Sex chromosomes in mitotic and polytene tissues of Anastrepha fraterculus (Diptera, Tephritidae) from Argentina: a review

By

Giardini, María
Milla, Fabián
Lanzavecchia, Silvia Beatriz
Nieves, Mariela
Cladera, Jorge Luis

Type

Article

Date of Publication

2015

Original Publication

ZooKeys

Volume

540

Pages

83-94

Subjects

centromeres , Cytogenetics , heterochromatin , karyotype variants , ribosomal genes , south american fruit fly

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.540.6058

 

Abstract

Cytogenetics, which is considered a fundamental tool to understand basic genetic and genomic issues of species, has greatly contributed to the description of polymorphisms both at inter- and intra-specific level. In fact, cytogenetics was one of the first approaches used to propose Anastrepha fraterculus (Diptera: Tephritidae) as a complex of cryptic species. Different morphological variants of sex chromosomes have been reported among Argentinean populations of A. fraterculus. However, since this high structural variability in sex chromosomes does not pose a reproductive barrier, their role in speciation is yet to be unveiled. This review provides an update on general aspects of cytogenetics in Argentinean A. fraterculus populations, focused on the prevalence of X-Y arrangements.