MULTILOCUS ENZYME ELECTROPHORESIS SUPPORTS SPECIATION WITHIN THE ANOPHELES NILI GROUP OF MALARIA VECTORS IN CAMEROON

HERMAN P. AWONO-AMBENE Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), Yaoundé, Cameroon; Institute of Medical Research and studies of Medicinal Plants (IMPM), Ministry of Scientific Research and Innovation, Yaoundé, Cameroon; Institut de Recherche pour le Développement (IRD), Research Unit 016, Montpellier, France

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FRÉDÉRIC SIMARD Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), Yaoundé, Cameroon; Institute of Medical Research and studies of Medicinal Plants (IMPM), Ministry of Scientific Research and Innovation, Yaoundé, Cameroon; Institut de Recherche pour le Développement (IRD), Research Unit 016, Montpellier, France

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CHRISTOPHE ANTONIO-NKONDJIO Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), Yaoundé, Cameroon; Institute of Medical Research and studies of Medicinal Plants (IMPM), Ministry of Scientific Research and Innovation, Yaoundé, Cameroon; Institut de Recherche pour le Développement (IRD), Research Unit 016, Montpellier, France

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ANNA COHUET Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), Yaoundé, Cameroon; Institute of Medical Research and studies of Medicinal Plants (IMPM), Ministry of Scientific Research and Innovation, Yaoundé, Cameroon; Institut de Recherche pour le Développement (IRD), Research Unit 016, Montpellier, France

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PIERRE KENGNE Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), Yaoundé, Cameroon; Institute of Medical Research and studies of Medicinal Plants (IMPM), Ministry of Scientific Research and Innovation, Yaoundé, Cameroon; Institut de Recherche pour le Développement (IRD), Research Unit 016, Montpellier, France

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DIDIER FONTENILLE Organisation de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC), Yaoundé, Cameroon; Institute of Medical Research and studies of Medicinal Plants (IMPM), Ministry of Scientific Research and Innovation, Yaoundé, Cameroon; Institut de Recherche pour le Développement (IRD), Research Unit 016, Montpellier, France

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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 α-GPD). This non-random distribution of alleles leads to high and significant values of differentiation indexes (0.569 < Fst < 0.874, P < 10−4). These results fully agree with standard morphologic descriptions, and therefore provide further support for recent taxonomic classification within the An. nili group.

Author Notes

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@yahoo.fr
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