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49 results for “Lithobates”
Laboratory study on microplastic fiber size and concentration effects on leopard frog (Lithobates pipiens) tadpole survival, development, behavior, and parasite susceptibility
This dataset contains comprehensive raw data from a completed laboratory experiment conducted from May 24 to June 30, 2021 (with additional analysis performed in 2025), investigating the effects of polyester microplastic (MP) fiber exposure on northern leopard frog (Lithobates pipiens) tadpoles and their interactions with echinostome trematodes (Echinostoma sp.). Tadpole egg masses were collected from a wetland in Indiana, USA, and ramshorn snails (Helisoma trivolvis), serving as trematode hosts, were collected from Tioga County, New York, USA. The experiment was conducted under controlled laboratory conditions using a static-renewal design, exposing tadpoles to short (~0.24 mm) or long (~1.50 mm) polyester MP fibers at concentrations of 0, 10, or 40 µg L⁻¹ for 32 days, followed by controlled exposure to echinostome cercariae. The dataset includes measurements of tadpole mortality, developmental traits (mass, snout-to-vent length, Gosner stage), behavioral activity (number of moving pre- and post-parasite exposure), MP fiber ingestion, and susceptibility to trematode infection (metacercarial cyst counts in kidneys). These data provide a resource for studying the ecological and toxicological impacts of microplastics on amphibian health, and host-parasite dynamics in freshwater ecosystems, making the dataset suitable for researchers in ecotoxicology, and disease ecology. The dataset is complete, with no ongoing data collection, and is designed to support analyses of microplastic-mediated effects on aquatic organisms.
Leaf litter quality induces morphological changes in wood frog (Lithobates sylvaticus) metamorphs, Oakland University Biological Preserve (MI, USA) 2010.
For organisms that exhibit complex life cycles, resource conditions experienced by individuals before metamorphosis can strongly affect phenotypes later in life. Such resource-induced effects are known to arise from variation in resource quantity, yet little is known regarding effects stemming from variation in resource quality (e.g., chemistry). For larval anurans, we hypothesized that variation in resource quality will induce a gradient of effects on metamorph morphology. We conducted an outdoor mesocosm experiment in which we manipulated resource quality by rearing larval wood frogs (Lithobates sylvaticus) under 11 leaf litter treatments. The litter species represented plant species found in open- and closed-canopy wetlands and included many plant species of current conservation concern (e.g., green ash, common reed). Consistent with our hypothesis, we found a gradient of responses for nearly all mass-adjusted morphological dimensions. Hindlimb dimensions and gut mass were positively associated with litter nutrient content and decomposition rate. In contrast, forelimb length and head width were positively associated with concentrations of phenolic acids and dissolved organic carbon. Limb lengths and widths were positively related with the duration of larval period, and we discuss possible hormonal mechanisms underlying this relationship. There were very few, broad differences in morphological traits of metamorphs between open- and closed-canopy litter species or between litter and no-litter treatments. This suggests that the effects of litter on metamorph morphology are litter species-specific, indicating that the effects of changing plant community structure in and around wetlands will largely depend on plant species composition.
Figure 2 in Diet composition of an invasive population of Lithobates catesbeianus (American Bullfrog) from Argentina
Figure 2. Index of relative importance (IRI) of prey consumed by adult Lithobates catesbeianus; % Number (%N) represents the numerical percentage and % volume (%vol) the volumetric percentage, and the horizontal axis represents the frequency of occurrence of each item.
Figure 3 in Diet composition of an invasive population of Lithobates catesbeianus (American Bullfrog) from Argentina
Figure 3. Index of relative importance (IRI) of prey consumed by juvenile Lithobates catesbeianus; % Number (%N) represents the numerical percentage and % Volume (%Vol) the volumetric percentage, and the horizontal axis represents the frequency of occurrence of each item.
Figure 1 in Diet composition of an invasive population of Lithobates catesbeianus (American Bullfrog) from Argentina
Figure 1. (A) Location of studied invasive population of Lithobates catesbeianus from San Juan (black dot); (B) typical environment where the bullfrogs were captured for this study, around the Castaño Viejo River.
