雉鸡甘肃亚种的地理变异及分类研究

Studies of Geographic Variation and Taxonomic Status of Phasianus colchicus strauchi

雉鸡甘肃亚种(Phasiantus colchicus strauchi)自西南向东北,具白色项圈的个体比例增加,划分4个梯度<5 %,5～25%,25～50%,>50%,具白色眉纹个体自西南向东北比例增加也划分4个梯度,<10%,10～25%,25～50%,>50%.胸部暗绿色自西南向东北渐变狭.上体体色自南向北渐变淡.雉鸡甘肃亚种是联系白色项圈有无,白色眉纹有无,体色浓淡,胸部暗绿色有无的亚种的居间亚种.

The collar of Phasianus colchicus strauchi is either present or absent.The percentages of specimens with collar are by degrees increased fromsouthwest to northeast.The clines may be divided into four steps:(1)<50%,(2)50%～25(3)25%～50%and(4)>50%.The eyebrows of P.c.strauchi is either present or absent.Thepercentages of birds with eyebrows or its traces are gradually increased fromsouthwest to northeast.The clines may be divided into four grades:(1)<10%,(2)10%-25%,(3)25%-50% and(4)>50%.The variable tendency of dark green on breast is that it narrows graduallyin scope from southwest to northeast.Making a comparison among specimensat the seasons,the eolour on the upper part gradually pales from southto north.The P.c.strauchi is an intermediate subspecies which links othersubspecies with or without collar and eyebrows.