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126 results for “chorusing”
Data from: Overlapping vocalizations produce far-reaching choruses: a test of the signal enhancement hypothesis
Many animals gather in large groups to mate. When these animals produce sexual signals, their signals may overlap. The signal enhancement hypothesis proposes that overlapping signals exhibit enhanced transmission properties, increasing the active space and potency of the signal. We tested this hypothesis using multispeaker playback to simulate a chorus of explosively breeding Neotropical Yellow Toads (Incilius luetkenii). We varied the number of simulated males and the frequency of their vocalizations and we rerecorded the choruses at different distances through this species' native habitat in Costa Rica. Our results support the signal enhancement hypothesis: transmission distance increased with the number of simultaneous calls. Call frequency varies inversely with body size in many animals, including Yellow Toads, and our results reveal that the signal enhancement effect of overlapping calls is heightened when the calls are low in frequency (i.e., a chorus of large-bodied animals) compared to medium or high frequency (i.e., a chorus of smaller-bodied animals). Our findings represent the first experimental demonstration of chorus-level signal enhancement in the vocalizations of vertebrates.
FIGURE 8 in A new North American chorus frog species (Amphibia: Hylidae: Pseudacris) from the south-central United States
FIGURE 8. Phylogeny of the trilling chorus frogs (clade within Pseudacris) based on Lemmon et al. (2007b). Also shown are within- and between-species average pairwise genetic distances (GTR+G+I corrected p-distances) for the 12S/ 16S mitochondrial region, expressed as percentages. Pseudacris maculata and P. clarkii are represented with a single branch because these species are not reciprocally monophyletic.
FIGURE 6 in A new North American chorus frog species (Amphibia: Hylidae: Pseudacris) from the south-central United States
FIGURE 6. Multivariate variation in morphology and advertisement calls within and among Pseudacris feriarum, P. fouquettei, P. m a c u l a t a, and P. nigrita along the first two principal component axes. Representatives of each species are enclosed by polygons. Analyses of morphological data were based on the nine variables in Fig. 7. Analyses of call data were based on the five variables in Fig. 5. Prior to analysis, morphological variables were averaged by population, such that each point on the graph represents a population. In contrast, points on the advertisement call graph represent individuals.
FIGURE 4 in A new North American chorus frog species (Amphibia: Hylidae: Pseudacris) from the south-central United States
FIGURE 4. Advertisement calls of Pseudacris nigrita (first row), P. fouquettei (second row), P. feriarum (third row), and P. maculata (fourth row). Individuals were recorded within ~2°C of each other at 11.6, 12.6, 13.8, and 11.7°C, respectively. Oscillograms (10 sec and 1.5 sec) are shown in columns A and B, spectrograms in column C, and power spectra in column D. Numbered calls in A indicate different individuals calling in sequence. A single call is represented in B–D. Units are as follows: amplitude (volts), time (seconds), and frequency (kilohertz).
FIGURE 1 in A new North American chorus frog species (Amphibia: Hylidae: Pseudacris) from the south-central United States
FIGURE 1. Distributions of Pseudacris feriarum, P. fouquettei, P. maculata, and P. nigrita in the southern United States based on genetic data (Lemmon et al. 2007b). Symbols indicate populations included in genetic analyses. The type locality of P. fouquettei is denoted with a star. Capital "C"s indicate populations analyzed for advertisement calls. Populations analyzed for morphometric data are not shown (see Appendix 1).
FIGURE 3 in A new North American chorus frog species (Amphibia: Hylidae: Pseudacris) from the south-central United States
FIGURE 3. Photographs of Pseudacris feriarum, P. fouquettei, P. maculata, and P. nigrita in life. Specimens are described with localities and museum numbers from left to right: P. nigrita: Calhoun Co., Florida TNHC 63211 and Barnwell Co., South Carolina TNHC 62205; P. fouquettei: Marion Co., Mississippi TNHC 63600 and Craighead Co., Arkansas TNHC 62259; P. feriarum: Calhoun Co., Florida TNHC 63319 and Johnson Co., North Carolina TNHC 63564; P. m a c u l a t a: Fillmore Co., Minnnesota TNHC 63612 and Douglas Co., Kansas TNHC 62378. Photos by EML except TNHC 63612 was photographed by Suzanne L. Collins.
Database of 'Resonant Electron Signatures in the Formation of Chorus Wave Subpackets'
Open the record for dataset details and reuse information.