Figure 1 in Enzymatic activity of bone markers on Lithobates catesbeianus (Shaw, 1802) growth during the ossification process
Figure 1. Effect of pH on p NPPase activity of alkaline phosphatase released by PIPLC present in the SPIPLC fraction of tadpole epiphysis and diaphysis and frog epiphysis. T.E.= Tadpole Epiphysis; T.D. = Tadpole Diaphysis; F.E. = Frog Epiphysis.
Fig. 1 in SHORT COMMUNICATION New distributional records of the Amazon River Frog Lithobates palmipes (Spix, 1824) in Peru
Fig. 1. Known distribution of Lithobates palmipes in South America and location of new records in Peru. White circles represent literature data and red circles indicate the new records in San Martin (http://www.inaturalist.org/observations/2384262), Madre de Dios (MUSA-3722, MUSA-3723) and Puno (MHNC-7864) regions.
Figure 2 in Heart rate response and bimodal gas eXchange in three developmental stages of the bullfrog Lithobates catesbeianus (Anura: Ranidae)
Figure 2. Representative data recording of electrocardiogram (A) and aerial ventilation (B) in a premetamorphic Lithobates catesbeianus at 25°C. In B the signals show a ventilatory event where the tadpole renewed the air in its lungs, resulting in a marked drop in PO2 and an increase in PCO2. Following the ventilatory event, the expired air was mixed with the remaining air within the closed respirometry system, resulting in a PO2 slightly lower, and a PCO2 slightly greater, than before ventilation.
Figure 1 in Heart rate response and bimodal gas eXchange in three developmental stages of the bullfrog Lithobates catesbeianus (Anura: Ranidae)
Figure 1. Scheme of non-invasive apparatus to measure gas exchange in water (A) and air (B), and heart rate (C).
Figure 4 in Heart rate response and bimodal gas eXchange in three developmental stages of the bullfrog Lithobates catesbeianus (Anura: Ranidae)
Figure 4. Mass-specific oxygen consumption (A) and carbon dioxide released (B) for aerial (red lines and points) and aquatic (blue lines and points) gas exchange during development of Lithobates catesbeianus.
Figure 5 in Heart rate response and bimodal gas eXchange in three developmental stages of the bullfrog Lithobates catesbeianus (Anura: Ranidae)
Figure 5. Relationship between Log whole-body oxygen consumption (A) and carbon dioxide release (B) (µmol h-1) in 10 air (filled symbols) and water (open symbols), and Log10 body mass (g) in larval (blue triangles), premetamorphic (orange squares) and metamorphic (green circles) stages of Lithobates catesbeianus. Each point represents a measurement from a single animal. The regression lines correspond to aerial (red) and aquatic (blue) gas exchange. Dotted lines represent no significant correlation.
Fig. 2 in Genotypes and zoonotic potential of Enterocytozoon bieneusi in edible bullfrogs (Lithobates catesbeiana) in China
Fig. 2. Phylogenetic tree based on Bayesian inference (BI) analysis of E. bieneusi ITS sequences. Statistically significant posterior probabilities are indicated on the branches. Known and novel E. bieneusi ITS genotypes identified in the present study are indicated by hollow and filled triangles, respectively.
Fig. 3 in Native anuran species as prey of invasive American Bullfrog, Lithobates catesbeianus, in Brazil: a review with new predation records
Fig. 3. Spatial distribution of Lithobates catesbeianus invasive populations and predation reports of native anurans in Brazil. White circles: American Bullfrog populations in Brazil (Both et al. 2011; Instituto Horus 2016); yellow stars: predation reports of adult Boana raniceps and adult Phyllomedusa distincta in southern and southeastern Brazil; light green circles: locations of 41 published predation records.
Fig. 2 in Native anuran species as prey of invasive American Bullfrog, Lithobates catesbeianus, in Brazil: a review with new predation records
Fig. 2. (A) Predation of an adult Phyllomedusa distincta by Lithobates catesbeianus, (B) Adult P. distincta partially digested, removed from the oral cavity of L. catesbeianus.
