Reproductive ecology of Ameroglossum pernambucense (Scrophulariaceae): is this ornithophilous and threatened shrub highly adapted to a naturally fragmented habitat?

  title={Reproductive ecology of Ameroglossum pernambucense (Scrophulariaceae): is this ornithophilous and threatened shrub highly adapted to a naturally fragmented habitat?},
  author={Artur M. Wanderley and Ariadna Valentina Lopes and Isabel Cristina Machado},
  journal={Plant Systematics and Evolution},
Many rare plants exist in a naturally fragmented distribution and are expected to exhibit reproductive adaptations to isolation. Thus, understanding the reproduction of these plants might be important in predicting the future of artificially fragmented species. Ameroglossum pernambucense is a threatened ornithophilous shrub with naturally fragmented populations on granite outcrops in north-eastern Brazil. The current research studied two populations of A. pernambucense and determined if three… 
Population genetics shed light on species delimitation and life history of the Dyckia pernambucana complex (Bromeliaceae)
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
Pollen flow within and among isolated populations of two rare, self-compatible plant species from inselbergs of Northeast Brazil
The predominant role of cross-pollination among small, isolated populations as the main force against genetic erosion is suggested, suggesting natural genetic recovery (NGR) in more remote populations.
An overview of the Brazilian inselberg genus Ameroglossum (Linderniaceae, Lamiales), with the description of seven new species
It is hypothesized that the evolution of this genus Ameroglossum is driven by the diversity of their hummingbird pollinators, and seven new species are proposed.
Development of 15 SSR polymorphic markers for the endangered Ameroglossum pernambucense Eb. Fischer, S. Vogel & A. V. Lopes (Scrophulariaceae), and cross-transferability in congeneric taxa
The use of 15 polymorphic nuclear microsatellite markers for A. pernambucense in conservation and microevolutionary studies in Ameroglossum are discussed, as well as in the investigation of the importance of pollen-mediated gene flow in keeping genetic diversity in rare species with patchily distributed populations using progeny arrays.
Functional decoupling between flowers and leaves in the Ameroglossum pernambucense complex can facilitate local adaptation across a pollinator and climatic heterogeneous landscape
It is suggested that TL and AN are functionally linked to fit pollinators and sufficiently decoupled from developmentally related floral traits (SL) and vegetative traits (LL).
Can short-billed nectar thieving sunbirds replace long-billed sunbird pollinators in transformed landscapes?
  • S. Geerts
  • Environmental Science
    Plant biology
  • 2016
Chasmanthe floribunda a long-tubed plant species in the Cape Floristic Region, which is reliant on one species of pollinator, the long-billed Malachite Sunbird, is addressed, finding short billed sunbirds are unable to act as substitute pollinators, and seed set is significantly lower in the flowers that they visited, compared to flowers visited by long- billed sunbirds.
A New Species of Ameroglossum (Scrophulariaceae) Growing on Inselbergs in Northeastern Brazil
Ameroglossum manoel-felixii, a new species of AmeroglossUM, is described and illustrated here, and morphologically compared with A. pernambucense.
The roles of geography and environment in divergence within and between two closely related plant species inhabiting an island‐like habitat
This work tested the relative contribution of geographic and environmental isolation in genetic and phenotypic divergence within and between two species of the figwort Ameroglossum inhabiting spatially isolated habitats, known as inselbergs.


Pollen limitation and inbreeding depression in an 'old rare' bumblebee-pollinated grassland herb.
The results suggest that, similar to 'new rare' plant species, also 'old rare' species may be at risk of inbreeding depression and pollen limitation.
Effects of population size and isolation on reproductive output in Aquilegia canadensis (Ranunculaceae)
The proposed mechanisms underlying the association between population size and fitness are impossible to identify with correlations alone, and results are consistent with the hypothesis that inbreeding can significantly reduce the fitness of natural populations.
Flowering phenology influences seed production and outcrossing rate in populations of an alpine snowbed shrub, Phyllodoce aleutica: effects of pollinators and self-incompatibility.
Large variations in seed-set and outcrossing rates among populations were caused by the timing of pollinator availability during the season and the cryptic self-incompatibility of this species.
  • R. Wyatt
  • Environmental Science
    Evolution; international journal of organic evolution
  • 1984
The state of the art with respect to the evolution of autogamy was succinctly summarized by Jain (1976), who stated that "the authors have more speculation than rigorous thought, and more theory than real data" regarding the questions of when, how, and why it evolved.
Organization of a Tropical Guild of Nectarivorous Birds
Fourteen months' observations on hummingbird foraging patterns in successional habitats at Monteverde, Costa Rica, showed that one territorial species (Amazilia saucerottei) dominated rich resource
Pollen and seed dispersal among dispersed plants
  • J. Ghazoul
  • Environmental Science
    Biological reviews of the Cambridge Philosophical Society
  • 2005
Understanding how pollination processes are affected in such degraded landscapes can inform effective conservation and management of remaining natural areas.
Predominance of self-compatibility in hummingbird-pollinated plants in the Neotropics
Phylogenetic relatedness seems to be the strongest determinant of mating system in Neotropical hummingbird-pollinated plants.
Floral resource availability and hummingbird territorial behaviour on a Neotropical savanna shrub
It is indicated that territorial intruder use visual cues (floral abundance) as indicators of resource availability in order to estimate cost–benefit of territory invasion and although territorial behaviour could limit pollen flow in patches with larger floral displays, this may be compensated by the territory invaders, which bring pollen from other patches.
Plant reproductive susceptibility to habitat fragmentation: review and synthesis through a meta-analysis.
A highly significant correlation between the effect sizes of fragmentation on pollination and reproductive success suggests that the most proximate cause of reproductive impairment in fragmented habitats may be pollination limitation.