Genetic structure of the genera Psorophora (Diptera: Culicidae) in Columbian and north American populations using isoenzymes and ITS2 sequences |
| |
Authors: | M Ruiz-Garcia F Bello D Ramirez D Alvarez |
| |
Institution: | (1) Unidad de Genetica (Genetica de Poblaciones-Biologia Evolutiva), Departamento de Biologia, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia;(2) Departmento de Biologia, Universidad de la Salle, Bogotá, Colombia |
| |
Abstract: | Two a priori Psorophora columbiae and one a priori Ps. toltecum populations from Colombia were studied by means of eleven isoenzyme loci. The levels of genetic diversity, Hardy-Weinberg
equilibrium, gene flow estimates, isolation by distance and genetic relationships among these three populations were studied
and the results were as follows: (1) The gene diversity levels were high as well as very similar among the three populations
indicating no differences between them. (2) Within each population and from a hierarchical standpoint several loci were not
in Hardy-Weinberg equilibrium simultaneously by excess and defect of heterozygous. This could reflect that several natural
selection forces are acting upon these mosquito populations. (3) The gene flow estimate for these populations showed the existence
of this event between them. This agrees quite well with the fact that the three populations really belong to a single species.
In addition, maximum parsimony analyses with 16 isoenzyme for several individuals from four Colombian and two United States
Psorophora populations showed that effectively only one species was present in the Colombian area surveyed, and that this species is
Ps. columbiae, which hardly contrast with that previously suggested by other authors.
The text was submitted by the authors in English. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|