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Full-Text Articles in Life Sciences
Co-Dependency Between A Specialist Andrena Bee And Its Death Camas Host, Toxicoscordion Paniculatum, James H. Cane
Co-Dependency Between A Specialist Andrena Bee And Its Death Camas Host, Toxicoscordion Paniculatum, James H. Cane
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Among associations of plants and their pollinating bees, mutually specialized pairings are rare. Typically, either pollen specialist (oligolectic) bees are joined by polylectic bees in a flowering species’ pollinator guild, or specialized flowers are pollinated by one or more polylectic bees. The bee Andrena astragali is a narrow oligolege, collecting pollen solely from two nearly identical species of death camas (Toxicoscordion, formerly Zigadenus). Neurotoxic alkaloids of these plants are implicated in sheep and honey bee poisoning. In this study, T. paniculatum, T. venenosum and co-flowering forbs were sampled for bees at 15 sites along a 900-km-long east–west …
A Nonlethal Method To Examine Non-Apis Bees For Mark-Capture Research, Natalie K. Boyle, Amber D. Tripodi, Scott A. Machtley, James P. Strange, Theresa L. Pitts-Singer, James R. Hagler
A Nonlethal Method To Examine Non-Apis Bees For Mark-Capture Research, Natalie K. Boyle, Amber D. Tripodi, Scott A. Machtley, James P. Strange, Theresa L. Pitts-Singer, James R. Hagler
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Studies of bee movement and activities across a landscape are important for developing an understanding of their behavior and their ability to withstand environmental stress. Recent research has shown that proteins, such as egg albumin, are effective for mass-marking bees. However, current protein mass-marking techniques require sacrificing individual bees during the data collection process. A nonlethal sampling method for protein mark-capture research is sorely needed, particularly for vulnerable, sensitive, or economically valuable species. This study describes a nonlethal sampling method, in which three non-Apis bee species (Bombus bifarius Cresson [Hymenoptera: Apidae], Osmia lignaria Say [Hymenoptera: Megachilidae], …
Utilization Of Additional Species And Populations Of Leafcutter Bees For Alfalfa Pollination, Frank D. Parker, P. F. Torchio, William P. Nye, M. Pedersen
Utilization Of Additional Species And Populations Of Leafcutter Bees For Alfalfa Pollination, Frank D. Parker, P. F. Torchio, William P. Nye, M. Pedersen
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No abstract provided.
Insect Pollination And Seed Set Of Onions (Allium Cepa L.), William P. Nye, N. S. Shasha'a, W. F. Campbell, A. R. Hamson
Insect Pollination And Seed Set Of Onions (Allium Cepa L.), William P. Nye, N. S. Shasha'a, W. F. Campbell, A. R. Hamson
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No abstract provided.
Efficiency Of Alfalfa Pollination By Different Species Of Bees, William P. Nye
Efficiency Of Alfalfa Pollination By Different Species Of Bees, William P. Nye
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No abstract provided.
Introduction Of Small Carpenter Bees Into California For Pollination 1. Release Of Pithitis Smaragdula, Howell V. Daly, George E. Bohart, Robbin W. Thorp
Introduction Of Small Carpenter Bees Into California For Pollination 1. Release Of Pithitis Smaragdula, Howell V. Daly, George E. Bohart, Robbin W. Thorp
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Pithitis smaragdula (F.) is a bright green, small carpenter bee which is widespread in the oriental region and is known to pollinate economically important plants, especially legumes and cucurbits. About 300 bees imported from Ludhiana, India, were released 10 April 1969, at Davis, California. Subsequent collecting during the 1st season confirmed that one or more generations of the bees had been reared and that Trifolium repens L. was visited for pollen. Although the overwintering bees under observation died from unknown causes, and no living bees were found in 1970, it is possible that the bees survived elsewhere. Ecological factors believed …
Factors Affecting Pollination Of Onions In Idaho During 1969, William P. Nye, G. D. Waller, N. D. Waters
Factors Affecting Pollination Of Onions In Idaho During 1969, William P. Nye, G. D. Waller, N. D. Waters
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No abstract provided.
