摘要
本文报道了鸻形目鸟类2科10种的核型。并和已报道过的鸻形目6种21种的核型进行了比较研究。我们发现鸻形目鸟类中存在两种截然不同的核型,推断它们可能有不同的进化起源。这与Sibley等人(1987)通过对DNA—DNA杂交数据的分析得出的结果相似。
The karyotypes of species of Charadriiform birds were studied with colchicine-hypotonic-air drying technique from bone marrow cells. The results were given as follows: Charadriidae:
Vanellus uanellus, 2n=76Charadrius dubius, 2n=76C. alexandrinus, 2n=76Pluvialis squaiarola, 2n=76Scolopacidae:Tringa nebularia, 2n=88Arenaria interpres, 2n=88Gallinago gallinago, 2n=88G. stenura, 2n=88
Scolopax rusticola, 2n=88Calidris alpinus, 2n=88We found that the 7 species of plovers had fewer and larger macrochro-mosomes than the 9 species of spipes. It was probable that the karyotypes of snipes were relatively specialized and were evolved from the karyotypes of plovers by a series centric fissions of macrochromqgomes. In Charadriiformes, the 2 species of Haematopodidae, 1 specie of recurvirostridae and 1 specie of Burhinidae shared the same karyotvpe with plover's, and the 2 species of Jacanidae shared the same karyotype with snipe's. The comparative studies of karyotypes showed that the Charadriiformes birds may have two different origins. It was very interesting that the data of DNA hybridizations from Sibley (1987) showed the same results.
关键词
heng形目
核型
种系发生
分类学
Bird, Charadriifroraes, Karyotype, Phylogeny, Systeraatics,
