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2,581 results for “amphibians”
Figure 1 in Year-round activity patterns in a hyperdiverse community of rainforest amphibians in Madagascar
Figure 1. Variation in amphibian diversity and environmental conditions from August 2011 to August 2012 along the study transect in Andasibe, Madagascar. (A) variation in amphibian abundance and species richness throughout 120 surveys; (B) variation in the four less correlated and most meaningful climatic variables during the same period: Temp = daily mean temperature, Humid = daily mean relative humidity, Wind = daily mean wind speed, Rain = daily accumulated rainfall.
Figure 2 in The influence of habitat features on amphibian distribution in Northeastern Greece
Figure 2. Bi-plot of amphibian species with significant environmental and isolation variables at the 250-m scale after a canonical correspondence analysis.
Figure 3 in The influence of habitat features on amphibian distribution in Northeastern Greece
Figure 3. Bi-plot of amphibian species with significant environmental and isolation variables at the 2000-m scale after a canonical correspondence analysis.
Supplementary material 3 from: Neves MO, Cabral H, Pedrozo M, Ferreira VL, Moura M, Santana DJ (2020) Dataset of occurrences and ecological traits of amphibians from Upper Paraguay River Basin, central South America. Nature Conservation 41: 71-89. https://doi.org/10.3897/natureconservation.41.54265
References from the citations contained in Suppl. material 2
Supplementary material 2 from: Neves MO, Cabral H, Pedrozo M, Ferreira VL, Moura M, Santana DJ (2020) Dataset of occurrences and ecological traits of amphibians from Upper Paraguay River Basin, central South America. Nature Conservation 41: 71-89. https://doi.org/10.3897/natureconservation.41.54265
Table S2
Supplementary material 1 from: Neves MO, Cabral H, Pedrozo M, Ferreira VL, Moura M, Santana DJ (2020) Dataset of occurrences and ecological traits of amphibians from Upper Paraguay River Basin, central South America. Nature Conservation 41: 71-89. https://doi.org/10.3897/natureconservation.41.54265
Table S1
FIG. 7 in List of amphibian species (Vertebrata, Tetrapoda) of Burkina Faso
FIG. 7. — Photos of collection vouchers: three anuran species from Burkina Faso preserved in alcohol, dorsal view (left) and ventral view (right). A, Sclerophrys mauritanica (Schlegel, 1841); MNHN-RA-1989.4038; B, Hyperolius lamottei Laurent, 1958; MNHN-RA-1997.9889; C, Ptychadena mascareniensis (Guibé & Lamotte, 1953); MNHN-RA-1996.3916. Photos: A, C, Halamoussa Joëlle Ayoro; B, Annemarie Ohler.
FIG. 5 in List of amphibian species (Vertebrata, Tetrapoda) of Burkina Faso
FIG. 5. — Representatives of anuran species from Burkina Faso in life. A, Kassina fusca Schiøtz, 1967; B-C, Kassina senegalensis (Duméril & Bibron, 1841); D, Phrynomantis microps Peters, 1875; E, Phrynobatrachus francisci Boulenger, 1912; F, Phrynobatrachus latifrons Ahl, 1924. Photos: Halamoussa Joëlle Ayoro.
FIG. 1 in List of amphibian species (Vertebrata, Tetrapoda) of Burkina Faso
FIG. 1. — Map showing the position of Burkina Faso in Africa (inset figure), and the vegetation zones of Burkina Faso with all localities where amphibian specimens were collected. Source: BNDT (2002).
FIG. 4 in List of amphibian species (Vertebrata, Tetrapoda) of Burkina Faso
FIG. 4. — Representatives of anuran species from Burkina Faso in life. A, Hemisus marmoratus (Peters, 1854); B, Afrixalus vittiger (Peters, 1876) C, Afrixalus weidholzi (Mertens, 1938); D, Hyperolius concolor concolor (Hallowell, 1844); E, Hyperolius nitidulus Peters, 1875; F, Kassina cassinoides (Boulenger, 1903). Photos: Halamoussa Joëlle Ayoro.
FIG. 3 in List of amphibian species (Vertebrata, Tetrapoda) of Burkina Faso
FIG. 3. — Representatives of anuran species from Burkina Faso in life. A-B, Arthroleptis poecilonotus Peters, 1863; C, Leptopelis bufonides Schiøtz, 1967; D, Leptopelis viridi (Günther, 1869); E, Sclerophrys maculata (Hallowell, 1854); F, Sclerophrys pentoni (Anderson, 1893). Photos: Halamoussa Joëlle Ayoro.
