The Experts below are selected from a list of 33414 Experts worldwide ranked by ideXlab platform
Alexine Keuroghlian - One of the best experts on this subject based on the ideXlab platform.
-
prey Foraging Behavior seasonality and time budgets in black lion tamarins leontopithecus chrysopygus mikan 1823 mammalia callitrichidae
Brazilian Journal of Biology, 2001Co-Authors: Alexine Keuroghlian, Fernando C PassosAbstract:Foraging Behavior, seasonality and time-budgets in the Black Lion Tamarin (L. chrysopygus) was observed in the Caetetus Ecological Station, South-eastern Brazil, during 83 days between November 1988 to October 1990. For the full dry season we found that animal prey represented 11.2% of the black lion tamarin diet, while during the wet season they represented 1.9%. Foraging Behavior made up 19.8% of their total activity in the dry season and only 12.8% in the wet season. These results point out that animal prey are relatively more important during the dry season, due to reduced availability of other resources, e.g. fruits, and that a greater Foraging effort is required when a larger proportion of the diet is animal prey.
-
Foraging Behavior and microhabitats used by black lion tamarins leontopithecus chrysopygus mikan primates callitrichidae
Revista Brasileira De Zoologia, 1999Co-Authors: Fernando C Passos, Alexine KeuroghlianAbstract:Foraging in the Black Lion Tamarin (L. chrysopygus Mikan, 1823) was observed in the Caetetus Ecological Station, Sao Paulo, southeastern Brazil, during 83 days between November 1988 to October 1990. These tamarins use manipulative, specific-site Foraging Behavior. When searching for animal prey items, they examine a variety of microhabitats (dry palm leaves, twigs, under loose bark, in tree cavities). These microhabitats were spatially dispersed among different forest macrohabitats such as swamp forests and dry forested areas. These data indicated that the prey Foraging Behavior of L. chrysopygus was quite variable, and they used a wide variety of microhabitats, different of the other lion tamarin species.
Murray K Clayton - One of the best experts on this subject based on the ideXlab platform.
-
linking the Foraging Behavior of three bee species to pollen dispersal and gene flow
PLOS ONE, 2019Co-Authors: Johanne Brunet, Yang Zhao, Murray K ClaytonAbstract:Foraging Behaviors that impact gene flow can guide the design of pollinator strategies to mitigate gene flow. Reduced gene flow is expected to minimize the impact of genetically engineered (GE) crops on feral and natural populations and to facilitate the coexistence of different agricultural markets. The goal of this study is to link Foraging Behavior to gene flow and identify Behaviors that can help predict gene flow for different bee species. To reach this goal, we first examined and compared the Foraging Behaviors of three distinct bee species, the European honey bee, Apis mellifera L., the common eastern bumble bee, Bombus impatiens Cr., and the alfalfa leafcutting bee, Megachile rotundata F., Foraging on Medicago sativa flowers. Each Foraging Behavior investigated differed among bee species. Both social bees exhibited directionality of movement and had similar residence, in contrast to the random movement and shorter residence of the solitary bee. Tripping rate and net distance traveled differed among the three bee species. We ranked each Behavior among bee species and used the relative ranking as gene flow predictor before testing the predictions against empirical gene flow data. Tripping rate and net distance traveled, but not residence, predicted relative gene dispersal among bee species. Linking specific Behaviors to gene flow provides mechanisms to explain differences in gene flow among bee species and guides the development of management practices to reduce gene flow. Although developed in one system, the approach developed here can be generalized to different plant/pollinator systems.
Fernando C Passos - One of the best experts on this subject based on the ideXlab platform.
-
prey Foraging Behavior seasonality and time budgets in black lion tamarins leontopithecus chrysopygus mikan 1823 mammalia callitrichidae
Brazilian Journal of Biology, 2001Co-Authors: Alexine Keuroghlian, Fernando C PassosAbstract:Foraging Behavior, seasonality and time-budgets in the Black Lion Tamarin (L. chrysopygus) was observed in the Caetetus Ecological Station, South-eastern Brazil, during 83 days between November 1988 to October 1990. For the full dry season we found that animal prey represented 11.2% of the black lion tamarin diet, while during the wet season they represented 1.9%. Foraging Behavior made up 19.8% of their total activity in the dry season and only 12.8% in the wet season. These results point out that animal prey are relatively more important during the dry season, due to reduced availability of other resources, e.g. fruits, and that a greater Foraging effort is required when a larger proportion of the diet is animal prey.
