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2,581 results for “amphibians”
Data from ONSET OF EARLY SPRING ACTIVITY BY AMPHIBIANS IN ITHACA, NEW YORK, USA
<p>This dataset was generated by conducting a search of all verifiable, research grade observations with photographs of amphibians (Category = Amphibia) in Ithaca, New York for the period 1 February to 30 April for the years 2016–2024. We constrained the search to an area within a 5 km radius of Cornell University, Ithaca, New York, USA (42.45° N, 76.48° W). The data output was modified to remove observer names as well as datafields that were extraneous to the analysis.</p>
Male reproductive effort might be evolving in the face of devastating disease in a threatened amphibian
The devastating infectious disease chytridiomycosis has caused declines of amphibians across the globe, yet some populations are persisting and even recovering. One understudied effect of wildlife disease is changes in reproductive effort. Here we aimed to understand if disease has plastic effects on reproduction and if reproductive effort could evolve with disease endemism. We compared the effects of experimental pathogen exposure (trait plasticity) and population-level disease history (evolution in trait baseline) on reproductive effort using gametogenesis as a proxy in the declining and endangered frog Litoria verreauxii alpina. We found that unexposed males from disease-endemic populations had higher reproductive effort, which is consistent with an evolutionary response to chytridiomycosis. We also found evidence of trait plasticity, where males and females were affected differently by infection: pathogen exposed males had higher reproductive effort (larger testes), whereas females had reduced reproductive effort (smaller and fewer developed eggs) regardless of the population of origin. Infectious disease can cause plastic changes in reproductive effort at an individual level, and population-level disease exposure can result in changes to baseline reproductive effort; therefore, individual- and population-level effects of disease should be considered when designing management and conservation programs for threatened and declining species. --
Fig. 8 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 8. Rana cf. miletti from Camp 1.
Fig. 7 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 7. Kalophrynus interlineatus from Che Teal Chrum.
Fig. 4. Camp 1 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 4. Camp 1 on the eastern flanks of Phnom Samkos, Pursat Province, Cambodia.
Fig. 20. Pareas margaritophorus from Camp 1 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 20. Pareas margaritophorus from Camp 1.
Fig. 12. Cnemaspis chanthaburiensis from Camp 1 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 12. Cnemaspis chanthaburiensis from Camp 1.
Fig. 2 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 2. Disturbed habitat in the town of Pramaoy, Pursat Province, Cambodia.
Fig. 15 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 15. Leiolepis belliana from Che Teal Chrum.
Fig. 18 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 18. Enhydris plumbea from Che Teal Chrum.
Fig. 10 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 10. Chiromantis nongkhoriensis from Pramaoy.
Fig. 17. Boiga cyanea from Camp 1 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 17. Boiga cyanea from Camp 1.
Fig. 14 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 14. Takydromus sexlineatus from Che Teal Chrum.
Fig. 13 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 13. Hemiphyllodactylus cf. yunnanensis from Phnom Tumpor. Photograph by JH.
Fig. 1 in Additional Amphibians And Reptiles From The Phnom Samkos Wildlife Sanctuary In Northwestern Cardamom Mountains, Cambodia, With Comments On Their Taxonomy And The Discovery Of Three New Species
Fig. 1. Location of Phnom Samkos within the Cardamom Mountains, Cambodia.
Effects of released farmed mallards on species richness of breeding waterbirds and amphibians in natural, restored, and constructed wetlands
<p>Common practices in current game management are wetland restoration and creation, as well as releases of quarry species. We studied the impact of releases of mallard ducklings on species richness of wild waterbirds and amphibians on three types of wetlands: natural, constructed and restored. Data on species richness, macrophyte cover and water characteristics (total phosphorous and pH) were collected at 32 sites in an agricultural landscape in southern Sweden. In total, 14 species of waterbirds were recorded, ranging from zero to seven per wetland and survey. Amphibians were present in 24 of the 32 wetlands; in total five species were found, ranging from zero to three per wetland. By using generalized linear modelling we found that wetland type best predicted waterbird species richness. Constructed wetlands had significantly more waterbird species, regardless of whether they were used for mallard releases or not. There were breeding amphibians in 62% of natural, 100% of restored and 77% of constructed wetlands. Breeding amphibians were present in 84% of wetlands without, and in 62% of wetlands with releases. However, included variables did not explain amphibian species richness in the wetlands. Releasing large numbers of mallards on a wetland and providing food ad libitum is likely to affect water quality, nutrient availability and predation pressure. Indeed, phosphorous levels were significantly higher in release wetlands, but no differences were found between wetland types.This means that mallard releases may increase nutrient loads in environments that are already eutrophied. However, in our study system releases did not influence species richness of waterbirds and amphibians locally. Constructing wetlands for mallard releases can thus have positive local effects on species richness.</p>
Text-fig. 1. Schematic map of the localities. in Plio-Pleistocene Amphibians And Reptiles From Central Turkey: New Faunas And Faunal Records With Comments On Their Biochronological Position Based On Small Mammals
Text-fig. 1. Schematic map of the localities.
Figure 10 in Annotated checklist of the amphibians and reptiles of the Santander highland, Colombia
Figure 10. Erythrolamprus epinephelus and its preferred microhabitat. Scale bar (on left) = 14 mm.
Figure 7 in Annotated checklist of the amphibians and reptiles of the Santander highland, Colombia
Figure 7. Color variation of Anolis nicefori. Scale bar (on right) = 20 mm.
Figure 6 in Annotated checklist of the amphibians and reptiles of the Santander highland, Colombia
Figure 6. Bolitoglossa adspersa. Scale bar (on left) = 13 mm.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.