The PCR amplification of CHD-Z and CHD-W genes with primers P2-P8 and 2550F-2718R, allowed the differentiation of males from females of seven species (Synallaxis azarae, S. brachyura, Xenops minutus, Dendrocincla tyrannina, Lepidocolaptes lacrymiger, Campylorhampus trochilirostris, C. pusillus), from which there was not previous report of molecular sexing.
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