Pilar Arana

Publications (2)3.76 Total impact

• Article: Mitochondrial DNA sequence variability in red-legged partridge, Alectoris rufa , Spanish populations and the origins of genetic contamination from A. chukar

  María Martínez-Fresno, Nuno Henriques-Gil, Pilar Arana
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  ABSTRACT: The analysis of 135 mitochondrial D-loop sequences of the Iberian autochthonous red-legged partridge (Alectoris rufa) from wild population hunting bags from various locations and fowl runs in Spain yielded 37 different haplotypes. Among these, three haplotypes correspond to chukar partridges (Alectoris chukar), indicating genetic introgression from birds illegally introduced for restocking: three individuals carrying such haplotypes where found in natural populations, one appeared among those sampled on a mass reproduction farm and the remaining 10 in another fowl-run. The geographical origin of the contaminating chukar haplotypes could be assigned to the most easterly area of the chukar partridge geographical distribution in China. Molecular diversity parameters in the A. rufa samples indicate a considerable amount of genetic variation. ΦST showed significant differences among populations that are not explained by geographical distance alone. Particularly, one northern population (Palencia) shows a certain degree of genetic differentiation that could reflect a previously suggested subspecies division.
  Conservation Genetics 01/2008; 9(5):1223-1231. · 1.61 Impact Factor
• Article: The effect of B chromosomes on mating success of the grasshopper Eyprepocnemis plorans

  Silvia Martín, Pilar Arana, Nuno Henriques-Gil
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  ABSTRACT: The mating ability of E. plorans was tested in laboratory conditions in six experimental units composed of ten males and fifteen females during 31 days. When significant differences were found (three from the six cages, and in totals) they involved a decrease of matings involving males with B chromosomes. The same tendency seems to exist in females, but to a lesser extent, so that a significant effect is only detected when the totals are considered. Accessory chromosomes also delay, in both sexes, the occurrence of the first mating. No mating preferences depending on the number of Bs were detected.
  Genetica 02/1996; 97(2):197-203. · 2.15 Impact Factor