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51 results for “Bombus terrestris”
Fig. 3 in Ultrastructure and distribution of antennal sensilla of Bombus terrestris (Hymenoptera: Apidae)
Fig. 3. Antennal sensilla of Bombus terrestris: (panel A) Sch B on the scape of queens; (panel B) Sch B on the pedicel of workers; (panel C) Sba A on the flagellum of queens; (panel D) Sba A on the flagellum of workers; (panel E) Sba B on the flagellum of queens; and (panel F) Sba B on the flagellum of queens.
Fig. 2 in Ultrastructure and distribution of antennal sensilla of Bombus terrestris (Hymenoptera: Apidae)
Fig. 2. Antennal sensilla of Bombus terrestris: (panel A) abaxial surface of scape of males; (panel B) ventral surface of scape of males; (panel C) the end of flagellum of queens; (panel D) Str A on the flagellum of workers; (panel E) Str B on the flagellum of queens; and (panel F) Sch A on the pedicel of workers.
Fig. 1 in Ultrastructure and distribution of antennal sensilla of Bombus terrestris (Hymenoptera: Apidae)
Fig. 1. Scanning electron micrographs (SEM) of the antennae of a queen of Bombus terrestris. Scape (SC), pedicel (PE), flagellum (FG), ten flagellar segments (F1–F10).
Data from: Landscape and climate-associated selection in the native and widespread bumblebee, <em>Bombus terrestris</em>
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Data from: Sulfoxaflor exposure reduces egg laying in bumblebees (Bombus terrestris)
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Data from: Population genetic structure of Bombus terrestris in Europe: isolation and genetic differentiation of Irish and British populations
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A combined RAD-Seq and WGS approach reveals the genomic basis of yellow color variation in bumble bee Bombus terrestris
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Data from: Individual and combined impacts of sulfoxaflor and Nosema bombi on bumblebee (Bombus terrestris) larval growth
<p>Sulfoxaflor is a globally important novel insecticide that can have negative impacts on the reproductive output of bumblebee (<i>Bombus terrestris</i>) colonies. However, it remains unclear as to which life-history stage is critically affected by exposure. One hypothesis is that sulfoxaflor exposure early in the colony's life cycle can impair larval development, reducing the number of workers produced, and ultimately lowering colony reproductive output. Here we assess the influence of sulfoxaflor exposure on bumblebee larval mortality and growth both when tested in insolation and when in combination with the common fungal parasite <i>Nosema bombi, </i>following a pre-registered design. We found no impact of sulfoxaflor (5ppb) or <i>N. bombi</i> exposure (50,000 spores) on larval mortality when tested in isolation but found an additive, negative effect when larvae received both stressors in combination. Furthermore, we found that sulfoxaflor and <i>N. bombi </i>exposure individually impaired larval growth but also found possible antagonistic effects when used in combination. Ultimately, our results suggest that colony-level consequences of sulfoxaflor exposure for bumblebees may be mediated through direct effects on larvae. As sulfoxaflor is licenced for use globally, our findings highlight the need to understand how novel insecticides impact non-target insects at various stages of their development. </p>
Data from: Colour as a backup for scent in the presence of olfactory noise: testing the efficacy backup hypothesis using bumblebees (Bombus terrestris)
The majority of floral displays simultaneously broadcast signals from multiple sensory modalities, but these multimodal displays come at both a metabolic cost and an increased conspicuousness to floral antagonists. Why then do plants invest in these costly multimodal displays? The efficacy backup hypothesis suggests that individual signal components act as a backup for others in the presence of environmental variability. Here, we test the efficacy backup hypothesis by investigating the ability of bumblebees to differentiate between sets of artificial flowers in the presence of either chemical interference or high wind speeds, both of which have the potential to impede the transmission of olfactory signals. We found that both chemical interference and high wind speeds negatively affected forager learning times, but these effects were mitigated in the presence of a visual signal component. Our results suggest that visual signals can act as a backup for olfactory signals in the presence of chemical interference and high wind speeds, and support the efficacy backup hypothesis as an explanation for the evolution of multimodal floral displays.
SNP datasets from invasive Bombus terrestris on Tasmania, Australia
<p><span>Invasive species are predicted to adjust their morphological, physiological, and life-history traits to adapt to their non-native environments. Although a loss of genetic variation during invasion may restrict local adaptation, introduced species often thrive in novel environments. Despite being founded by just a few individuals, the bumblebee <em>Bombus</em> <em>terrestris</em> (Hymenoptera: Apidae) has successfully spread across the island of Tasmania (Australia) in less than 30 years, becoming abundant and competitive with native pollinators. We use RADseq to investigate what neutral and adaptive genetic processes associated with environmental and morphological variation allow <em>B. terrestris</em> to thrive as an invasive species in Tasmania. Across 15 sites, we found high gene flow with low genetic diversity, significant isolation-by-distance, and spatial variation in effective migration rates. A longitudinal band of restricted migration was evident across the mid-central region of Tasmania, corresponding to sites with high elevation, pastural land, low wind speeds and low precipitation seasonality. Tajima's D indicated a recent population expansion for central sites extending from the south to the north of the island. Significant selection signatures were found for loci in relation to precipitation, wind speed, and wing loading. Candidate loci were annotated to genes with functions related to </span><span>cuticle water retention and insect flight muscle stability. </span><span>Understanding how a genetically impoverished invasive bumblebee has rapidly adapted to a novel island environment provides further understanding about the evolutionary processes that determine successful insect invasions and the potential for invasive hymenopteran pollinators to spread globally.</span></p>
Figure 1 from: Guiraud M, Cariou B, Henrion M, Baird E, Gérard M (2021) Higher developmental temperature increases queen production and decreases worker body size in the bumblebee Bombus terrestris. Journal of Hymenoptera Research 88: 39-49. https://doi.org/10.3897/jhr.88.73532
Figure 1 The effect of temperature on the total number of individuals of each caste produced in each colony Colonies A1-A3 and B1-B4 were from session 1, colonies C1-C4 and D1-D4 were from session 2. No significant effect of the session for any caste (p > 0.05). No significant impact of the temperature on the total number of individuals (p = 0.96), neither on the number of males (p = 0.24) or workers (p = 0.34) The number of queens produced was significantly higher at 33°C (p = 0.001).
