39 results match your criteria bumblebee communities

A keystone mutualism promotes resistance to invasion.

J Anim Ecol 2021 Sep 24. Epub 2021 Sep 24.

Grupo de Ecología de Invasiones & Laboratorio Ecotono, Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA), CONICET- Universidad Nacional del Comahue, Bariloche, Argentina.

1. It is not uncommon for one or a few species, and their interactions, to have disproportionate effects on other species in ecological communities. Such keystone interactions might affect how communities respond to the invasion of non-native species by preventing or inhibiting the establishment, spread or impact of non-native species. Read More

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September 2021

Invasion dynamics of the European bumblebee Bombus terrestris in the southern part of South America.

Sci Rep 2021 Jul 27;11(1):15306. Epub 2021 Jul 27.

Departamento de Ciencias Agronómicas y Recursos Naturales, Butamallin Research Center for Global Change, Universidad de La Frontera, Temuco, Chile.

Invasive species are one of the main biodiversity loss drivers. Some species can establish and thrive in novel habitats, impacting local communities, as is the case of managed pollinators. In this regard, an invasive species' expansion process over time is critical for its control and management. Read More

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Bumblebee (Hymenoptera: Apidae) Visitation Frequency Drives Seed Yields and Interacts with Site-Level Species Richness to Drive Pollination Services in Sunflower.

Environ Entomol 2021 Jul 6. Epub 2021 Jul 6.

Department of Forest and Rangeland Stewardship, Warner College of Natural Resources, Colorado State University, Fort Collins, CO 80523-1472, USA.

Understanding whether pollinator behaviors and species richness drive crop yields is a key area of investigation in pollination ecology. Using sunflower as a study species we describe variation in mean floral visitation times among bee taxa and test how interactions between bee richness and the proportion of bumblebees in localized communities impact seed yield. Seven bee genera commonly visited sunflower including Agapostemon, Bombus, Halictus, Lasioglossum, Megachile, Melissodes, and Svastra. Read More

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Decline of parasitic and habitat-specialist species drives taxonomic, phylogenetic and functional homogenization of sub-alpine bumblebee communities.

Oecologia 2021 Jul 15;196(3):905-917. Epub 2021 Jun 15.

Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, 75007, Uppsala, Sweden.

The ongoing biodiversity crisis is characterised not only by an elevated extinction rate but also can lead to an increasing similarity of species assemblages. This is an issue of major concern, as it can reduce ecosystem resilience and functionality. Changes in the composition of pollinator communities have mainly been described in intensive agricultural lowland areas. Read More

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Modeling scale up of anthropogenic impacts from individual pollinator behavior to pollination systems.

Conserv Biol 2021 May 16. Epub 2021 May 16.

Program in Bioinformatics and Computational Biology, Worcester Polytechnic Institute, Worcester, Massachusetts, USA.

Understanding how anthropogenic disturbances affect plant-pollinator systems has important implications for the conservation of biodiversity and ecosystem functioning. Previous laboratory studies show that pesticides and pathogens, which have been implicated in the rapid global decline of pollinators over recent years, can impair behavioral processes needed for pollinators to adaptively exploit floral resources and effectively transfer pollen among plants. However, the potential for these sublethal stressor effects on pollinator-plant interactions at the individual level to scale up into changes to the dynamics of wild plant and pollinator populations at the system level remains unclear. Read More

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Virus Prevalence and Genetic Diversity Across a Wild Bumblebee Community.

Front Microbiol 2021 22;12:650747. Epub 2021 Apr 22.

Centre for Ecology and Conservation, University of Exeter, Cornwall, United Kingdom.

Viruses are key population regulators, but we have limited knowledge of the diversity and ecology of viruses. This is even the case in wild host populations that provide ecosystem services, where small fitness effects may have major ecological impacts in aggregate. One such group of hosts are the bumblebees, which have a major role in the pollination of food crops and have suffered population declines and range contractions in recent decades. Read More

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Testing the multiple stressor hypothesis: chlorothalonil exposure alters transmission potential of a bumblebee pathogen but not individual host health.

Proc Biol Sci 2021 03 31;288(1947):20202922. Epub 2021 Mar 31.

School of Biological Sciences, Illinois State University, Normal, IL 61790, USA.

Numerous threats are putting pollinator health and essential ecosystem pollination services in jeopardy. Although individual threats are widely studied, their co-occurrence may exacerbate negative effects, as posited by the multiple stressor hypothesis. A prominent branch of this hypothesis concerns pesticide-pathogen co-exposure. Read More

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Linear infrastructure habitats increase landscape-scale diversity of plants but not of flower-visiting insects.

Sci Rep 2020 12 7;10(1):21374. Epub 2020 Dec 7.

Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, 75007, Uppsala, Sweden.

