25-May-2013
21:32:14 IST
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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.40 [2011] >
IJMS Vol.40(1) [February 2011] >
| Title: | Chromosomal studies of three vulnerable marine fishes from west coast of India |
| Authors: | Kushwaha, Basdeo
Kumar, Ravindra
Nagpure, N S
Srivastava, Satish K
Basheer, V S
Anil, M K
Lakra, W S |
| Keywords: | Ag-NORs
C-bands
Chromomycin A3
Cytogenetics
Marine fishes |
| Issue Date: | Feb-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Cytogenetic profiling
was carried out in three vulnerable marine ornamental fishes, namely Thalassoma lunare, Zanclus cornutus and Arius
subrostratus, using silver
nitrate, chromoycin A3 CMA3 staining and C- banding techniques to
study the variation in localization of NORs and C-bands. Karyotype analyses of
these species revealed a diploid chromosome number of 48, all acrocentrics, in T. lunare and Z. cornutus. In A.
subrostratus, however, the diploid chromosome number was found to be 58
consisting of 22 metacentric, 16 submetacentric, 10 subtelocentric and 10
telocentric chromosomes with fundamental arm number of 96. The silver stained
NORs were observed on 3 pairs of chromosomes in T. lunare, whereas other two species possessed NOR on single pair
of chromosome. Within the species, there was complete concordance in number and
position of NORs as detected by AgNO3 and CMA3 staining.
Prominent constitutive heterochromatic bands were detected on 4, 2 and 3 pairs
of chromosomes, respectively, in T.
lunare, Z. cornutus and A. subrostratus. There was variation
found in the number and position on NORs and C-bands among these species, which
could be used as species-specific markers. This study describes for the first
time the cytogenetic profiling in Z.
cornutus and A. subrostratus. |
| Page(s): | 62-66 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.40(1) [February 2011]
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