Ingano ni ingenzi: ibishwi byo mu gihe cy'itumba bimara igihe kirekire kandi bikoresha ahantu hake mu biyaga binini byo mu Bushinwa.

Ikinyamakuru:Ubushakashatsi ku Ngurube, 10(1), pp.1-8.

Ubwoko (Inyoni):Inyoni yo mu bwoko bwa Eurasian wigeon (Mareca penelope), Inyoni yo mu bwoko bwa Falcated duck (Mareca falcata), Northern pintail (Anas acuta)

Incamake:

Ibimenyetso bigaragaza ko inyoni zo mu mazi zibera mu gihe cy'itumba zarushijeho kuba nyinshi ku biyaga bibiri binini byo mu kibaya cy'uruzi rwa Yangtze, ikiyaga cya East Dong Ting (Intara ya Hunan, 29°20′N, 113°E) n'ikiyaga cya Poyang (Intara ya Jiangxi, 29°N, 116°20′E), ugereranije n'ibindi biyaga, nubwo hari ahantu hashyizwe ububiko ahandi. Nubwo iyi sano ishobora guterwa n'ubwinshi bw'aho inyamaswa ziba mu biyaga binini zidahungabanye, ntabwo twumva byinshi ku bintu bigira ingaruka ku myitwarire y'umuntu ku giti cye inyuma y'iyi ngeso. Twakurikiranye ingendo z'ubwoko butatu bw'ibishanga mu gihe cy'itumba (Eurasian Wigeon Mareca penelope, Falcated Duck M. falcata na Northern Pintail Anas acuta) dukoresheje uburyo bwa GPS transmitters, dusuzuma itandukaniro riri hagati y'ibiyaga bibiri binini n'ibindi biyaga bito mu mikoreshereze y'aho ibishanga biba, igihe bimara kuri buri kiyaga n'intera ya buri munsi yimurwa n'inyoni zanditseho amazina mu gihe zari kuri ibyo bice. Inyoni zo mu bwoko bwa Eurasian Wigeon na Falcated Duck zamaze igihe kirekire inshuro eshanu kandi zakoresheje ubwoko bw’inyamaswa karemano ku biyaga bibiri binini (91-95% by’ahantu) ugereranije n’igihe zimaze ku biyaga bito, aho zimaze iminsi 28-33 ugereranije (usibye aho zafatiwe) kandi zigakoresha izindi nyamaswa nyinshi zitandukanye (harimo hafi 50% hanze y’ibiyaga). Ubushakashatsi bwacu ni ubwa mbere bwerekanye ko kuba inyoni zimaze igihe gito kandi zigakoresha ahantu hatandukanye mu buryo butandukanye ku biyaga bito bishobora gutanga umusanzu mu gusobanura ubwinshi bw’ibi binyabuzima n’ibindi binyabuzima biri mu biyaga binini mu myaka ya vuba aha. Ibi bigereranywa no kugabanuka k’ubwinshi bwabyo ku biyaga bito, aho gutakaza no kwangirika kw’aho bituye byagaragaye cyane kurusha ku biyaga binini.