What is it about?

We used several approaches to perform a detailed comparison of sex chromosomes in 3 cotton stainers of the genus Dysdercus , namely D. chaquensis and D. ruficollis with the original X0 system, and D. albofasciatus with the derived neo-Xneo-Y system.

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Why is it important?

The neo-X and neo-Y sex chromosomes of Dysdercus albofasciatus represent a unique model for the study of early stages of sex chromosome evolution since they retained the ability to pair and recombine, in contrast to sex chromosomes in most Heteroptera (true bugs).


Writing this article was a great pleasure as it has co-authors with whom I have had long-standing collaborations. This article also allowed me to explore original and novel aspects of the sex chromosomes in true bugs and led to further involvement in the research on the degree of differentiation of sex chromosomes into single, multiple, and neo-sexual systems.

Dr. María José Bressa
IEGEBA, Depto.Ecología, Genética y Evolución Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires

Read the Original

This page is a summary of: Sex Chromosome Evolution in Cotton Stainers of the Genus Dysdercus (Heteroptera: Pyrrhocoridae), Cytogenetic and Genome Research, January 2009, Karger Publishers, DOI: 10.1159/000235936.
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