2011年1月在滇池海埂大堤捕捉131只取食人工投食的红嘴鸥,对其体重、全长等6项量衡度进行测量,并与20世纪60-80年代采自云南各地的红嘴鸥标本相应值进行比较,结果表明,两者成鸟体重、尾长无显著差异,而全长、翅长、跗蹠长和喙长差异极显著；人工投食的红嘴鸥全长和喙长极显著小于自然觅食的个体,而翅长和跗蹠长则显著大于自然觅食的个体；亚成鸟体重、翅长和跗蹠长两者无显著差异,人工投食的亚成鸟全长、尾长和喙长则极显著小于自然觅食的亚成鸟相应量衡度.%The weight, length and other four indexes of 131 artificially fed black-headed seagulls that were captured on Haigeng Dam of the Dianchi Lake in January of 2011 were measured, and the data were respectively compared to those measured from the specimen collected from different parts of Yunnan Province during the 1 960 s and 1 980 s. The results showed that there were no significant differences in the adult bird's weight and tail length between the naturally and artificially fed birds (P>0.05), but there were extremely significant differences in the total length, wing length, instep length and the bill length of the two groups (P <0. 01). The total length and the bill length of the artificially fed black-headed seagull were extremely shorter than those of the naturally fed birds (P < 0.01). Whereas the wing length and the instep length of the artificially fed black-headed seagull were extremely longer than those of the naturally fed birds. There were no significant differences in the weight, wing length and the instep length of the sub-adult birds of the two groups. However, the total length, tail length and the bill length of the artificially fed sub-adult seagulls were significantly shorter than those measured from the naturally fed ones.
展开▼
