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562 results for “Bumblebees”
Data from: Climate change impacts on bumblebees converge across continents
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Data from: Reproductive conflict in bumblebees and the evolution of worker policing
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Data from: Sulfoxaflor exposure reduces egg laying in bumblebees (Bombus terrestris)
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Data from: Coordinated species importation policies are needed to reduce serious invasions globally: the case of alien bumblebees in South America
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Data from: Pattern of population structuring between Belgian and Estonian bumblebees
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Data from: Field-realistic exposure to the novel insecticide flupyradifurone reduces reproductive output in a bumblebee (Bombus impatiens)
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Data from: Reconstructing demographic events from population genetic data: the introduction of bumblebees to New Zealand
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Impact of landscape fragmentation and climate change on body size variation of bumblebees during the last century
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Data from: The potential of electricity transmission corridors in forested areas as bumblebee habitat
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Data from: Policing is more effective against eggs of non-natal versus natal workers at early colony stages in a bumblebee
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Testing the multiple stressor hypothesis: chlorothalonil exposure alters transmission potential of a bumblebee pathogen but not individual host health
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Short-term exposure to heatwave-like temperatures affects learning and memory in bumblebees
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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>
Fig. 21. A in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)
Fig. 21. A sample of 10 000 species trees from among 100 million trees for species of the subgenus Melanobombus von Dalla Torre, 1880 reconstructed with *BEAST from gene trees for the COI, 16S, opsin and PEPCK genes, displayed in green using Densitree, with the summary 'root canal' superimposed as a thick blue line. The outgroup B. nobilis Friese, 1905 is shown.
Fig. 11 in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)
Fig. 11. Numbers of unique COI haplotypes represented per species (y-axis, log scale) plotted against range size per species (x-axis, log scale). Unique COI haplotypes are listed in Fig. 10 and range size is measured as the number of large equal-area grid cells (611 000 km²) with records (Williams 1998).
Figs 139–180 in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)
Figs 139–180. Simplified diagrams for the colour patterns of the hair on the dorsum for the species from the integrative analysis. The dorsum is divided into regions, each of which shows only the predominant or most apparent colour for that region using a simplified colour palette, with olive indicating a mixture of black and yellow hair, and grey indicating a mixture of black and white hair. The keriensis-group. 139. Queen, China-Sichuan. 140. Worker, China-Sichuan. 141. Queen, China-Sichuan. 142. Queen, China-Sichuan. 143. Worker, China-Xizang. 144. Queen, India-Kashmir. 145. Male, China-Qinghai. 146. Male, India-Kashmir. 147. Male, China-Gansu. 148. Queen, Armenia. 149. Queen, Iran. 150. Male, Georgia. 151. Worker, China-Qinghai. 152. Male, China-Qinghai. 153. Queen, Mongolia. 154. Worker, Mongolia. 155. Male, Mongolia. 156. Male, Mongolia. 157. Queen, China-Sichuan. 158. Worker, China-Qinghai. 159. Worker, China-Qinghai. 160. Male, China-Qinghai. 161. Male, China-Qinghai. 162. Male, China-Qinghai. 163. Queen, Pakistan. 164. Queen, Pakistan. 165. Queen, Pakistan. 166. Queen, Pakistan. 167. Queen, Afghanistan. 168. Queen, Pakistan. 169. Queen, Pakistan. 170. Queen, India-Kashmir. 171. Male, India-Kashmir. 172. Male, India-Kashmir. 173. Queen, ChinaXinjiang. 174. Queen, Kyrgyzstan. 175. Queen, Kyrgyzstan. 176. Queen, Mongolia. 177. Queen, IndiaKashmir. 178. Male, Kazakhstan. 179. Male, China-Xinjiang. 180. Male, Mongolia.
Fig. 7. Sample sites for barcodes for the subgenus Melanobombus von Dalla Torre, 1880 in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)
Fig. 7. Sample sites for barcodes for the subgenus Melanobombus von Dalla Torre, 1880, colour-coded for the order in which the samples of selected barcoded individuals were added to the analyses, from blue (2011) to red (2019) (specimens may be much older). Spherical projection with the North Pole shown as a star, international boundaries as recognized by the UN shown as grey lines. Map projected in ArcGIS using the World_Shaded_Relief basemap © 2014 ESRI.
Figs 1‒6 in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)
Figs 1‒6. Individuals of the subgenus Melanobombus von Dalla Torre, 1880 (with photo credits). 1. Bombus eximius Smith, 1852, queen, Thailand (CT). 2. B. simillimus Smith, 1852, worker, IndiaKashmir (RR). 3. B. prshewalskyi Morawitz, 1880, worker, China-Gansu (PW). 4. B. eriophorus Klug, 1807, queen, Georgia (I. Popov). 5. B. semenovianus (Skorikov, 1914), male, India-Kashmir (PW). 6. B. ladakhensis Richards, 1928, male, China-Gansu (PW). Some images reversed.
Fig. 10. October 2019 in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)
Fig. 10. October 2019 (Fig. 8) Bayesian PTP analysis of MrBayes tree of unique COI barcodes (UHFPTP). Symbols as in Fig. 9.
Fig. 24 in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)
Fig. 24. (Most likely ancestral ranges for lineages of the subgenus Melanobombus von Dalla Torre, 1880. reconstructed with DIVALIKE+J (BioGeoBEARS) using the short-distance dispersal (no jumps) model in Fig. 23, the estimate of species phylogeny in Fig. 22, and with B. nobilis representing the outgroup (not shown). Letters represent the area units defined in Table 5 and in Fig. 23: letter combinations in grey below terminals show species' current distributions; letter combinations above the nodes show the most likely reconstructions for ancestral distributions (with four selected dispersal events numbered), with the probabilities of these solutions for these ancestors shown below the nodes. Species groups discussed in the text are labelled in circles: rp = rufipes-group; fs = festivus-group; rf = rufofasciatus- group; tg = tanguticus-group; la = lapidarius-group; si = sichelii-group; and ke = keriensis-group. Inset map shows sequenced samples for the species groups (blue = the rufipes-group and festivus-group; green = the rufofasciatus-group; yellow = the tanguticus-group and lapidarius-group; orange = the sichelii-group; and red = the keriensis-group) with arrows showing the four numbered dispersal events.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.