Artigo Acesso aberto Revisado por pares

Cytotaxonomy of the Genus Dichromatos Cigliano 2007 (Orthoptera, Acridoidea, Melanoplinae)

2010; Pensoft Publishers; Volume: 19; Issue: 2 Linguagem: Inglês

10.1665/034.019.0208

ISSN

1937-2426

Autores

Amilton Ferreira, Alejo Mesa,

Tópico(s)

Phytoplasmas and Hemiptera pathogens

Resumo

All four species of the genus Dichromatos now cytologically analyzed, including D. montanus and D. corupa (Cigliano 2007), studied in the present paper, are 2n = 21(♂)/22(—) (FN = 23/24) with a X1X2Y ♂ / X1X1X2X2 ♀ sex-determination mechanism. The possibility that this mechanism arose from a single ancestral species from which a rapid process of speciation and dispersion took place is discussed.

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