coastal benthic fishes, but not in more offshore pelagic species. Finally, the δ15N signatures of fishes overlap with those of penguins and seals, indicating that seabirds and marine mammals share the upper levels of the Antarctic pelagic ecosystem with some large fish species. In conclusion, the concept of isotopic niche is a powerful tool to investigate various aspects of the ecological niche of Antarctic fishes, thus complementing the use of other conventional and non-conventional approaches., アデリーランド沖の，沿岸から外洋域にかけての魚類の生態的地位（ニッチ）を，炭素と窒素の安定同位体比を用いて調べた。炭素同位体比はoffshore/pelagic speciesよりもinshore/benthic speciesでより大きい。Pelagic fishにおいてneriticとoceanicでは炭素同位体比に違いは見られなかった。窒素同位体比をみると，neriticではpelagic fishよりepibenthic fishで，およそ１栄養段階が高かった。最も低い窒素同位体比は無脊椎動物食，高い同位体比は魚食性の魚類で認められた。同位体比からみると、ほとんどの種が炭素（生息場所）か窒素（餌）の同位体比のどちらか、または両方によりニッチは分けられ、多種の魚類が共存できることを示している。魚類の窒素同位体比はペンギンやアザラシと重複しており，海鳥や海生哺乳類と，大型魚類は高次のレベルで漂泳圏生態系を共有している。},
 pages = {286--297},
 title = {Isotopic niches of fishes in coastal, neritic and oceanic waters off Adelie land, Antarctica},
 volume = {5},
 year = {2011}
}