Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique
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| Formato: | Online |
| Idioma: | eng |
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Universidad de Costa Rica
2008
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5749 |
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RBT5749 |
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RBT57492022-06-06T18:05:27Z Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique Monnerat Nogueira, Denise Alice S. Alves, Maria identificación de sexos color del iris genes CHD Ramphocelus bresilius Passeriformes Molecular sexing iris colour CHD-gene The Brazilian tanager, Ramphocelus bresilius is an endemic species from Brazil that is sexually dimorphic in adult plumage. Young males are similar to adult and young females until their second year. Adults and young females are not distinguishable in plumage. We tested whether iris colour can be used to separate adult females from immature females. We used for the first time the molecular sexing technique based on CHD genes to confirm the sex of the individuals classified as "female plumage with red iris", and to identify the sex of individuals classified as "female plumage and brown iris". The adult males were used as a positive control. DNA samples from 190 individuals were analyzed. The sizes of the PCR products were identified as 350 base pairs (bp) for CHD-Z and 388 bp for CHD-W. We confirmed that adult females have a red iris and the young females a brown iris. We could also separate young males and females which present the same iris colour and plumage. Although there are indications that the iris colour can be used by birds to identify the adults in co-operative breeding species such as the Brazilian tanager, more behavioural data are required to understand the role of iris coloration in this species. Universidad de Costa Rica 2008-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5749 10.15517/rbt.v56i4.5749 Revista de Biología Tropical; Vol. 56 No. 4 (2008): Volume 56 – Regular number 4 – December 2008; 1629–1633 Revista de Biología Tropical; Vol. 56 Núm. 4 (2008): Volumen 56 – Número regular 4 – Diciembre 2008; 1629–1633 Revista Biología Tropical; Vol. 56 N.º 4 (2008): Volume 56 – Regular number 4 – December 2008; 1629–1633 2215-2075 0034-7744 10.15517/rbt.v56i4 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5749/5490 Copyright (c) 2008 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Monnerat Nogueira, Denise Alice S. Alves, Maria |
| spellingShingle |
Monnerat Nogueira, Denise Alice S. Alves, Maria Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique |
| author_facet |
Monnerat Nogueira, Denise Alice S. Alves, Maria |
| author_sort |
Monnerat Nogueira, Denise |
| title |
Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique |
| title_short |
Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique |
| title_full |
Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique |
| title_fullStr |
Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique |
| title_full_unstemmed |
Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique |
| title_sort |
iris colour as an indicator of age feature in female brazilian tanagers (passeriformes: emberizidae) confirmed by a molecular sexing technique |
| title_alt |
Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique |
| publisher |
Universidad de Costa Rica |
| publishDate |
2008 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5749 |
| work_keys_str_mv |
AT monneratnogueiradenise iriscolourasanindicatorofagefeatureinfemalebraziliantanagerspasseriformesemberizidaeconfirmedbyamolecularsexingtechnique AT alicesalvesmaria iriscolourasanindicatorofagefeatureinfemalebraziliantanagerspasseriformesemberizidaeconfirmedbyamolecularsexingtechnique |
| _version_ |
1810114569697230848 |