Pinange et al. 2020 (Article) Dyckia

Population genetics shed light on species delimitation and life history of the Dyckia pernambucana complex (Bromeliaceae)

Author(s):—D.S. Pinangé, R.B. Louzada, T. Wöhrmann, F. Krapp, K. Weising, G. Zizka, É.M. Polo, M.G. Wanderley & A.M. Benko I.

Publication:—Botanical Journal of the Linnean Society 192(4): 706-725. (2020)

Abstract:—In the Atlantic Rainforest located north of the São Francisco River (northeast Brazil), the humid enclaves called brejos de altitude play a significant role in the diversity dynamics of local flora and fauna. The related species Dyckia pernambucana and D. limae (Bromeliaceae) are characterized by their narrow endemic occurrence in such brejos, and their species status remains unclear. In order to understand the species delimitation in those assigned taxonomic entities, patterns of gene flow and genetic variability were calculated using nuclear and plastid microsatellites and AFLP markers. In this regard, we collected populations of the Pernambuco complex (D. limae and D. pernambucana, from the Borborema Plateau) and the closest relative D. dissitiflora (from the northern Espinhaço Range). Genetic diversity was moderate, despite the possible influence of genetic drift and selfing rates. Dyckia limae could not …