泰国极度濒危物种 Somphong's rasbora（Trigonostigma somphongsi）（鲈形目，鲤科）的首次细胞遗传学研究

IF 2.1 4区生物学 Q2 Agricultural and Biological Sciences

Caryologia Pub Date : 2024-03-15 DOI:10.36253/caryologia-2439

S. Aiumsumang, C. Vidthayanon, S. Kulabtong, A. Tanomtong, S. Phimphan

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引用次数: 0

摘要

首次对泰国 Trigonostigma somphongsi（Meinken，1958 年）进行染色体研究。标本采集自泰国中部 Nakhornnayok 省 Pak Phli 县。有丝分裂染色体直接取自两雄两雌的肾组织。采用传统染色法和 Ag-NOR 染色带染色法对染色体进行染色。结果表明，T. somphongsi的二倍体染色体数为2n=50，雌雄染色体的基数（NF）均为92。染色体类型包括 10 条元中心染色体、20 条亚元中心染色体、12 条尖中心染色体和 8 条端中心染色体。结果还显示，在第 2 对染色体的短臂上清晰地观察到核仁间组织区（NORs）。核型公式可推导为2n（二倍体）50=10m+20sm+12a+8t。

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First cytogenetic study of the Somphong’s rasbora (Trigonostigma somphongsi) (Perciformes, Cyprinidae), a critically endangered species in Thailand

The first chromosome study of Trigonostigma somphongsi (Meinken,1958) from Thailand. Specimens were collected from Pak Phli District, Nakhornnayok Province, central Thailand. The mitotic chromosomes were directly prepared from kidney tissues of two males and two females. Conventional staining and Ag-NOR banding techniques were applied to stain the chromosomes. The results shown that diploid chromosome number of T. somphongsi was 2n=50, the fundamental numbers (NF) were 92 in both male and female. The types chromosomes consisted of 10 metacentric, 20 submetacentric, 12 acrocentric and 8 telocentric chromosomes. The result also exhibited that the interstitial nucleolar organizer regions (NORs) were clearly observed at the short arm of chromosome pair 2. The karyotype formula could be deduced as: 2n (diploid) 50=10m+20sm+12a+8t.

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来源期刊

Caryologia 生物-遗传学

CiteScore

1.60

自引率

23.80%

发文量

审稿时长

12 months

期刊介绍： Caryologia is devoted to the publication of original papers, and occasionally of reviews, about plant, animal and human karyological, cytological, cytogenetic, embryological and ultrastructural studies. Articles about the structure, the organization and the biological events relating to DNA and chromatin organization in eukaryotic cells are considered. Caryologia has a strong tradition in plant and animal cytosystematics and in cytotoxicology. Bioinformatics articles may be considered, but only if they have an emphasis on the relationship between the nucleus and cytoplasm and/or the structural organization of the eukaryotic cell.