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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 30, No. 3, 2009, pp. 247-254
Bioline Code: zr09039
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 30, No. 3, 2009, pp. 247-254

 en Allozyme Polymorphism and Genetic Differentiation Among Populations of Jaculus jaculus check for this species in other resources and J. orientalis (Rodentia: Dipodidae) in Tunisia
Faleh, Abderraouf Ben; Shahin, Adel A.B. & Said, Khaled

Abstract

Genetic variability and divergence among natural populations of Jaculus jaculus check for this species in other resources and J. orientalis in Tunisia were examined by electrophoretic analysis of 16 enzymatic proteins encoded by 23 genetic loci. Low levels of genetic variability were found among populations of both species in comparison to those of other rodent and mammal species of which data are available. In J. jaculus populations, the mean level of observed heterozygosity (Hobs) ranged from 0.08 to 0.19, while the mean percentage of polymorphic loci (P) ranged from 26.2% to 45.2% and the mean number of alleles per locus (A) ranged from 1.1 to 1.4. Nevertheless, the mean values were 0.10 to 0.15, 29.3% to 44.1% and 1.1 to 1.7, respectively, for J. orientalis. In addition, populations of the two species have revealed a lower degree of genetic differentiation (Fst=0.0017 for J. jaculus and 0.0019 for J. orientalis). Moreover, Fst was 0.607, P<0.05 between populations of the two species, indicating that they were highly genetically diverged from each other. The present data assures the previous results on the validity of the present taxonomic situation of the two species and emphasis on the effect of geographic factors (environments type and bioclimatic stages) on the genetic structure of both species.

Keywords
Dipodidae; Jerboas; Allozyme; Electrophoresis; Tunisia

 
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