Body Condition and Fuel Deposition Patterns of Calidrid Sandpipers During Migratory Stopover

Ardea

Zhijun Ma²  Xiaojing Gan²  Qiang Ma¹  Kejia Zhang¹  Jiakuan Chen²  Chiyeung Choi² 

[1] 2 Chongming Dongtan National Nature Reserve, Chongming, 202183, P.R. China;1 Coastal Ecosystems Research Station of the Yangtze River Estuary, Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, Shanghai, 200433, P.R. China

关键词: East Asian—australasian Flyway;   

DOI  :  

学科分类：动物科学

来源: Nederlandse Ornithologische Unie/Netherlands Ornithological Union

【 摘 要 】

WecomparedseasonalvariationsinbodyconditionandfueldepositionpatternsoffivecalidridsandpipersatChongmingDongtan(easternChina),astopoversiteintheEastAsian—AustralasianFlyway.Wetestedthehypothesisthatlong-distancemigrantsshowdifferentbodyconditionandfueldepositionpatternsrelativetothoseundertakingshort-distanceflights.Resultsindicatedthatthebodyconditionandfueldepositionpatternsofthesandpipersvariedbetweenthenorthwardandsouthwardmigrationseasonsandbetweenage-classes.GreatKnotsCalidristenuirostrisandRedKnotsCalidriscanutusmigratesouthwardsonalong-distancenonstopflightfromChongmingDongtantonorthwestAustralia,whilecoveringonthereturnflightarelativelyshort-distancebetweenChongmingDongtanandthenorthYellowSearegion.BothspeciesattainedasignificantlyhigherbodyconditionatChongmingDongtanduringthesouthwardthannorthwardmigration.Moreover,theyshowedasignificantincreaseinbodyconditionatChongmingDongtanduringnorthwardmigrationstopover,whichweseeasarecoveryfromthelongflightfromAustralia.Incontrast,Red-neckedStintsCalidrisruficollisandLong-toedStintsCalidrissubminuta,employingseriesofrelativelyshort-distanceflightsduringmigration,indicatednosignificantdifferenceindeparturebodyconditionatChongmingDongtanbetweenseasons,norsignificantincreaseinbodyconditionduringeithermigrationstopover.DunlinsCalidrisalpinaontheotherhand,showedasignificantlyhigherbodyconditionduringnorthwardthansouthwardmigrationstopover,mostlikelyinanticipationofthelongertravellingdistanceafterleavingChongmingDongtanduringnorthwardmigration.Thisstudyconfirmsthatthebodyconditionandfueldepositionpatternsamongshorebirdspeciesthatundertakelong-distancenonstopflightsaredifferentfromthosethatundertakeseriesofshort-distanceflights,suggestingthatthecomparisonofbodyconditionandfueldepositionpatternsofcalidridsandpiperscanbeanimportanttooltounderstandtheirmigrationstrategies.

【 授权许可】

Unknown