O le fa'aitiitia o le faitau aofa'i o kusi vao i Saina o 'pagota' o latou nofoaga fa'anatura?

Tusitala:Biology i le taimi nei, 27(10), pp.R376-R377.

Ituaiga (Avian):Kusi Swan (Anser cygnoides), Kusi pi Tundra (Anser serrirostris), Kusi pito papa'e pito i luma (Anser albifrons), kusi pito papa'e pito i luma (Anser erythropus), kusi greylag (Anser anser)

Pu'upu'u

E ui o le faitau aofaʻi o kusi vao i le taumalulu i Amerika i Matu ma Europa o loʻo tele ina olaola e ala i le faʻaogaina o fanua faʻatoʻaga, o loʻo i Saina (e foliga mai e gata i eleele susu) e masani ona faʻaitiitia. O masini telemetry na fa'apipi'iina i kusi vao malulu e 67 o ituaiga eseese e lima i eleele taufusi taua e tolu i le vaitafe o le Yangtze Floodplain (YRF), Saina e fuafua ai le fa'aogaina o nofoaga. 50 tagata ta'ito'atasi o ituaiga fa'aitiitiga e tolu na toetoe lava a fa'agata uma i aso ta'itasi i eleele susu; 17 tagata mai ituaiga e lua o loʻo faʻaalia tulaga mautu na faʻaaogaina eleele susu i le 83% ma le 90% o le taimi, a le o le faʻaogaina o fanua faʻatoʻaga. O fa'ai'uga nei e fa'amaonia ai su'esu'ega muamua e feso'ota'i ai le fa'aitiitia o kusi fa'ato'alulu a Saina i le leiloa o nofoaga fa'anatura ma le fa'aleagaina e afaina ai le sapalai o mea'ai. O nei taunuuga e saofagā foi i le faʻamalamalamaina o le leaga o le faʻasao o kusi taumalulu a Saina pe a faʻatusatusa i le tutusa ma isi ituaiga kusi o loʻo taumalulu i Korea lata ane ma Iapani, Europa i sisifo ma Amerika i Matu, e fafaga toetoe lava i fanua faʻatoʻaga, faʻasaʻolotoina i latou mai le faʻatapulaʻaina o le faitau aofaʻi o le taumalulu.