
pmid: 15162699
handle: 11449/67224
Con frecuencia, en la familia Ramphastidae no hay un dimorfismo sexual aparente, excepto en Pteroglossus viridis y en el género Selenidera. Muchos criadores de aves silvestres creen que los especímenes de Ramphastos toco pueden ser sexados usando las caracteríticas del pico. En este estudio, fueron analizadas algunas variables fenotípicas discriminantes en aves cuyo sexo fue previamente determinado con metodos citogenéticos. Un total de 51 especimenes de R. toco y 20 de R. dicolorus fueron estudiados. Los parámetros estadísticos significativos que son útiles para distinguir el sexo en estas especies son la longitud del culmen y del tomium, la longitud del pico corneo inferior y de la cloaca. Usando estos parámetros, los criadores de aves cautivas pueden sexar los especimenes de Ramphastos toco mediante análisis fenotípico y formar parejas reproductoras más rapidamente.
Phenotypic sexual dimorphism seems to be rare in the Ramphastidae family, except in Pteroglossus viridis and in the genus Selenidera. Many breeders of wild birds believe that specimens of Ramphastos toco can be sexed using bill characteristics. In this study, various discriminant phenotypic variables were analyzed in birds which were sexed cytogenetically. Fifty-one specimens of R. toco and 20 R. dicolorus were studied. The statistically significant parameters which served to distinguish the sex in these species were the length of the culmen and tomium, length of the lower corneous beak and the cloaca. Using these parameters, capitive bird breeders can determine sex of R. toco specimens by phenotypic analysis and form breeding couples more quickly.
Male, bird, Ramphastos dicolorus, phenotype, QH301-705.5, 590, Enterobacter, Pteroglossus viridis, Ramphastidae, histology, Birds, Sexual dimorphism, male, sexual development, Selenidera, Animalia, Animals, animal, genetics, Piciformes, Biology (General), Sex Characteristics, ramphastos, ramphastidae, Beak, female, Phenotype, sexual dimorphism, beak, Ramphastos, Female, Aves, Ramphastos toco
Male, bird, Ramphastos dicolorus, phenotype, QH301-705.5, 590, Enterobacter, Pteroglossus viridis, Ramphastidae, histology, Birds, Sexual dimorphism, male, sexual development, Selenidera, Animalia, Animals, animal, genetics, Piciformes, Biology (General), Sex Characteristics, ramphastos, ramphastidae, Beak, female, Phenotype, sexual dimorphism, beak, Ramphastos, Female, Aves, Ramphastos toco
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