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21 results for “pollination efficiency”
Fig. 2 in Pollination efficiency on Ipomoea bahiensis (Convolvulaceae): morphological and behavioural aspects of floral visitors
Fig. 2. Relation between the average width of bee species and the width of the internal area of the floral tube of Ipomoea bahiensis. Horizontal dashed lines = confidence interval of the internal area of the floral tube. Points = average visitor size, Bars = confidence interval. Species: (A) Ancyloscelis apiformes; (B) Apis mellifera; (C) Centris (Hemisiela) tarsata; (D) Euglossa (Euglossa) sp.; (E) Gaesischia (Gaesischia) cf. similis; (F) Melipona quadrifasciata; (G) Melitoma segmentaria; (H) Melitoma sp. 1; (I) Melitoma sp. 2; (J) Melitomella murihirta; (K) Ptilithrix cf. plumata; (L) Ptiloglossa sp.; (M) Protomeliturga turnerae; (N) Thygater (Thygater) analis; (O) Trigona spinipes; (P) Augochlora sp.; (Q) Pseudaugochlora pandora
Fig. 1 in Pollination efficiency on Ipomoea bahiensis (Convolvulaceae): morphological and behavioural aspects of floral visitors
Fig. 1. Comparison between the probabilities of fruit formation in different treatments of reproductive biology test and the control in Ipomoea bahiensis (Convolvulaceae), in Feira de Santana (BA). Control in natural conditions in the horizontal line, points = other treatments: apomixis (A), spontaneous self-pollination (SS), manual self-pollination (MS), geitonogamy (G), and xenogamy (X).
Fig. 1 in The efficiency of bees in pollinating ephemeral flowers of Jacquemontia bracteosa (Convolvulaceae)
Fig. 1. Total number of flowers open in Jacquemontia bracteosa Meisn. (Convolvulaceae), daily and monthly, and rainfall (mm), relative humidity (%), and temperature (°C) in the campus of Universidade Estadual de Feira de Santana, BA, Brazil between November 2011 and October 2012. Source: Weather Station of UEFS.
Fig. 2 in Bugs carry pollen too: pollination efficiency of plant bug Pseudatomoscelis seriatus (Hemiptera: Miridae) visiting cotton flowers
Fig. 2. Pollination of cotton, Gossypium hirsutum, by cotton fleahopper, Pseudatomoscelis seriatus: (A) number of seeds per fruit among pollination treatments; (B) seed mass per fruit among pollination treatments; (C) lint weight per fruit among pollination treatments. Bars represent treatment means and error bars represent ± standard error of the mean. Treatment means listed with the same letter are not significantly different (P> 0.05).
Fig. 1 in Bugs carry pollen too: pollination efficiency of plant bug Pseudatomoscelis seriatus (Hemiptera: Miridae) visiting cotton flowers
Fig. 1. Photographs of a cotton fleahopper, Pseudatomoscelis seriatus, taken under a dissecting microscope (A) foraging on a cotton, Gossypium hirsutum, stigma, and (B) carrying cotton pollen grains.
Data from: Pollination efficiency and effectiveness of a male mining bee (Andrena)
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Data from: Efficiency of using electric toothbrush as an alternative to tuning fork for artificial buzz pollination is independent of instrument buzzing frequency
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Data from: Efficient pollination stinks: Corpse flowers use floral trapping and persistent emissions
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Pollinator efficiency of avocado (Persea americana) flower insect visitors
<p>Pollination services from insects are important for higher yield and better fruit quality in avocado (<em>Persea americana Mill.</em>). Measuring pollinator effectiveness is significant for capturing the relative contributions of different insect taxa to pollination services and for identification of the most important pollinators of this globally important crop. In the present study, we tested pollinator efficiency of avocado in Kenya based on pollen deposition after single visits of flowers by different pollinator species and visitation frequency. We monitored the pollination frequency during the flowering period replicated across six farms. Three trees were selected per farm, each <span>with five flower panicles.</span> Out of the <span>14 </span>observed insect flower visitor species, pollen deposition efficiency was highest in the Western honey bee (<em>Apis mellifera L.</em>), followed by the hover fly species (<em>Phytomia incisa W</em>.). These two species had both the highest pollen deposition and pollen grain loads on their bodies. Furthermore, <em>A. mellifera</em> was the most frequent avocado flower visitor followed by Diptera except hoverflies. Our results imply that A. mellifera can be managed to achieve adequate pollination services for avocado, particularly in areas lacking efficient wild pollinators.</p>
Data from: Beyond pollen:ovule ratios: Evolutionary consequences of pollinator dependence and pollination efficiency for pollen and ovule production in angiosperms
<p><strong>Premise</strong>: The relative per‐flower production of ovules and pollen varies broadly with angiosperm mating systems, with outcrossing types commonly producing more pollen grains per ovule than selfing types. The evolutionary causes of this variation are contentious, especially the relevance of pollination risk. Resolution of this debate may have been hampered by its focus on pollen:ovule (P:O) ratios rather than on the evolution of pollen and ovule numbers per se.</p> <p><strong>Methods</strong>: Using published mean ovule and pollen counts, we analyzed associations with the proportion of removed pollen that reaches stigmas (pollen‐transfer efficiency) and differences between pollinator‐dependent and autogamous forms within and among species. Analyses involved Bayesian methods that simultaneously considered variation in pollen and ovule numbers and accounted for phylogenetic relatedness. We also assessed the utility of P:O ratios as mating‐system proxies and their association with female outcrossing rates.</p> <p><strong>Results</strong>: Median pollen number declined consistently with pollen‐transfer efficiency among species, whereas median ovule number did not. Similarly, in both intraspecific and interspecific analyses, pollinator‐dependent plants produced more pollen than autogamous plants, whereas ovule production did not differ statistically. Distributions of P:O ratios overlapped extensively for self‐incompatible and self‐compatible species and for different mating‐system classes, and P:O ratios correlated weakly with outcrossing rate.</p> <p><strong>Conclusions</strong>: Our findings demonstrate that pollinator dependence and pollination efficiency commonly influence the evolution of pollen number per flower but have more limited effects on ovule number. P:O ratios provide ambiguous, possibly misleading, information about mating systems, especially when compared among clades.</p>