Figure 4 from: Rojas-Padilla O, Menezes VQ, Dias IR, Argôlo AJS, Solé M, Orrico VGD (2020) Amphibians and reptiles of Parque Nacional da Serra das Lontras: an important center of endemism within the Atlantic Forest in southern Bahia, Brazil. ZooKeys 1002: 159-185. https://doi.org/10.3897/zookeys.1002.53988
Figure 4 Amphibians and reptiles recorded in the Parque Nacional da Serra das Lontras. ADendropsophus branneriBDendropsophus aff. bromeliaceusCD. elegansDD. haddadiEOlolygon strigilataFPhyllodytes sp. 1 GScinax cf. x-signatusHCrossodactylus sp. IAdenomera clade M JCrossodactylodes septentrionalisKLeptodactylus cf. latransLPhasmahyla spectabilisMPhyllomedusa burmeisteriNCorallus hortulanusOChironius fuscusPDipsas catesbyiQDipsas neuwiediRErythrolamprus reginae, SImantodes cenchoaTOxybelis aeneus.
Figure 1 from: Rojas-Padilla O, Menezes VQ, Dias IR, Argôlo AJS, Solé M, Orrico VGD (2020) Amphibians and reptiles of Parque Nacional da Serra das Lontras: an important center of endemism within the Atlantic Forest in southern Bahia, Brazil. ZooKeys 1002: 159-185. https://doi.org/10.3897/zookeys.1002.53988
Figure 1 Location of the Parque Nacional da Serra das Lontras and the evaluated transects. A The Parque Nacional da Serra das Lontras B trails and transects sampled during 2017 and 2018.
Figure 3 from: Rojas-Padilla O, Menezes VQ, Dias IR, Argôlo AJS, Solé M, Orrico VGD (2020) Amphibians and reptiles of Parque Nacional da Serra das Lontras: an important center of endemism within the Atlantic Forest in southern Bahia, Brazil. ZooKeys 1002: 159-185. https://doi.org/10.3897/zookeys.1002.53988
Figure 3 Amphibians recorded in the Parque Nacional da Serra das Lontras: ABrachycephalus pulexBIschnocnema verrucosaCIschnocnema cf. parvaDRhinella cruciferEVitreorana baliommaFV. eurygnathaGVitreorana sp.nov. HV. uranoscopaIHaddadus binotatusJPristimantis sp. 1 KPristimantis sp. 2 LPristimantis paulodutraiMPristimantis vinhaiNAdelophryne sp. 8 OAdelophryne sp. 2 PGastrotheca recavaQAplastodiscus ibirapitangaRA. weygoldtiSBoana faberTBokermannohyla lucianae.
Figure 2 from: Rojas-Padilla O, Menezes VQ, Dias IR, Argôlo AJS, Solé M, Orrico VGD (2020) Amphibians and reptiles of Parque Nacional da Serra das Lontras: an important center of endemism within the Atlantic Forest in southern Bahia, Brazil. ZooKeys 1002: 159-185. https://doi.org/10.3897/zookeys.1002.53988
Figure 2 General and detail view of the change of vegetation in the Parque Nacional da Serra das Lontras. A Panoramic view from "Peito de Moça" (930 m altitude) B view of the "Peito de Moça" C primary vegetation with thin and tall trees with closed canopy below 750–800 m altitude D smaller vegetation with epiphytes and canopy more open in the peaks.
Figure 5 from: Rojas-Padilla O, Menezes VQ, Dias IR, Argôlo AJS, Solé M, Orrico VGD (2020) Amphibians and reptiles of Parque Nacional da Serra das Lontras: an important center of endemism within the Atlantic Forest in southern Bahia, Brazil. ZooKeys 1002: 159-185. https://doi.org/10.3897/zookeys.1002.53988
Figure 5 Reptiles recorded in the Parque Nacional da Serra das Lontras. AOxyrhopus clathratusBO. formosusCO. guibeiDXenopholis scalarisEAnolis fuscoauratusFHemidactylus mabouiaGLeposoma nanodactylusHL. scincoidesIEnyalius catenatusJTropidophis grapiunaKBothrops bilineatusLB. jararaca.
Data from: A global meta-analysis of the ecological impacts of alien species on native amphibians
The exponential increase in species introductions during the Anthropocene has brought about a major loss of biodiversity. Amphibians have suffered large declines, with more than 16% considered to be threatened by invasive species. We conducted a global meta-analysis of the impacts of alien species on native amphibians to determine which aspects of amphibian ecology are most affected by plant, invertebrate, fish, amphibian, reptile or mammal introductions. Measures of fitness were most strongly affected; amphibian performance was consistently lower in the presence of alien species. While exposure to alien species caused a significant decrease in amphibian behavioural activity when compared to a no species control, this response was stronger towards a control of native impacting species. This indicates a high degree of prey naïveté towards alien species and highlights the importance of using different types of controls in empirical studies. Alien invertebrates had the greatest overall impact on amphibians. This study sets a new agenda for research on biological invasions, highlighting the lack of studies investigating impacts of alien species on amphibian terrestrial life-history stages. It also emphasises the strong ecological impacts that alien species have on amphibian fitness and suggests that future introductions or global spread of alien invertebrates could strongly exacerbate current amphibian declines.
