Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/12405
Tipo: Artigo
Título: Mesoamerican origin and pre- and post-columbian expansions of the ranges of Acanthoscelides obtectus say, a cosmopolitan insect pest of the common bean
Autor(es): Oliveira, Márcia Rodrigues Carvalho
Corrêa, Alberto Soares
Souza, Giselle Anselmo de
Guedes, Raul Narciso Carvalho
Oliveira, Luiz Orlando de
Abstract: An unprecedented global transfer of agricultural resources followed the discovery of the New World; one consequence of this process was that staple food plants of Neotropical origin, such as the common bean (Phaseolus vulgaris), soon expanded their ranges overseas. Yet many pests and diseases were also transported. Acanthoscelides obtectus is a cosmopolitan seed predator associated with P. vulgaris. Codispersal within the host seed seems to be an important determinant of the ability of A. obtectus to expand its range over long distances. We examined the phylogeographic structure of A. obtectus by (a) sampling three mitochondrial gene sequences (12s rRNA, 16s rRNA, and the gene that encodes cytochrome c oxidase subunit I (COI)) throughout most of the species’ range and (b) exploring its late evolutionary history. Our findings indicate a Mesoamerican origin for the current genealogical lineages of A. obtectus. Each of the two major centers of genetic diversity of P. vulgaris (the Andes and Mesoamerica) contains a highly differentiated lineage of the bean beetle. Brazil has two additional, closely related lineages, both of which predate the Andean lineage and have the Mesoamerican lineage as their ancestor. The cosmopolitan distribution of A. obtectus has resulted from recent expansions of the two Brazilian lineages. We present additional evidence for both pre-Columbian and post-Columbian range expansions as likely events that shaped the current distribution of A. obtectus worldwide.
Palavras-chave: Acanthoscelides obtectus
Cosmopolitan
Editor: PLOS ONE
Tipo de Acesso: Open Access
URI: https://doi.org/10.1371/journal.pone.0070039
http://www.locus.ufv.br/handle/123456789/12405
Data do documento: 31-Jul-2013
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