Database for "Phenotype-fitness relationships and pollen transfer efficiency of five orchid species with different pollination strategies" American Journal of Botany 2023
<p>Public data from the paper: Phenotype-fitness relationships and pollen transfer efficiency of five orchid species with different pollination strategies by M. Capò, J. Borràs, S. Perellò-Suau, J. Rita and J. Cursach, published in American Journal of Botany 2023. <a href="https://doi.org/10.5281/zenodo.7826601">DOI: 10.5281/zenodo.7826601</a></p>
Data from: Linking pollinator efficiency to patterns of pollen limitation: small bees exploit the plant-pollinator mutualism
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Pollinator efficiency of avocado (Persea americana) flower insect visitors
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Data from: Beyond pollen:ovule ratios: Evolutionary consequences of pollinator dependence and pollination efficiency for pollen and ovule production in angiosperms
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Data from: Male interference with pollination efficiency in a hermaphroditic orchid
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Data from: How efficient is Apis cerana (Hymenoptera: Apidae) in pollinating cabbage, Brassica oleracea var. capitata? pollination behavior, pollinator effectiveness, pollinator requirement, and impact of pollination
Cabbage is a cross-pollinated crop because of sporophytic self-incompatibility, and honey bees play an important role in its pollination. Though Asian honey bees, Apis cerana F., are used in pollination of cabbage, the rate of visitation, behavior, pollinator efficacy, and impact on seed-set are to be determined. Apis cerana occupy a share of 19.18% of all the flower visitors of cabbage in natural habitat of North Western Indian Himalayas. Pollination behavior in terms of peak activity, flowers processed per unit time, time spent per flower, and time spent in search of flowers are studied separately for both pollen and nectar foragers. Pollinator effectiveness as measured by seed set in flowers excluded from bee visitation, single bee visit, and unrestricted pollinator visits was 0.11. Studies on the impact of A. cerana bee pollination in cabbage seed production revealed an increase of 17.28% in siliqua per panicle, with 26.11% increase in seed yield. For assessing the requirement of A. cerana to pollinate one hectare of cabbage, flower availability and the speed with which the pollen and nectar foragers process the flowers are taken into consideration. A forager is estimated to pollinate 4,780 flowers a day, but cabbage flower requires 9.09 visits of A. cerana for optimum seed set. Thus, a maximum of 4,999 bee foragers or 8.33 colonies are needed to effectively pollinate 1 ha of cabbage. Though A. cerana is a good pollinator, our findings suggest that it is not an ideal pollinator of cabbage.
Data from: Fruiting strategies of perennial plants: a resource budget model to couple mast seeding to pollination efficiency and resource allocation strategies
Masting, a breeding strategy common in perennial plants, is defined by seed production that is highly variable over years and synchronized at the population level. Resource budget models (RBMs) proposed that masting relies on two processes: (i) the depletion of plant reserves following high fruiting levels, which leads to marked temporal fluctuations in fruiting; and (ii) outcross pollination that synchronizes seed crops among neighboring trees. We revisited the RBM approach to examine the extent to which masting could be impacted by the degree of pollination efficiency, by taking into account various logistic relationships between pollination success and pollen availability. To link masting to other reproductive traits, we split the reserve depletion coefficient into three biological parameters related to resource allocation strategies for flowering and fruiting. While outcross pollination is considered to be the key mechanism that synchronizes fruiting in RBMs, our model counterintuitively showed that intense masting should arise under low-efficiency pollination. When pollination is very efficient, medium-level masting may occur, provided that the costs of female flowering (relative to pollen production) and of fruiting (maximum fruit set and fruit size) are both very high. Our work highlights the powerful framework of RBMs, which include explicit biological parameters, to link fruiting dynamics to various reproductive traits and to provide new insights into the reproductive strategies of perennial plants.
Data from: How efficient is Apis cerana (Hymenoptera: Apidae) in pollinating cabbage, Brassica oleracea var. capitata? pollination behavior, pollinator effectiveness, pollinator requirement, and impact of pollination
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Data from: Fruiting strategies of perennial plants: a resource budget model to couple mast seeding to pollination efficiency and resource allocation strategies
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Data from: Foraging efficiency and size matching in a plant – pollinator community: the importance of sugar content and tongue length
A longstanding question in ecology is how species interactions are structured within communities. Although evolutionary theory predicts close size matching between floral nectar tube depth and pollinator proboscis length of interacting species, such size matching has seldom been shown and explained in multispecies assemblages. Here, we investigated the degree of size matching among Asteraceae and their pollinators and its relationship with foraging efficiency. The majority of pollinators, especially Hymenoptera, choose plant species on which they had high foraging efficiencies. When proboscides were shorter than nectar tubes, foraging efficiency rapidly decreased because of increased handling time. When proboscides were longer than nectar tubes, a decreased nectar reward rather than an increased handling time made shallow flowers more inefficient to visit. Altogether, this led to close size matching. Overall, our results show the importance of nectar reward and handling time as drivers of plant – pollinator network structure.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.