PMID- 31438504
OWN - NLM
STAT- MEDLINE
DCOM- 20200121
LR  - 20200225
IS  - 1422-0067 (Electronic)
IS  - 1422-0067 (Linking)
VI  - 20
IP  - 17
DP  - 2019 Aug 21
TI  - Extensive Chromosomal Reorganization in Apistogramma Fishes (Cichlidae, 
      Cichlinae) Fits the Complex Evolutionary Diversification of the Genus.
LID - 10.3390/ijms20174077 [doi]
LID - 4077
AB  - Neotropical cichlid fishes are one of the most diversified and evolutionarily 
      successful species assemblages. Extremely similar forms and intraspecific 
      polychromatism present challenges for the taxonomy of some of these groups. 
      Several species complexes have a largely unknown origin and unresolved 
      evolutionary processes. Dwarf cichlids of the genus Apistogramma, comprising more 
      than a hundred species, exhibit intricate taxonomic and biogeographic patterns, 
      with both allopatric and sympatric distributions. However, karyotype evolution 
      and the role of chromosomal changes in Apistogramma are still unknown. In the 
      present study, nine South American Apistogramma species were analyzed using 
      conventional cytogenetic methods and the mapping of repetitive DNA sequences [18S 
      rDNA, 5S rDNA, and (TTAGGG)n] by fluorescence in situ hybridization (FISH). Our 
      results showed that Apistogramma has unique cytogenetic characteristics in 
      relation to closely related groups, such as a reduced 2n and a large number of 
      bi-armed chromosomes. Interspecific patterns revealed a scenario of remarkable 
      karyotypic changes, including a reduction of 2n, the occurrence of B-chromosomes 
      and evolutionary dynamic of rDNA tandem repeats. In addition to the well-known 
      pre-zygotic reproductive isolation, the karyotype reorganization in the genus 
      suggests that chromosomal changes could act as postzygotic barriers in areas 
      where Apistogramma congeners overlap.
FAU - Wagner Werneck Felix da Costa, Gideao
AU  - Wagner Werneck Felix da Costa G
AD  - Departamento de Biologia Celular e Genetica, Centro de Biociencias, Universidade 
      Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil.
FAU - de Bello Cioffi, Marcelo
AU  - de Bello Cioffi M
AD  - Departamento de Genetica e Evolucao, Universidade Federal de Sao Carlos (UFSCar), 
      Rodovia Washington Luiz, Km. 235, C.P. 676, Sao Carlos 13565-905, SP, Brazil.
FAU - Liehr, Thomas
AU  - Liehr T
AD  - Institute of Human Genetics, Friedrich Schiller University, Am Klinikum 1, 07747 
      Jena, Germany. Thomas.Liehr@med.uni-jena.de.
FAU - Feldberg, Eliana
AU  - Feldberg E
AD  - Instituto Nacional de Pesquisas da Amazonia, Laboratorio de Genetica Animal, Av. 
      Andre Araujo, 2936, Manaus 69077-000, AM, Brazil.
FAU - Antonio Carlos Bertollo, Luiz
AU  - Antonio Carlos Bertollo L
AD  - Departamento de Genetica e Evolucao, Universidade Federal de Sao Carlos (UFSCar), 
      Rodovia Washington Luiz, Km. 235, C.P. 676, Sao Carlos 13565-905, SP, Brazil.
FAU - Franco Molina, Wagner
AU  - Franco Molina W
AD  - Departamento de Biologia Celular e Genetica, Centro de Biociencias, Universidade 
      Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil.
LA  - eng
GR  - 442664/2015-0/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/
GR  - 302449/2018-3/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/
GR  - 401962/2016-4/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/
GR  - 2018/22033-1/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/
GR  - 88881.136128/2017-01/Alexander von Humboldt-Stiftung/
PT  - Journal Article
DEP - 20190821
PL  - Switzerland
TA  - Int J Mol Sci
JT  - International journal of molecular sciences
JID - 101092791
RN  - 0 (DNA, Ribosomal)
SB  - IM
MH  - Animals
MH  - Cichlids
MH  - DNA, Ribosomal/genetics
MH  - Evolution, Molecular
MH  - Karyotype
MH  - Repetitive Sequences, Nucleic Acid/*genetics
PMC - PMC6747227
OTO - NOTNLM
OT  - Neotropical cichlids
OT  - dwarf species
OT  - karyotype evolution
OT  - postzygotic isolation
OT  - repetitive DNAs
OT  - species flock
COIS- The authors declare no conflict of interest.
EDAT- 2019/08/24 06:00
MHDA- 2020/01/22 06:00
PMCR- 2019/09/01
CRDT- 2019/08/24 06:00
PHST- 2019/07/30 00:00 [received]
PHST- 2019/08/16 00:00 [revised]
PHST- 2019/08/19 00:00 [accepted]
PHST- 2019/08/24 06:00 [entrez]
PHST- 2019/08/24 06:00 [pubmed]
PHST- 2020/01/22 06:00 [medline]
PHST- 2019/09/01 00:00 [pmc-release]
AID - ijms20174077 [pii]
AID - ijms-20-04077 [pii]
AID - 10.3390/ijms20174077 [doi]
PST - epublish
SO  - Int J Mol Sci. 2019 Aug 21;20(17):4077. doi: 10.3390/ijms20174077.