Three subspecies of Black-tailed Godwit share non-breeding sites in the world's largest river delta  

作　　者：Delip K.Das Wouter M.G.Vansteelant Bingrun Zhu Shariful Islam Naim Khandakar Marco van der Velde Chris J.Hassell Jesse R.Conklin Pierrick Bocher Jos C.E.W.Hooijmeijer Yvonne I.Verkuil Theunis Piersma 

机构地区：[1]Department of Zoology,Faculty of Life and Earth Sciences,Jagannath University,Dhaka,1100,Bangladesh [2]Conservation Ecology Group,Groningen Institute for Evolutionary Life Sciences,University of Groningen,PO Box 11103,9700 CC,Groningen,the Netherlands [3]BirdEyes,Centre for Global Ecological Change at the Faculties of Science&Engineering and Campus Fryslân,University of Groningen,Zaailand 110,8911 BN,Leeuwarden,the Netherlands [4]Theoretical and Computational Ecology,Institute for Biodiversity and Ecosystem Dynamics,University of Amsterdam,Science Park 904,1098 XH,Amsterdam,the Netherlands [5]Hunan Global Messenger Technology Co.,Ltd,Changsha,410205,China [6]Behavioural&Physiological Ecology,Groningen Institute for Evolutionary Life Sciences,University of Groningen,PO Box 11103,9700 CC,Groningen,the Netherlands [7]Global Flyway Network,PO Box 3089,Broome,WA 6725,Australia [8]Littoral Environnement et Sociétés UMR LIENSs 7266 CNRS,La Rochelle University,2 rue Olympe de Gouges,17000,La Rochelle,France [9]NIOZ Royal Netherlands Institute for Sea Research,Department of Coastal Systems,PO Box 59,Den Burg,1790 AB,Texel,the Netherlands

出　　处：《Avian Research》2025年第1期1-10,共10页鸟类学研究(英文版)

基　　金：supported by The Embassy of the Royal Kingdom of the Netherlands in Dhaka,The Embassy of France in Dhaka,and Bangabandhu Science and Technology Fellowship Trust,MoST,Bangladesh。

摘　　要：During the non-breeding season(September-April),Black-tailed Godwits(Limosa limosa)are commonly seen in coastal and inland wetlands of the Ganges-Brahmaputra-Meghna Delta in Bangladesh.We hypothesize that the Ganges-Brahmaputra-Meghna Delta,at the overlap between the Central Asian and East Asian-Australasian flyways,may host three subspecies that breed in disjunct areas of temperate and northern Asia:L.l.limosa,L.l.melanuroides,and L.l.bohaii.We used mitochondrial DNA(mt DNA)haplotype network and biometric analysis to determine subspecies in captured individuals,and deployed GPS-GSM transmitters to verify breeding areas of individuals with subspecies assignments.To test for differential habitat preferences,we sampled birds at two ecologically distinct habitats known to host the largest concentrations of non-breeding Black-tailed Godwits in Bangladesh:Nijhum Dweep National Park,a tidal coastal habitat with brackish water on the south-central coast,and Tanguar Haor(‘backmarsh'),a seasonal freshwater floodplain in the north.During the non-breeding seasons of 2021-2022 and 2022-2023,we sampled and measured 93 Black-tailed Godwits,54 of which were equipped with GPS-GSM transmitters.Our mt DNA haplotype network analysis confirmed the presence of limosa,melanuroides,and bohaii subspecies at the study sites.Thus,indeed,Black-tailed Godwits subspecies,despite having distinct breeding ranges,exhibit(partially)overlapping non-breeding ranges in Asia.The subspecies composition differed significantly between sites,with limosa and bohaii dominating in Tanguar Haor and melanuroides in Nijhum Dweep.Of the 21 individuals that were tracked to their breeding grounds,18 migrated to the expected breeding range of their respective subspecies.However,one bird with a limosa haplotype migrated to a known breeding area of bohaii,whereas two birds with melanuroides haplotypes migrated to the supposed breeding range of limosa.Therefore,while ecological factors at both ends of the flyways may shape the morphological and behavioural differe

关 键 词：Black-tailed godwits Central Asian flyway Ganges-Brahmaputra-Meghna Delta GPS-GSM tracking Migration mtDNA SUBSPECIES 

分 类 号：Q958[生物学—动物学]