Open AccessGenetic and morphological variation in the Bulbophyllum exaltatum (Orchidaceae) complex occurring in the Brazilian “Campos Rupestres”: implications for taxonomy and biogeography
Author(s) -
Patrícia Luz Ribeiro,
Eduardo Leite Borba,
Eric C. Smidt,
Sabrina Mota Lambert,
Alessandra Selbach Schnadelbach,
Cassio van der Berg
Publication year - 2015
Publication title -
lankesteriana
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.398
H-Index - 13
eISSN - 2215-2067
pISSN - 1409-3871
DOI - 10.15517/lank.v7i1-2.18446
Subject(s) - orchidaceae , biology , pantropical , pollination , biogeography , gene flow , taxonomy (biology) , genus , botany , zoology , ecology , genetic variation , gene , pollen , biochemistry
Bulbophyllum Thouars is a pantropical genus. It is one of the most species-rich genera of the Orchidaceae, with ca. 1.200 species (Dressler 1993). The genus pre- sents myophily (pollination by Diptera) as pollination syndrome. Because orchid species are mainly self- compatible, we expect that fly-pollinated orchids pre- sent low variability within the populations and high genetic differentiation among conspecific populations, due to the reduction of the gene flow (Borba & Semir 1998, Borba et al. 2001). This could help to explain the high number of species in genera of fly-pollinated orchids, most of them with restricted distribution.