Phylogeography of the bark beetle Dendroctonus mexicanus Hopkins ( Coleoptera: Curculionidae: Scolytinae). Anducho-Reyes MA(1). ABSTRACT: The Mexican pine beetle (XPB) Dendroctonus mexicanus, is recorded here for the first time as a new introduction for the United States (US). Semiochemicals of Dendroctonus mexicanus, the Mexican pine beetle. Phylum: Arthropoda. Subphylum: Uniramia. Class: Insecta. Order: Coleoptera. Family.

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Rinehart; Genetic Structure of Dendroctonus mexicanus Coleoptera: It is assumed that geographic isolation of Dendroctonus Erichson species populations or their plant hosts determines genetic structure.

This structure can be analyzed with respect to the biogeographic pattern that describes the species in a region. Dendroctonus mexicanus Hopkins is polyphagous within Pinus species and has a continuous geographic distribution across the TMVB. We explored whether the population genetic structure of D. Twelve gene dendrroctonus were analyzed by isozyme electrophoresis in 17 populations found on pines from the Leiophyllae subsection.


Allele frequencies, average heterozygosity, heterozygosity by locus, deviations from Hardy—Weinberg equilibrium HWEF-statistics among populations, and average genetic flow were calculated. Genetic structure was determined using the relationship between F ST versus geographic distances among populations.

Dendrogram reliability was assessed by bootstrap analysis and cophenetic correlation coefficient by using the Mantel test. Results show that heterozygosity of D.

Unasylva – Vol. 5, No. 4 – Pine bark beetles of Central Mexico

A high proportion of loci were out of HWE by homozygous excess, which may be explained by multiple factors. The scarce number of fixed alleles, the allele variation pattern, pairwise genetic distances, and F-statistics suggest a model of isolation by distance for D.

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Sign In or Create an Account. Close mobile search navigation Article navigation. Genetic Structure of Dendroctonus mexicanus Coleoptera: Abstract It is assumed that geographic isolation of Dendroctonus Erichson species populations or their plant hosts determines genetic structure.


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