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8 results for “secondary defence”
Data from: Too hard to swallow: a secret secondary defence of an aposematic insect
Anti-predator strategies are significant components of adaptation in prey species. Aposematic prey are expected to possess effective defences that have evolved simultaneously with their warning colours. This study tested the hypothesis of the defensive function and ecological significance of the hard body in aposematic Pachyrhynchus weevils pioneered by Alfred Russel Wallace nearly 150 years ago. We used predation trials with Japalura tree lizards to assess the survivorship of 'hard' (mature) vs. 'soft' (teneral) and 'clawed' (intact) vs. 'clawless' (surgically removed) weevils. The ecological significance of the weevil's hard body was evaluated by assessing the hardness of the weevils, the local prey insects, and the bite forces of the lizard populations. The existence of toxins or deterrents in the weevil was examined by gas chromatography-mass spectrometry (GC-MS). All 'hard' weevils were instantly spat out after being bitten once and survived attacks by the lizards. In contrast, the 'soft' weevils were chewed and subsequently swallowed. The results were the same regardless of the presence or absence of the weevil's tarsal claws. The hardness of 'hard' Pachyrhynchus weevils was significantly higher than the average hardness of other prey insects in the same habitat and the mean bite forces of the local lizards. The four candidate compounds of the weevil identified by GC-MS had no known toxic or repellent functions against vertebrates. These results reveal that the hardness of aposematic prey functions as an effective secondary defence, and they provide a framework for understanding the spatio-temporal interactions between vertebrate predators and aposematic insect prey.
Data from: Too hard to swallow: a secret secondary defence of an aposematic insect
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Data from: Bolstered physical defences under nutrient-enriched conditions may facilitate a secondary foundational algal species in the South Pacific
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Populus tremula (European aspen) shows no evidence of sexual dimorphism in gene expression, phenotype, secondary defence or herbivory
GEO Series GSE46219. Populus tremula; Populus trichocarpa. 20 samples. Type: Expression profiling by array.
Asymmetric bulges within hairpin RNA transgenes influence small RNA size, secondary siRNA production and viral defence [RNA-Seq]
GEO Series GSE252890. Nicotiana tabacum. 9 samples. Type: Expression profiling by high throughput sequencing.
Asymmetric bulges within hairpin RNA transgenes influence small RNA size, secondary siRNA production and viral defence
GEO Series GSE243297. Nicotiana tabacum; Arabidopsis thaliana. 48 samples. Type: Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing.
Asymmetric bulges within hairpin RNA transgenes influence small RNA size, secondary siRNA production and viral defence II
GEO Series GSE243296. Arabidopsis thaliana. 20 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Asymmetric bulges within hairpin RNA transgenes influence small RNA size, secondary siRNA production and viral defence I
GEO Series GSE243255. Nicotiana tabacum. 19 samples. Type: Expression profiling by high throughput sequencing.
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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.