Pollination and Reproductive Biology of Twelve Species of Neotropical Malpighiaceae: Stigma Morphology and its Implications for the Breeding System

Sigrist, Maria Rosângela; Sazima, Marlies

doi:10.1093/aob/mch108

Cited by 110 publications

(105 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(a) Study site and dataset We used data from literature to identify the types of interaction between flower visitors and (i) Malpighiaceae (Sigrist 2001;Sigrist & Sazima 2004) and (ii) Bignoniaceae (Amaral 1992) in a 250 ha fragment of semi-deciduous, seasonal forest (Santa Genebra Municipal Reserve, SGR), Campinas, SE Brazil (22849 0 S, 4787 0 W). The networks are presented as adjacency matrices depicting plant-animal interactions, in which matrix element r ij ¼1, if plant species i interacts with animal species j and zero otherwise (e.g.…”

Section: Methodsmentioning

confidence: 99%

Cheaters in mutualism networks

et al. 2010

View full text Add to dashboard Cite

Mutualism-network studies assume that all interacting species are mutualistic partners and consider that all links are of one kind. However, the influence of different types of links, such as cheating links, on network organization remains unexplored. We studied two flower-visitation networks (Malpighiaceae and Bignoniaceae and their flower visitors), and divide the types of link into cheaters (i.e. robbers and thieves of flower rewards) and effective pollinators. We investigated if there were topological differences among networks with and without cheaters, especially with respect to nestedness and modularity. The Malpighiaceae network was nested, but not modular, and it was dominated by pollinators and had much fewer cheater species than Bignoniaceae network (28% versus 75%). The Bignoniaceae network was mainly a plantcheater network, being modular because of the presence of pollen robbers and showing no nestedness. In the Malpighiaceae network, removal of cheaters had no major consequences for topology. In contrast, removal of cheaters broke down the modularity of the Bignoniaceae network. As cheaters are ubiquitous in all mutualisms, the results presented here show that they have a strong impact upon network topology.

show abstract

Section: Methodsmentioning

confidence: 99%

Cheaters in mutualism networks

et al. 2010

View full text Add to dashboard Cite

show abstract

“…2). Those species that were coded as lacking the oil-bee pollination syndrome included the seven Old World clades that occur where the oil bees are not present and the two New World clades that have lost the oil glands and floral orientation crucial to oil-bee pollination (13)(14)(15)25). We tested for elevated rates of morphological evolution in these non-oil-bee-associated clades compared with the rest of the phylogeny.…”

Section: Phylogenetic and Divergence Time Estimation For Malpighiaceamentioning

confidence: 99%

Long-term morphological stasis maintained by a plant–pollinator mutualism

Davis

Schaefer

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Many major branches in the Tree of Life are marked by stereotyped body plans that have been maintained over long periods of time. One possible explanation for this stasis is that there are genetic or developmental constraints that restrict the origin of novel body plans. An alternative is that basic body plans are potentially quite labile, but are actively maintained by natural selection. We present evidence that the conserved floral morphology of a species-rich flowering plant clade, Malpighiaceae, has been actively maintained for tens of millions of years via stabilizing selection imposed by their specialist New World oil-bee pollinators. Nine clades that have lost their primary oil-bee pollinators show major evolutionary shifts in specific floral traits associated with oil-bee pollination, demonstrating that developmental constraint is not the primary cause of morphological stasis in Malpighiaceae. Interestingly, Malpighiaceae show a burst in species diversification coinciding with the origin of this plant-pollinator mutualism. One hypothesis to account for radiation despite morphological stasis is that although selection on pollinator efficiency explains the origin of this unique and conserved floral morphology, tight pollinator specificity subsequently permitted greatly enhanced diversification in this system. phylogeny | flower morphology | comparative methods | Centridini | diversification rate

show abstract

“…All species in the tribe are obligatory cleptoparasites and only bees in the genus Epicharis Klug, 1807 (Apidae, Centridini) have been recorded as their hosts (Vesey-FitzGerald 1939;Rozen 1969Rozen , 1991Camargo et al 1975;Raw 1991Raw , 1992Hiller & Wittmann 1994;Gaglianone 2005;Michener 2007;RochaFilho et al 2008). The species of Epicharis are soil-nesting solitary bees, which use floral oils and exhibit a close association with the plant family Malpighiaceae (Gaglianone 2003(Gaglianone , 2005Rocha-Filho et al 2008;Sigrist & Sazima 2004;Alves-dos-Santos et al 2007).…”

mentioning

confidence: 99%