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10 results for “Cuban treefrog”
Fig. 2 in Acquired and introduced macroparasites of the invasive Cuban treefrog, Osteopilus septentrionalis
Fig. 2. Prevalence, richness, and evenness (Simpson's Diversity Index) of parasites in male, female, and juvenile Cuban treefrogs, Osteopilus septentrionalis, collected from Tampa, FL.
Fig. 1 in Acquired and introduced macroparasites of the invasive Cuban treefrog, Osteopilus septentrionalis
Fig. 1. Mean (±SE) abundance (log transformed) and mean intensity (log transformed) of parasites in male, female, and juvenile Cuban treefrogs, Osteopilus septentrionalis, collected from Tampa, FL.
Data from: Metabolites from the fungal pathogen Batrachochytrium dendrobatidis (Bd) reduce Bd load in Cuban treefrog tadpoles
<p><em>Batrachochytrium dendrobatidis</em> (Bd) has been associated with massive amphibian population declines worldwide. Wildlife vaccination campaigns have proven effective for mitigating damage from other pathogens, and there is evidence that adult frogs can acquire resistance to Bd when exposed to killed Bd zoospores and the metabolites they produced.</p> <p>Here, we investigated whether Cuban treefrogs tadpoles (<em>Osteopilus septentrionalis</em>) can gain protection from Bd through exposure to a prophylaxis treatment composed of killed zoospores or soluble Bd metabolites. We used a 2x2 factorial design, crossing the presence or absence of killed zoospores with the presence or absence of Bd metabolites. All hosts were subsequently exposed to live Bd to evaluate susceptibility.</p> <p>Exposure to killed zoospores did not induce a protective response. However, tadpoles exposed to Bd metabolites had significantly lower Bd intensity and prevalence than tadpoles that were not exposed to metabolites.</p> <p>The metabolites Bd produce pose no risk of Bd infection and therefore make an epidemiologically safe prophylaxis treatment, protecting tadpoles against Bd. This work provides a promising potential for protecting amphibians in the wild as a disease management strategy for controlling Bd associated declines.</p>
Data from: Metabolites from the fungal pathogen Batrachochytrium dendrobatidis (Bd) reduce Bd load in Cuban treefrog tadpoles
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Figure 4 in Will future anthropogenic climate change increase the potential distribution of the alien invasive Cuban treefrog (Anura: Hylidae)?
Figure 4. Maps of the potential distribution of O. septentrionalis as expected for 2020, 2050 and 2080 assuming A2a and B2a conditions. Maps show mean values of Maxent values derived from models projected onto CCCMA, CISRO and HADCM3 scenarios.
Figure 3 in Will future anthropogenic climate change increase the potential distribution of the alien invasive Cuban treefrog (Anura: Hylidae)?
Figure 3. Comparison between the known distribution of O. septentrionalis (A) (source: Johnson (2007)) and model prediction in Florida (B). Spread history of O. septentrionalis is indicated.
Figure 2 in Will future anthropogenic climate change increase the potential distribution of the alien invasive Cuban treefrog (Anura: Hylidae)?
Figure 2. Potential distribution of O. septentrionalis under current climate conditions within the Caribbean. Higher Maxent values suggest higher climatic suitability. Native records are indicated as points and invasive records as triangles.
Figure 1 in Will future anthropogenic climate change increase the potential distribution of the alien invasive Cuban treefrog (Anura: Hylidae)?
Figure 1. Comparison of climatic conditions at native and invasive records of Osteopilus septentrionalis. Native records used for model building are indicated in black, invasive records in grey.
Widespread Ranavirus and Perkinsea infections in Cuban Treefrogs (Osteopilus septentrionalis) invading New Orleans, USA
<p>Invasive species can negatively impact ecosystems in numerous ways, including vectoring pathogenic organisms. In amphibians, a lineage globally threatened by multiple pathogens, this spread of disease via invasive species could contribute to declines in native populations. The Cuban Treefrog (<i>Osteopilus septentrionalis</i>) is invasive in the southeastern USA. To assess whether <i>O. septentrionalis</i> is a potential reservoir host for the pathogens <i>Batrachochytrium dendrobatidis</i> (Bd), Ranavirus (Rv), and Perkinsea (Pr), we sampled 82 individuals from a recently invaded site in New Orleans, Louisiana, USA. We used quantitative PCR to assess prevalence and intensity of Bd,<i> </i>Rv and Pr in mouthparts and tail clips from 22 larvae and in toe clips from 60 metamorphosed frogs. We compared infection prevalence and intensity across host characteristics, including Fulton's body condition (K), sex, and life stage. None of the individuals were infected with Bd, 72% were infected with Rv, and 44% were infected with Pr. Twenty-three individuals (28%) were co-infected with Rv and Pr, but co-infection did not significantly predict the prevalence or intensity of either Rv or Pr. Although we did not observe any disease signs, Pr infections were significantly associated with lower body condition, suggesting sub-lethal fitness costs. Our study establishes that invasive <i>O. septentrionalis</i> in New Orleans are infected with two pathogens of global concern for amphibians. Understanding host-pathogen dynamics in <i>O. septentrionalis</i> in Louisiana is a critical step towards understanding how this invasive species could threaten amphibian biodiversity in the region by transmitting infectious pathogens.</p>
Widespread Ranavirus and Perkinsea infections in Cuban Treefrogs (Osteopilus septentrionalis) invading New Orleans, USA
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