Fig. 1 in Native anuran species as prey of invasive American Bullfrog, Lithobates catesbeianus, in Brazil: a review with new predation records
Fig. 1. Adult Lithobates catesbeianus swallowing an adult Boana raniceps in an artificial permanent pond within pasture area in southern Brazil.
Linked collectors and determiners for: Propuesta de diagnóstico, erradicación y monitoreo post-erradicación, de especies exóticas invasoras en oasis de Baja California Sur, centrándose en las dos más relevantes: rana toro Lithobates catesbeianus y manto de cristo Cryptostegia grandiflora.
Natural history specimen data linked to collectors and determiners held within, "Propuesta de diagnóstico, erradicación y monitoreo post-erradicación, de especies exóticas invasoras en oasis de Baja California Sur, centrándose en las dos más relevantes: rana toro Lithobates catesbeianus y manto de cristo Cryptostegia grandiflora". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/2da4d785-ad98-40bd-9cd9-2285c19285e9">https://bionomia.net/dataset/2da4d785-ad98-40bd-9cd9-2285c19285e9</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/2da4d785-ad98-40bd-9cd9-2285c19285e9">https://gbif.org/dataset/2da4d785-ad98-40bd-9cd9-2285c19285e9</a>. Formatted as a Frictionless Data package.
Data from: Characterizing population structure and documenting rapid loss of genetic diversity in Chiricahua Leopard Frogs (Lithobates chiricahuensis) with high throughput microsatellite genotyping
Open the record for dataset details and reuse information.
FIGURE 2 in A new species of Foleyellides (Nematoda: Onchocercidae) parasite of Lithobates spp. (Amphibia: Ranidae) from Mexico with a key for the species of the genus
FIGURE 2. Scanning electron microphotography (SEM) A. Foleyellides mayenae n. sp. Cephalic plate, showing four pairs of papillae and parastomal structures. B. Caudal region of female, showing lateral alae.,C, D. Caudal region of male, showing five pairs of caudal papillae, and lateral alae. p= papillae, am=amphids, ps= parastomal structures, al= alae, es= spicules, co= cuticular ornamentation.
FIGURE 1. Foleyellides mayenae n in A new species of Foleyellides (Nematoda: Onchocercidae) parasite of Lithobates spp. (Amphibia: Ranidae) from Mexico with a key for the species of the genus
FIGURE 1. Foleyellides mayenae n. sp. from Zapopan, Jalisco, Mexico. A. Female anterior end, lateral view. B. Caudal region of female, C. Caudal region of male.
Historical connections between Atlantic Forest and Amazonia drove genetic and ecological diversity in Lithobates palmipes (Anura, Ranidae)
<p>The Atlantic and Amazon rainforests have a shared but unclear past, with intermittent connections resulting from historical climate change. We investigate these connections by studying the phylogeography and climatic niche of the disjunct distributed frog<em> Lithobates palmipes</em>. We sequenced two fragments of mitochondrial DNA from Atlantic Forest (AtF) and Amazonia (AmF) individuals and evaluated how genetic diversity is distributed in space and whether past demographic changes occurred. Also, we evaluated the existence of past suitable connections between biomes for<em> L. palmipes</em> through ecological niche models (ENM) and tested for niche divergence. The AtF group is nested within the AmF group and closely related to individuals from eastern Amazonia, a pattern recovered in many species that used northeast connection routes. We found evidence of recurrent use of connections in different directions and time during the Pleistocene, resulting in genetic structure between biomes, with no signal of demographic change and evidence of niche divergence across both genetic groups. ENMs indicated suitable areas connecting forests throughout northeastern Brazil during the Pleistocene. Mitochondrial lineages do not match biomes exactly. One lineage is composed of AtF populations and eastern Amazonia individuals. The other is composed of western Amazonia individuals, suggesting an effect of past climatic heterogeneity within the Amazonia forest. This is the first evidence that this route drove genetic and ecological diversity for amphibians recently, a group with habits and ecological requirements different from other vertebrates that have been shown to use this putative corridor.</p>
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