Population genetics ofEulemur macaco macaco (Primates: Lemuridae) on the islands of Nosy-Be and Nosy-Komba and the Peninsula of Ambato (Madagascar) |
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Authors: | C Rabarivola B Meier C Langer W Scheffrahn Y Rumpler |
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Institution: | 1. Faculté des Sciences, Université de Majunga, Majunga, Madagascar 2. Université Louis Pasteur, Institut d'Embryologie, Faculté de Médecine, 11 rue Humann, 67085, Strasbourg, Cedex, France 3. Ruhr-Universit?t, Medizinische Fakult?t, Universit?tstra?e 150, 4630, Bochum, Germany 4. Universit?t Zürich, Winterthurerstra?e 190, 8057, Zürich, Switzerland
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Abstract: | Analysis for genetic variation of insular and mainland populations ofEulemur macaco has revealed: (1) a different degree of genetic variation between populations; and (2) the phylogenetic relationships between
groups, on the islands of Nosy-Be and Nosy-Komba, and in the Peninsula of Ambato (Madagascar). Eleven systems of blood proteins
from 157 animals were used as genetic markers. The genetic variation was lower on the island of Nosy-Komba than in the mainland
of Ambato. This is consistent with the expectation that genetic variation is lower on islands than on mainlands. In contrast,
the genetic variation on the island of Nosy-Be was the highest of the three populations. This finding can best be explained
by assuming that the sample of Nosy-Be consists of individuals of several small isolated groups, where genetic drift computation
showed the population of Nosy-Be to be distinct, and the populations of Nosy-Komba and Ambato to be close within the same
branch of the dendrogram. These findings give an insight into the population history of the island of Nosy-Komba, which might
have been populated by mainland groups from Ambato. |
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Keywords: | Eulemur macaco Island populations Protein markers Founder effect Genetic variation Genetic drift |
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