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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Timing Of Invasion By Africanized Bees Coincides With Local Extinction Of A Specialized Pollinator Of A Rare Poppy In Utah, Usa, Amber D. Tripodi, Vincent J. Tepedino, Zachary M. Portman
Timing Of Invasion By Africanized Bees Coincides With Local Extinction Of A Specialized Pollinator Of A Rare Poppy In Utah, Usa, Amber D. Tripodi, Vincent J. Tepedino, Zachary M. Portman
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The introduction of exotic species can have profound impacts on mutualisms between native species in invaded areas. However, determining whether a new invader has impacted native species depends on accurately reconstructing the invasion timing. The arrival of Africanized honey bees (AHB) in southern Utah at some point between 1994 and 2011 has recently been implicated in the local extinction of Perdita meconis, a native specialist pollinator of an endangered poppy, Arctomecon humilis. Although AHBs were purportedly first detected in southern Utah in 2008, their presence in nearby Nevada, Arizona, and New Mexico by 1998–2001 suggests that they may …
A Review And Updated Classification Of Pollen Gathering Behavior In Bees (Hymenoptera, Apoidea), Zachary M. Portman, Michael C. Orr, Terry Griswold
A Review And Updated Classification Of Pollen Gathering Behavior In Bees (Hymenoptera, Apoidea), Zachary M. Portman, Michael C. Orr, Terry Griswold
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Pollen is the primary protein and nutrient source for bees and they employ many different behaviors to gather it. Numerous terms have been coined to describe pollen gathering behaviors, creating confusion as many are not clearly-defined or overlap with existing terms. There is a need for a clear yet flexible classification that enables accurate, succinct descriptions of pollen gathering behaviors to enable meaningful discussion and comparison. Here, we classify the different pollen gathering behaviors into two main classes: active and incidental pollen collection. Active pollen collection is subdivided into six behaviors: scraping with the extremities, buzzing, rubbing with the body …
Ant Diversity Patterns Across Tropical Elevation Gradients: Effects Of Sampling Method And Subcommunity, John T. Longino, Michael G. Branstetter, Philip S. Ward
Ant Diversity Patterns Across Tropical Elevation Gradients: Effects Of Sampling Method And Subcommunity, John T. Longino, Michael G. Branstetter, Philip S. Ward
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Local diversity may be influenced by niche assembly processes involving competition for limited resources, or by niche conservatism and the length of time clades have had to diversify. Mid‐elevation peaks in ant diversity on wet forest elevational gradients are most consistent with niche conservatism effects. However, it is possible that subsets of the ant community vary in the degree to which niche assembly processes are important, and this may be revealed by sampling methods that bias toward particular subsets. A previous study of ant‐elevation patterns in Middle American wet forest relied on Winkler sampling, a method that samples much of …
A Homeotic Shift Late In Development Drives Mimetic Color Variation In A Bumble Bee, Li Tian, Sarthok Rasique Rahman, Briana D. Ezray, Luca Franzini, James P. Strange, Patrick Lhomme, Heather M. Hines
A Homeotic Shift Late In Development Drives Mimetic Color Variation In A Bumble Bee, Li Tian, Sarthok Rasique Rahman, Briana D. Ezray, Luca Franzini, James P. Strange, Patrick Lhomme, Heather M. Hines
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Natural phenotypic radiations, with their high diversity and convergence, are well-suited for informing how genomic changes translate to natural phenotypic variation. New genomic tools enable discovery in such traditionally nonmodel systems. Here, we characterize the genomic basis of color pattern variation in bumble bees (Hymenoptera, Apidae, Bombus), a group that has undergone extensive convergence of setal color patterns as a result of Müllerian mimicry. In western North America, multiple species converge on local mimicry patterns through parallel shifts of midabdominal segments from red to black. Using genome-wide association, we establish that a cis-regulatory locus between the abdominal …
Foraging Economics Of The Hunt Bumble Bee, A Viable Pollinator For Commercial Agriculture, Abby Baur, James P. Strange, Jonathan B. Koch
Foraging Economics Of The Hunt Bumble Bee, A Viable Pollinator For Commercial Agriculture, Abby Baur, James P. Strange, Jonathan B. Koch
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Globally, there are only five bumble bee (Hymenoptera: Apidae, Bombus) species that have been successfully commercialized for agriculture. The Hunt bumble bee, Bombus huntii Green, 1860, has been recognized as a suitable pollinator of crops and has a broad distribution in western North America, making it a viable candidate for commercialization. In this study, our goal was to characterize the foraging dynamics of B. huntii female workers under open field conditions. To accomplish this goal, we monitored three B. huntii colonies over an 8-wk period in the summer of 2012 in northern Utah. Using marked bees, we studied the …
Wild Bee Diversity Increases With Local Fire Severity In A Fire‐Prone Landscape, Sara M. Galbraith, James H. Cane, Andrew R. Moldenke, James W. Rivers
Wild Bee Diversity Increases With Local Fire Severity In A Fire‐Prone Landscape, Sara M. Galbraith, James H. Cane, Andrew R. Moldenke, James W. Rivers
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As wildfire activity increases in many regions of the world, it is imperative that we understand how key components of fire‐prone ecosystems respond to spatial variation in fire characteristics. Pollinators provide a foundation for ecological communities by assisting in the reproduction of native plants, yet our understanding of how pollinators such as wild bees respond to variation in fire severity is limited, particularly for forest ecosystems. Here, we took advantage of a natural experiment created by a large‐scale, mixed‐severity wildfire to provide the first assessment of how wild bee communities are shaped by fire severity in mixed‐conifer forest. We sampled …
Decades Of Native Bee Biodiversity Surveys At Pinnacles National Park Highlight The Importance Of Monitoring Natural Areas Over Time, Joan M. Meiners, Terry L. Griswold, Olivia Messinger Carril
Decades Of Native Bee Biodiversity Surveys At Pinnacles National Park Highlight The Importance Of Monitoring Natural Areas Over Time, Joan M. Meiners, Terry L. Griswold, Olivia Messinger Carril
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Thousands of species of bees are in global decline, yet research addressing the ecology and status of these wild pollinators lags far behind work being done to address similar impacts on the managed honey bee. This knowledge gap is especially glaring in natural areas, despite knowledge that protected habitats harbor and export diverse bee communities into nearby croplands where their pollination services have been valued at over $3 billion per year. Surrounded by ranches and farmlands, Pinnacles National Park in the Inner South Coast Range of California contains intact Mediterranean chaparral shrubland. This habitat type is among the most valuable …