Publications des scientifiques de l'IRD

Ozouf-Costaz C., Coutanceau J. P., Bonillo C., Belkadi L., Fermon Y., Agnèse Jean-François, Guidi-Rontani C., Paugy Didier. (2015). First insights into karyotype evolution within the family Mormyridae. Cybium, 39 (3), p. 227-236. ISSN 0399-0974.

Titre du document
First insights into karyotype evolution within the family Mormyridae
Année de publication
2015
Type de document
Article référencé dans le Web of Science WOS:000363709700006
Auteurs
Ozouf-Costaz C., Coutanceau J. P., Bonillo C., Belkadi L., Fermon Y., Agnèse Jean-François, Guidi-Rontani C., Paugy Didier
Source
Cybium, 2015, 39 (3), p. 227-236 ISSN 0399-0974
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.
Plan de classement
Limnologie biologique / Océanographie biologique [034] ; Ecologie, systèmes aquatiques [036]
Description Géographique
CONGO BASSIN
Localisation
Fonds IRD [F B010065637]
Identifiant IRD
fdi:010065637
Contact