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A sequential approach using genetic and morphological analyses to test species status: The case of United States federally endangered Agalinis acuta (Orobanchaceae

Pettengill, James B. ; Neel, Maile C.

American Journal of Botany, May 2011, Vol.98(5), pp.859-871 [Periódico revisado por pares]

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  • Título:
    A sequential approach using genetic and morphological analyses to test species status: The case of United States federally endangered Agalinis acuta (Orobanchaceae
  • Autor: Pettengill, James B. ; Neel, Maile C.
  • Assuntos: Agalinis Acuta ; Conservation ; Endangered Species Act ; Orobanchaceae ; Phylogenetics ; Population Genetics ; Sandplain Gerardia ; Species Concepts ; Species Delimitation
  • É parte de: American Journal of Botany, May 2011, Vol.98(5), pp.859-871
  • Descrição: : Given that inaccurate taxonomy can have negative consequences for species of conservation concern and result in erroneous conclusions regarding macroecological patterns, efficient methods for resolving taxonomic uncertainty are essential. The primary objective of this study was to assess the evolutionary distinctiveness of the federally endangered plant species (Orobanchaceae) to ensure it represents a distinct taxon warranting protection under the United States Endangered Species Act. : We describe and implement a sequential approach that begins with the most restrictive criteria of genealogical exclusivity within which we first conducted a phylogenetic analysis based on six chloroplast DNA loci assayed from multiple representatives of five putative species. Because of the possibility that incomplete lineage sorting is responsible for the lack of genealogical exclusivity among individuals, we then conducted intensive population level analyses based on 21 microsatellite loci and 61 morphological traits. : The distinctiveness of from and was not supported under the genealogical species concept. The results from the analyses of microsatellite loci and morphological characters evaluated under alternative species concepts also did not support the distinctiveness of from . : Through this successive approach, we found insufficient evidence to support the evolutionary distinctiveness of the listed taxon . We recommend that it be synonymized under and also conclude that the taxon that would now include is deserving of protection under the Endangered Species Act.

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