Deuterium (δD) in Feathers of Mongolian Waterbirds Uncovers Migratory Movements

Pérez, Guillermo E.; Hobson, Keith A.; Garde, Elena; Gilbert, Martin

doi:10.1675/063.033.0402

Cited by 7 publications

(7 citation statements)

References 37 publications

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“…Moreover, the δD estimates for rainfall may not correspond directly to feather isotope ratios. Although Peréz et al (2010) reported good correspondence between observed δD in feathers and expected δD in rainwater in a different suite of waterbirds sampled in Mongolia, birds that use landlocked water sources (which applies to most of the birds in this study) may be exposed to runoff waters that differ in their values from local rainfall. This disconnect between rainwater and water bodies used by the molting ducks could account for the discrepancies between expected and measured δD.…”

Section: Discussionmentioning

confidence: 62%

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Bird migration and avian influenza: A comparison of hydrogen stable isotopes and satellite tracking methods

Bridge

Kelly

Xiao

et al. 2014

Ecological Indicators

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Satellite-based tracking of migratory waterfowl is an important tool for understanding the potential role of wild birds in the long-distance transmission of highly pathogenic avian influenza. However, employing this technique on a continental scale is prohibitively expensive. This study explores the utility of stable isotope ratios in feathers in examining both the distances traveled by migratory birds and variation in migration behavior. We compared the satellite-derived movement data of 22 ducks from 8 species captured at wintering areas in Bangladesh, Turkey, and Hong Kong with deuterium ratios (δD) of these and other individuals captured at the same locations. We derived likely molting locations from the satellite tracking data and generated expected isotope ratios based on an interpolated map of δD in rainwater. Although δD was correlated with the distance between wintering and molting locations, surprisingly, measured δD values were not correlated with either expected values or latitudes of molting sites. However, population-level parameters derived from the satellite-tracking data, such as mean distance between wintering and molting locations and variation in migration distance, were reflected by means and variation of the stable isotope values. Our findings call into question the relevance of the rainfall isotope map for Asia for linking feather isotopes to molting locations, and underscore the need for extensive ground truthing in the form of feather-based isoscapes. Nevertheless, stable isotopes from feathers could inform disease models by characterizing the degree to which regional breeding populations interact at common wintering locations. Feather isotopes also could aid in surveying wintering locations to determine where high-resolution tracking techniques (e.g. satellite tracking) could most effectively be employed. Moreover, intrinsic markers such as stable isotopes offer the only means of inferring movement information from birds that have died as a result of infection. In the absence of feather based-isoscapes, we recommend a combination of isotope analysis and satellite-tracking as the best means of generating aggregate movement data for informing disease models.

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Section: Discussionmentioning

confidence: 62%

“…Some of the background data may be gleaned from other work with feather isotopes in the region (e.g. Pérez et al, 2010). However, useful samples are those for which there is a high degree of certainty about where a feather was grown.…”

Section: Discussionmentioning

confidence: 99%

Bird migration and avian influenza: A comparison of hydrogen stable isotopes and satellite tracking methods

Bridge

Kelly

Xiao

et al. 2014

Ecological Indicators

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“…Although Asia is a prime focus for HPAI, and despite considerable interest in conservation and disease surveillance issues involving waterbirds in that region investigations on migratory connectivity in wild birds that might be implicated in the spread of the disease are few (Chang et al 2008 ;Pérez et al 2010 ). The great cormorant ( Phalacrocorax carbo sinensis ) is a potential carrier of HPAI to Taiwan and to better understand the migration of this bird, SIA studies were conducted on several populations from different breeding sites and overwintering grounds (Chang et al 2008 ).…”

Section: Determining Migratory Connectivity For Waterfowl In Asiamentioning

confidence: 99%

“…In another study (Pérez et al 2010 ) feather sample were collected from Barheaded Geese ( Anser indicus ), Whooper Swans ( Cygnus cygnus ), Mongolian Gulls ( Larus vegae mongolicus ), Curlew Sandpipers ( Calidris ferruginea ) and Pacifi c Golden Plover ( Pluvialis fulva ) at seven sites in northern Mongolia. After cleaning to remove oils, stable-hydrogen isotope (δD) analysis of one feather per individual was conducted at the stable isotope facility at the National Hydrology Research Centre, Saskatoon, Saskatchewan, Canada.…”

Section: Determining Migratory Connectivity For Waterfowl In Asiamentioning

confidence: 99%

Stable Isotopes to Trace Migratory Birds and to Identify Harmful Diseases

Viljoen

Luckins²,

Naletoski

2016

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“…There has recently been considerable interest in using stable isotope methods to determine migratory connectivity for the many species of long-distance migratory birds that rely on wetlands (Hobson et al 2006;Pérez et al 2010;Bridge et al 2015). Thus, there is a need to explicitly assess both how much variation in δ 2 H f values occurs in these wetlandassociated species relative to terrestrial species (Table 1), and how much variation can be identified and accounted for when using stable isotope analysis to investigate dispersal or migratory movements.…”

Section: Sexmentioning

confidence: 99%