Mutations in the melanocortin-1 receptor (MC1R) gene have no influence on the distinct patterns of melanic plumage found in the manakins of the genus Antilophia (Aves: Pipridae)
Document title: Mutations in the melanocortin-1 receptor (MC1R) gene have no influence on the distinct patterns of melanic plumage found in the manakins of the genus Antilophia (Aves: Pipridae)
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000424390
ISSN: 0001-3765
Authors: 1
2
1
3
4
1
1
1
Institutions: 1Universidade Federal do Para, Instituto de Estudos Costeiros, Braganca, Para. Brasil
2Associacao de Pesquisa e Preservacao de Ecossistemas Aquaticos, Caucaia, Ceara. Brasil
3Pontificia Universidade Catolica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul. Brasil
4Universidade de Sao Paulo, Instituto de Biociencias, Sao Paulo. Brasil
Year:
Season: Sep
Volumen: 90
Number: 3
Pages: 2873-2880
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The melanocortin-1 receptor gene is the most widely-used marker for the investigation of the genetic determination of melanic plumage patterns. Studies of a number of wild bird species have shown an association between non-synonymous mutations of the MC1R gene and the presence of melanic variants. The genus Antilophia (Pipridae) includes only two manakin species (A. galeata and A. bokermanni), which are distinguished primarily by the differences in the pattern of melanic coloration of the plumage of the mantle in the adult males. In A. galeata, this plumage is black, while in A. bokermanni, it is predominantly white. This study investigates the possible association between mutations of the MC1R marker and the variation in plumage coloration observed in the two species. The MC1R sequences of the two species was analyzed, and the observed nucleotide variation was compared. Six polymorphic sites were identified, representing seven distinct genotypes. Five of these polymorphic mutations were non-synonymous, but were not related to the different phenotypes. Neutral evolution and the absence of any systematic association between the variants of the MC1R and plumage coloration in the Antilophia species indicate that alternative mechanisms regulate the expression of the coloration of the plumage in the adult males
Disciplines: Biología
Keyword: Aves,
Genética,
Aves silvestres,
Plumaje,
Melanismo,
Evolución neutral,
Antilophia galeata,
Antilophia bokermanni,
Pipridae
Keyword: Birds,
Genetics,
Wild birds,
Plumage,
Melanism,
Neutral evolution,
Antilophia galeata,
Antilophia bokermanni,
Pipridae
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