期刊
COMPARATIVE CYTOGENETICS
卷 9, 期 4, 页码 683-690出版社
PENSOFT PUBLISHERS
DOI: 10.3897/CompCytogen.v9i4.5760
关键词
Acipenser; Amoeba proteus; Astacus; Aulacantha scolymantha; chromosome number; karyotype evolution; linkage group; Lycaenidae; Ophioglossum; Pacifastacus; Plebicula; Polyommatus; vizcacha rat
资金
- Russian Science Foundation [N 14-14-00541]
- Russian Science Foundation [14-14-00541] Funding Source: Russian Science Foundation
The blue butterfly species Polyommatus (Plebicula) atlanticus (Elwes, 1906) (Lepidoptera, Lycaenidae) is known to have a very high haploid number of chromosomes (n= circa 223). However, this approximate count made by Hugo de Lesse 45 years ago was based on analysis of a single meiotic I metaphase plate, not confirmed by study of diploid chromosome set and not documented by microphotographs. Here I demonstrate that (1) P. atlanticus is a diploid (non-polyploid) species, (2) its meiotic I chromosome complement includes at least 224-226 countable chromosome bodies, and (3) all (or nearly all) chromosome elements in meiotic I karyotype are represented by bivalents. I also provide the first data on the diploid karyotype and estimate the diploid chromosome number as 2n=ca448-452. Thus, P. atlanticus is confirmed to possess the highest chromosome number among all the non-polyploid eukaryotic organisms.
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