Assessing the impact of the invasive buff-tailed bumblebee (Bombus terrestris) on the pollination of the native Chilean herb Mimulus luteus

Esterio, Gabriel; Cares-Suárez, Roxana; González-Browne, Catalina; Salinas, Patricia; Carvallo, Gastón O.; Medel, Rodrigo

doi:10.1007/s11829-013-9264-1

Cited by 13 publications

(9 citation statements)

References 39 publications

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“…First, despite native plants and E. vulgare sharing the more abundant pollinators, which could contribute to HP transfer among individuals , these pollinators may act as ineffective pollen carriers. This could be the case for Bombus terrestris (exotic in Chile), which visits both native and exotic flowers in invaded patches and has been determined to be an ineffective pollinator for other plant species in Mediterranean-type ecosystems of central Chile (Esterio et al 2013) and several other geographic regions around world (Goulson 2003).…”

Section: Discussionmentioning

confidence: 99%

Heterospecific pollen transfer from an exotic plant to native plants: assessing reproductive consequences in an Andean grassland

Carvallo

Medel

2016

Plant Ecology & Diversity

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Background: The presence of exotic plants increases the heterospecific pollen (HP hereafter) received by native plants and reduces their reproductive output. Aims: We assessed whether the exotic herb Echium vulgare (Boraginaceae) increased HP and reduced seed output of the native plants Phacelia secunda (Boraginaceae) and Stachys albicaulis (Lamiaceae) in an Andean locality, central Chile. Methods: The presence of HP was studied in native plants growing with and without co-existence with the exotic E. vulgare. A complementary hand pollination experiment was carried out to assess whether E. vulgare pollen reduced the reproductive success of native plants.Results: In the presence of E. vulgare, 17.3% and 3.7% of P. secunda and S. albicaulis individuals that coexisted with the exotic species received HP. For P. secunda, the number of conspecific pollen grains decreased in invaded patches compared with non-invaded patches; no differences were observed for S. albicaulis. The pollen of E. vulgare negatively affected the reproductive success of S. albicaulis but not that of P. secunda. Conclusions: The presence of HP cannot be predicted from the presence of exotic plants alone, and other factors, such as flower morphology, could explain the greater HP transfer in P. secunda (actinomorphic flowers) than in S. albicaulis (zygomorphic flowers). A higher negative effect of E. vulgare pollen on P. secunda versus S. albicaulis could be related to the phylogenetic resemblance between the exotic donor and native recipient plant because pollen-stigma compatibility may be evolutionary conserved through common lineages.

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Section: Discussionmentioning

confidence: 99%

Heterospecific pollen transfer from an exotic plant to native plants: assessing reproductive consequences in an Andean grassland

Carvallo

Medel

2016

Plant Ecology & Diversity

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“…Esterio et al . () recorded the visitation rate and pollen transfer effectiveness of bees and bumblebees in a population of M. luteus during 2010, 2011 and 2012. González et al .…”

Section: A Review Of the Evidencementioning

confidence: 99%

“…Esterio et al . () examined the potential impact of the exotic bumblebee B. terrestris on the pollination service provided by the native pollinator assemblage on the herb M. luteus during three consecutive years. Results revealed that B. terrestris was an inefficient pollinator in comparison to native bees due to the small amount of pollen delivered to stigmas and the low and intermittent visitation rate over the years studied.…”

Section: A Review Of the Evidencementioning

confidence: 99%

Pollination in the Chilean Mediterranean‐type ecosystem: a review of current advances and pending tasks

