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Low levels of genetic differentiation in mosquito (Culex quinquefasciatus) populations from Recife, Pernambuco, Brazil

Luiz Mauricio-da-Silva^I; Luciano Alves Marques^I; Gerusa Dreyer^II Zulia Medeiros^II; André Freire Furtado^II; Rosilda dos Santos Silva^I

^IDepartamento de Genética, CCB, Universidade Federal de Pernambuco, Caixa Postal 7818, 50732-970 Recife, PE. Brasil. Send correspondence to L.M.-S.
^IICentro de Pesquisas Aggeu Magalhães (CPqAM-FIOCRUZ), Campus da Universidade Federal de Pernambuco, Av. Moraes Rego s/n, Caixa Postal 7472, Recife, PE, Brasil. Fone: (081) 271-4000, Telex (81) 1932, Fax (081) 271-2302,50732-970

ABSTRACT

An allozymic survey of five populations of Culex quinquefasciatus (Diptera; Culicidae) in Recife, Pernambuco, Brazil, revealed very low levels of genetic differentiation in malate dehydrogenase, isocitrate dehydrogenase and phosphoglucomutase loci, judging from the low values of F_ST found. An explanation is proposed, based on seasonal change in population size, sanitation conditions and urban transport.

Keywords: genetic differentiation; mosquito; Culex quinquefasciatus.

REFERENCES

Bhalla, S.C. and Narang, S. (1981). Isozymes of Culex pipiens fatigans 3. Genetics of leucine aminopeptidase. Can. J. Genet. Cytol. 23: 705-714.

Cheng, M.L. and Hacker, C.S. (1979). The genetics of hexokinase in a mosquito Culex pipiens. Genetics 92: 903-914.

Curtis, D.F. and Feachem, R.G. (1981). Sanitation and Culex pipiens mosquitoes: a brief review. J. of Trop. Medicine and Hygiene 84: 17-25.

Dreyer, G. (1987). Filariasis Programme - Recife - Brazil. Mem. Inst. Osvaldo Cruz, vol. 82 supp IV: 3559-3560.

Harris, H. and Hopkinson, D.A. (1977). Handbook fo EnzymeElectrophoresis in Human Genetics. North Holland, Amsterdam.

Iqbal, M.P., Sakai, R.K. and Baker, R.H. (1973). The genetics of an esterase in Culex tritaeniorhynchus. Mosq. News 33: 72-75.

May, B. (1992). Starch gel electrophoresis of enzymes. In: Molecular Genetic Analysis of Populatisons (Hoelzen, A.H., ed.). Oxford Univ. Press, Oxford, pp. 345.

Medeiros, Z., Dreyer, G., Andrade, L.D., Pires, M.L., Mendes, J. and Pimentel, R. (1992). Wuchereria bancrofti microfilarial density of autochthonous cases and natural Culex infectivity rates in Northeast Brazil. J. Trop. Med. Hygiene 92: 214-217.

Narang, S., Bhalla, S.C. and Narang, N. (1977). Isozymes of Culex pipiens quinquefasciatus (Diptera; Culicidae). Part 2. Genetics of an alcohol dehydrogenase. J. Med. Entomol. 14: 479-483.

Pryor, S.C. and Ferrell, R.E. (1981). Biochemical genetics of the Culex pipiens complex 3. Alpha glycerophosphate dehydrogenase. Comp. Biochem. Physiol. (B) 69: 23-28.

Pryor, S.C., Cheng, M.L., Ferrell, R.E. and Hacker, C.S. (1980). Biochemical genetics of the Culex pipiens complex 1. 6-phosphogluconate dehydrogenase, E.C. 1.1.1.44. Comp. Biochem. Phydiol. (B) 65: 663-668.

Weir, B.S. and Cockerhan, C.C. (1984). Estimating F-statistics for the analysis of population structure. Evolution 38: 1350-1370.