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360 results for “Defence”
Data for: Fitness costs of female competition linked to resource defence and relatedness of competitors
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Colony defence in bumblebees (<em>Bombus terrestris</em>)
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Data from: Evolution of defence and herbivory in introduced plants - testing enemy release using a known source population, herbivore trials and time since introduction
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Invasive plant species that experience lower herbivory pressure may evolve lower diversities of chemical defence compounds in the exotic range
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Data from: Tetranychus evansi spider mite populations suppress tomato defences to varying degrees
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Data from: A trait-based root acquisition-defence-decomposition framework in angiosperm tree species
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Aphid infestation differently affects the defences of nitrate-fed and nitrogenfixing Medicago truncatula and alters symbiotic nitrogen fixation
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Late instar monarch caterpillars sabotage milkweed to acquire toxins, not to disarm plant defence
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Data from: Not just the sum of its parts: Geographic variation and nonadditive effects of pyrazines in the chemical defence of an aposematic moth
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Evolution of aquatic snails' defences resulted in clade-specific differences in egg toxicity, pigments, and warning colouration
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Data from: Silicon supplementation and jasmonate activation synergistically increase phenolic defences against a legume herbivore
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Convergent evolution of elaborate nests as structural defences in birds
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Short-term resistance that persists: Rapidly induced silicon anti-herbivore defence affects carbon-based plant defences
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Structural defence is coupled with the leaf economic spectrum across saplings of spiny species
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Group augmentation on trial: helpers in small groups enhance antipredator defence of eggs
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Supplementary material from: Fiddler crab claws work as a deflection antipredator defence
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A bacterial toxin-antitoxin system as a native defence element against RNA phages
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Diet influences resource allocation in chemical defence in an aposematic moth
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Data from: Florivory defence: are phenolic compounds distributed differently within perianths?
Plants might allocate chemical defenses unequally within attractive units of flowers including petals, sepals, and bracts because of variations in the probability of florivory. Based on the optimal defense theory, which predicts that plants allocate higher chemical defenses to tissues with higher probabilities of herbivore attack, we predicted that distal parts and sepals would have higher chemical defense allocations than proximal parts and petals. To test this prediction, we compared total phenolics and condensed tannins concentrations as well as presence of florivory within attractive units of ten angiosperm species. In agreement with the prediction, the overall results showed that the distal parts had higher total phenolics and condensed tannins than the proximal parts. On the other hand, contrary to the prediction, petals and sepals showed no tissue-specific variations. Florivory was more severe on the distal parts than the proximal parts, although statistical support for the variation was slightly weak, while the variations in presence of florivory between petals and sepals differed between the distal and proximal parts. These results may support the prediction of the optimal defense theory because distal parts of attractive units had higher presence of florivory and concentration of chemical defenses.
Data from: Fungal volatiles influence plant defence against aboveground and belowground herbivory
<ol> <li>Plants have evolved resistance traits that negatively affect attackers, and tolerance traits that sustain plant growth despite herbivore damage. These mechanisms often co-occur in a mixed-defence strategy, balancing resistance and tolerance. These plant defences can be enhanced upon interaction with soil microorganisms.</li> <li>Here, we investigated the effects of volatiles emitted by soil-borne fungi on plant defence to insect herbivory, and on plant phenology.</li> <li>We exposed roots of <i>Brassica rapa </i>plants to volatiles emitted by four soil-borne fungi. As a proxy of plant resistance, we assessed the performance of <i>Pieris brassicae</i>, a caterpillar feeding on leaves and inflorescences, and of <i>Delia radicum</i>, an insect root herbivore. As a proxy of plant tolerance, we compared growth of volatile-exposed plants challenged with or without insects. Additionally, we assessed the effects on plant phenology by recording bolting time and by counting the number of buds and flowers.</li> <li>Plant exposure to fungal volatiles differentially affected plant resistance to above- and belowground herbivory. Performance of <i>P. brassicae</i> caterpillars differed between the fungal volatile-exposed plants but were variable between experimental batches. In contrast, the effects of fungal volatiles on <i>D. radicum</i> performance was predominantly negative, indicating an increased plant resistance. Despite root consumption by <i>D. radicum</i>, root dry weight remained unchanged in infested plants compared with uninfested ones, irrespectively of the volatile exposure, suggesting compensation for the tissue loss, sometimes at the cost of undamaged aboveground tissues. When<i> B. rapa</i> plants were attacked by <i>P. brassicae</i> caterpillars, only exposure to volatiles of some fungi led to compensation for the loss of aboveground tissues consumed by the caterpillars, which differed between leaves and inflorescences. Furthermore, bolting was accelerated in response to volatiles of some fungi, resulting in more buds and flowers, which suggests a potential enhancement of plant fitness.</li> <li>Our data show that fungal volatiles can modulate the mixed-defence strategies of <i>B. rapa</i> plants, balancing plant resistance and tolerance to above- and belowground herbivory. These effects may be variable and were fungus-specific. Ultimately, plant fitness may be enhanced upon root exposure to fungal volatiles. <p> </p> </li> </ol>
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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)
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.