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4 results for “foraging bout”
Datasets: Laser scarecrows reduce avian corn-foraging propensity but not bout length in aviary trials
<p>This archive is comprised of 3 files:</p> <p>(1) Archive Metadata: a description of the data collection, behavioral sampling, and datafile structure (variables);</p> <p>(2) An excel file containing scan sample data used in 2 analyses; and </p> <p>(3) An excel file containing focal foraging bout data for a 3rd analysis for the named manuscript.</p>
The number of glyphosate resistant seeds produced by each of three bee species as they visit alfalfa flowers in sequence during a foraging bout
<p>Since the release of genetically engineered (GE) crops, there has been increased concern about the introduction of GE genes into non-GE fields of a crop and their spread to feral or wild cross-compatible relatives. More recently, attention has been given to the differential impact of distinct pollinators on gene flow, with the goal of developing isolation distances associated with specific managed pollinators. To examine the differential impact of bee species on gene movement, we <span>quantified the relationship between the probability of getting a GE seed in a pod, and the order in which a flower was visited, or the cumulative distance traveled by a bee in a foraging bout. We refer to these relationships as 'seed curves' and compare these seeds curves among three bee species. </span>The experiments used <em><span>Medicago sativa</span></em><span> L. plants carrying three copies of the glyphosate resistance (GR) allele as pollen donors (<em>M. sativa</em> is a tetraploid), such that each pollen grain carried the GR allele, and conventional plants as pollen recipients. </span><span>Different foraging metrics, including the number of GR seeds produced over a foraging bout, were also quantified and contrasted among bee species. The lowest number of GR seeds set per foraging bout, and the GR seeds set at the shortest distances, were produced following leafcutting bee visits. In contrast, GR seeds were found at the longest distances following bumble bee visits. Values for honey bees were intermediate. The ranking of bee species based on seed curves correlated well with field-based gene flow estimates. Thus, differential seed curves of bee species, which describe patterns of seed production within foraging bouts, translated into distinct abilities of bee species to move genes at a landscape level. Bee behavior at a local scale (foraging bout) helps predict gene flow and </span><span>the spread of GE genes at the landscape scale. </span></p>
The number of glyphosate resistant seeds produced by each of three bee species as they visit alfalfa flowers in sequence during a foraging bout
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Data from: Nutritional complexity and the structure of bee foraging bouts
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