NDLI: Karyotype of North American shortnose sturgeon Acipenser brevirostrum with the highest chromosome number in the Acipenseriformes

Content Provider	Springer Nature Link
Author	Kim, Dong Soo Nam, Yoon Kwon Park, Chul Hong Chapman, Frank A.
Copyright Year	2005
Abstract	The shortnose sturgeon Acipenser brevirostrum was revealed to have a larger number of chromosomes than previously reported for other sturgeon species. Its chromosome number ranged from 362 to 372 (of ten specimens examined), showing intraindividual variation. The karyotype of metaphase with the highest chromosome number (372) consisted of 89 pairs of macrochromosomes and 97 pairs of microchromosomes (fundamental number; NF = 550). Although the microchromosomes were relatively shorter than the macrochromosomes, most of them had discernible arms and centromeres. Silver-stained nucleolar organizer regions (Ag-NORs) were localized on the telomeric regions of 5 pairs of chromosomes (Ag-NORs = 10): 4 were made up of small meta/submetacentrics and 1 of acrocentrics. Polyploidy of A. brevirostrum should be hexaploid based on the karyotype, numerous chromosomes, Ag-NORs, and previously reported large genome size (ca. 13 pg DNA/cell).
Starting Page	94
Ending Page	97
Page Count	4
File Format	PDF
ISSN	13418998
Journal	Ichthyological Research
Volume Number	52
Issue Number	1
e-ISSN	16163915
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-02-25
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Shortnose sturgeon Acipenser brevirostrum Chromosome number Ag-NORs Ecology Marine Ecology Zoology Animal Systematics/Taxonomy/Biogeography
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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