Molecular Verification of the Subspecies Status of the Mauritanian Spoonbill Platalea Leucorodia Balsaci

Ardea

Tamar Lok⁴  El-Hacen Mohamed El-Hacen³  Theunis Piersma⁴  Marco van der Velde²  Otto Overdijk¹ 

[1] 4 Werkgroep Lepelaar, Knuppeldam 4, 9166 NZ Schiermonnikoog, The Netherlands;1 Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, P.O. Box 11103, 9700 CC Groningen, The Netherlands;1 Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, P.O. Box 11103, 9700 CC Groningen, The Netherlands; 3 Parc National du Banc d'Arguin (PNBA), Avenue Gamal Abdel Nasser, B.P. 5355, Nouakchott, Mauritania;1 Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, P.O. Box 11103, 9700 CC Groningen, The Netherlands; 2 Department of Marine Ecology, NIOZ Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel, The Netherlands;

关键词: Wadden Sea;   

DOI  :  

学科分类：动物科学

来源: Nederlandse Ornithologische Unie/Netherlands Ornithological Union

【 摘 要 】

In1974R.deNauroisandF.RouxproposedthatthedistinctmorphologyofEurasianSpoonbillsPlatalealeucorodiabreedingonoffshoreislandsintheBancd'Arguin,Mauritania,incomparisonwiththesympatricallywinteringnorthwestEuropeanbreedingSpoonbillsPlatalealeucorodialeucorodia,justifiesrecognitionasaseparatesubspeciesPlatalealeucorodiabalsaci.ThisproposalisexaminedhereonthebasisofvariationinnuclearDNA,microsatellitesidentifiedearlierforP.minorandPajaja.WeshowthatthereissignificantvariationbetweenSpoonbillsbreedinginMauritania(n=25)andthesympatricallywinteringconspecificsbreedingintheDutchWaddenSea(n=105).Ofthetotalgeneticvariationamongthe130individuals,6.3%isattributabletovariationbetweenthetwobreedingareas(93.7%ofthevariationiswithinbreedingareas).PairwiseFSTvaluesshowedlowgeneticdifferentiation(FST'Slt;0.012)amongbreedingcolonieswithinTheNetherlands.ThelevelofgeneticdifferentiationindicatesthatthelevelofgeneflowbetweenTheNetherlandsandMauritaniaismuchlower(∼4–5individuals/generation)thanamongtheDutchcoloniesonseparateWaddenSeaislands.Fieldobservationsonindividuallycolour-markedbirdsfromTheNetherlandsindeedsuggestextensivedispersalwithinnorthwestEurope,withsomeintrogressionofleucorodiagenesintothebalsacipopulation.Thelevelofmicrosatellitedistinctivenessbetweensympatricpopulationsofthetwosubspeciesissimilartothatrecordedforsubspeciesofothermigrantbirds,andassuchjustifiesthesubspeciesstatusoftheMauritanianSpoonbill.

【 授权许可】

Unknown