Interspecific Pollen Transfer: Magnitude, Prevalence and Consequences for Plant Fitness

Morales, Carolina; Traveset, Anna

doi:10.1080/07352680802205631

Cited by 433 publications

(542 citation statements)

References 74 publications

Supporting

Mentioning

520

Contrasting

Unclassified

Order By: Relevance

“…We therefore did not find a strategy of different pollen placement on hummingbird bodies as, previously reported on a Cerrado community (Araújo 2010). Therefore, it indicates that in this community the facilitation benefit of flowering together seems to compensate the cost of HPD (Morales & Traveset 2008). Moreover, the generalism of this pattern in hummingbird-pollinated communities from the Atlantic rainforest still needs to be tested.…”

Section: Transported Pollen Grainsmentioning

confidence: 90%

“…The trend of smaller seed set under mixed pollen deposition was also reported in herb species pollinated by bees, flies and beetles (Galen & Gregory 1989;Brown & Mitchell 2001;Moragues & Traveset 2005;Ashman & ArceoGómez 2013). Meanwhile, it is worth to mention that HPD is not always a problem for plant reproduction, depending on its magnitude and the plant species attributes (Morales & Traveset 2008).…”

Section: Pollen Mixture Experiments In Nidularium Innocentiimentioning

confidence: 99%

“…When they co-occur, plant species sharing pollinators may compete via heterospecific pollen deposition (HPD) (Morales & Traveset 2008;Mitchell et al 2009;Ashman & Arceo-Gómez 2013). At the community level, HPD magnitude depends on the number of interspecific switches by a given pollinator (Jakobsson et al 2008).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Heterospecific pollen deposition among plants sharing hummingbird pollinators in the Brazilian Atlantic Forest

et al. 2016

View full text Add to dashboard Cite

Hummingbirds are the most important group of pollinating birds in the Neotropics and tend to use, concomitantly, more than one plant species as food source. Pollen may be mixed on hummingbirds' body due to the visits to different plant species; therefore, these birds may promote heterospecific pollen deposition (HPD). The hummingbirds potential to promote HPD, the occurrence of HPD and its implications in plant reproduction are scarcely known in the Atlantic Forest. We have studied the transport of pollen by three hummingbird species from the Brazilian Atlantic Forest. We have also checked the actual HPD occurrence under natural conditions in two plant species, namely Canistropsis seidelii and Psychotria nuda. Moreover, we investigated Nidularium innocentii reproductive system evaluating the effect of HPD on its reproduction by simulating a pollen mixture pollination. We found hummingbirds transporting heterospecific pollen mixtures on their bodies, which in turn were deposited onto stigmas of different species. We have also found that mixed pollen deposition had negative effect on the fitness of N. innocentii. We conclude that hummingbirds carry pollen mixtures at the same body parts, leading to potential HPD at the community level. Moreover, hummingbird-plant communities in the Atlantic Rainforest show remarkable similarities in temporal organization and interaction pattern. This suggests that HPD may be a widespread phenomena in these communities. Key words: competition for pollination, fruit/seed set, pollen placement, pollen load, pollinator sharing, reproductive success. ResumoBeija-flores são o grupo de aves polinizadoras mais importantes nos Neotrópicos e tendem a utilizar, concomitantemente, mais de uma espécie de planta como fonte de alimento. O pólen pode estar misturado no corpo dos beija-flores devido às visitas em diferentes espécies de plantas, portanto, essas aves podem promover deposição de pólen heterospecífico (DPH). O potencial dos beija-flores em promover DPH, a ocorrência de DPH e suas consequências na reprodução das plantas são pouco conhecidas na Mata Atlântica. Nós estudamos o transporte de pólen por três espécies de beija--flores da Mata Atlântica brasileira. Nós também verificamos a ocorrência de DPH em condições naturais em duas espécies de planta, Canistropsis seidelii e Psychotria nuda. Além disso, nós investigamos o sistema reprodutivo de Nidularium innocentii, avaliando o efeito de DPH em sua reprodução ao simular uma polinização com mistura de pólen. Nós encontramos beija-flores transportando misturas de pólen heterospecífico em seus corpos, que por sua vez foram depositados nos estigmas de diferentes espécies. Nós também encontramos que a deposição de mistura de pólen tem um efeito negativo na aptidão de N. innocentii. Nós concluimos que beija-flores carregam misturas de pólen na mesma região do corpo, levando a um potencial DPH ao nível da comunidade. Além disso, comunidades de plantas e beija-flores na Floresta Atlântica exibem diversas similaridades em sua organização...

