Kev txheeb xyuas ntawm thaj chaw yug me nyuam thiab kev ua haujlwm txhua xyoo ntawm cov tshiab bohaii subspecies ntawm Dub-tailed Godwits.

Hom (Avian):Dub-tailed Godwit (Limosa limosa bohaii)

Phau ntawv Journal:Emu

Abstract:

Lub Bohai Dub-tailed Godwit (Limosa limosa bohaii) yog ib qho kev tshawb pom tshiab nyob hauv East Asian-Australasian Flyway. Raws li kev soj ntsuam satellite ntawm 21 tus neeg uas tau sau npe nyob rau sab qaum teb Bohai Bay, Tuam Tshoj, los ntawm 2016 txog 2018, peb ntawm no piav qhia txog lub voj voog txhua xyoo ntawm cov subspecies. Tag nrho cov noog muaj Thaib teb ua lawv qhov chaw nyob rau sab qab teb 'lub caij ntuj no'. Lub caij nplooj ntoos hlav tawm mus yog thaum lub Peb Hlis lig thaum tsiv mus rau sab qaum teb, Bohai Bay yog thawj qhov chaw nres tsheb uas lawv tau siv sijhawm nruab nrab 39 hnub (± SD = 6 d), tom qab ntawd Inner Mongolia thiab Jilin xeev (tso tseg rau 8 d ± 1 d). Kev tuaj txog ntawm thaj chaw yug me nyuam nyob rau hauv Lavxias teb sab Far East yog nyob rau hauv lub Tsib Hlis lig. Ob qhov chaw yug me nyuam raug kuaj pom, nrog qhov chaw nruab nrab ntawm 1100 km sib nrug; qhov chaw sab hnub tuaj yog dhau qhov paub Asian yug me nyuam faib ntawm Dub-tailed Godwit. Kev tsiv teb tsaws chaw sab qab teb tau pib thaum lub Rau Hli lig, nrog cov godwits tending kom nres ntev dua ntawm tib ob qhov chaw nres tsheb tseem ceeb siv rau lub caij nplooj ntoo hlav, piv txwv li Inner Mongolia thiab Jilin xeev (32 ± 5 d) thiab Bohai Bay (44 ± 8 d), nrog qee tus neeg ua qhov thib peb nres nyob rau hauv nruab nrab-qis nce mus txog ntawm tus dej Yangtze (4 12 ± 2) nyob rau sab qab teb ntawm Tuam Tshoj. Thaum lub Cuaj Hlis kawg, cov neeg taug qab feem ntau tau tuaj txog Thaib teb. Piv nrog rau cov npe hu ua yav dhau los, bohaii godwits muaj cov sijhawm sib txawv ntawm kev tsiv teb tsaws thiab moult, qhov kev tshawb fawb no ntxiv rau kev paub txog kev sib txawv ntawm kev sib txawv ntawm cov dub-tailed godwits hauv East Asian-Australian Flyway.