Figure 2 from: Guiraud M, Cariou B, Henrion M, Baird E, Gérard M (2021) Higher developmental temperature increases queen production and decreases worker body size in the bumblebee Bombus terrestris. Journal of Hymenoptera Research 88: 39-49. https://doi.org/10.3897/jhr.88.73532
Figure 2 The impact of developmental temperature on bumblebee body size. Letters at the top of the boxplots indicate significant differences when the letters are different.
Fig. 6 in Effect of Bombus terrestris L. (Hymenoptera, Apidae) pollinating on flowering and fruiting trends of greenhouse tomato (Lycopersicon esculentum)
Fig. 6: Compare external diameter in greenhouse tomato bushes with and without bumblebees pollination treatments.
Fig. 2 in Effect of Bombus terrestris L. (Hymenoptera, Apidae) pollinating on flowering and fruiting trends of greenhouse tomato (Lycopersicon esculentum)
Fig. 2: Establishment of colonies in the middle of net (A), a box of Bombus terrestris colony bought from Koppert Co., representing in Turkey (B).
Figure 2 from: Cameron SA, Corbet SA, Whitfield JB (2019) Bumble bees (Hymenoptera: Apidae: Bombus terrestris) collecting honeydew from the giant willow aphid (Hemiptera: Aphididae). Journal of Hymenoptera Research 68: 75-83. https://doi.org/10.3897/jhr.68.30495
Figure 2 - A Diurnal changes in total numbers of bees (blue dots) and wasps (red squares) B solute concentration in fresh honeydew (diamonds) and bumble bee crop contents (red dots). Arrows show times of sunrise and sunset.
Figure 1 from: Cameron SA, Corbet SA, Whitfield JB (2019) Bumble bees (Hymenoptera: Apidae: Bombus terrestris) collecting honeydew from the giant willow aphid (Hemiptera: Aphididae). Journal of Hymenoptera Research 68: 75-83. https://doi.org/10.3897/jhr.68.30495
Figure 1 - A Giant willow aphids ( Tuberolachnus salignus ) on a branch of Salix alba ; larger aphids range from 5.1–5.7 mm B Bombus terrestris collecting honeydew from leaf litter beneath several branches bearing the aphids C holding a plastic plate beneath the aphid colonies to collect honeydew droplets D collecting honeydew droplets from the plate using a 5 μl glass capillary tube E compressing a worker bumble bee to force regurgitation of crop contents onto the plate F using a refractometer to measure solute concentration of honeydew.
Figure 1 in First record of the invasive bumble bee Bombus terrestris (Hymenoptera: Apidae) on Navarino Island, southern Chile (55°S)
Figure 1. Map of Navarino Island (55°S) showing locations where Bombus (Bombus) terrestris (Linnaeus) has been captured (black circles) and sighted (yellow circles).
Dataset for paper "Effects of Heavy Metal Accumulation Mediated by Floral Rewards on Key Stages of Growth and Development of Bumblebees (Bombus terrestris L.)"
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Data from: Reproductive workers show queen-like gene expression in an intermediately eusocial insect, the buff-tailed bumble bee Bombus terrestris
Bumble bees represent a taxon with an intermediate level of eusociality within Hymenoptera. The clear division of reproduction between a single founding queen and the largely sterile workers is characteristic for highly eusocial species, whereas the morphological similarity between the bumble bee queen and the workers is typical for more primitively eusocial hymenopterans. Also, unlike other highly eusocial hymenopterans, division of labour among worker subcastes is plastic and not predetermined by morphology or age. We conducted a differential expression analysis based on RNA-seq data from 11 combinations of developmental stage and caste to investigate how a single genome can produce the distinct castes of queens, workers and males in the buff-tailed bumble bee Bombus terrestris. Based on expression patterns, we found males to be the most distinct of all adult castes (2411 transcripts differentially expressed compared to nonreproductive workers). However, only relatively few transcripts were differentially expressed between males and workers during development (larvae: 71 and pupae: 162). This indicates the need for more distinct expression patterns to control behaviour and physiology in adults compared to those required to create different morphologies. Among female castes, reproductive workers and their nonreproductive sisters displayed differential expression in over ten times more transcripts compared to the differential expression found between reproductive workers and their mother queen. This suggests a strong shift towards a more queenlike behaviour and physiology when a worker becomes fertile. This contrasts with eusocial species where reproductive workers are more similar to nonreproductive workers than the queen.
Data from: Colour as a backup for scent in the presence of olfactory noise: testing the efficacy backup hypothesis using bumblebees (Bombus terrestris)
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.