The Use of Lipid Profiles in Comparing the Diet of Seabirds

Horgan, I. E.; Barrett, Jennifer

doi:10.1007/978-3-642-82275-9_69

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…The relatively high Br content of the organic material studied (around 100 ppm, XRF analysis) proves the marine origin of the source material. Procellariiform stomach oils are clearly of dietary origin ; Watts and Warham I976), and consist mainly of triacylglycerides, acylglycerolethers or wax esters, and fatty acids (Kolattokudy 1976;Horgan and Barrett 1985). Apart from fatty acid profiles, the lipid class composition of the solidified (subfossil) material has not yet been analysed.…”

Section: Description Of the Materialsmentioning

confidence: 98%

Occupation of the Antarctic continent by petrels during the past 35 000 years: Inferences from a 14C study of stomach oil deposits

Hiller¹,

Wand²,

Kämpf³

et al. 1988

Polar Biol

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Section: Description Of the Materialsmentioning

confidence: 98%

Occupation of the Antarctic continent by petrels during the past 35 000 years: Inferences from a 14C study of stomach oil deposits

Hiller¹,

Wand²,

Kämpf³

et al. 1988

Polar Biol

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“…Horgan & Barrett (1985) attempted to use lipid class composition to compare the diet of seabirds. However, 2 different prey species may present almost identical lipid class profiles due to similarities in their feeding pattern and/or life cycle.…”

Section: Use Of Fatty Alcohol and Fatty Acid Patterns In Trophic Studiesmentioning

confidence: 99%

“…Lipids, as trophic markers, can be used to assess diet composition in a qualitative manner. For seabirds and their prey, this method has been used in very few studies (Horgan & Barrett 1985, Raclot et al 1998, Dahl et al 2003. In our work, care was taken to consider separately the WE and TAG compositions of Puffinus tenuirostris stomach oils to avoid confusion in the trophic signals from different lipid sources.…”

Section: Use Of Fatty Alcohol and Fatty Acid Patterns In Trophic Studiesmentioning

confidence: 99%

Lipid composition of stomach oil in a procellariiform seabird Puffinus tenuirostris: implications for food web studies

Connan¹,

Mayzaud²,

Boutoute³

et al. 2005

Mar. Ecol. Prog. Ser.

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Some procellariiform seabirds use a dual strategy for provisioning their chicks by alternating between short and long foraging trips (LT). Trophic relationships of adult birds are unknown when they feed for themselves during LT because digestion processes preclude direct prey determination. Since stomach contents collected after LT contain oil of dietary origin, we tested the use of oil lipids as prey trophic markers using the Tasmanian short-tailed shearwater Puffinus tenuirostris as a model seabird. The intra-specific variability of stomach oils was investigated through lipid class composition, and their fatty acid and fatty alcohol profiles. Oils mainly consisted of wax esters (WE) and triacylglycerols (TAG) (49 to 86 and 7 to 41%, respectively). Major fatty acids of TAG were in a decreasing order 18:1n-9, 16:0, 16:1n-7, 14:0, 20:5n-3 and 22:6n-3. The WE-fatty acid profiles were dominated by 18:1n-9 and 16:1n-7 while fatty alcohol profiles were dominated by 16:0. Fatty alcohol and fatty acid patterns were tested as possible descriptors of ingested prey (derived from literature data) through multivariate discriminant analyses. Comparisons of the WE fatty alcohol patterns showed a close association with the alcohol structure of 3 myctophid fish species namely Krefftichthys anderssoni, Gymnoscopelus braueri and Electrona antarctica; these results were corroborated by WE fatty acid analysis. Comparison of TAG fatty acid patterns showed the highest similarity between oils and the digestive gland of the myctophid-eater squid Moroteuthis ingens in association with the myctophid Electrona carlsbergi. Hence, biochemical analysis of both WE and TAG strongly suggested that adult short-tailed shearwaters mainly prey upon Antarctic/subAntarctic myctophids when they feed for themselves, thus emphasizing the role of these oceanic mesopelagic fish in the marine ecosystem of the Southern Ocean.

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“…In the context of dietary lipid studies of higher predators, blubber, milk and muscle from a range of species have been analysed with the aim of identifying prey groups (Horgan and Barrett 1985;Iverson 1993;Kirsch et al 1995;Smith et al 1997;Raclot et al 1998). However, when squid data have been included in these analyses, it is unclear whether fatty acid data were obtained from whole homogenised squid, flesh tissue only, or from squid remains retrieved from stomach contents of a predator.…”

Section: Case Study (1) Moroteuthis Ingens-the Digestive Gland (Dg) Amentioning

confidence: 99%

Applying new tools to cephalopod trophic dynamics and ecology: perspectives from the Southern Ocean Cephalopod Workshop, February 2–3, 2006

Jackson

Bustamante

Cherel

et al. 2007

Rev Fish Biol Fisheries

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The Use of Lipid Profiles in Comparing the Diet of Seabirds

Cited by 11 publications

References 10 publications

Occupation of the Antarctic continent by petrels during the past 35 000 years: Inferences from a 14C study of stomach oil deposits

Occupation of the Antarctic continent by petrels during the past 35 000 years: Inferences from a 14C study of stomach oil deposits

Lipid composition of stomach oil in a procellariiform seabird Puffinus tenuirostris: implications for food web studies

Applying new tools to cephalopod trophic dynamics and ecology: perspectives from the Southern Ocean Cephalopod Workshop, February 2–3, 2006

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