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6 results for “mutualism breakdown”
Data from: Network reorganization and breakdown of an ant–plant protection mutualism with elevation
Both the abiotic environment and the composition of animal and plant communities change with elevation. For mutualistic species, these changes are expected to result in altered partner availability, and shifts in context-dependent benefits for partners. To test these predictions, we assessed the network structure of terrestrial ant-plant mutualists and how the benefits to plants of ant inhabitation changed with elevation in tropical forest in Papua New Guinea. At higher elevations, ant-plants were rarer, species richness of both ants and plants decreased, and the average ant or plant species interacted with fewer partners. However, networks became increasingly connected and less specialized, more than could be accounted for by reductions in ant-plant abundance. On the most common ant-plant, ants recruited less and spent less time attacking a surrogate herbivore at higher elevations, and herbivory damage increased. These changes were driven by turnover of ant species rather than by within-species shifts in protective behaviour. We speculate that reduced partner availability at higher elevations results in less specialized networks, while lower temperatures mean that even for ant-inhabited plants, benefits are reduced. Under increased abiotic stress, mutualistic networks can break down, owing to a combination of lower population sizes, and a reduction in context-dependent mutualistic benefits.
Data from: Recurrent mutualism breakdown events in a legume rhizobia metapopulation
<p><span>Bacterial mutualists generate major fitness benefits for eukaryotes, reshaping the host phenotype and its interactions with the environment. Yet microbial mutualist populations are predicted to generate mutants that defect from providing costly services to hosts while maintaining the capacity to exploit host resources. Here, we examined the mutualist service of symbiotic nitrogen fixation in a metapopulation of root-nodulating <i>Bradyrhizobium spp.</i> that associate with the native legume <i>Acmispon strigosus</i>. We quantified mutualism traits of 85 <i>Bradyrhizobium</i> isolates gathered from a 700km transect in California spanning ten sampled <i>A. strigosus</i> populations. We clonally inoculated each <i>Bradyrhizobium </i>isolate onto <i>Acmispon strigosus</i> hosts and quantified nodulation capacity and net effects of infection, including host growth and isotopic nitrogen concentration. Six <i>Bradyrhizobium</i> isolates from five populations were categorized as ineffective because they formed nodules but did not enhance host growth via nitrogen fixation. Six additional isolates from three populations failed to form root nodules. Phylogenetic reconstruction inferred two types of mutualism breakdown, including three to four independent losses of effectiveness and five losses of nodulation capacity on <i>Acmispon strigosus</i>. The evolutionary and genomic drivers of these mutualism breakdown events remain poorly understood. </span></p>
Data from: Recurrent mutualism breakdown events in a legume rhizobia metapopulation
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To clean or not to clean: cleaning mutualism breakdown in a tidal environment
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Data from: Network reorganization and breakdown of an ant–plant protection mutualism with elevation
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Data for Anemone bleaching leads to the breakdown of a fish-anemone mutualism
<p>Data for Anemone bleaching leads to the breakdown of a fish-anemone mutualism</p>
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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.