Inter-annual variability in diet of non-breeding pelagic seabirds Puffinus spp. at migratory staging areas: evidence from stable isotopes and fatty acids

Ronconi, Robert A.; Koopman, Heather N.; McKinstry, Caitlin A. E.; Wong, Sarah N. P.; Westgate, Andrew J.

doi:10.3354/meps08860

Cited by 39 publications

(51 citation statements)

References 62 publications

(89 reference statements)

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“…Mixed diets dominated by zooplankton are not unexpected. Multi-year studies of sooty shearwaters wintering in the Bay of Fundy, Canada have shown extensive feeding on northern krill Meganyctiphanes norvegica, Atlantic herring Clupea harengus and northern short-fin squid Illex illecebrosus (Brown et al 1981, Ronconi et al 2010.…”

Section: Discussionmentioning

confidence: 99%

Trans-equatorial migration and habitat use by sooty shearwaters Puffinus griseus from the South Atlantic during the nonbreeding season

Hedd

Montevecchi²,

Otley³

et al. 2012

Mar. Ecol. Prog. Ser.

111

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Section: Discussionmentioning

confidence: 99%

Trans-equatorial migration and habitat use by sooty shearwaters Puffinus griseus from the South Atlantic during the nonbreeding season

Hedd

Montevecchi²,

Otley³

et al. 2012

Mar. Ecol. Prog. Ser.

111

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“…For instance, FAs have been used in such qualitative or semi-quantitative ways to investigate spatial and temporal differences in foraging patterns as well as to confirm general re source use of a number of seabird species (e.g. Dahl et al 2003, Connan et al 2005, Käkelä et al 2007, Kar novsky et al 2008, Williams et al 2008, Wang et al 2009, Ronconi et al 2010). When such FA patterns are used in combination with other diet information (e.g.…”

Section: Qualitative Approaches To Investigation Of Foraging Patternsmentioning

confidence: 99%

“…direct observation, stomach contents, stable isotopes), results are compelling (e.g. Connan et al 2007, Karnovsky et al 2008, Ronconi et al 2010). This qualitative use of FAs provides valuable information that is likely not possible to obtain otherwise, but, it will generally not allow specific interpretation of seabird diet composition.…”

Section: Qualitative Approaches To Investigation Of Foraging Patternsmentioning

confidence: 99%

From lavage to lipids: estimating diets of seabirds

Karnovsky¹,

Hobson²,

Iverson³

2012

Mar. Ecol. Prog. Ser.

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“…Together, this suggests that while yolk FA are greatly influenced by endogenous metabolism, a small portion of the yolk FA signature (roughly 20%) is reflective of the diet. Therefore, similar to studies examining avian blood, yolk FA signatures appear to be a complex function of diet composition (Käkelä et al 2009;Ronconi et al 2010).…”

Section: Discussionmentioning

confidence: 62%

Physiological constraints and the influence of diet on fatty acids in the yolk of gentoo penguins, Pygoscelis papua

Polito

Koopman

Able³

et al. 2012

J Comp Physiol B

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Avian yolk fatty acids (FA) composition is influenced by two main factors: maternal diet and genetic factors that regulate FA metabolism. However, due to embryonic developmental requirements, yolk FA are thought to be physiologically constrained and less useful for dietary and trophic studies. We assessed the relative contributions of diet and physiological constraints in determining the yolk FA composition of a marine bird, the gentoo penguin (Pygoscelis papua) by comparing FA signatures of yolks and prey between a captive, controlled- feeding experiment and a wild population. Captive and wild yolk FA signatures differed even though both groups' yolk lipids were composed primarily of three FA (16:0, 18:0 and 18:1n-9). Differences were due to FA occurring in relatively low abundance, but which mirrored differences in the FA composition of diets. However, yolk FA signatures were correlated across three penguin species suggesting that common developmental constraints can be relatively more important than species-specific differences in diet or egg-laying physiology. While yolk FA are constrained, several minor components of yolk FA are reflective of diets and the calibration coefficients resulting from this study have the potential to be incorporated into predictive models and allow for quantitative dietary and trophic studies using FA analysis of penguin egg yolks.

show abstract

Inter-annual variability in diet of non-breeding pelagic seabirds Puffinus spp. at migratory staging areas: evidence from stable isotopes and fatty acids

Cited by 39 publications

References 62 publications

Trans-equatorial migration and habitat use by sooty shearwaters Puffinus griseus from the South Atlantic during the nonbreeding season

Trans-equatorial migration and habitat use by sooty shearwaters Puffinus griseus from the South Atlantic during the nonbreeding season

From lavage to lipids: estimating diets of seabirds

Physiological constraints and the influence of diet on fatty acids in the yolk of gentoo penguins, Pygoscelis papua

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