Habitats along linear infrastructure, such as roads and electrical transmission lines, can have high local biodiversity. To determine whether these habitats also contribute to landscape-scale biodiversity, we estimated species richness, evenness and phylogenetic diversity of plant, butterfly and bumblebee communities in 32 km landscapes with or without power line corridors, and with contrasting areas of road verges. Landscapes with power line corridors had on average six more plant species than landscapes without power lines, but there was no such effect for butterflies and bumblebees. Read More

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December 2020

Forest fragmentation modifies the composition of bumblebee communities and modulates their trophic and competitive interactions for pollination.

Sci Rep 2020 07 2;10(1):10872. Epub 2020 Jul 2.

Mediterranean Institute for Advanced Studies (UIB-CSIC), Global Change Research Group, C/Miquel Marquès 21, 07190, Esporles, Balearic Islands, Spain.

Understanding the effects of landscape fragmentation on global bumblebee declines requires going beyond estimates of abundance and richness and evaluating changes in community composition and trophic and competitive interactions. We studied the effects of forest fragmentation in a Scandinavian landscape that combines temperate forests and croplands. For that, we evaluated how forest fragmentation features (patch size, isolation and shape complexity, percentage of forest in the surroundings) as well as local flowering communities influenced bumblebee abundance, richness and community composition in 24 forest patches along a fragmentation gradient. Read More

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Diversity and functional analysis of Chinese bumblebee gut microbiota reveal the metabolic niche and antibiotic resistance variation of Gilliamella.

Insect Sci 2021 Apr 9;28(2):302-314. Epub 2020 Sep 9.

College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.

Bumblebees play an important role in maintaining the balance of natural and agricultural ecosystems, and the characteristic gut microbiota of bumblebees exhibit significant mutualistic functions. China has the highest diversity of bumblebees; however, gut microbiota of Chinese bumblebees have mostly been investigated through culture-independent studies. Here, we analyzed the gut communities of bumblebees from Sichuan, Yunnan, and Shaanxi provinces in China through 16S ribosomal RNA amplicon sequencing and bacterial isolation. Read More

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Designing online species identification tools for biological recording: the impact on data quality and citizen science learning.

PeerJ 2019 28;6:e5965. Epub 2019 Jan 28.

School of Biological Sciences, University of Aberdeen, Aberdeen, UK.

In recent years, the number and scale of environmental citizen science programmes that involve lay people in scientific research have increased rapidly. Many of these initiatives are concerned with the recording and identification of species, processes which are increasingly mediated through digital interfaces. Here, we address the growing need to understand the particular role of digital identification tools, both in generating scientific data and in supporting learning by lay people engaged in citizen science activities pertaining to biological recording communities. Read More

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January 2019

Hibernation Leads to Altered Gut Communities in Bumblebee Queens ().

Insects 2018 Dec 7;9(4). Epub 2018 Dec 7.

Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), Department of Microbial and Molecular Systems, KU Leuven, Campus De Nayer, B-2860 Sint-Katelijne-Waver, Belgium.

Many reptiles, amphibians, mammals, and insects practice some form of hibernation during which their metabolic rate is drastically reduced. This allows them to conserve energy and survive the harsh winter conditions with little or no food. While it can be expected that a reduction in host metabolism has a substantial influence on the gut microbial community, little is known about the effects of hibernation on the composition of the microbial gut community, especially for insects. Read More

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December 2018

-BEEHAVE: A systems model for exploring multifactorial causes of bumblebee decline at individual, colony, population and community level.

J Appl Ecol 2018 Nov 22;55(6):2790-2801. Epub 2018 May 22.

Environment and Sustainability Institute University of Exeter, Penryn Campus Cornwall UK.

World-wide declines in pollinators, including bumblebees, are attributed to a multitude of stressors such as habitat loss, resource availability, emerging viruses and parasites, exposure to pesticides, and climate change, operating at various spatial and temporal scales. Disentangling individual and interacting effects of these stressors, and understanding their impact at the individual, colony and population level are a challenge for systems ecology. Empirical testing of all combinations and contexts is not feasible. Read More

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November 2018

Habitat-specific variation in gut microbial communities and pathogen prevalence in bumblebee queens (Bombus terrestris).

PLoS One 2018 25;13(10):e0204612. Epub 2018 Oct 25.

Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), Department of Microbial and Molecular Systems, KU Leuven, Campus De Nayer, Sint-Katelijne-Waver, Belgium.

Gut microbial communities are critical for the health of many insect species. However, little is known about how gut microbial communities respond to anthropogenic changes and how such changes affect host-pathogen interactions. In this study, we used deep sequencing to investigate and compare the composition of gut microbial communities within the midgut and ileum (both bacteria and fungi) in Bombus terrestris queens collected from natural (forest) and urbanized habitats. Read More

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Experimental species removals impact the architecture of pollination networks.

