Artículo
Spatial and host related genomic variation in partially sympatric cactophagous moth species
Poveda Martínez, Daniel Alexander
; Varone, Laura
; Fuentes Corona, Malena
; Hight, Stephen; Logarzo, Guillermo Alejandro; Hasson, Esteban Ruben
Fecha de publicación:
10/2021
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Molecular Ecology
ISSN:
0962-1083
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Surveys of patterns of genetic variation in natural sympatric and allopatric populations of recently diverged species are necessary to understand the processes driving intra- and interspecific diversification. The South American moths Cactoblastis cactorum, Cactoblastis doddi and Cactoblastis bucyrus are specialized in the use of cacti as host plants. These species have partially different geographic ranges and differ in patterns of host plant use. However, there are areas that overlap, particularly, in northwestern Argentina, where they are sympatric. Using a combination of genome-wide SNPs and mitochondrial data we assessed intra and interspecific genetic variation and investigated the relative roles of geography and host plants on genetic divergence. We also searched for genetic footprints of hybridization between species. We identified three well delimited species and detected signs of hybridization in the area of sympatry. Our results supported a hypothetical scenario of allopatric speciation in the generalist C. cactorum and genetic interchange during secondary geographic contact with the pair of specialists C. bucyrus and C. doddi that probably speciated sympatrically. In both cases, adaptation to new host plants probably played an important role in speciation. The results also suggested the interplay of geography and host plant use as drivers of divergence and limiting gene flow at intra and interspecific levels.
Palabras clave:
Cactoblastis
,
cactus pest
,
ddRAD
,
historical gene flow
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Poveda Martínez, Daniel Alexander; Varone, Laura; Fuentes Corona, Malena; Hight, Stephen; Logarzo, Guillermo Alejandro; et al.; Spatial and host related genomic variation in partially sympatric cactophagous moth species; Wiley Blackwell Publishing, Inc; Molecular Ecology; 31; 1; 10-2021; 356-371
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