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50 results for “evolution of mimicry”
Data from: Is the evolution of inaccurate mimicry a result of selection by a suite of predators? A case study using myrmecomorphic spiders
Several hypotheses have been put forward to explain the evolution of inaccurate mimicry. Here we investigated the novel hypothesis that inaccurate mimicry (in color and shape) is maintained by opposing selective pressures from a suite of different predators: model-aversive visually oriented predators and model- and mimic-specialized predators indifferent to mimetic cues. We hypothesize that spiders resembling ants in color and shape escape predators that typically avoid ants, but fall prey to ant-eating predators. We tested whether inaccurate myrmecomorphic spiders are perceived as their models by two types of predators, and whether they can escape from these predators. We found that model-specialized (ant-eating) predators captured mimics significantly less frequently than their ant models, because mimics changed their behavior by fleeing predatory attacks. The fastest escape was found in less accurate mimics, indicating a negative association between visual resemblance and effectiveness of defenses. In trials with spider-eating predators, mimics were not captured more frequently than their models. The quality of defensive mechanisms appears to result from opposing selection forces exerted by the predator complex: mimics are more accurate (in color and shape) in microhabitats dominated by model-aversive predators, and less accurate in microhabitats with model- and mimic-specialized predators.
Data from: Learning of salient prey traits explains Batesian mimicry evolution
Batesian mimicry evolution entails an initial major mutation that produces a rough resemblance to the model, followed by smaller improving changes. To examine the learning psychology of this process, we applied established ideas about mimicry in Papilio polyxenes asterius of the model Battus philenor. We performed experiments with wild birds as predators and butterfly wings as semi-artificial prey. Wings of hybrids of P. p. asterius and P. machaon were used to approximate the first mutant, with melanism as the hypothesized first mimetic trait. Based on previous results about learning psychology and imperfect mimicry, we predicted that: melanism should have high salience (i.e., being noticeable and prominent), meaning that predators readily discriminate a melanistic mutant from appearances similar to P. machaon; the difference between the first mutant and the model should have intermediate salience, to allow further improvement of mimicry; and the final difference in appearance between P. p. asterius and B. philenor should have very low salience, causing improvement to level off. Our results supported both the traditional hypothesis and all our predictions about relative salience. We conclude that there is good agreement between long-held ideas about how Batesian mimicry evolves and recent insights from learning psychology about the role of salience in mimicry evolution.
Data from: Immune evasion and the evolution of molecular mimicry in parasites
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Data from: Is the evolution of inaccurate mimicry a result of selection by a suite of predators? A case study using myrmecomorphic spiders
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Data from: Learning of salient prey traits explains Batesian mimicry evolution
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Data from: Coral snakes predict the evolution of mimicry across New World snakes
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Butterfly wing pattern mimicry radiated via parallel evolution of ancient, pleiotropic enhancers [HiC-seq]
GEO Series GSE123703. Heliconius erato lativitta. 4 samples. Type: Other.
Butterfly wing pattern mimicry radiated via parallel evolution of ancient, pleiotropic enhancers [ChIP-Seq]
GEO Series GSE123701. Heliconius erato lativitta. 8 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Butterfly wing pattern mimicry radiated via parallel evolution of ancient, pleiotropic enhancers [ATAC-Seq]
GEO Series GSE123700. Heliconius melpomene aglaope; Heliconius melpomene rosina. 8 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Butterfly wing pattern mimicry radiated via parallel evolution of ancient, pleiotropic enhancers
GEO Series GSE123704. Heliconius melpomene aglaope; Heliconius melpomene rosina; Heliconius erato lativitta. 20 samples. Type: Genome binding/occupancy profiling by high throughput sequencing; Other.
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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.