Comparative cytogenetic analysis of four species of Dendropsophus (Hylinae) from the Brazilian Atlantic forest

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• 作者：IGOR SOARES DE OLIVEIRA ; RAFAEL BUENO NOLETO…
• 刊名：Journal of Genetics
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：95
• 期：2
• 页码：349-355
• 全文大小：1,821 KB
• 刊物主题：Life Sciences, general; Microbial Genetics and Genomics; Plant Genetics & Genomics; Animal Genetics and Genomics; Evolutionary Biology;
• 出版者：Springer India
• ISSN：0973-7731
• 卷排序：95

文摘

We conducted a cytogenetic study of four hyline frog species (Dendropsophus elegans, D. microps, D. minutus and D. werneri) from southern Brazil. All species had 2n = 30 chromosomes, with interspecific and intraspecific variation in the numbers of metacentric, submetacentric, subtelocentric and telocentric chromosomes. C-banding and fluorochrome staining revealed conservative GC-rich heterochromatin localized in the pericentromeric regions of all species. The location of the nucleolus organizer regions, as confirmed by fluorescent in situ hybridization, differed between species. Telomeric probes detected sites that were restricted to the terminal regions of all chromosomes and no interstitial or centromeric signals were observed. Our study corroborates the generic synapomorphy of 2n = 30 chromosomes for Dendropsophus and adds data that may become useful for future taxonomic revisions and a broader understanding of chromosomal evolution among hylids.KeywordsAnuraC-bandingnucleolus organizer regionstelomeresDendropsophus.