Biol Lett 2017 Jun;13(6)

Rocky Mountain Biological Laboratory, Crested Butte, CO 81224, USA.

Mutualistic networks are key for the creation and maintenance of biodiversity, yet are threatened by global environmental change. Most simulation models assume that network structure remains static after species losses, despite theoretical and empirical reasons to expect dynamic responses. We assessed the effects of experimental single bumblebee species removals on the structure of entire flower visitation networks. Read More

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Real-time divergent evolution in plants driven by pollinators.

Nat Commun 2017 03 14;8:14691. Epub 2017 Mar 14.

Department of Systematic and Evolutionary Botany, University of Zürich, Zollikerstrasse 107, Zürich 8008, Switzerland.

Pollinator-driven diversification is thought to be a major source of floral variation in plants. Our knowledge of this process is, however, limited to indirect assessments of evolutionary changes. Here, we employ experimental evolution with fast cycling Brassica rapa plants to demonstrate adaptive evolution driven by different pollinators. Read More

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Interspecific Variation in Bumblebee Performance on Pollen Diet: New Insights for Mitigation Strategies.

PLoS One 2016 22;11(12):e0168462. Epub 2016 Dec 22.

Research Institute for Biosciences, Laboratory of Zoology, University of Mons, 20 Place du Parc, Mons, Belgium.

Bumblebees (i.e. Bombus genus) are major pollinators of flowering wild plants and crops. Read More

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A different gut microbial community between larvae and adults of a wild bumblebee nest (Bombus pascuorum).

Insect Sci 2018 Feb 7;25(1):66-74. Epub 2016 Nov 7.

Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.

Although the gut microbial communities in adult bumblebees and their associated functionalities are widely studied, descriptive data on the larval gut microbiota are still limited. The gut microbiota of a fully sampled wild Bombus pascuorum nest has been characterized, using the multiplexed Illumina MiSeq 16S ribosomal RNA amplicon sequencing technique. The nesters and foragers inhabiting the same nest showed the typical core bacterial sequences and only marginal differences in their characterized gut microbiota. Read More

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February 2018

Pollination services enhanced with urbanization despite increasing pollinator parasitism.

Proc Biol Sci 2016 06;283(1833)

General Zoology, Institute for Biology, Martin Luther University Halle-Wittenberg, Hoher Weg 8, 06120 Halle (Saale), Germany German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.

Animal-mediated pollination is required for the reproduction of the majority of angiosperms, and pollinators are therefore essential for ecosystem functioning and the economy. Two major threats to insect pollinators are anthropogenic land-use change and the spread of pathogens, whose effects may interact to impact pollination. Here, we investigated the relative effects on the ecosystem service of pollination of (i) land-use change brought on by agriculture and urbanization as well as (ii) the prevalence of pollinator parasites, using experimental insect pollinator-dependent plant species in natural pollinator communities. Read More

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Immune response and gut microbial community structure in bumblebees after microbiota transplants.

Proc Biol Sci 2016 05;283(1831)

ETH Zürich, Institute of Integrative Biology (IBZ), Universitätstrasse 16, 8092 Zürich, Switzerland.

Microbial communities are a key component of host health. As the microbiota is initially 'foreign' to a host, the host's immune system should respond to its acquisition. Such variation in the response should relate not only to host genetic background, but also to differences in the beneficial properties of the microbiota. Read More

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Pre- and post-pollination interaction between six co-flowering Pedicularis species via heterospecific pollen transfer.

New Phytol 2016 09 12;211(4):1452-61. Epub 2016 May 12.

Institute of Evolution and Ecology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China.

It remains unclear how related co-flowering species with shared pollinators minimize reproductive interference, given that the degree of interspecific pollen flow and its consequences are little known in natural communities. Differences in pollen size in six Pedicularis species with different style lengths permit us to measure heterospecific pollen transfer (HPT) between species pairs in sympatry. The role of pollen-pistil interactions in mitigating the effects of HPT was examined. Read More

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September 2016

Exploring the Links between Post-Industrial Landscape History and Ecology through Participatory Methods.

PLoS One 2015 26;10(8):e0136522. Epub 2015 Aug 26.

Stockholm Environment Institute, University of York, York, United Kingdom.

There is increasing recognition of the importance for local biodiversity of post-mining sites, many of which lie near communities that have suffered significant social and economic deprivation as the result of mine closures. However, no studies to date have actively used the knowledge of local communities to relate the history and treatment of post-mining sites to their current ecological status. We report a study of two post-mining sites in the Yorkshire coalfield of the UK in which the local community were involved in developing site histories and assessing plant and invertebrate species composition. Read More

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Rearing and foraging affects bumblebee (Bombus terrestris) gut microbiota.

Environ Microbiol Rep 2015 Aug 10;7(4):634-41. Epub 2015 Jun 10.

NERC Centre for Ecology & Hydrology, Wallingford, OX10 8BB, UK.

