Cytogenetic Studies on Workers of the Neotropical Ant Wasmannia auropunctata (Roger 1863) (Hymenoptera: Formicidae: Myrmicinae)

Cytogenetic Studies on Workers of the Neotropical Ant Wasmannia auropunctata (Roger 1863) (Hymenoptera: Formicidae: Myrmicinae)

Wasmannia auropunctata is known as one of the worst invasive ants in the World. A cytogenetic study was conducted on two native populations from southeastern Bahia, Brazil. The analysis of the chromosomes observed in mitotic metaphases was made by a combination of methods: Giemsa conventional staini...

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Bibliographic Details
Published in:Annales de la Société entomologique de France Vol. 47; no. 3-4; pp. 510 - 513
Main Authors: de Souza, Ana Lúcia Biggi, Mariano, Cléa dos Santos Ferreira, Delabie, Jacques Hubert Charles, Pompolo, Sílvia das Graças, Serrão, José Eduardo
Format: Journal Article
Language:English
Published: Paris Taylor & Francis Group 2011
Société entomologique de France
Subjects:
acridine orange
Animals
ant
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
DAPI and CMA bands
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Invertebrata
Karyotype
NORs
Formicidae
Arthropoda
Insecta
Cytogenetics
Hymenoptera
Social insect
Invertebrata
Formicoidea
Karyotype
Aculeata
Worker insect
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Summary:Wasmannia auropunctata is known as one of the worst invasive ants in the World. A cytogenetic study was conducted on two native populations from southeastern Bahia, Brazil. The analysis of the chromosomes observed in mitotic metaphases was made by a combination of methods: Giemsa conventional staining, chromomycin A3 (CMA3) and 4-6-diamidino-2-phenylindole (DAPI) fluorochrome staining, and acridine orange banding. The workers have all the karyotype 2n=32, with ten pairs of metacentric and six pairs of acrocentric chromosomes. One chromosome arm of the pair ten was positive for CMA3 and acridine orange, suggesting the occurrence of a nucleolar organizing region. This region is an interesting marker because is very conservative and seems to constitute an interesting specific taxonomic character. The pericentromeric region of many chromosomes was stained with DAPI, evidencing the occurrence of AT bases rich heterochromatin.
ISSN:0037-9271
2168-6351
DOI:10.1080/00379271.2011.10697742