Journal Article
First insights into karyotype evolution within the family Mormyridae
Ozouf-Costaz, C., Coutanceau, J.P., Bonillo, C., Belkadi, L., Fermon, Y., Agnese, J.F., Guidi-Rontani, C. and Paugy, D.
Record Number:
5530
Year:
2015
Journal:
Cybium
Pages:
227-236
Volume:
39
Abstract:
The chromosomal diversity within six species of Mormyridae belonging to six different genera (Gnathonemus petersii, Marcusenius moorii, Ivindomyrus obdenboschi, Brienomyrus sp., Stomatorhinus walkeri and Petrocephalus microphthalmus) is investigated for the first time. These species have a conserved diploid chromosome number of 2n = 50 (except G. petersii 2n = 48) but different chromosome formulae, essentially involving pericentric inversions. C-banding has been used for the localization of heterochromatin. For a deeper interspecific comparison, several molecular markers were localized in the chromosomes by fluorescence in situ hybridization (FISH): a 18S rDNA probe; a microsatellite probe (GAA)(10), and a telomeric probe (TTAGGG)(7). The distribution of the 18S rDNA patterns, in particular, shows an amazing specific diversity, confirming a rapid radiation accompanied by major chromosome rearrangements.
Keywords
Author KeywordsMormyridaeCongo basinCytogeneticsKaryotypesChromosomesFluorescence in situ hybridization
Keywords PlusELECTRIC FISHES MORMYRIDAEGENETICS ANALYSISRECONSTRUCTIONMUGILIFORMESTELOMERASEEXPRESSIONTELEOSTEIREVEALSPISCES
Times Cited:
1
Relevent Species: