Fatty acid signatures of stomach oil and adipose tissue of northern fulmars (Fulmarus glacialis) in Alaska: Implications for diet analysis of Procellariiform birds

Shiway W. Wang; Sara J. Iverson; Alan M. Springer; Scott A. Hatch

doi:10.1007/s00360-007-0187-y

Fatty acid signatures of stomach oil and adipose tissue of northern fulmars (Fulmarus glacialis) in Alaska: Implications for diet analysis of Procellariiform birds

Shiway W. Wang, Sara J. Iverson, Alan M. Springer, Scott A. Hatch

Medicine

Medicine

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

35 Citas (Scopus)

Resumen

Procellariiforms are unique among seabirds in storing dietary lipids in both adipose tissue and stomach oil. Thus, both lipid sources are potentially useful for trophic studies using fatty acid (FA) signatures. However, little is known about the relationship between FA signatures in stomach oil and adipose tissue of individuals or whether these signatures provide similar information about diet and physiology. We compared the FA composition of stomach oil and adipose tissue biopsies of individual northern fulmars (N = 101) breeding at three major colonies in Alaska. Fatty acid signatures differed significantly between the two lipid sources, reflecting differences in dietary time scales, metabolic processing, or both. However, these signatures exhibited a relatively consistent relationship between individuals, such that the two lipid sources provided a similar ability to distinguish foraging differences among individuals and colonies. Our results, including the exclusive presence of dietary wax esters in stomach oil but not adipose tissue, are consistent with the notion that stomach oil FA signatures represent lipids retained from prey consumed during recent foraging and reflect little metabolic processing, whereas adipose tissue FA signatures represent a longer-term integration of dietary intake. Our study illustrates the potential for elucidating short- versus longer-term diet information in Procellariiform birds using different lipid sources.

Idioma original	English
Páginas (desde-hasta)	893-903
Número de páginas	11
Publicación	Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology
Volumen	177
N.º	8
DOI	https://doi.org/10.1007/s00360-007-0187-y
Estado	Published - nov. 2007

Nota bibliográfica

Funding Information:
Acknowledgments We are indebted to G. Siekaniec, G. V. Byrd, and the staV at Alaska Maritime National Wildlife Refuge for support with our research eVorts. We thank A. Larned, E. Naughter, M. Kaufman, N. Bargmann, and A. Ramey for their assistance with Weld work; S. Temple and S. Lang at Dalhousie University for assistance with lab analyses; A. Kitaysky, C. L. Buck, E. Murphy, J. Schmutz, K. Oakley, A. DeGange, L. Holland-Bartel, R. Kirby and three anonymous reviewers for providing helpful comments on an earlier manuscript; and S. Henrichs for use of lab equipment at the University of Alaska Fairbanks. Transportation to Weld sites was provided by Captain K. Bell and crew on the M/V Tiglâx, United States Coast Guard Kodiak Air Station, and the late Captain G. Edwards and crew on the F/V Big Valley. This project was funded by the United States Geological Survey, Alaska Science Center, and the Ken Turner Memorial Scholarship awarded to S. Wang. Additional support was provided by research and equipment grants to S. J. I. from the Natural Sciences and Engineering Research Council (NSERC), Canada, and by funding from the North PaciWc Research Board (NPRB) to A. M. S. and S. J. I. for the study “Regime Forcing and Ecosystem Response (ReFER)”. The collection of samples complied with the current rules of the Institutional Animal Care and Use Committee (IACUC #03–16) at the University of Alaska Fairbanks, the Alaska Department of Fish and

ASJC Scopus Subject Areas

Ecology, Evolution, Behavior and Systematics
Biochemistry
Physiology
Animal Science and Zoology
Endocrinology

