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20 results for “Ground-nesting bees”
Imidacloprid exposure through soil and its effect on Anthophora plumipes, a ground-nesting bee
<p>These are the raw data files is associated with the manuscript titled "Neonicotinoid exposure through soil and its effect on Anthophora plumipes, a ground-nesting bee".</p>
FIGURES 12, 13 in Descriptions of the Mature Larvae of Three Australian Ground-Nesting Bees(Hymenoptera: Colletidae: Diphaglossinae and Neopasiphaeinae)
FIGURES 12, 13. SEM micrographs of predefecating larva of Trichocolletes orientalis. 12. Front of head. 13. Close-up of mouthparts, noting huge down-curved labral tubercles and uncertain arrangement of spicules on maxilla as well as clear arrangement of labial palpi laterad of only slightly projecting salivary opening.
FIGURES 2, 3 in Descriptions of the Mature Larvae of Three Australian Ground-Nesting Bees(Hymenoptera: Colletidae: Diphaglossinae and Neopasiphaeinae)
FIGURES 2, 3. Diagrams of mature larva of Leioproctus wanni. Head, frontal and lateral views. Scale bar = 2 cm.
FIGURES 9–11 in Descriptions of the Mature Larvae of Three Australian Ground-Nesting Bees(Hymenoptera: Colletidae: Diphaglossinae and Neopasiphaeinae)
FIGURES 9–11. Diagrams of predefecating larva of Trichocolletes orientalis Batley and Houston. 9. Entire larva, lateral view. Scale bar = 2 cm. 10, 11. Head, frontal and lateral views.
FIGURES 21, 22 in Descriptions of the Mature Larvae of Three Australian Ground-Nesting Bees(Hymenoptera: Colletidae: Diphaglossinae and Neopasiphaeinae)
FIGURES 21, 22. Microphotograph of head and body, lateral views, of a live postdefecating larva of Paracolletes crassipes, revealing texture and color as well as shape of integument.
FIGURES 14–16 in Descriptions of the Mature Larvae of Three Australian Ground-Nesting Bees(Hymenoptera: Colletidae: Diphaglossinae and Neopasiphaeinae)
FIGURES 14–16. Diagrams of postdefecating larva of Paracolletes crassipes Smith. 14. Full body, lateral view. 15, 16. Head, frontal and approximate lateral views.
FIGURES. 4–8 in Descriptions of the Mature Larvae of Three Australian Ground-Nesting Bees(Hymenoptera: Colletidae: Diphaglossinae and Neopasiphaeinae)
FIGURES. 4–8. SEM micrographs of mature larva of L. wanni. 4, 5. Head frontal view and only approximate lateral view (note both left and right antennae visible). 6. Frontal view of mouthparts showing: (a) conspicuous pattern of spicules on labrum between labral tubercles; (b) elongate maxillary palpi; (c) recessed labial palpi; and (d) recessed and somewhat obscure salivary opening lacking lips. 7. SEM micrograph of left side of metasomal segments 5–9, showing projecting spiracles of segments 6–8. 8. Close-up of projecting spiracle.
Fig. 4 in The potential management of a ground-nesting, solitary bee: Anthophora abrupta (Hymenoptera: Apidae)
Fig. 4. Bee activity as indicated by the average number of Anthophora abrupta returning to the nesting site per minute at the mother and daughter nesting aggregations in 2012, 2013, and 2014. The error bars indicate standard error.
Fig. 2. The 1 in The potential management of a ground-nesting, solitary bee: Anthophora abrupta (Hymenoptera: Apidae)
Fig. 2. The 1st daughter nesting aggregation of Anthophora abrupta established 10.3 km from the original nest site in Gainesville, Florida. It was created as a split from the mother nesting aggregation in Mar 2012. Photo: Jason R. Graham.
Fig. 3. A 2 in The potential management of a ground-nesting, solitary bee: Anthophora abrupta (Hymenoptera: Apidae)
Fig. 3. A 2nd daughter nesting aggregation of Anthophora abrupta established 35.7 km from the original nest site in Gainesville, Florida. It was created as a split from the mother nesting aggregation in Mar 2014. Photo: Amanda M. Ellis.
Figure 2 in Generalist ground-nesting bees dominate diversity survey in intensively managed agricultural land
Figure 2. Species richness compared between sampling periods. Dark grey bars: species from the genus Andrena Fabricius (Andrenidae); light grey bars: species from the genera: Halictus Latreille, Lasioglossum Curtis (Halictidae), Osmia Panzer (Megachilidae), and Nomada Scopoli (Apidae); black bars: species from the genus Bombus Latreille (Apidae). Different letters above the dark grey bars indicate a significant statistical difference between sampling periods in total species richness of all sampled genera (F (3, 42) = 20.01, p<0.001).
