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Adaptive Radiation from a Chromosomal Perspective: Evidence of Chromosome Set Stability in Cichlid Fishes (Cichlidae: Teleostei) from the Barombi Mbo Lake, Cameroon
Z. Majtánová, A. Indermaur, ARB. Nyom, P. Ráb, Z. Musilova,
Jazyk angličtina Země Švýcarsko
Typ dokumentu časopisecké články
Grantová podpora
16-09784Y
Grantová Agentura České Republiky
PROMYS 166550
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
EXCELLENCE CZ.02.1.01/0.0/0.0/15_003/0000460 OP RDE
Ministerstvo Školství, Mládeže a Tělovýchovy
n/a
Basler Stiftung für Biologische Forschung
n/a
Basler Stiftung für Experimentelle Zoologie
NLK
Directory of Open Access Journals
od 2000
Free Medical Journals
od 2000
Freely Accessible Science Journals
od 2000
PubMed Central
od 2007
Europe PubMed Central
od 2007
ProQuest Central
od 2000-03-01
Open Access Digital Library
od 2000-01-01
Open Access Digital Library
od 2007-01-01
Health & Medicine (ProQuest)
od 2000-03-01
ROAD: Directory of Open Access Scholarly Resources
od 2000
PubMed
31601021
DOI
10.3390/ijms20204994
Knihovny.cz E-zdroje
- MeSH
- biologická adaptace genetika účinky záření MeSH
- biologická evoluce MeSH
- chromozomální nestabilita účinky záření MeSH
- cichlidy genetika MeSH
- hybridizace in situ fluorescenční MeSH
- jezera MeSH
- karyotyp MeSH
- karyotypizace MeSH
- mapování chromozomů MeSH
- pruhování chromozomů MeSH
- telomery genetika MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Kamerun MeSH
Cichlid fishes are the subject of scientific interest because of their rapid adaptive radiation, resulting in extensive ecological and taxonomic diversity. In this study, we examined 11 morphologically distinct cichlid species endemic to Barombi Mbo, the largest crater lake in western Cameroon, namely Konia eisentrauti, Konia dikume, Myaka myaka, Pungu maclareni, Sarotherodon steinbachi, Sarotherodon lohbergeri, Sarotherodon linnellii, Sarotherodon caroli, Stomatepia mariae, Stomatepia pindu, and Stomatepia mongo. These species supposedly evolved via sympatric ecological speciation from a common ancestor, which colonized the lake no earlier than one million years ago. Here we present the first comparative cytogenetic analysis of cichlid species from Barombi Mbo Lake using both conventional (Giemsa staining, C-banding, and CMA3/DAPI staining) and molecular (fluorescence in situ hybridization with telomeric, 5S, and 28S rDNA probes) methods. We observed stability on both macro and micro-chromosomal levels. The diploid chromosome number was 2n = 44, and the karyotype was invariably composed of three pairs of meta/submetacentric and 19 pairs of subtelo/acrocentric chromosomes in all analysed species, with the same numbers of rDNA clusters and distribution of heterochromatin. The results suggest the evolutionary stability of chromosomal set; therefore, the large-scale chromosomal rearrangements seem to be unlikely associated with the sympatric speciation in Barombi Mbo.
Department of Zoology Faculty of Science Charles University Prague 12844 Prague Czech Republic
Zoological Institute University of Basel 4051 Basel Switzerland
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- $a Cichlid fishes are the subject of scientific interest because of their rapid adaptive radiation, resulting in extensive ecological and taxonomic diversity. In this study, we examined 11 morphologically distinct cichlid species endemic to Barombi Mbo, the largest crater lake in western Cameroon, namely Konia eisentrauti, Konia dikume, Myaka myaka, Pungu maclareni, Sarotherodon steinbachi, Sarotherodon lohbergeri, Sarotherodon linnellii, Sarotherodon caroli, Stomatepia mariae, Stomatepia pindu, and Stomatepia mongo. These species supposedly evolved via sympatric ecological speciation from a common ancestor, which colonized the lake no earlier than one million years ago. Here we present the first comparative cytogenetic analysis of cichlid species from Barombi Mbo Lake using both conventional (Giemsa staining, C-banding, and CMA3/DAPI staining) and molecular (fluorescence in situ hybridization with telomeric, 5S, and 28S rDNA probes) methods. We observed stability on both macro and micro-chromosomal levels. The diploid chromosome number was 2n = 44, and the karyotype was invariably composed of three pairs of meta/submetacentric and 19 pairs of subtelo/acrocentric chromosomes in all analysed species, with the same numbers of rDNA clusters and distribution of heterochromatin. The results suggest the evolutionary stability of chromosomal set; therefore, the large-scale chromosomal rearrangements seem to be unlikely associated with the sympatric speciation in Barombi Mbo.
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