The first cytogenetic data on Strumigenys louisianae Roger, 1863 (Formicidae: Myrmicinae: Dacetini): the lowest chromosome number in the Hymenoptera of the neotropical region.

Autor: Alves-Silva AP; Laboratório de Citogenética de Insetos, Departamento de Biologia Geral. Universidade Federal de Viçosa; Viçosa, Minas Gerais, Brazil; Programa de Pós-graduação em Genética e Melhoramento. Universidade Federal de Viçosa; Viçosa, Minas Gerais, Brazil., Barros LA; Laboratório de Citogenética de Insetos, Departamento de Biologia Geral. Universidade Federal de Viçosa; Viçosa, Minas Gerais, Brazil; Programa de Pós-graduação em Genética e Melhoramento. Universidade Federal de Viçosa; Viçosa, Minas Gerais, Brazil., Chaul JC; Departamento de Biologia Geral. Universidade Federal de Viçosa; Viçosa, Minas Gerais, Brazil., Pompolo Sd; Laboratório de Citogenética de Insetos, Departamento de Biologia Geral. Universidade Federal de Viçosa; Viçosa, Minas Gerais, Brazil.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2014 Nov 07; Vol. 9 (11), pp. e111706. Date of Electronic Publication: 2014 Nov 07 (Print Publication: 2014).
DOI: 10.1371/journal.pone.0111706
Abstrakt: In the present study, the first cytogenetic data was obtained for the ant species Strumigenys louisianae, from a genus possessing no previous cytogenetic data for the Neotropical region. The chromosome number observed was 2n = 4, all possessing metacentric morphology. Blocks rich in GC base pairs were observed in the interstitial region of the short arm of the largest chromosome pair, which may indicate that this region corresponds to the NORs. The referred species presented the lowest chromosome number observed for the subfamily Myrmicinae and for the Hymenoptera found in the Neotropical region. Observation of a low chromosome number karyotype has been described in Myrmecia croslandi, in which the occurrence of tandem fusions accounts for the most probable rearrangement for its formation. The accumulation of cytogenetic data may carry crucial information to ensure deeper understanding of the systematics of the tribe Dacetini.
Databáze: MEDLINE