Observations on the Karyotype of Proasellus Coxalis
1985; University of Florence; Volume: 38; Issue: 3-4 Linguagem: Inglês
10.1080/00087114.1985.10797753
ISSN2165-5391
AutoresM. Di Castro, V. Lanza, R. Franconi, A. Rocchi,
Tópico(s)Genomics and Phylogenetic Studies
ResumoSUMMARYThe constitutive heterochromatin of Proasellus coxalis (2n = 12) fluoresces brightly when stained with chromomycin A3. It is located in a telomeric position on several chromosomes and displays considerable interindividual polymorphism both with regard to the number of sites (1–4) and their size. Silver-staining reveals that there are at least four chromosome pairs bearing nucleolus organizers and these are present at all the stages of mitosis and meiosis. The karyotypes of Proasellus coxalis and Asellus aquations, two species once considered congeneric, are compared.
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