CHROMOSOMAL ANALYSIS OF 12 SPECIES OF MICROHYLIDAE (ANURA) FROM MADAGASCAR
CHROMOSOMAL ANALYSIS OF 12 SPECIES OF MICROHYLIDAE (ANURA) FROM MADAGASCAR
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DOI：
10.1007/bf00121036
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发表时间：
1976-01-01
期刊：
影响因子：
1.5
通讯作者：
BLOMMERSSCHLOSSER, RMA
中科院分区：
文献类型：
--
作者：
BLOMMERSSCHLOSSER, RMA
4 种的核型。 Dyscophinae 和 8 种。对 Cophylinae 进行了分析。所有病例的染色体数目均为 2n = 26。在这两个亚科之间观察到核型形式的差异； Dyscophinae 中的染色体显示长度逐渐减小，而 Cophylinae 中的核型显示第 5 对和第 6 对之间的大小明显不连续。在无齿蝽中发现了染色体多态性，第 4 对的染色体在纯合样本中为亚端着丝粒，而该对在杂合样本中显示出等长的亚端着丝粒和亚中着丝粒染色体，这表明周心倒转。尽管在 Cophylinae 中，染色体数量是恒定的，但染色体臂的数量是可变的。中心周倒位似乎在 Cophylinae 的染色体进化中发挥着重要作用。
The karyotypes of 4 spp. of Dyscophinae and 8 spp. of Cophylinae were analyzed. The chromosome number was 2n = 26 in all cases. Between the 2 subfamilies a difference in the form of the karyotype was observed; the chromosomes show a gradual decrease in length in the Dyscophinae, whereas in the Cophylinae the karyotype demonstrates a clear discontinuity of size between pairs 5 and 6. Chromosomal polymorphism was found in Plethodontohyla tuberata, the chromosomes of pair 4 were subtelocentric in the homozygous specimens, whereas this pair showed a subtelocentric and a submetacentric chromosome of equal length in the heterozygous one, suggesting a pericentric inversion. Although in the Cophylinae the chromosome number is constant, the number of chromosome arms is variable. Pericentric inversions seem to play an important role in the chromosomal evolution of the Cophylinae.