Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/60601
Type: Artigo de periódico
Title: Inversion polymorphism and a new polytene chromosome map of Zaprionus indianus Gupta (1970) (Diptera : drosophilidae)
Author: Ananina, G
Rohde, C
David, JR
Valente, VLS
Klaczko, LB
Abstract: Zaprionus indianus is a recent invader in Brazil and was probably introduced from the West Afrotropical zone. So far, studies regarding its chromosomal polymorphism were limited to India. We found that Brazilian populations were very different from Indian ones. Five new inversions have been discovered. In(II)A, already described in India, where it is quite common, has also been found in Brazil, where it is very rare. The X-chromosome has three inversions; In(X)Na, In(X)Ke and In(X)Eg, which are frequent in all Brazilian populations studied. In every case, we observed strong linkage disequilibrium among these gene arrangements. During the primary collection period (2001-2002), we noticed a significant positive correlation between the frequency of these inversions and latitude, but this was not confirmed in later investigations. Rearrangement In(IV)EF was also common in all populations, while inversion In(V)B was only found in southern populations. Our data suggest that the founders that recently invaded Brazil were polymorphic for the six inversions observed. The place of origin might be identified more precisely by investigating West African populations. In order to facilitate further investigations, we present an updated polytene chromosome photomap, locating the breakpoints of every inversion observed in Brazilian populations.
Subject: chromosomal polymorphism
haplotype
introduced species
invasion
inversion breakpoints
linkage disequilibrium
Country: Holanda
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/s10709-006-9121-6
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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