QUANTITATIVE FATTY ACID SIGNATURE ANALYSIS: A NEW METHOD OF ESTIMATING PREDATOR DIETS

By S. Iverson, C. Field, W. Bowen, Wade Blanchard. 2004

747 citations recorded by the source corpus.

Subfields: Ecology, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/49ff562707a700137af03dd5e82b3b00c3436e23

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Citations in the corpus

Lipid biomarkers reveal geographical differences in food supply to the cold-water coral Lophelia pertusa (Scleractinia) (2009, background): “…is based on the premise that primary producers have a specific fatty acid signature that is transferred to primary consumers, and thence up the food chain, being modified at every step, but retaining a significant amount of information between steps (Dalsgaard et al. 2003, Iverson et al. 2004).”
The Various Roles of Fatty Acids (2018, background): “Nevertheless, the consumer metabolism influences the uptake, incorporation, modification and deposition of dietary FA in the organism’s reserves and neutral FA composition of the predator will never exactly match that of its prey (see [292,293]).”
Diet of whale sharks Rhincodon typus inferred from stomach content and signature fatty acid analyses (2013, background): “2000), and only describe the most recent meal (Iverson et al. 2004) which, for whale sharks, is likely to be of coastal origin since that is where they are stranded or caught.”
On the Use of Stable Isotopes in Trophic Ecology (2011, methodology): “Fatty acid profiling of fatty acid methyl esters (FAMEs) has been used extensively in foraging studies, especially in marine systems (Iverson et al. 2004, Loseto et al. 2009).”
Seabirds as indicators of food web structure and ecosystem variability: qualitative and quantitative diet analyses using fatty acids (2007, methodology): “…developed statistical model, it is possible to quantitatively estimate the species composition of diets of individual predators at time scales relevant to the ecological processes affecting survival, as has been demonstrated in several marine and aquatic mammals (Iverson et al. 2004, 2006).”
Feeding ecology of eastern North Pacific killer whales Orcinus orca from fatty acid, stable isotope, and organochlorine analyses of blubber biopsies (2005, background): “Similar to many other marine mammals, blubber fatty acid compositions of killer whales are likely to be appreciably altered relative to ingested fatty acids due to selective metabolism of individual fatty acids prior to deposition in the blubber (Iverson et al. 2004).”
A fundamental dichotomy in long-chain polyunsaturated fatty acid abundance between and within marine and terrestrial ecosystems (2017, methodology): “They are progressively consumed, and generally selectively retained, by other aquatic organisms higher up in the food chain (e.g., zooplankton, benthic invertebrates, molluscs, and fish; Dalsgaard et al. 2003; Iverson et al. 2004; Kainz et al. 2004; Budge et al. 2006; Hixson et al. 2015).”
Perspectives on marine zooplankton lipids (2007, background): “In related studies, considerable progress has been made using signature lipid profiles to investigate marine mammals, including seals, with both the fatty acid signature approach and more recently a refined quantitative fatty acid signature approach, which takes into account the differential catabol”
DIETARY ANALYSIS FROM FECAL SAMPLES: HOW MANY SCATS ARE ENOUGH? (2005, background): “More recently, greater emphasis has been placed on developing nondestructive methods to determine diet (Iverson et al. 2004; Korschegen 1980; Litvaitis 2000; Pierce and Boyle 1991; Putman 1984).”
The biology and ecology of the ocean sunfish Mola mola: a review of current knowledge and future research perspectives (2009, background): “The use of stable isotope ratios will prove more useful in identifying predator trophic levels rather than the species composition of a diet (Iverson et al. 2004) but may help to pinpoint the relative importance of gelatinous zooplankton in M.”
Diet tracing in ecology: Method comparison and selection (2017, background): “Consequently, an estimate that accounts for the change in the proportion of a specific fatty acid from the diet to the consumer (Iverson et al., 2004 called them calibration coefficients) is required to obtain accurate dietary estimates (Happel et al., 2016).”
Diet studies of seabirds: a review and recommendations (2007, methodology): “…(among species) and characteristic (within species), (ii) long-chain (i.e. .14 units) fatty acids pass relatively un-degraded to predators, and (iii) the predator ultimately stores prey fatty acids in adipose tissue, which can be sampled non-destructively using biopsy (Iverson et al., 2004).”
Evaluating quantitative fatty acid signature analysis (QFASA) using harbour seals Phoca vitulina richardsi in captive feeding studies (2008, methodology): “Our blubber DFA analyses highlighted that animal diet groupings were discernable with 80 to 85% accuracy using just 6 FAs, particularly between the 4 calibration seals that were fed herring for >1 yr and the 7 seals that consumed smelt for the entire study (Fig.”