Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
13
datasets available to search
ShareScore release 0.7.1
Dataset results
13 results for “pollen competition”
Data from: Pollen competition between morphs in a pollen-color dimorphic herb and the loss of phenotypic polymorphism within populations
Flower color polymorphism is relatively uncommon in natural flowering plants, suggesting that maintenance of different color morphs within populations is difficult. To address the selective mechanisms shaping pollen-color dimorphism, pollinator preferences and reproductive performance were studied over three years in Epimedium pubescens in which some populations had plants with either green or yellow pollen (and anthers). Visitation rate and pollen removal and receipt by the bee pollinator (Andrena emeishanica) did not differ between the two color morphs. Compared to the green morph, siring success of the yellow morph's pollen was lower, but that of mixtures of pollen from green and yellow morphs was lowest. This difference, corresponding to in and ex vivo experiments on pollen performance, indicated that pollen germination, rather than tube growth, of the green morph was higher than that of the yellow morph and was seriously constrained in both morphs if a pollen competitor was present. A rare green morph may invade a yellow-morph population, but the co-existence of pollen color variants is complicated by the reduced siring success of mixed pollinations. Potential pollen competition between morphs may have discouraged the maintenance of multiple phenotypes within populations, a cryptic mechanism of competitive exclusion.
Data from: Pollen competition between morphs in a pollen-color dimorphic herb and the loss of phenotypic polymorphism within populations
Open the record for dataset details and reuse information.
Recipient and donor characteristics govern the hierarchical structure of heterospecific pollen competition networks
<ul> <li>Pollinator sharing can have negative consequences for plant fitness with the arrival of foreign (i.e. heterospecific) pollen, yet responses are often variable among species. Plant traits and relatedness of donor and recipient species have been suggested to drive the variations in plant fitness, but how they shape the structure of pollen competition networks has been overlooked at the community level.</li> <li>To understand the importance of reproductive traits and relatedness on the impacts of heterospecific pollen we conducted a controlled glasshouse experiment with an artificial co-flowering community. We performed 1800 reciprocal crosses by experimentally transferring 50% and 100% foreign pollen among 10 species belonging to three different plant families.</li> <li>We found a significant reduction in seed set with 50% foreign pollen for 67% of the crosses driven largely by recipient traits and the interaction between recipient-donor traits under specific circumstances of trait-matching. In general, species with shorter styles, smaller stigmas and lower pollen:ovule ratios were more impacted by foreign pollen. These traits and their differences among species led to a hierarchical (or transitive) structure of pollen competition with clear winners and losers. However, phylogenetic distance among recipient and donor species did not explain the effects.</li> <li> <i>Synthesis</i>: Our study shows that specific traits and trait combinations between donor and recipient species are important in determining fitness outcomes with heterospecific pollen deposition. Moreover, the differences in traits between species lead to a competitive structure with clear "winners" or "losers" species. The results of this study indicate the need to shift from pairwise to community level interactions to elucidate the mechanisms underlying foreign pollen impacts upon plant reproductive fitness.</li> </ul>
FIGURES 43–50 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 43–50. Microlia cayaponia sp. nov., aedeagus. 43, whole aedeagus, ventral; 44, median lobe, lateral; 45, apex of median lobe, lateral; 46, apex of median lobe, detail of dentate region; 47, paramere, internal view; 48, apex of paramere; 49, paramere, outer view; 50, apex of paramere. Scale bars: 43–44, 47, 49, 0.02 mm; 45, 50 0.01 mm; 46, 0.002 mm; 48, 0.003 mm.
FIGURES 26–28 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 26–28. Microlia cayaponia sp. nov., antenna. 26, whole antenna; 27, antennomere 11; 28, detail of a sensillum of antennomere 11. Scale bars: 26, 27, 0.01 mm; 28, 0.001 mm.
FIGURES 1–2 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 1–2. Microlia cayaponia sp. nov., holotype, male. 1, lateral habitus; 2, dorsal habitus. About 1.7 mm, from tip of the head to abdominal apex.
FIGURES 5–25 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 5–25. Microlia cayaponia sp. nov., paratypes, 5, left mandible (dorsal), 6, left mandible (ventral), 7, mandible, ventrolateral view, with arrow indicating the medial tooth; 8, prementum; 9, labrum; 10, maxilla; tergite VIII (11, up, male;12, bottom, female); sternite VIII (13, up, male;14, bottom, female); 15, sternite X (male); 16, sternite IX (male); 17, sternites X and IX (female, arrow indicating SIX); 18, tergite X (male); 19, tergite X, female; 20, aedeagus; 21, medium lobe of aedeagus; 22, lateral lobe of aedeagus; 23, sponge-like structure of lateral lobe of aedeagus; 24, apex of lateral lobe of aedeagus; 25, spermatheca. Scale bars: 5–7, 11–25, 0.005 mm; 8, 0.0006 mm; 9, 0.002 mm; 10, 0.01 mm.
FIGURES 34–42 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 34–42. Microlia cayaponia sp. nov., 34, dorsal habitus (male); 35, sternite VIII (male, rows of three bristles colored purple); 36, sternite VIII (female, rows of two bristles colored purple); 37, tergite VII; 38, tergite VII, detail of bristles at apical margin; 39, sternite IX (male); 40, sternite IX, apex (male); 41, tergite IX (male, one long bristle broken); 42, tergite X (male). Scale bars: 34, 0.1 mm; 35–37, 0.01 mm; 38, 0.001 mm; 39, 41–42, 0.02 mm; 40, 0.003.
FIGURES 3–4 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 3–4. Microlia cayaponia sp. nov., paratype, female. 3, lateral habitus; 4, dorsal habitus. About 1.6 mm, from tip of the head to abdominal apex.
FIGURES 51–53 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 51–53. Microlia cayaponia sp. nov. on flowers of Cayaponia spp. 51, female flower of C. pilosa; 52, male flower of C. pilosa; 53, female flower of C. cabocla, close to the momentum the peduncle breaks.
FIGURES 29–33 in Microlia cayaponia, a new pollen-feeder species from Brazil (Staphylinidae: Aleocharinae: Hoplandriini) and its potential competition in pollinator activity in Cayaponia plants (Cucurbitaceae)
FIGURES 29–33. Microlia cayaponia sp. nov., head. 29, dorsal; 30, ventral; 31, mentum-submentum; 32, right mandible, front-dorsal view; 33, right mandible, apex, with medial tooth colored purple. Scale bars: 29, 0.03 mm; 30, 0.02 mm; 31–32, 0.01 mm; 32, 0.003 mm.
Recipient and donor characteristics govern the hierarchical structure of heterospecific pollen competition networks
Open the record for dataset details and reuse information.
Data from: Selection for pollen competitive ability in mixed-mating systems
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.