Molecular evidence for three genetic species of Dipteryx in the Peruvian Amazon

• Autores: García Dávila, Carmen, Aldana Gomero, David, Renno, Jean-François, Díaz Soria, Rossana, Hidalgo Pizango, Gabriel, Flores Llampazo, Gerardo, Castro Ruiz, Diana, Mejía de Loayza, Eduardo, Angulo Chávez, Carlos, Mader, Malte, Tysklind, Niklas, Paredes Villanueva, Kathelyn, Del Castillo Torres, Dennis, Degen, Bernd, Honorio Coronado, Eurídice
• Formato: artículo
• Fecha de Publicación: 2019
• Institución: Instituto de investigaciones de la Amazonía Peruana
• Repositorio: IIAP-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.iiap.gob.pe:20.500.12921/418
• Enlace del recurso: https://hdl.handle.net/20.500.12921/418; https://doi.org/10.1007/s10709-019-00082-2
• Nivel de acceso: acceso abierto
• Materia: Dipteryx charapilla; Dipteryx micrantha; Variación genética; Distancia genética; Microsatélites; Secuencia de ADN; Dipteryx; Genotipos; Loreto; Ucayali; Madre de Dios; Amazonía

There is a high international demand for timber from the genus Dipteryx, or “shihuahuaco” as it is known in Peru. Developing tools that allow the identification and discrimination of Dipteryx species is therefore important for supporting management of natural populations and to underpin legal trade of its timber. The objective of this study was the molecular characterization of Dipteryx species in the Peruvian Amazonia. Two plastid regions (cpDNA: trnH–psbA and matK) were sequenced and 11 microsatellite markers (nDNA) were genotyped for 32 individuals identified as Dipteryx charapilla, D. micrantha morphotype 1 and D. micrantha morphotype 2. Using the concatenated sequences of the plastid genes, we identified ten haplotypes that were not shared between the species or between the D. micrantha morphotypes. Haplotypic diversity was greater in D. micrantha morphotype 2 and D. charapilla than in D. micrantha morphotype 1, which presented only one haplotype with a wide distribution in Peru. The microsatellites allowed the discrimination of the same three clades and identified diagnostic alleles for each clade. These results allowed us to demonstrate that the two morphotypes of D. micrantha are different at both the plastid and nuclear markers, which supports the existence of three genetically distinct species in Peru. This study provides information for the genetic discrimination of Dipteryx species and emphasises the importance of conserving the genetic variability of this genus in the Peruvian Amazonia.