-
Foraging Behavior and microhabitats used by black lion tamarins leontopithecus chrysopygus mikan primates callitrichidae
Revista Brasileira De Zoologia, 1999Co-Authors: Fernando C Passos, Alexine KeuroghlianAbstract:Foraging in the Black Lion Tamarin (L. chrysopygus Mikan, 1823) was observed in the Caetetus Ecological Station, Sao Paulo, southeastern Brazil, during 83 days between November 1988 to October 1990. These tamarins use manipulative, specific-site Foraging Behavior. When searching for animal prey items, they examine a variety of microhabitats (dry palm leaves, twigs, under loose bark, in tree cavities). These microhabitats were spatially dispersed among different forest macrohabitats such as swamp forests and dry forested areas. These data indicated that the prey Foraging Behavior of L. chrysopygus was quite variable, and they used a wide variety of microhabitats, different of the other lion tamarin species.
Robin Hopkins - One of the best experts on this subject based on the ideXlab platform.
-
variation in context dependent Foraging Behavior across pollinators
Ecology and Evolution, 2018Co-Authors: Heather M Briggs, Stuart Graham, Callin M Switzer, Robin HopkinsAbstract:Pollinator Foraging Behavior has direct consequences for plant reproduction and has been implicated in driving floral trait evolution. Exploring the degree to which pollinators exhibit flexibility in Foraging Behavior will add to a mechanistic understanding of how pollinators can impose selection on plant traits. Although plants have evolved suites of floral traits to attract pollinators, flower color is a particularly important aspect of the floral display. Some pollinators show strong innate color preference, but many pollinators display flexibility in preference due to learning associations between rewards and color, or due to variable perception of color in different environments or plant communities. This study examines the flexibility in flower color preference of two groups of native butterfly pollinators under natural field conditions. We find that pipevine swallowtails (Battus philenor) and skippers (family Hesperiidae), the predominate pollinators of the two native Texas Phlox species, Phlox cuspidata and Phlox drummondii, display distinct patterns of color preferences across different contexts. Pipevine swallowtails exhibit highly flexible color preferences and likely utilize other floral traits to make Foraging decisions. In contrast, skippers have consistent color preferences and likely use flower color as a primary cue for Foraging. As a result of this variation in color preference flexibility, the two pollinator groups impose concordant selection on flower color in some contexts but discordant selection in other contexts. This variability could have profound implications for how flower traits respond to pollinator-mediated selection. Our findings suggest that studying dynamics of Behavior in natural field conditions is important for understanding plant-pollinator interactions.
-
variation in context dependent Foraging Behavior across pollinators
bioRxiv, 2017Co-Authors: Heather M Briggs, Stuart Graham, Callin M Switzer, Robin HopkinsAbstract:Pollinator Foraging Behavior has direct consequences for plant reproduction and has been implicated in driving floral trait evolution. Exploring the degree to which pollinators exhibit flexibility in Foraging Behavior will add to a mechanistic understanding of how pollinators can impact selection on plant traits. Although plants have evolved suites of floral traits to attract pollinators, flower color is a particularly important aspect of the floral display. Some pollinators show strong innate color preference, but many pollinators display flexibility in preference due to learning associations between rewards and color, or due to variable perception of color in different environments or plant communities. This study examines the flexibility in flower color preference of two groups of native butterfly pollinators under natural field conditions. Our study reveals that pipevine swallowtails and skippers, the predominate pollinators of the two native Texas Phlox species, display distinct patterns of color preferences across different contexts. Pipevine swallowtails exhibit highly flexible color preferences and likely utilize other floral traits to make Foraging decisions. In contrast, skippers have consistent color preferences and likely use flower color as a primary cue for Foraging. As a result of this variation in color preference flexibility, the two pollinator groups impose concordant selection on flower color in some contexts but discordant selection in other contexts. This variability could have profound implications for how flower traits respond to pollinator-mediated selection. Our findings suggest that studying dynamics of Behavior in natural field conditions is important for understanding plant-pollinator interactions.
Heather M Briggs - One of the best experts on this subject based on the ideXlab platform.