Bumblebees are ecologically and economically important as pollinators of crop and wild plants, especially in temperate systems. Species, such as the buff-tailed bumblebee (Bombus terrestris), are reared commercially to pollinate high-value crops. Their highly specific gut microbiota, characterized by low diversity, may affect nutrition and immunity and are likely to be important for fitness and colony health. Read More

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An ultraviolet floral polymorphism associated with life history drives pollinator discrimination in Mimulus guttatus.

Am J Bot 2015 Mar 11;102(3):396-406. Epub 2015 Mar 11.

Ecology and Evolutionary Biology, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064 USA.

Unlabelled: •

Premise Of The Study: Ultraviolet (UV) floral patterns are common in angiosperms and mediate pollinator attraction, efficiency, and constancy. UV patterns may vary within species, yet are cryptic to human observers. Thus, few studies have explicitly described the distribution or ecological significance of intraspecific variation in UV floral patterning. Read More

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Parasites and genetic diversity in an invasive bumblebee.

J Anim Ecol 2014 Nov 3;83(6):1428-40. Epub 2014 Jun 3.

School of Biological Sciences, Royal Holloway, University of London, Egham, TW20 0EX, UK.

Biological invasions are facilitated by the global transportation of species and climate change. Given that invasions may cause ecological and economic damage and pose a major threat to biodiversity, understanding the mechanisms behind invasion success is essential. Both the release of non-native populations from natural enemies, such as parasites, and the genetic diversity of these populations may play key roles in their invasion success. Read More

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November 2014

The identity of crop pollinators helps target conservation for improved ecosystem services.

Biol Conserv 2014 Jan;169(100):128-135

Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, University of Reading, UK.

Insect pollinated mass flowering crops are becoming more widespread and there is a need to understand which insects are primarily responsible for the pollination of these crops so conservation measures can be appropriately targeted in the face of pollinator declines. This study used field surveys in conjunction with cage manipulations to identify the relative contributions of different pollinator taxa to the pollination of two widespread flowering crops, field beans and oilseed rape. Flower visiting pollinator communities observed in the field were distinct for each crop; while field beans were visited primarily by a few bumblebee species, multiple pollinator taxa visited oilseed, and the composition of this pollinator community was highly variable spatially and temporally. Read More

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January 2014

Bumblebee community homogenization after uphill shifts in montane areas of northern Spain.

Oecologia 2013 Dec 14;173(4):1649-60. Epub 2013 Jul 14.

Ecology Unit, Department of Biology of Organisms and Systems, Universidad de Oviedo, 33071, Oviedo, Spain,

Widespread alterations in species distribution and abundance as a result of global environmental change include upwards and polewards shifts driven by local extinctions in the south or at lower elevations and colonizations of newly available habitat elements in the north or at higher elevations. Although cumulative changes on patterns of community composition are also expected, studies following a community-level approach are still scarce. Here, we estimate changes in abundance and distribution of bumblebee (Bombus spp. Read More

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December 2013

Diversity and evolutionary patterns of bacterial gut associates of corbiculate bees.

Mol Ecol 2013 Apr 24;22(7):2028-44. Epub 2013 Jan 24.

ETH Zürich, Institute of Integrative Biology (IBZ), Zürich, Switzerland.

The animal gut is a habitat for diverse communities of microorganisms (microbiota). Honeybees and bumblebees have recently been shown to harbour a distinct and species poor microbiota, which may confer protection against parasites. Here, we investigate diversity, host specificity and transmission mode of two of the most common, yet poorly known, gut bacteria of honeybees and bumblebees: Snodgrassella alvi (Betaproteobacteria) and Gilliamella apicola (Gammaproteobacteria). Read More

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Ecological effects on gut bacterial communities in wild bumblebee colonies.

J Anim Ecol 2012 Nov 18;81(6):1202-1210. Epub 2012 Jun 18.

ETH Zürich, Institute of Integrative Biology, Universitätstrasse 16, 8092 Zürich, Switzerland.

1. Animal hosts harbour diverse and often specific bacterial communities (microbiota) in their gut. These microbiota can provide crucial services to the host such as aiding in digestion of food and immune defence. Read More

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November 2012

Pervasiveness of parasites in pollinators.

PLoS One 2012 26;7(1):e30641. Epub 2012 Jan 26.

Institute of Integrative and Comparative Biology, University of Leeds, Leeds, UK.

Many pollinator populations are declining, with large economic and ecological implications. Parasites are known to be an important factor in the some of the population declines of honey bees and bumblebees, but little is known about the parasites afflicting most other pollinators, or the extent of interspecific transmission or vectoring of parasites. Here we carry out a preliminary screening of pollinators (honey bees, five species of bumblebee, three species of wasp, four species of hoverfly and three genera of other bees) in the UK for parasites. Read More

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