show abstract

Section: Transported Pollen Grainsmentioning

confidence: 90%

Section: Pollen Mixture Experiments In Nidularium Innocentiimentioning

confidence: 99%

See 1 more Smart Citation

Heterospecific pollen deposition among plants sharing hummingbird pollinators in the Brazilian Atlantic Forest

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Montgomery and Rathcke 2012). Effects of HP deposition on stigma interactions and the resultant success rates of conspecific pollen germination are highly varied between plants with obvious potential fitness costs for the plant (see Morales and Traveset 2008), and there may be particularly detrimental donors and particularly vulnerable recipients (Ashman and Arceo-Gomez 2013). However, there is also evidence that plants may develop tolerance to HP when they are more exposed to it (ArceoGomez et al Arceo-Gomez et al 2016b), which may be particularly likely in garden sites over time (though perhaps not important as many garden plants will never be allowed to breed on site anyway).…”

Section: Discussionmentioning

confidence: 99%

Insights from measuring pollen deposition: quantifying the pre-eminence of bees as flower visitors and effective pollinators

Willmer

Cunnold

Ballantyne

2017

Arthropod-Plant Interactions

View full text Add to dashboard Cite

Using our accumulated datasets from Kenyan savanna, Mediterranean garigue, UK gardens and heathland, involving 76 plants from 30 families, we present detailed data to quantify the superiority of bees as pollinators of most flowering plants when compared with other flower visitors. Bees provided the majority of visits to study species at all sites, and 33 of the 76 plants received more than 90% of their visits from bees. Furthermore, pollen deposition onto stigmas from single-visit events (SVD, a measure of pollination effectiveness) was significantly higher for bees than non-bees at all the four sites where a major proportion of the flora was sampled. Solitary bees, and also bumblebees in temperate habitats, were the best potential pollinators for most plants in this respect, and significantly out-performed honeybees. Only a few plants were well served by bombyliid flies, and fewer again by larger hoverflies, butterflies, or solitary wasps. Bees also achieved better matches of their visit timing to peak pollen availability (measured indirectly as peak SVD), and made much shorter visits to flowers than did non-bees, permitting a substantially greater visit frequency. Additionally, they deposited significantly lower levels of potentially deleterious heterospecific pollen on stigmas in heathland and Mediterranean garigue, though not in the UK garden with densely clustered high-diversity flowering, or in the Kenyan savanna site with particularly dispersed flowering patches and some specialist non-bee flowers. Our data provide a novel and quantified characterisation of the specific advantages of bees as flower visitors, and underline the need to conserve diverse bee communities.

show abstract

“…If increasing the visitation rate outweighs the costs of any interference from interspecific pollen transfer (Morales & Traveset 2008), then floral traits within communities should be, on average, more similar than chance would predict. Furthermore, whether floral characters are important determinants of competition or facilitation of pollination may be affected by the local abundance of a population (Spigler & Chang 2008).…”

Section: Introductionmentioning

confidence: 99%

Floral colour versus phylogeny in structuring subalpine flowering communities

2010

View full text Add to dashboard Cite

The relative number of seeds produced by competing species can influence the community structure; yet, traits that influence seed production, such as pollinator attraction and floral colour, have received little attention in community ecology. Here, we analyse floral colour using reflectance spectra that include near-UV and examined the phylogenetic signal of floral colour. We found that coflowering species within communities tended to be more divergent in floral colour than expected by chance. However, coflowering species were not phylogenetically dispersed, in part due to our finding that floral colour is a labile trait with a weak phylogenetic signal. Furthermore, while we found that locally rare and common species exhibited equivalent floral colour distances from their coflowering neighbours, frequent species (those found in more communities) exhibited higher colour distances from their coflowering neighbours. Our findings support recent studies, which have found that (i) plant lineages exhibit frequent floral colour transitions; and (ii) traits that influence local population dynamics contribute to community structure.

show abstract

Interspecific Pollen Transfer: Magnitude, Prevalence and Consequences for Plant Fitness

Cited by 433 publications

References 74 publications

Heterospecific pollen deposition among plants sharing hummingbird pollinators in the Brazilian Atlantic Forest

Heterospecific pollen deposition among plants sharing hummingbird pollinators in the Brazilian Atlantic Forest

Insights from measuring pollen deposition: quantifying the pre-eminence of bees as flower visitors and effective pollinators

Floral colour versus phylogeny in structuring subalpine flowering communities

Contact Info

Product

Resources

About