Factors Affecting Post-Breeding Moult in the Savi's Warbler Locustella luscinioides in Northern Poland

Ardea

Izabela Kulaszewicz¹  Dariusz Jakubas¹ 

[1] University of GdaÅ„sk, Department of Vertebrate Ecology and Zoology, ul. Wita Stwosza 59 80-308 GdaÅ„sk, Poland

关键词: Suspended Moult;   

DOI  :  

学科分类：动物科学

来源: Nederlandse Ornithologische Unie/Netherlands Ornithological Union

【 摘 要 】

AmajorityofEurasianshort-distancemigrantsmoultafterbreedingandbeforeautumnmigration,whilemostlong-distancemigrantsperformawintermoultinthetropicsafterautumnmigration.Anotherstrategyamonglong-distancemigrantsisapartialmoultonthebreedinggrounds,suspendedmoultandthencompletionofmoultonthewinteringgrounds.TheSavi'sWarblerLocustellaluscinioidesisasmallpasserineadoptingsucha‘suspendedmoulting’strategy.Here,weinvestigatethesequenceandextentofthepost-breedingmoultinSavi'sWarblersbreedinginandmigratingthroughnorthernPolandinrelationtosex,bodymassanddate.Weanalysed65molecularlysexedadultSavi'sWarblers(32femalesand33males)caughtduringautumnmigrationin2010–2011.AdultSavi'sWarblersfromthestudiedpopulationswerefoundtosuspendmoult.Exchangeofwingfeathersstartedatthethirdprimary(P3)andprogressedinbothdirections.TheonsetofsecondarymoultbeganwithS1andoccurredwhenP6wasshed.Tailmoultoccurredalmostsimultaneouslywiththesecondaries.Wedidnotfindanysignificantdifferencesbetweenthesexesintimeandextentofmoult.Lackofsexdifferencesinthetimeofmoultingsuggestscomparablepost-breedingcondition(fatload,bodymass)offemalesandmales.Incontrasttothepresentstudy,adultscaughtinWesternEuropestartedpost-breedingmoultfromP5,whichmaybeexplainedbydifferentpopulationsmigratingthroughnorthernPolandandWesternEurope.

【 授权许可】

Unknown