PMID- 28557696
OWN - NLM
STAT- MEDLINE
DCOM- 20180118
LR  - 20180228
IS  - 1557-8542 (Electronic)
IS  - 1545-8547 (Linking)
VI  - 14
IP  - 5
DP  - 2017 Oct
TI  - Comparative Cytogenetics of the Black Ghost Knifefish (Gymnotiformes: 
      Apteronotidae): Evidence of Chromosomal Fusion and Pericentric Inversions in 
      Karyotypes of Two Apteronotus Species.
PG  - 471-476
LID - 10.1089/zeb.2017.1432 [doi]
AB  - The karyotype and chromosomal characteristics of Apteronotus albifrons and 
      Apteronotus caudimaculosus collected from populations of two different large 
      Brazilian river basins were analyzed by conventional and molecular cytogenetic 
      techniques, to contribute to the differentiation and identification of the 
      species in this genus. The diploid chromosome number was 2n = 24 for A. 
      albifrons, but with difference in the karyotype structure and fundamental number 
      values between two populations under study. In A. caudimaculosus, the diploid 
      chromosome number was 2n = 26, which was classified as 22 metacentric (m), 2 
      submetacentric (sm), and 2 acrocentric (a) chromosomes. Heterochromatins were 
      preferentially located in pericentromeric regions for both species. However, 
      there are more C-banded chromosomes in A. caudimaculosus than A. albifrons. The 
      sites of 18S DNA as revealed by fluorescence in situ hybridization (FISH) in the 
      karyotypes of both species corresponded to sites revealed by Ag impregnation, 
      although some additional 18S rDNA sites were observed in the genome of A. 
      caudimaculosus. FISH with 5S rDNA-probe revealed interstitial sites on the m pair 
      No. 1 for individuals of both A. albifrons populations, and in pericentromeric 
      regions on the long arm of pair Nos. 5 and 9 in those of A. caudimaculosus. The 
      karyotypes of A. albifrons and A. caudimaculosus indicated a reduction of 2n 
      resulting from chromosomal fusion, as could be hypothesized from the presence of 
      an interstitial telomere sequence in two chromosome pairs in karyotype of A. 
      caudimaculosus. Thus, the present study demonstrated species-specific cytogenetic 
      markers of otherwise morphologically very similar species A. albifrons and A. 
      caudimaculosus.
FAU - Fernandes, Carlos Alexandre
AU  - Fernandes CA
AD  - 1 Universidade Estadual de Mato Grosso do Sul, Unidade Universitaria de Mundo 
      Novo , Mato Grosso do Sul, Brazil .
FAU - Paiz, Leonardo Marcel
AU  - Paiz LM
AD  - 2 Centro de Ciencias Biologicas, Universidade Estadual de Maringa , Maringa, 
      Parana, Brazil .
AD  - 3 Centro de Ciencias Biologicas e da Saude, Universidade Estadual do Oeste do 
      Parana , Cascavel, Parana, Brazil .
FAU - Baumgartner, Lucas
AU  - Baumgartner L
AD  - 3 Centro de Ciencias Biologicas e da Saude, Universidade Estadual do Oeste do 
      Parana , Cascavel, Parana, Brazil .
FAU - Margarido, Vladimir Pavan
AU  - Margarido VP
AD  - 2 Centro de Ciencias Biologicas, Universidade Estadual de Maringa , Maringa, 
      Parana, Brazil .
AD  - 3 Centro de Ciencias Biologicas e da Saude, Universidade Estadual do Oeste do 
      Parana , Cascavel, Parana, Brazil .
FAU - Vieira, Margarida Maria de Rossi
AU  - Vieira MMR
AD  - 4 Universidade Estadual de Mato Grosso do Sul , Unidade Universitaria de Coxim, 
      Mato Grosso do Sul, Brazil .
LA  - eng
PT  - Comparative Study
PT  - Journal Article
DEP - 20170530
PL  - United States
TA  - Zebrafish
JT  - Zebrafish
JID - 101225070
RN  - 0 (DNA, Ribosomal)
RN  - 0 (RNA, Ribosomal, 18S)
SB  - IM
MH  - Animals
MH  - *Chromosome Inversion
MH  - Cytogenetic Analysis/methods
MH  - DNA, Ribosomal/genetics
MH  - *Gene Fusion
MH  - Gymnotiformes/*genetics
MH  - Karyotyping/*methods
MH  - RNA, Ribosomal, 18S/genetics
MH  - Telomere
OTO - NOTNLM
OT  - FISH
OT  - ITS
OT  - chromosome banding
OT  - fish cytotaxonomy
OT  - karyotype evolution
OT  - rDNA
EDAT- 2017/05/31 06:00
MHDA- 2018/01/19 06:00
CRDT- 2017/05/31 06:00
PHST- 2017/05/31 06:00 [pubmed]
PHST- 2018/01/19 06:00 [medline]
PHST- 2017/05/31 06:00 [entrez]
AID - 10.1089/zeb.2017.1432 [doi]
PST - ppublish
SO  - Zebrafish. 2017 Oct;14(5):471-476. doi: 10.1089/zeb.2017.1432. Epub 2017 May 30.