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Browsing by Author "Cruz-Bernate L"

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    Dimorfismo sexual críptico en Sicalis flaveola (Aves: Thraupidae) en el trópico
    (Universidad de Caldas, 2021-01-01) Espinosa C; Castro I; Cruz-Bernate L
    The morphometric differences between the sexes in Sicalis flaveola from Valle del Cauca, southwest Colombia were evaluated. Sex was determined using molecular methods, reproductive behavior and morphological characters. A discriminant function analysis was carried out on 12 body measurements from individuals with mature plumage. Body measurements were very similar between the sexes in line with what was expected from monogamous passerines. Males were significantly larger than females in wings, rectrices, and distance between primary and secondary wing feathers while females had significantly wider beaks than males. An equation was found that that allows the identification of sex with an accuracy of 77.8 %. The morphometric method is proposed as an alternative of lower physiological and economic cost compared to molecular methods for determining the sex of individuals of the species. Se evaluaron las diferencias morfométricas entre sexos en individuos de Sicalis flaveola en el Valle del Cauca, suroccidente de Colombia. El sexo se determinó a partir de métodos moleculares, comportamiento reproductivo y caracteres morfológicos. Se realizó un análisis de función discriminante a partir de 12 medidas corporales de individuos adultos con plumaje maduro. Las medidas corporales fueron muy similares entre los sexos, acorde a lo esperado en paserinos monógamos. Los machos fueron significativamente más grandes que las hembras en alas, rectrices y distancia entre primarias y secundarias; mientras que las hembras tuvieron picos significativamente más anchos que los machos. Se encontró una ecuación que permite identificar el sexo con una exactitud del 77,8 %. Se propone el método morfométrico como una alternativa de menor costo fisiológico y económico en comparación con métodos moleculares para la determinación del sexo de individuos de la especie.

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