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322 results for “poison frogs”
Data and code for: Male-male contest limits the expression of assortative mate preferences in a polymorphic poison frog
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Conspecific cues elect distinct behavioural responses in cannibalistic poison frog tadpoles dataset
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Data from: Mimetic divergence and the speciation continuum in the mimic poison frog Ranitomeya imitator
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Data from: Male-male aggression is unlikely to stabilize a poison frog polymorphism
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Data from: Diversification and convergence of aposematic phenotypes: truncated receptors and cellular arrangements mediate rapid evolution of coloration in harlequin poison frogs
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Invertebrate photographs and taxonomic information from: Nuance in the narrative of a brown poison frog: Environmental alkaloids and specialized foraging in a presumed toxin-free and diet-generalized species
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Molecular physiology of pumiliotoxin sequestration in a poison frog
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Data from: Hybridization promotes color polymorphism in the aposematic harlequin poison frog, Oophaga histrionica
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Data from: Reproductive isolation related to mimetic divergence in the poison frog Ranitomeya imitator
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UV reflectance in poison frog
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Data from: Induced parental care in a poison frog: a tadpole cross-fostering experiment
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Data from: Poison frog colors are honest signals of toxicity, particularly for bird predators
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Data from: Mating status correlates with dorsal brightness in some but not all poison frog populations
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Mechanisms for color convergence in a mimetic radiation of poison frogs
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Aposematic patterns shift continuously through the life of poison frogs
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Spatial problem solving in a poison frog
<p>This video is linked with the paper "Spatial problem solving in a poison frog" by J. Yeager and CL Barrio-Amoros in Herpetology Notes</p>
Links between prey assemblages and poison frog toxins: a landscape ecology approach to assess how biotic interactions affect species phenotypes
<p>Ecological studies of species pairs showed that biotic interactions promote phenotypic change and eco-evolutionary feedbacks. However, it is unclear how phenotypes respond to synergistic interactions with multiple taxa. We investigate whether interactions with multiple prey species explain spatially structured variation in the skin toxins of the Neotropical poison frog <i>Oophaga pumilio</i>. Specifically, we assess how dissimilarity (i.e., beta diversity) of alkaloid-bearing arthropod prey assemblages (68 ant species) and evolutionary divergence between frog populations (from a neutral genetic marker) contribute to frog poison dissimilarity (toxin profiles composed of 230 different lipophilic alkaloids sampled from 934 frogs at 46 sites). We find that models that incorporate spatial turnover in the composition of ant assemblages explain part of the frog alkaloid variation, and we infer unique alkaloid combinations across the range of <i>O. pumilio</i>. Moreover, we find that alkaloid variation increases weakly with the evolutionary divergence between frog populations. The analytical framework proposed here can be extended to other multi-trophic systems, coevolutionary mosaics, microbial assemblages, and ecosystem services.</p>
Data from: Coarse dark patterning functionally constrains adaptive shifts from aposematism to crypsis in strawberry poison frogs
Ecological specialization often requires tight co-evolution of several traits, which may constrain future evolutionary pathways and make species more prone to extinction. Aposematism and crypsis represent two specialized adaptations to avoid predation. We tested whether the combined effects of color and pattern on prey conspicuousness functionally constrain or facilitate shifts between these two adaptations. We combined data from 17 natural populations of Strawberry poison frogs, Oophaga pumilio with an experimental approach using digitalized images of frogs and chickens as predators. We show that bright coloration often co-occurs with coarse patterning among the natural populations. Dull green frogs with coarse patterning are rare in nature but in the experiment they were as easily detected as bright red frogs suggesting that this trait combination represent a transient evolutionary state towards aposematism. Hence, a gain of either bright color or coarse patterning leads to conspicuousness but a transition back to crypsis would be functionally constrained in populations with both bright color and coarse patterning by requiring simultaneous changes in two traits. Thus, populations (or species) signaling aposematism by conspicuous color should be less likely to face an evolutionary dead-end and more likely to radiate than populations with both conspicuous color and coarse patterning.
Land use impacts poison frog chemical defenses through changes in leaf litter ant communities
<p>Much of the world's biodiversity is held within tropical rainforests, which are increasingly fragmented by agricultural practices. In these threatened landscapes, there are many organisms that acquire chemical defenses from their diet and are therefore intimately connected with their local food webs. Poison frogs (Family Dendrobatidae) are one such example, as they acquire alkaloid-based chemical defenses from their diet of leaf litter ants and mites. It is currently unknown how habitat fragmentation impacts chemical defense across trophic levels, from arthropods to frogs. We examined the chemical defenses and diets of the Diablito poison frog (Oophaga sylvatica), and the diversity of their leaf litter ant communities in secondary forest and reclaimed cattle pasture. Notably, this research was performed in collaboration with two high school science classrooms. We found that the leaf litter of forest and pasture frog habitats differed significantly in ant community structure. We also found that forest and pasture frogs differed significantly in diet and alkaloid profiles, where forest frogs contained more of specific alkaloids and ate more ants in both number and volume. Finally, ant species composition of frog diets resembled the surrounding leaf litter, but diets were less variable. This suggests that frogs tend to consume particular ant species within each habitat. To better understand how ants contribute to the alkaloid chemical profiles of frogs, we chemically profiled several ant species and found some alkaloids to be common across many ant species while others are restricted to a few species. Our experiments are the first to link anthropogenic land use changes to dendrobatid poison frog chemical defenses through variation in leaf litter communities, which has implications for conservation management of these threatened amphibians.</p>
FIGURE 4 in A new species of poison frog (Amphibia: Dendrobatidae) from the Andean mountains of Tolima, Colombia
FIGURE 4. Ventral view of hand and foot of Ranitomeya tolimense (CZUT-A 989). Scale = 1mm.
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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.