-
variation in context dependent Foraging Behavior across pollinators
Ecology and Evolution, 2018Co-Authors: Heather M Briggs, Stuart Graham, Callin M Switzer, Robin HopkinsAbstract:Pollinator Foraging Behavior has direct consequences for plant reproduction and has been implicated in driving floral trait evolution. Exploring the degree to which pollinators exhibit flexibility in Foraging Behavior will add to a mechanistic understanding of how pollinators can impose selection on plant traits. Although plants have evolved suites of floral traits to attract pollinators, flower color is a particularly important aspect of the floral display. Some pollinators show strong innate color preference, but many pollinators display flexibility in preference due to learning associations between rewards and color, or due to variable perception of color in different environments or plant communities. This study examines the flexibility in flower color preference of two groups of native butterfly pollinators under natural field conditions. We find that pipevine swallowtails (Battus philenor) and skippers (family Hesperiidae), the predominate pollinators of the two native Texas Phlox species, Phlox cuspidata and Phlox drummondii, display distinct patterns of color preferences across different contexts. Pipevine swallowtails exhibit highly flexible color preferences and likely utilize other floral traits to make Foraging decisions. In contrast, skippers have consistent color preferences and likely use flower color as a primary cue for Foraging. As a result of this variation in color preference flexibility, the two pollinator groups impose concordant selection on flower color in some contexts but discordant selection in other contexts. This variability could have profound implications for how flower traits respond to pollinator-mediated selection. Our findings suggest that studying dynamics of Behavior in natural field conditions is important for understanding plant-pollinator interactions.
-
pollinator traits and competitive context shape dynamic Foraging Behavior in bee communities
bioRxiv, 2017Co-Authors: Heather M Briggs, Berry J BrosiAbstract:Interspecific interactions (e.g. competition) can dynamically shape individual and species-level resource use within communities. Understanding how interspecific competition between pollinators species shapes resource use is of particular interest because pollinator Foraging Behavior (i.e. floral fidelity) is directly linked to plant reproductive function through the movement of conspecific pollen. Through targeted species removals, this study aims to gain a predictive understanding of how interspecific competition can influence pollinator Foraging Behavior. We explore how traits, specifically pollinator tongue length, known to dictate pollinator resource partitioning, influence Behavioral plasticity and drive dynamic interspecific interactions. Our results demonstrate that bee species vary in their floral fidelity and that tongue length explains a large part of this variation. Bees with shorter tongues move between plant species (floral infidelity) more often than bees with longer tongues. We did not find significant variation in the response of bee species to a reduction in interspecific competition, but rather saw a guild-wide reduction in floral fidelity in response to the removal of the dominant bee species Finally, our results suggest that tongue length of the most abundant bee species, a site-level attribute, explains much of the site-to-site variation in pollinator Foraging Behavior. In particular, we found that as the tongue length of the most abundant bee in the site increases, the site level Foraging fidelity decreases. With global pollinator populations on the decline, novel interactions between plants and pollinators are likely to occur. Exploring how the competitive landscape shapes Foraging plasticity will help us generalize to other plant pollinator systems and begin to better predict the functional implications of competitive interactions.
-
variation in context dependent Foraging Behavior across pollinators
bioRxiv, 2017Co-Authors: Heather M Briggs, Stuart Graham, Callin M Switzer, Robin HopkinsAbstract:Pollinator Foraging Behavior has direct consequences for plant reproduction and has been implicated in driving floral trait evolution. Exploring the degree to which pollinators exhibit flexibility in Foraging Behavior will add to a mechanistic understanding of how pollinators can impact selection on plant traits. Although plants have evolved suites of floral traits to attract pollinators, flower color is a particularly important aspect of the floral display. Some pollinators show strong innate color preference, but many pollinators display flexibility in preference due to learning associations between rewards and color, or due to variable perception of color in different environments or plant communities. This study examines the flexibility in flower color preference of two groups of native butterfly pollinators under natural field conditions. Our study reveals that pipevine swallowtails and skippers, the predominate pollinators of the two native Texas Phlox species, display distinct patterns of color preferences across different contexts. Pipevine swallowtails exhibit highly flexible color preferences and likely utilize other floral traits to make Foraging decisions. In contrast, skippers have consistent color preferences and likely use flower color as a primary cue for Foraging. As a result of this variation in color preference flexibility, the two pollinator groups impose concordant selection on flower color in some contexts but discordant selection in other contexts. This variability could have profound implications for how flower traits respond to pollinator-mediated selection. Our findings suggest that studying dynamics of Behavior in natural field conditions is important for understanding plant-pollinator interactions.