Sources of variation in diets of harp and hooded seals estimated from quantitative fatty acid signature analysis (QFASA)

Tucker, Strahan; Bowen, W. D.; Iverson, Sara J.; Blanchard, Wade; Stenson, Garry B.

doi:10.3354/meps08000

Cited by 37 publications

(65 citation statements)

References 55 publications

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“…The number of FAs with a CC significantly different than 1.0 is much higher than for those reported for 2 wk old grey seal pups (values often used in QFASA analyses, e.g. Beck et al 2007, Tucker et al 2009). As noted by Nordstrom et al (2008), grey seal pup CCs were based on an exceedingly high (i.e.…”

Section: Importance Of Ccscontrasting

confidence: 54%

“…A mathematical model chooses the optimal proportion of prey that provides the 'best fit' (using Kulback-Liebler distances) to the predator's signature. QFASA has been applied to evaluate the prey of several marine homeotherms (Beck et al 2007, Thiemann et al 2007, Tucker et al 2009, Meynier et al 2010.…”

Section: Abstract: Fatty Acids · Quantitative Fatty Acid Signature Amentioning

confidence: 99%

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Effects of phylogeny and prey type on fatty acid calibration coefficients in three pinniped species: implications for the QFASA dietary quantification technique

Rosen¹,

Tollit²

2012

Mar. Ecol. Prog. Ser.

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Section: Importance Of Ccscontrasting

confidence: 54%

Section: Abstract: Fatty Acids · Quantitative Fatty Acid Signature Amentioning

confidence: 99%

Effects of phylogeny and prey type on fatty acid calibration coefficients in three pinniped species: implications for the QFASA dietary quantification technique

Rosen¹,

Tollit²

2012

Mar. Ecol. Prog. Ser.

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“…Most recently, FA signature analysis has been advanced to quantitatively estimate diets of higher predators such as seabirds and mammals (quantitative FA signature analysis, QFASA; Iverson et al 2004, 2006, Beck et al 2007, Nordstrom et al 2008, Thiemann et al 2008, Tucker et al 2009). These diet estimations have been conducted in northern temperate to Arctic ecosystems (and/or in captivity) using a small (3 to 9) to relatively moderate (≤ 28) number of prey types.…”

Section: Open Pen Access Ccessmentioning

confidence: 99%

Characterization of forage fish and invertebrates in the Northwestern Hawaiian Islands using fatty acid signatures: species and ecological groups

Piché¹,

Iverson²,

Parrish³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…Hg [13] Yes [4,23] DDTs, PCBs [16] www.frontiersinecology.org © The Ecological Society of America stable isotopes typically provide information about the source of proteins (given that samples are usually lipidextracted prior to isotopic analyses), fatty acids account for the source of lipids. Nevertheless, the different origin and temporal integration of the tracers can offer complementary information as different pieces of the same biogeochemical puzzle.…”

Section: Figure 3 Tracer Dynamics In the Tissues Of A Marine Predatomentioning

confidence: 99%

Trace me if you can: the use of intrinsic biogeochemical markers in marine top predators

Ramos

González‐Solís

2012

Frontiers in Ecol & Environ

183

162

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Human activities have serious impacts on marine apex predators. Inadequate knowledge of the spatial and trophic ecology of these marine animals ultimately compromises the viability of their populations and impedes our ability to use them as environmental biomonitors. Intrinsic biogeochemical markers, such as stable isotopes, fatty acids, trace elements, and chemical pollutants, are increasingly being used to trace the spatial and trophic ecology of marine top predators. Notable advances include the emergence of the first oceanographic “isoscapes” (isotopic geographic gradients), the advent of compound‐specific isotopic analyses, improvements in diet reconstruction through Bayesian statistics, and tissue analysis of tracked animals to ground‐truth biogeochemical profiles. However, most researchers still focus on only a few tracers. Moreover, insufficient knowledge of the biogeochemical integration in tissues, fractionation and routing processes, and geographic and temporal variability in baseline levels continue to hamper the resolution and potential of these markers in studying the spatial and feeding ecology of top predators.

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Sources of variation in diets of harp and hooded seals estimated from quantitative fatty acid signature analysis (QFASA)

Cited by 37 publications

References 55 publications

Effects of phylogeny and prey type on fatty acid calibration coefficients in three pinniped species: implications for the QFASA dietary quantification technique

Effects of phylogeny and prey type on fatty acid calibration coefficients in three pinniped species: implications for the QFASA dietary quantification technique

Characterization of forage fish and invertebrates in the Northwestern Hawaiian Islands using fatty acid signatures: species and ecological groups

Trace me if you can: the use of intrinsic biogeochemical markers in marine top predators

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