EVALUACIÓN DE LA VARIABILIDAD GENÉTICA DE «shihuahuaco» Dipteryx ferrea (Ducke) Ducke EN LA AMAZONÍA PERUANA, MEDIANTE MARCADORES MICROSATÉLITES

Translated title of the contribution: EVALUATION OF THE GENETIC VARIABILITY OF «shihuahuaco» Dipteryx ferrea (Ducke) Ducke IN THE PERUVIAN AMAZON, USING MICROSATELITES MARKERS

Rossana Diaz Soria, Eurídice N. Honorio Coronado, David Aldana, Dennis Del Castillo Torres, Gabriel Hidalgo Pizango, Carlos Angulo Chavez, Eduardo Mejía De Loayza, Diana Castro-Ruiz, Mayra Flores Silva, Jean François Renno, Carmen García-Dávila

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We studied the genetic variability of Dipteryx ferrea shihuahuaco in seven natural populations from the Peruvian Amazon using nine microsatellite loci. The results showed a high genetic diversity shown by the high polymorphism (total alleles = 135, mean alleles per locus = 15 ± 6 alleles) and allelic richness (Macuya = 11 and Iñapari = 8, maximum and minimum allelic richness, respectively). The analysis of principal components showed a strong overlap among the populations, which added to the low values of interpopulation genetic distance (from 0.07 to 0.10), reveals a high genetic similarity among populations. The dendrogram based on the genetic distance of Shared Allele showed populations clustered in three main groups, the first formed by Manu and Iñapari populations (group A, bootstrap = 91%), the second by Contamana and Macuya (group B, 60%), and the third by Tamaya, Santa Clara e Inuya (group C, 100%). The correlation analysis showed that there is a positive correlation between geographic distance and genetic distance among pairs of populations (r = 0.62, p<0.005). The high genetic similarity among populations found in this species can be attributed to the allogamous reproduction system (cross-pollination) of Shihuahuaco, to its pollinators (bats, bees) and dispersers (macaws, eagles, peccaries, etc.) that can travel long distances, which facilitates the gene flow among populations. Historical factors such as the tectonic activity of the study area also influenced the genetic relationships observed among the populations, distinguishing closely related genetic groups such as A and B that cover a large part of the geographical distribution of the species and a differentiated group (group C) located in a more recent developed area in the department of Ucayali.

Translated title of the contributionEVALUATION OF THE GENETIC VARIABILITY OF «shihuahuaco» Dipteryx ferrea (Ducke) Ducke IN THE PERUVIAN AMAZON, USING MICROSATELITES MARKERS
Original languageSpanish
Pages (from-to)53-64
Number of pages12
JournalFolia Amazonica
Volume28
Issue number1
DOIs
Publication statusPublished - Jan 2019

Keywords

  • gene flow
  • polymorphism
  • polyploid
  • population structure

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