PMID- 15616355
OWN - NLM
STAT- MEDLINE
DCOM- 20050324
LR  - 20061115
IS  - 0006-3185 (Print)
IS  - 0006-3185 (Linking)
VI  - 207
IP  - 3
DP  - 2004 Dec
TI  - Chromosomal rearrangement in pectinidae revealed by rRNA loci and implications 
      for bivalve evolution.
PG  - 247-56
AB  - Karyotype and chromosomal localization of major (18-5.8-28S) and minor (5S) 
      ribosomal RNA genes were studied in two species of Pectinidae, zhikong (Chlamys 
      farreri) and bay (Argopecten irradians irradians) scallops, using fluorescence in 
      situ hybridization (FISH). C. farreri had a haploid number of 19 with a karyotype 
      of 3m + 4sm + 7sm-st + 4st + 1st-t, and A. i. irradians had a haploid number of 
      16 with a karyotype of 5st + 11t. In C. farreri, the major and minor rRNA genes 
      had one locus each and were mapped to the same chromosome-Chromosome 5. In A. i. 
      irradians, the major rRNA genes had two loci, located on Chromosomes 4 and 8, and 
      the 5S rRNA gene was found at a third chromosome-Chromosome 10. Results of this 
      and other studies indicate that karyotype of A. i. irradians (n = 16, 21 arms) is 
      secondary and derived from an ancestral karyotype similar to that of C. farreri 
      (n = 19, 38 arms) through considerable chromosomal loss and rearrangements. The 
      ability to tolerate significant chromosomal loss suggests that the modal 
      karyotype of Pectinidae and possibly other bivalves with a haploid number of 19 
      is likely tetraploid; i.e., at least one genome duplication has occurred during 
      the evolution of Bivalvia.
FAU - Wang, Yongping
AU  - Wang Y
AD  - Haskin Shellfish Research Laboratory, Institute of Marine and Coastal Sciences, 
      Rutgers University, 6959 Miller Avenue, Port Norris, New Jersey 08349, USA.
FAU - Guo, Ximing
AU  - Guo X
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - Biol Bull
JT  - The Biological bulletin
JID - 2984727R
RN  - 0 (DNA Primers)
RN  - 0 (DNA Probes)
RN  - 0 (RNA, Ribosomal)
SB  - IM
MH  - Animals
MH  - China
MH  - Chromosome Mapping
MH  - Chromosomes/*genetics
MH  - DNA Primers
MH  - DNA Probes/genetics
MH  - *Evolution, Molecular
MH  - Gene Duplication
MH  - Gene Rearrangement/*genetics
MH  - In Situ Hybridization, Fluorescence
MH  - Karyotyping
MH  - Mollusca/*genetics
MH  - RNA, Ribosomal/genetics
EDAT- 2004/12/24 09:00
MHDA- 2005/03/25 09:00
CRDT- 2004/12/24 09:00
PHST- 2004/12/24 09:00 [pubmed]
PHST- 2005/03/25 09:00 [medline]
PHST- 2004/12/24 09:00 [entrez]
AID - 207/3/247 [pii]
AID - 10.2307/1543213 [doi]
PST - ppublish
SO  - Biol Bull. 2004 Dec;207(3):247-56. doi: 10.2307/1543213.