Triploidy in Hochstetter's frog,Leiopelma hochstetteri, from New Zealand
作者:
DavidM. Green,
James Kezer,
RonaldA. Nussbaum,
期刊:
New Zealand Journal of Zoology
(Taylor Available online 1984)
卷期:
Volume 11,
issue 4
页码: 457-460
ISSN:0301-4223
年代: 1984
DOI:10.1080/03014223.1984.10428261
出版商: Taylor & Francis Group
关键词: Leiopelma hochstetteri;amphibians;Leiopelmatidae;frogs;polyploidy;chromosomes;karyotype;heterochromatin;genetics
数据来源: Taylor
摘要:
Autotriploidy is described in a female of the endemic New Zealand frogLeiopelma hochstetteri.This frog was found to have 3n=33 chromosomes plus 2 supernumerary chromosomes. All the chromosomes in the karyotype of this species contained C-band heterochromatin at the centromeres. A prominent C-band was found to be associated with a secondary constriction on chromosome no. 7. The supernumerary chromosomes in this species appear to be mitotically stable and contain C-band heterochromatin at the centromeres. From the limited data presently available, the triploid individual may have resulted from the fertilisation of a diploid egg produced when the second meiotic division had been suppressed.
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