PMID- 24260636
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20131122
LR  - 20211021
IS  - 1993-0771 (Print)
IS  - 1993-078X (Electronic)
IS  - 1993-0771 (Linking)
VI  - 5
IP  - 4
DP  - 2011
TI  - Chromosomal diversification in ribosomal DNA sites in Ancistrus Kner, 1854 
      (Loricariidae, Ancistrini) from three hydrographic basins of Mato Grosso, Brazil.
PG  - 289-300
LID - 10.3897/CompCytogen.v5i4.1757 [doi]
AB  - Populations of seven Ancistrus species were analyzed from streams and rivers of 
      three hydrographic Brazilian basins. All populations showed different diploid 
      numbers (2n), fundamental numbers (FNs), and karyotypes. Some representatives of 
      Loricariidae have 2n = 54 chromosomes, which is very likely an ancestral 
      cytotaxonomic characteristic, but many other representatives show extensive 
      karyotype diversification. In the Ancistrus species studied, extensive karyotypic 
      differentiation, which is generally associated with chromosome number reduction 
      and rearrangement of the ribosomal RNA gene (rDNA) sites, was verified. 
      Chromosomal locations of 18S and 5S rDNA were jointly detected using fluorescence 
      in situ hybridization (FISH). In all the Ancistrus species analyzed, 18S rDNA 
      sites were detected only on one chromosome pair, though this differed among 
      species. 5S rDNA was located on 1-3 chromosome pairs either separately or in 
      synteny with 18S rDNA in four of the seven species/populations. Hence the 
      karyotype differentiation in Ancistrus species could be associated with a 
      morphological speciation process, suggesting that chromosome fusions, inversions, 
      deletions, duplications, and heterochromatination could contribute to the 
      karyotype evolution of these neotropical armored catfishes.
FAU - Mariotto, Sandra
AU  - Mariotto S
AD  - Instituto Federal de Educacao, Ciencia e Tecnologia de Mato Grosso, campus Bela 
      Vista, Cuiaba, Mato Grosso, Brazil.
FAU - Centofante, Liano
AU  - Centofante L
FAU - Vicari, Marcelo Ricardo
AU  - Vicari MR
FAU - Artoni, Roberto Ferreira
AU  - Artoni RF
FAU - Moreira-Filho, Orlando
AU  - Moreira-Filho O
LA  - eng
PT  - Journal Article
DEP - 20111109
PL  - Bulgaria
TA  - Comp Cytogenet
JT  - Comparative cytogenetics
JID - 101503807
PMC - PMC3833787
OTO - NOTNLM
OT  - 18S rDNA
OT  - 5S rDNA
OT  - Ag-NORs
OT  - Robertsonian rearrangement
OT  - karyotype evolution
EDAT- 2011/01/01 00:00
MHDA- 2011/01/01 00:01
PMCR- 2011/11/09
CRDT- 2013/11/22 06:00
PHST- 2011/08/05 00:00 [received]
PHST- 2011/10/07 00:00 [accepted]
PHST- 2013/11/22 06:00 [entrez]
PHST- 2011/01/01 00:00 [pubmed]
PHST- 2011/01/01 00:01 [medline]
PHST- 2011/11/09 00:00 [pmc-release]
AID - 10.3897/CompCytogen.v5i4.1757 [doi]
PST - epublish
SO  - Comp Cytogenet. 2011 Nov 9;5(4):289-300. doi: 10.3897/CompCytogen.v5i4.1757. 
      eCollection 2011.