Figure 1 in Generalist ground-nesting bees dominate diversity survey in intensively managed agricultural land
Figure 1. Total number of bees sampled in this study at the four different sampling periods. Dark grey bars: individuals from the genus Andrena Fabricius (Andrenidae); light grey bars: individuals from the genera: Halictus Latreille, Lasioglossum Curtis (Halictidae), Osmia Panzer (Megachilidae), and Nomada Scopoli (Apidae); black bars: individuals from the genus Bombus Latreille (Apidae). Different letters above the dark grey bars indicate a significant statistical difference between sampling periods in activity-density of individuals from all sampled genera (F (3, 42) = 18.89, p<0.001).
Fig. 1 in A new technique in the excavation of ground-nest bee burrows (Hymenoptera: Apoidea)
Fig. 1. Rubber refills used as tracer for excavation: (A) with graded marks, and (B) glued to each other by their extremities tracing an Epicharis fasciata nest gallery. (C) Posterior gallery excavation in of Epicharis fasciata nests in order to obtain randomly placed brood cells around the rubber refill tracer.
Data from: Associations between soil characteristics and ground-nesting bees on farms
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Grassland extensification enhances nest densities of ground-nesting wild bees
<ol> <li>Ground-nesting wild bees provide essential pollination services in agroecosystems, but they are jeopardized by intensive agricultural management. To mitigate such negative impacts, agri-environment schemes have been implemented. While the success of enhancing floral food resources is relatively well studied, the role of agri-environmental schemes in providing suitable nesting habitat remains underexplored.</li> <li>We studied the effectiveness of meadow extensification according to the Swiss agri-environment scheme in promoting nesting of ground-nesting bees. Using a paired design, we quantified their nests during four rounds (March-June) in pairs of nine randomly selected extensively (i.e. no fertilizer input, postponed first mowing) and nine intensively managed meadows with similar soil properties, slope, exposure and landscape context. Nest numbers and vegetation characteristics were surveyed in areas of 250 m<sup>2</sup>. Vegetation properties were also assessed in 0.5 m × 0.5 m plots around nest locations and randomly selected locations without nests within each meadow to assess their role as drivers of nesting incidence (nest presence/absence) at this plot scale.</li> <li>We found substantially higher nest numbers of ground-nesting bees in extensively (mean ± SE per sampling round = 46.8 ± 14.2) compared to intensively managed meadows (0.8 ± 0.3; no nests in three out of nine intensively managed meadows). Extensively managed meadows harboured nests of several dominant crop pollinator species, including aggregations of e.g. <em>Lasioglossum malachurum</em> contributing to high nest densities in some of them. Number of nests was negatively related to grass cover and vegetation height, which were lower in extensively compared to intensively managed meadows. Plot-level nesting incidence increased with bare ground and moss cover, and decreased with grass cover.</li> <li> <em>Synthesis and applications.</em> Our study shows that extensively managed meadows are better nesting habitats for ground-nesting bees than intensively managed meadows, if reduced management intensity is associated with altered vegetation characteristics such as reduced grass cover and vegetation height, and small-scale availability of bare ground, driving these effects. This highlights that maintaining and promoting extensive management of meadows can promote ground-nesting wild bees, including dominant crop pollinators, not only by enhancing floral resources but also by improving nesting opportunities in agroecosystems.</li> </ol>
Grassland extensification enhances nest densities of ground-nesting wild bees
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Single and combined exposure to ‘bee safe’ pesticides alter behaviour and offspring production in a ground-nesting solitary bee (Xenoglossa pruinosa)
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Data from: Tillage in southeastern U.S. row crops reduces ground-nesting bee incidence and diversity compared to field edges
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FIGURE 1. A in Descriptions of the Mature Larvae of Three Australian Ground-Nesting Bees(Hymenoptera: Colletidae: Diphaglossinae and Neopasiphaeinae)
FIGURE 1. A. Enlarged diagram of head of mature larva of Leioproctus wanni, frontal view, identifying major anatomical features of head capsules of bee larvae. B. Diagrams of mature larva of Leioproctus wanni. Fullbody lateral view. Scale bar = 2 cm.
Fig. 1 in The potential management of a ground-nesting, solitary bee: Anthophora abrupta (Hymenoptera: Apidae)
Fig. 1. The original (mother) nest aggregation of Anthophora abrupta discovered in Apr 2010. The bees were nesting in colloidal clay, in an open air shed, in Gainesville, Florida. Photo: Jason R. Graham.
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