2017

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We conducted a systematic review of the scientific literature published on plant-pollinator interactions, from both the plant and pollinator perspective, in the Chilean Mediterranean-type ecosystem (MTE hereafter). Our search identified 69 published papers on 235 native plant species from 62 families. Less than 7.9% of the flowering species inhabiting the Chilean Mediterranean have been studied, and most studies were restricted to only one locality and one reproductive season. The geographic location of the studies differed from a random pattern, showing two well-defined areas where most studies were conducted. Likewise, most studies in the Andes Range were performed above 2000 m a.s.l. The number of species of flower visitor per plant species was low (4.25 ± 0.22), which probably results from the historical and biogeographic isolation of Chile. This literature survey shows that studies relating floral traits with pollinator attraction and plant reproduction are the most frequent topics of research, reaching 37.6% of studies, followed by studies that examine pollination in relation to human impact (16.1%), micro- and macroevolution (14.0%), relationships between pollination and other ecological interactions (10.8%), community and network assessments (11.8%), and effects of abiotic variables on pollination interactions (9.7%). Our review highlights a lack of research on the effects of pollination for anthropogenic land use especially as agricultural practice is one of the most salient features of the Chilean MTE. Future directions to increase our understanding of the role of plant-pollinator relationships for biodiversity maintenance should include: to extend the taxonomic and geographic scope of research, to increase the number of spatial and temporal replicates, to increase the number of studies on pollination networks as they provide estimates of community complexity and putative stability, to develop studies that estimate the importance of pollination for plant demographic parameters and conservation, and to conduct studies that estimate the ecological service provided by Chilean native pollinators for crop yield and sustainable agriculture.

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“…Conversely, the pollinators with low visit densities likely perform a high level of pollination services if they have a high pollen transfer efficacy (Esterio et al. ). Therefore, when exploring pollinator contributions to plants, visit density and pollen transfer efficacy must to be considered collectively (Freitas ; Woodcock et al.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a high visit density does not result in a high level of pollination services if the pollinators carry a low number of pollen grains on their body surfaces and thus deposit a low amount of pollen grains on stigmas (Bischoff et al 2012;King et al 2013). Conversely, the pollinators with low visit densities likely perform a high level of pollination services if they have a high pollen transfer efficacy (Esterio et al 2013). Therefore, when exploring pollinator contributions to plants, visit density and pollen transfer efficacy must to be considered collectively (Freitas 2013;Woodcock et al 2013).…”

Section: Introductionmentioning

confidence: 99%

The effects of landscape on bumblebees to ensure crop pollination in the highland agricultural ecosystems in China

Xie

2014

J Applied Entomology

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Honey bees and wild bees provide critical pollination services to agricultural ecosystems; however, the relative contributions of different bee taxa are not well understood. The natural habitats surrounding farmland support food and nesting resources for wild bees and therefore play an important role in the maintenance of crop pollination. In this study, we selected Cucurbita pepo L. (squash) as a model crop to investigate the relative importance of honey bees and bumblebees in pollinating the crop. Thirteen fields, which were surrounded by a gradient of natural habitat, were investigated on the Yunnan‐Guizhou Plateau in China. We measured the visit densities of honey bees and bumblebees, the number of pollen grains deposited in a single visit by the two bee taxa, as well as the overall pollen grains deposited on stigmas during a flowering day, and then used Bayesian inference to decouple the pollen grains deposited by either the honey bees or the bumblebees. Compared with honey bees, bumblebees deposited a higher number of pollen grains on stigmas in a single visit, but had a lower visit density than honey bees. Meanwhile, the bumblebee visit density increased along the proportion of natural habitat, while the honey bee visit density was not affected by the surrounding natural habitat. Data simulations using Bayesian inference showed that on a flowering day, the number of pollen grains deposited by bumblebees increased with the proportion of natural habitat in the surrounding landscape, but the number of pollen grains deposited by honey bees did not. Moreover, the total numbers of pollen grains deposited by honey bees or bumblebees alone were all below 2000 (the critical level to satisfy the pollination requirement of this crop). Pollen calculations demonstrated that the number of pollen grains deposited by the two bee taxa was greater than 2000 in fields surrounded by more than 13% natural habitat (grasslands and forests). The results revealed that bumblebees ensured C. pepo pollination in combination with honey bees in the highland agricultural ecosystems.

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Assessing the impact of the invasive buff-tailed bumblebee (Bombus terrestris) on the pollination of the native Chilean herb Mimulus luteus

Cited by 13 publications

References 39 publications

Heterospecific pollen transfer from an exotic plant to native plants: assessing reproductive consequences in an Andean grassland

Heterospecific pollen transfer from an exotic plant to native plants: assessing reproductive consequences in an Andean grassland

Pollination in the Chilean Mediterranean‐type ecosystem: a review of current advances and pending tasks

The effects of landscape on bumblebees to ensure crop pollination in the highland agricultural ecosystems in China

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