Molecular phylogenetics and biogeography of tanagers in the genus Ramphocelus (Aves)
Molecular phylogenetics and biogeography of tanagers in the genus Ramphocelus (Aves)
复制标题
DOI：
10.1006/mpev.1996.0032
复制
发表时间：
1996-04-01
影响因子：
4.1
通讯作者：
Hackett, SJ
中科院分区：
文献类型：
--
作者：
Hackett, SJ
龙葵分布在整个新热带低地。本文利用细胞色素b和ND2基因的线粒体DNA （mtDNA）序列数据估计了鸟类Ramphocelus属9种中7种的亲缘关系。雀龙花和costaricensis的遗传分化程度较高，两个亚种在形态和遗传上都具有可诊断性和差异性。因此，建议将其提升到物种地位。三个进化支由两个基因序列支持；其中一个分支包括雀形虫、costaricr和icteronotus；第二支系包括碳柱柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱状柱；第三支系包括血羽龙属。对两个基因的饱和程度进行了评估，密码子第三位的饱和发生在10-12%未校正的成对序列发散。一般的区域谱系图显示了以下区域关系：太平洋和加勒比中美洲是姐妹地区，乔科是中美洲地区的姐妹地区，亚马逊/巴西东南部是乔科/中美洲分支的外群地区。(C) 1996学术出版社，Inc.
Ramphocelus tanagers are distributed throughout the Neotropical lowlands. In this paper, mitochrondrial DNA (mtDNA) sequence data from cytochrome b and ND2 genes are used to estimate relationships among seven of nine species of the avian genus Ramphocelus. Genetic differentiation is high between Ramphocelus passerinii passerinii and Ramphocelus passerinii costaricensis, and the two subspecies are diagnosable and distinct from one another both morphologically and genetically. Thus, elevation to species status is recommended, Three clades are supported by both gene sequences; one clade contains R. passerinii, R. costaricensis, and R. icteronotus; the second clade contains Ramphocelus carbo, Ramphocelus bresilius, and Ramphocelus nigrogularis; the third clade contains Ramphocelus sanguinolentus. The degree of saturation was assessed for both genes and saturation of third position of codons occurs by 10-12% uncorrected pairwise sequence divergence. The general area cladogram suggests the following area relationships: Pacific and Caribbean Central America are sister areas, Choco is the sister to the Central American area, and Amazonia/southeastern Brazil is the outgroup area to the Choco/Central American clade. (C) 1996 Academic Press, Inc.