PubMed: MeSH publication types

Journal Article
Research Support, Non-U.S. Gov't

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Wang, S. W., Iverson, S. J., Springer, A. M., & Hatch, S. A. (2007). Fatty acid signatures of stomach oil and adipose tissue of northern fulmars (Fulmarus glacialis) in Alaska: Implications for diet analysis of Procellariiform birds. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology, 177(8), 893-903. https://doi.org/10.1007/s00360-007-0187-y

Fatty acid signatures of stomach oil and adipose tissue of northern fulmars (Fulmarus glacialis) in Alaska: Implications for diet analysis of Procellariiform birds. / Wang, Shiway W.; Iverson, Sara J.; Springer, Alan M. et al.
En: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology, Vol. 177, N.º 8, 11.2007, p. 893-903.

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

Wang, SW, Iverson, SJ, Springer, AM & Hatch, SA 2007, 'Fatty acid signatures of stomach oil and adipose tissue of northern fulmars (Fulmarus glacialis) in Alaska: Implications for diet analysis of Procellariiform birds', Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology, vol. 177, n.º 8, pp. 893-903. https://doi.org/10.1007/s00360-007-0187-y

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abstract = "Procellariiforms are unique among seabirds in storing dietary lipids in both adipose tissue and stomach oil. Thus, both lipid sources are potentially useful for trophic studies using fatty acid (FA) signatures. However, little is known about the relationship between FA signatures in stomach oil and adipose tissue of individuals or whether these signatures provide similar information about diet and physiology. We compared the FA composition of stomach oil and adipose tissue biopsies of individual northern fulmars (N = 101) breeding at three major colonies in Alaska. Fatty acid signatures differed significantly between the two lipid sources, reflecting differences in dietary time scales, metabolic processing, or both. However, these signatures exhibited a relatively consistent relationship between individuals, such that the two lipid sources provided a similar ability to distinguish foraging differences among individuals and colonies. Our results, including the exclusive presence of dietary wax esters in stomach oil but not adipose tissue, are consistent with the notion that stomach oil FA signatures represent lipids retained from prey consumed during recent foraging and reflect little metabolic processing, whereas adipose tissue FA signatures represent a longer-term integration of dietary intake. Our study illustrates the potential for elucidating short- versus longer-term diet information in Procellariiform birds using different lipid sources.",

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note = "Funding Information: Acknowledgments We are indebted to G. Siekaniec, G. V. Byrd, and the staV at Alaska Maritime National Wildlife Refuge for support with our research eVorts. We thank A. Larned, E. Naughter, M. Kaufman, N. Bargmann, and A. Ramey for their assistance with Weld work; S. Temple and S. Lang at Dalhousie University for assistance with lab analyses; A. Kitaysky, C. L. Buck, E. Murphy, J. Schmutz, K. Oakley, A. DeGange, L. Holland-Bartel, R. Kirby and three anonymous reviewers for providing helpful comments on an earlier manuscript; and S. Henrichs for use of lab equipment at the University of Alaska Fairbanks. Transportation to Weld sites was provided by Captain K. Bell and crew on the M/V Tigl{\^a}x, United States Coast Guard Kodiak Air Station, and the late Captain G. Edwards and crew on the F/V Big Valley. This project was funded by the United States Geological Survey, Alaska Science Center, and the Ken Turner Memorial Scholarship awarded to S. Wang. Additional support was provided by research and equipment grants to S. J. I. from the Natural Sciences and Engineering Research Council (NSERC), Canada, and by funding from the North PaciWc Research Board (NPRB) to A. M. S. and S. J. I. for the study “Regime Forcing and Ecosystem Response (ReFER)”. The collection of samples complied with the current rules of the Institutional Animal Care and Use Committee (IACUC #03–16) at the University of Alaska Fairbanks, the Alaska Department of Fish and",

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Fatty acid signatures of stomach oil and adipose tissue of northern fulmars (Fulmarus glacialis) in Alaska: Implications for diet analysis of Procellariiform birds

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ASJC Scopus Subject Areas

PubMed: MeSH publication types

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