Genetic distances and taxonomic trees between goats of Ceará State (Brazil) and goats of the Mediterranean region (Europe and Africa)
Goats of an undefined breed (called UDB) from the State of Ceará, northeastern Brazil (N = 447), European Mediterranean goats (N = 3,847) and African Mediterranean goats (N = 325) were compared to establish genetic distances and taxonomic trees. Allelic frequencies in each population for presence or...
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Veröffentlicht in: | Genetics and molecular biology 2000-03, Vol.23 (1), p.121-125 |
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Zusammenfassung: | Goats of an undefined breed (called UDB) from the State of Ceará, northeastern Brazil (N = 447), European Mediterranean goats (N = 3,847) and African Mediterranean goats (N = 325) were compared to establish genetic distances and taxonomic trees. Allelic frequencies in each population for presence or absence of the following traits were used: horns, reduced ears, long hair, wattles, beard, roan color, brown eumelanin and eumelanic standard pigmentation. The genetic distance, applying the method developed by Nei (1972), was: least between goats from different meso-regions of the State of Ceará (0.0008 to 0.0120); small between all UDB of Ceará and French goats of Rove and Haute Roya (0.0236 and 0.0459); greater between all UDB of Ceará and northern Spanish goats (0.1166), and greatest between all UDB of Ceará and northern African goats (Moroccan of Drâa, Rhâali and Zagora), Balkan goats (Sakhar from Bulgaria and Macedonia from Greece) and some insular Mediterranean populations (Corsica, Sicily and Sardinia), which ranged from 0.1237 to 0.2714. Brazilian UDB goats are more closely related to Continental and Western European populations than to North African, Balkan or Insular Mediterranean populations.
Foram comparadas cabras do tipo Sem Raça Definida ou UDB do Ceará (N = 447), nordeste do Brasil, cabras mediterrâneas européias (N = 3847) e mediterrâneas africanas (N = 325) visando o estabelecimento de distâncias genéticas e de árvores taxonômicas. Foram utilizadas as freqüências alélicas em cada população para a presença ou ausência dos caracteres cornos, orelhas reduzidas, pêlos longos, brincos, barba, pelagem ruão, eumelanina de coloração castanha e padrão pigmentar eumelânico. As distâncias genéticas segundo o método de Nei (1972) são: as menores entre as cabras de diferentes mesorregiões do Ceará (0,0008 a 0,0120); pequenas entre o conjunto das UDB do Ceará e as cabras francesas do Rove e do Alto Roya (0,0236 e 0,0459); grande entre o conjunto das cabras UDB do Ceará e as cabras do norte da Espanha (0,1166); as maiores entre o conjunto das cabras UDB do Ceará e as cabras norte-africanas (marroquinas do Drâa, Rhâali e Zagora), balcânicas (Sakhar da Bulgária e Macedônia da Grécia) e algumas populações insulares (Córsega, Sicília, Sardenha) mediterrâneas (0,1237 a 0,2714). As cabras brasileiras UDB estão mais aparentadas com as populações européias do oeste do continente do que com as populações caprinas norte-africanas, balcânicas ou mediterrâneas insulare |
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ISSN: | 1415-4757 1678-4685 1415-4757 1678-4685 |
DOI: | 10.1590/S1415-47572000000100022 |