Publications des scientifiques de l'IRD

Sharakhova M. V., Peery A., Antonio-Nkondjio C., Xia A., Ndo C., Awono-Ambene P., Simard Frédéric, Sharakhov I. V. (2013). Cytogenetic analysis of Anopheles ovengensis revealed high structural divergence of chromosomes in the Anopheles nili group. Infection Genetics and Evolution, 16, p. 341-348. ISSN 1567-1348.

Titre du document
Cytogenetic analysis of Anopheles ovengensis revealed high structural divergence of chromosomes in the Anopheles nili group
Année de publication
2013
Type de document
Article référencé dans le Web of Science WOS:000320569500045
Auteurs
Sharakhova M. V., Peery A., Antonio-Nkondjio C., Xia A., Ndo C., Awono-Ambene P., Simard Frédéric, Sharakhov I. V.
Source
Infection Genetics and Evolution, 2013, 16, p. 341-348 ISSN 1567-1348
Cytogenetic analysis is an informative classical approach to understanding the relationships among members in a group of closely related species of mosquitoes. Anopheles ovengensis is a recently discovered species of the Anopheles nil group and is one of the important malaria vectors in the African equatorial forest. This study characterized polytene chromosomes of An. ovengensis and compared them with polytene chromosomes of An. nili. Using fluorescent in situ hybridization and chromosome banding pattern comparison we have established correspondence between chromosomal arms of An. ovengensis and An. nil. Analysis of chromosome morphology in the two species revealed a limited similarity in the banding patterns. The most extensive reorganization occurs in pericentromeric and intercalary heterochromatin. Chromosomes of An. ovengensis are joined together by a diffuse chromocenter and they have two large regions of intercalary heterochromatin in arms 2L and 3R. In contrast, the chromocenter and intercalary heterochromatin are not seen in An. nil chromosomes. Comparative analysis of the arm association suggests the occurrence of a whole-arm translocation between the two members of the group. The observed, substantial reorganizations of chromosome structure implies either a rapid rate of chromosome evolution in the An. nil group, or that the two species belong to different taxonomic groups within subgenus Cellia.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Entomologie médicale / Parasitologie / Virologie [052]
Description Géographique
AFRIQUE EQUATORIALE ; CAMEROUN ; BURKINA FASO
Localisation
Fonds IRD [F B010060436]
Identifiant IRD
fdi:010060436
Contact