The Pollination Requirements Of Insect-Pollinated Seed Crops, George E. Bohart
The Pollination Requirements Of Insect-Pollinated Seed Crops, George E. Bohart
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No abstract provided.
Pollination Of Onion Seed Affected By Environmental Stresses, William P. Nye
Pollination Of Onion Seed Affected By Environmental Stresses, William P. Nye
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No abstract provided.
Should Beekeepers Keep Wild Bees For Pollination?, George E. Bohart
Should Beekeepers Keep Wild Bees For Pollination?, George E. Bohart
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No abstract provided.
Breeding Honey Bees For Pollination Of Specific Crops, O. Mackensen, William P. Nye
Breeding Honey Bees For Pollination Of Specific Crops, O. Mackensen, William P. Nye
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No abstract provided.
Studies On Pollination Of Diploid And Tetraploid Red Clover Varieties In Utah, George E. Bohart
Studies On Pollination Of Diploid And Tetraploid Red Clover Varieties In Utah, George E. Bohart
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No abstract provided.
Management Of Honeybee Colonies For Pollination In Cages, William P. Nye
Management Of Honeybee Colonies For Pollination In Cages, William P. Nye
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The use of bees for pollination is extending in various directions, and each extension brings with it new problems to be solved. Infields and orchards, the main problem may be to get the bees to visit all the flowers. In a small plot, this can be ensured by enclosing the plot and a hive of bees in a cage, but special steps are then needed to ensure the well-being of the bees. In this article Mr. Nye, who is on the staff of the Entomology Research Division of the United States Department of Agriculture, describes the colony management necessary. The …
Nectar Sugar Concentration As A Measure Of Pollination Of Alfalfa (Medicago Sativa L.), William P. Nye, M. W. Pedersen
Nectar Sugar Concentration As A Measure Of Pollination Of Alfalfa (Medicago Sativa L.), William P. Nye, M. W. Pedersen
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The "visitation rate of honeybees on alfalfa may possibly be measured by determining the sugar concentration of nectar in the honey stomachs of foraging bees. This concentration is shown to be largely controlled by the relative humidity and the time available for nectar evaporation in the alfalfa blossom, which in turn depends on the rate of visitation by honeybees. An adjustment for relative humidity may be necessary in order to compare readings widely separated in time or location. Where conditions are relatively constant from day to day, it may be sufficient to measure the nectar sugar concentration and relative humidity …
Pollination Of Seed Crops By Insects (In Seeds. The Yearbook Of Agriculture), George E. Bohart, Frank E. Todd
Pollination Of Seed Crops By Insects (In Seeds. The Yearbook Of Agriculture), George E. Bohart, Frank E. Todd
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No abstract provided.
Carrot Seed Production As Affected By Insect Pollination, Hawthorn L. R., George E. Bohart, E. H. Toole, William P. Nye, M. D. Levin
Carrot Seed Production As Affected By Insect Pollination, Hawthorn L. R., George E. Bohart, E. H. Toole, William P. Nye, M. D. Levin
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No abstract provided.
Distance From The Apiary As A Factor In Alfalfa Pollination, M. D. Levin, George E. Bohart, William P. Nye
Distance From The Apiary As A Factor In Alfalfa Pollination, M. D. Levin, George E. Bohart, William P. Nye
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Experiments conducted in northern Utah indicated that the distribution of honey bees (Apis mellifera L.) on an alfalfa field is modified by various influences besides distance from the colonies. Because of these other factors, generalizations concerning the effect of distance from colonies on the distribution of foraging honey bees cannot be made on the basis of experiments herein reported. A slight negative relationship between bee populations and distance from colonies in alfalfa fields was found in some of the experiments reported. In two fields where the distance was less than 600 feet, horizontal stratification of the field population …
Wild Bees For Pollination Of The Alfalfa Seed Crop In Utah, George E. Bohart, George F. Knowlton
Wild Bees For Pollination Of The Alfalfa Seed Crop In Utah, George E. Bohart, George F. Knowlton
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No abstract provided.