Data from: Mechanistic insights into landscape genetic structure of two tropical amphibians using field-derived resistance surfaces
Conversion of forests to agriculture often fragments distributions of forest species and can disrupt gene flow. We examined effects of prevalent land uses on genetic connectivity of two amphibian species in northeastern Costa Rica. We incorporated data from field surveys and experiments to develop resistance surfaces that represent local mechanisms hypothesized to modify dispersal success of amphibians, such as habitat-specific predation and desiccation risk. Because time lags can exist between forest conversion and genetic responses, we evaluated landscape effects using land-cover data from different time periods. Populations of both species were structured at similar spatial scales but exhibited differing responses to landscape features. Litter frog population differentiation was significantly related to landscape resistances estimated from abundance and experiment data. Model support was highest for experiment-derived surfaces that represented responses to microclimate variation. Litter frog genetic variation was best explained by contemporary landscape configuration, indicating rapid population response to land-use change. Poison frog genetic structure was strongly associated with geographic isolation, which explained up to 45% of genetic variation, and long-standing barriers, such as rivers and mountains. However, there was also partial support for abundance and microclimate response derived resistances. Differences in species responses to landscape features may be explained by overriding effects of population size on patterns of differentiation for poison frogs, but not litter frogs. In addition, pastures are likely semi-permeable to poison frog gene flow because the species is known to use pastures when remnant vegetation is present, but litter frogs do not. Ongoing reforestation efforts will likely increase connectivity in the region by increasing tree cover and reducing area of pastures.
Data from: Using multi-response models to investigate pathogen coinfections across scales: insights from emerging diseases of amphibians
1.Associations among parasites affect many aspects of host-parasite dynamics, but a lack of analytical tools has limited investigations of parasite correlations in observational data that are often nested across spatial and biological scales. 2.Here we illustrate how hierarchical, multiresponse modeling can characterize parasite associations by allowing for hierarchical structuring, offering estimates of uncertainty, and incorporating correlational model structures. After introducing the general approach, we apply this framework to investigate coinfections among four amphibian parasites (the trematodes Ribeiroia ondatrae and Echinostoma spp., the chytrid fungus Batrachochytrium dendrobatidis, and ranaviruses) and among >2000 individual hosts, 90 study sites, and five amphibian host species. 3.Ninety-two percent of sites and 80% of hosts supported two or more pathogen species. Our results revealed strong correlations between parasite pairs that varied by scale (from among hosts to among sites) and classification (microparasite versus macroparasite), but were broadly consistent across taxonomically diverse host species. At the host-scale, infection by the trematode R. ondatrae correlated positively with the microparasites, B. dendrobatidis and ranavirus, which were themselves positively associated. However, infection by a second trematode (Echinostoma spp.) correlated negatively with B. dendrobatidis and ranavirus, both at the host- and site-level scales, highlighting the importance of differential relationships between micro- and macroparasites. 4.Given the extensive number of coinfecting symbiont combinations inherent to natural systems, particularly across multiple host species, multiresponse modeling of cross-sectional field data offers a valuable tool to identify a tractable number of hypothesized interactions for experimental testing while accounting for uncertainty and potential sources of co-exposure. For amphibians specifically, the high frequency of co-occurrence and coinfection among these pathogens – each of which is known to impair host fitness or survival – highlights the urgency of understanding parasite associations for conservation and disease management.
Data from: Linking genetic and environmental factors in amphibian disease risk
A central question in evolutionary biology is how interactions between organisms and the environment shape genetic differentiation. The pathogen Batrachochytrium dendrobatidis (Bd) has caused variable population declines in the lowland leopard frog (Lithobates yavapaiensis); thus, disease has potentially shaped, or been shaped by, host genetic diversity. Environmental factors can also influence both amphibian immunity and Bd virulence, confounding our ability to assess the genetic effects on disease dynamics. Here, we used genetics, pathogen dynamics, and environmental data to characterize L. yavapaiensis populations, estimate migration, and determine relative contributions of genetic and environmental factors in predicting Bd dynamics. We found that the two uninfected populations belonged to a single genetic deme, whereas each infected population was genetically unique. We detected an outlier locus that deviated from neutral expectations and was significantly correlated with mortality within populations. Across populations, only environmental variables predicted infection intensity, whereas environment and genetics predicted infection prevalence, and genetic diversity alone predicted mortality. At one locality with geothermally elevated water temperatures, migration estimates revealed source–sink dynamics that have likely prevented local adaptation. We conclude that integrating genetic and environmental variation among populations provides a better understanding of Bd spatial epidemiology, generating more effective conservation management strategies for mitigating amphibian declines.
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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)
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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.