红嘴鸥核型及C带和银带
Karyotype,C-Bands and NORs in Larus ridibundus
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摘要: 本文以骨髓细胞常规空气干燥法和Sumner(1972)的方法(C带),Howell(1980)的方法(银带),对近年来昆明过冬的红嘴鸥的核型及其C带和银带进行了分析,结果显示出:红嘴鸥的2n应为68±。多数染色体的着丝粒区均显示出一个深浅不同的C带。Z染色体上有一个微小而模糊的C带,而W染色体大部分染色质被深染。其染色体经快速银染后表明,2对NORs均在微小染色体上。Abstract: The diploid chromosome number of L.ridibundus is determined to be 68 or so.Most of the macrochromosomes show a prominent centromeric C-band.The Z chromosome has a small,indistinct C-band,while the W chromosome is almost C-positive.The Ag-NORs are detected on 2 pairs of microchromosomes.