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Multilocus enzyme analysis of the genetic variability and population structure was conducted among three malaria vector species of the Anopheles nili group in Cameroon: An. nili, An. carnevalei, and the recently described An. ovengensis. We detected species-specific alleles and large differences in shared allele frequencies at six of nine loci (e.g., PGM, GOT1, IDH1, IDH2, PGI, and
-GPD). This non-random distribution of alleles leads to high and significant values of differentiation indexes (0.569 < Fst < 0.874, P < 104). These results fully agree with standard morphologic descriptions, and therefore provide further support for recent taxonomic classification within the An. nili group.
Received March 7, 2006. Accepted for publication May 31, 2006.
Acknowledgments: The authors thank Maïte Marquine, Maurice Adja Akré, Vohahirana Rajaonarivelo, and Jean Claude Toto for technical assistance during mosquito collections and laboratory processing.
Financial support: This work received financial support from the UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (TDR-REG N° 990831), the Pal+ French Ministry of Research, and the French Institut de Recherche pour le Développement (IRD).
* Address correspondence to Herman P. Awono-Ambene, Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon. E-mail: hpaawono{at}yahoo.fr
Authors addresses: Herman Parfait Awono-Ambene, Frédéric Simard, and Christophe Antonio-Nkondjio, Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon, Telephone: (+237) 223-2232, Fax: (+237) 223-0061. Anna Cohuet, Pierre Kengne, and Didier Fontenille, Institut de Recherche pour le Développement (IRD), Research Unit 016, Laboratoire de Lutte contre les Insectes Nuisibles (LIN), 911 av. Agropolis, BP 64501, 34 394 Montpellier Cedex 5, France, Telephone: (+33)4-6704-1924, Fax: (+33)4-6754-2044.
Reprint requests: Herman P. Awono-Ambene, Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon, Telephone: (+237) 223-2232, Fax: (+237) 223-0061, E-mail: hpaawono{at}yahoo.fr
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