International Journal of Molecular Sciences (Apr 2012)

Isolation and Characterization of Twelve Polymorphic Microsatellite Loci for the Cocoa Mirid Bug Sahlbergella Singularis

  • Marie-Pierre Chapuis,
  • Ange-Marie Risterucci,
  • Caroline Calatayud,
  • Laurence Blondin,
  • Thierry Legavre,
  • Catherine Fenouillet,
  • Régis Babin

DOI
https://doi.org/10.3390/ijms13044412
Journal volume & issue
Vol. 13, no. 4
pp. 4412 – 4417

Abstract

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Mirids are the primary pests affecting cocoa production in Africa, but no genetic studies have been conducted on these insects. Here we report the isolation and characterization of 12 polymorphic microsatellite loci for Sahlbergella singularis. A microsatellite-enriched genomic DNA library was developed and screened to identify marker loci. Twelve polymorphic loci were identified by screening 28 individuals collected from one presumed population in cocoa plantations in Southern Cameroon. The number of alleles ranged from 5 to 25, whereas the observed and the expected heterozygosities ranged from 0.179 to 0.786 and from 0.671 to 0.946, respectively. Tests showed significant deviations from HW equilibrium for four loci, but no linkage disequilibrium was detected at any of the loci. No cross-species amplification was observed in two other mirid pests in Africa.

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