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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Triploidy in a sexually dimorphic passerine provides new evidence for the effect of the W chromosome on secondary sexual traits in birds

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Author(s):
de Camargo, Crisley [1] ; Lisle Gibbs, H. [2] ; Costa, Mariellen C. [3] ; Silveira, Luis F. [4] ; Rainho, Claudia A. [1] ; Ribolla, Paulo E. M. [5] ; Wasko, Adriane P. [1] ; Francisco, Mercival R. [6]
Total Authors: 8
Affiliation:
[1] Univ Estadual Paulista, Inst Biociencias, Dept Genet, Botucatu, SP - Brazil
[2] Ohio State Univ, Dept Evolut Ecol & Organismal Biol, Columbus, OH 43210 - USA
[3] Univ Fed Sao Carlos, Programa Posgrad Ecol & Recursos Nat, Sao Carlos, SP - Brazil
[4] Univ Sao Paulo, Secao Aves, Museu Zool, Sao Paulo, SP - Brazil
[5] Univ Estadual Paulista, Inst Biotecnol, Botucatu, SP - Brazil
[6] Univ Fed Sao Carlos, Dept Ciencias Ambientais, Sorocaba, SP - Brazil
Total Affiliations: 6
Document type: Journal article
Source: JOURNAL OF AVIAN BIOLOGY; v. 48, n. 11, p. 1475-1480, NOV 2017.
Web of Science Citations: 1
Abstract

In birds, there are two main models for the determination of sex: the Z Dosage' model in which the number, or dose, of Z chromosomes determines sex, and the Dominant W' model which argues that a specific gene in the W chromosome may influence Z gene expression and determine sex. The best evidence for W determination of sex comes from birds with 2 copies of the Z chromosome paired with a single W (e.g. ZZW) which are nonetheless females. Here, we expand the species where such a mechanism may operate by reporting a case of a triploid Neotropical passerine bird with sexually dimorphic plumage, the SAo Paulo marsh antwren Formicivora paludicola. Evidence from 17 autosomal unlinked microsatellite loci, and CHD1 sex-linked locus, indicate that this individual is a 3n ZZW triploid with intermediate plumage pattern. This example expands our knowledge of sex determination mechanisms in birds by demonstrating that both the W and the two Z chromosomes affect the expression of morphological secondary sexual traits in a non-galliform bird. (AU)

FAPESP's process: 12/09105-7 - Populational analysis of the bicudinho-do-brejo-paulista, Formicivora aff. acutirostris (Passeriformes: Thamnophilidae): a new discovered species in High Tietê, São Paulo, Brazil
Grantee:Crisley de Camargo
Support Opportunities: Scholarships in Brazil - Master