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Showing 1 to 15 of 15 for “"Osmia"”.
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Nesting Biology of Osmia cornifrons: Implications for Population Management
The Japanese hornfaced bee, Osmia cornifrons (Hymenoptera: Megachilidae) is a palearctic mason bee managed for the pollination of early season fruit crops such as apple and blueberry. Since its adoption as a managed pollinator in Japan during the 1940s, a large body of literature has amassed with …
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Nesting aggregation as a Determinant of Brood Parasitism in Mason Bees (Osmia spp.)
… populations. Mason bees (members of the genus Osmia; Hymenoptera: Megachilidae) are important pollinators for agricultural systems and are vulnerable to exploitation by brood parasites, such as kleptoparasitic wasps. High levels of nesting density have the potential to increase rates of brood …
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Strawberries (Frag X Anan) Are Bigger When Native Mason Bees (Osmia lignaria) Are Experimentally Added to Small Farms
<p>Agriculture is the cornerstone of our economy, and pollination plays a vital role in nearly all non-wind pollinated crops. Declining honey bee populations have caused a more diligent investigation into using solitary bees for crop pollination. The native, solitary Orchard Mason Bee has shown to …
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Cold Tolerance, Temperature Mediated Discontinuous Gas Exchange, and Emergence of the Blue Orchard Mason Bee (<i>Osmia lignaria</i>)
… emergence and supercooling point of <em>Osmia lignaria </em>were the subject of this study. One hundred sixty-eight bees were subjected to 5 pre-wintering temperature treatments (two constant temperature controls - 22<sup>o</sup>C, 14<sup>o</sup>C, one of which with and one without a 12h …
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The pollination biology of Haskap (Lonicera caerulea L.: Caprifoliaceae): floral traits and pollinator performance of a new Saskatchewan fruit crop.
… of bees on Haskap: commercial Apis mellifera and Osmia lignaria, and wild Bombus spp. I found that Bombus queens had the highest levels of single visit pollen deposition (SVD), the highest visitation rate, and were observed to be active even during cooler temperatures experienced during Haskap …
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Habitat variation effects on cavity-nesting bee fitness, community assemblages, and parasite interactions in the Colorado Front Range
… my first two chapters, I used the solitary bee, Osmia lignaria as a model species to evaluate bee fitness responses to variations in forest structure, floral density, and climatic conditions. I found that O. lignaria foraged for pollen from specific flora, regardless of on-site presence, which …
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Toxicity assessment of pesticides and biopesticides on wild and managed bees (Hymenoptera, Apoidea), and richness evaluation in mediterranean and tropical agroecosystems
… exposure to Apis mellifera, Bombus terrestris, Osmia bicornis, and Melipona mondury. Changes in feeding behavior and locomotor alterations caused by exposure to EOs were observed on the stingless bee M. mondury. Commonly used pesticides and biopesticides caused reduced survival of ground-nesting …
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Toxicity of Formulated Insecticide Mixtures to Apis and Non-Apis Bees
… <p>Like honeybees, blue orchard bee, Osmia lignaria (Say), contact exposure was examined by simulating (1) when male and female bees are foraging in an orchard and come into spray-contact with premix insecticides, and (2) when male and female bees come into contact with individual …
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An Assessment of Non-Apis Bees as Fruit and Vegetable Crop Pollinators in Southwest Virginia
… non-Apis bees in the genera Andrena, Bombus, and Osmia were as constant as honey bees when foraging on apple. Non-Apis, primarily native, bees made up between 68% (in caneberries) and 83% (in cucurbits) of bees observed visiting crop flowers. While 37–59 species visited crop flowers, there was low …
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Exposure of honeybees (Apis mellifera L.) and other hymenoptera pollinators to different Bacillus thuringiensis based biopesticides in laboratory controlled trials
… specie eusociale con organizzazione in caste, Osmia cornuta, Latreille 1805 e O. rufa, Linnaeus 1758, due specie di api solitarie che nidificano in forma gregaria di proficuo e agevole impiego su diverse colture in pieno campo e in ambiente confinato. Tuttavia, si sta assistendo alla riduzione …
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Death by a thousand cuts: the role of pesticides, predators, and habitat patch characteristics on wild bee and insect communities
… While I did not detect an effect on adult female Osmia lignaria or Megachile rotundata adult brain development, significant changes in the movement characteristics of female O. lignaria and male M. rotundata could have negative consequences for bee populations. Female O. lignaria exposed to …
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BEES AND WASPS IN A CHANGING ENVIRONMENT: MULTIPLE RESPONSES TO ANTHROPISED LANDSCAPES
… (Rossi, 1790) (Hymenoptera: Halictidae) and Osmia cornuta (Latreille, 1805) (Hymenoptera: Megachilidae), and the wasp Polistes dominula (Christ, 1791) (Hymenoptera: Vespidae). The field studies were preceded by a re-analysis of published data on wild bee communities in different cities around …