Database of 'Electron Dynamics in Self-Consistent Wave-Particle Interactions with Oblique Chorus Waves'
<p>Particle data selected at T=2840 and at T=3050.</p>
Dataset of "Nonlinear Wave-Particle Interaction is Suppressed by Realistic Properties of Chorus Waves"
<p>Dataset of "Nonlinear Wave-Particle Interaction is Suppressed by Realistic Properties of Chorus Waves", including waveforms of the input PIC-generated chorus wave field (WF_{PIC}) recorded at certain magnetic latitudes, and the evolution of electrons' equatorial pitch angle with magnetic latitude.</p>
Female choice scores and Peak Frequency and Duration in calls from Wood frog chorus recordings
<p>A limitation in bioacoustic studies has been the inability to differentiate individual sonic contributions from group-level dynamics. We present a novel application of acoustic-camera technology to investigate how individual wood frogs calls influence chorus properties, and how variation influences mating opportunities. We recorded mating calls and used playback trials to gauge preference for different chorus types in the laboratory. Males and females preferred chorus playbacks with low variance in dominant frequency. Females preferred choruses with low mean peak frequency. Field studies revealed more egg masses laid in ponds where males chorused with low variance in dominant frequency. We also noted a trend towards more egg masses laid in ponds where males called with low mean frequency. Nearest neighbor distances influenced call timing (neighbors called in succession) and distances increased with variance in chorus frequency. Results highlight the potential fitness implications of individual-level contributions to a bioacoustic signal produced by groups.</p>
Figures for "The effect of parallel electron plateau on banded chorus generation: 1-D PIC simulations in mirror geometry"
<p>Figures for "The effect of parallel electron plateau on banded chorus generation: 1-D PIC simulations in mirror geometry"</p>
Data for The principal role of chorus ducting for night-side relativistic electron precipitation
<p>Data for Figure 2~4 in paper "The principal role of chorus ducting for night-side relativistic electron precipitation".</p>
FIG. 12 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 12. Oscillograms (first and second columns), spectrograms (third column), and power spectra (fourth column) of advertisement calls from (A) P. collinsorum (recorded at 10.28C) and (B) P. brachyphona (recorded at 12.68C). The second columns represent a single call extracted from those in the first column. In the case of P. collinsorum (A), two males were recorded while duetting and are identified with numbers.
FIG. 11 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 11. Live specimens of P. collinsorum (left, photo by EML) from Lawrence County, Alabama and P. brachyphona (right, photo by Suzanne Collins) from Harrison County, West Virginia. Specimens of P. collinsorum often lack a distinct dorsal coloration pattern. For a color version of this figure, please refer to the online version of this article.
FIG. 7 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 7. Response curves of variables with highest contribution (.10%) to the Northern (black line, dark gray shadow) and Southern (gray line, light gray shadow) clade SDMs. The solid lines represent average probability of occurrence based on ten model replicates, while shadowed areas equal to 6 standard deviation. The dotted line indicates a 50% occurrence probability, with environmental values above this threshold indicating suitable habitat. Each clade shows a peak of habitat suitability (.50% occurrence probability) at different values of each variable, suggesting ecological divergence.
FIG. 10 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 10. Dorsal and lateral views of type specimens of P. collinsorum (A– D) and P. brachyphona (E–H). (A–B) Male P. collinsorum from Hale County, Alabama (UF 190162). (C–D) Male P. collinsorum from Hale County, Alabama (UF 190167). (E–F) Female P. brachyphona from Preston County, West Virginia (NCSM 100109). (G–H) Male P. brachyphona from Preston County, West Virginia (NCSM 100110). Black bars equal to 1 cm. For a color version of this figure, please refer to the online version of this article.
FIG. 9 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 9. Differences in pulse rate (PR), number (PN), and dominant frequency peak (DFP) in acoustic signals recorded in P. brachyphona from Tennessee (TN) and Alabama (AL). Locality-specific distributions of PR, PN, and DFP (A–C). The thick bar in these boxplots represents mean value. Lower and upper edges of each box are 25th and 75th quantile, respectively, and lower and upper whiskers represent the minimum and maximum limits of the interquartile range. Outliers are represented as hollow points. Randomization tests (1,000 reps) were performed for each of these variables (D–E), yielding significant differences for PR and DFP between Tennessee and Alabama, but not for PN.
FIG. 5 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 5. Principal component analysis plot based on residuals from regressions of each morphometric variable against snout–vent length. Abbreviations for the labels on the PC loadings (arrows) are the same as in the text (see Materials and Methods). Convex hulls are shown for each clade.
FIG. 3 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 3. Genetic clustering based on 21,702 SNPs from AHE loci for P. brachyphona. (A) The Structure plot shows two genetic clusters: Northern (n ¼ 17, green) and Southern (n ¼ 16, blue) as observed in the map (B). The pie charts correspond to the proportion of admixture as estimated in Structure. A blue arrow marks the samples from Hale County, Alabama. Two individuals assigned to the Northern cluster showed introgression from P. feriarum (''out,'' gray). (C) The discriminant analysis of principal components (DAPC) required one discriminant function to explain 67.4% of the genetic variance. Lines at the bottom of the distributions represent one individual. The DAPC also shows two clusters in agreement with the Northern and Southern clusters from Structure. The location of the Tennessee River is shown.
FIG. 4 in Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
FIG. 4. Matrix correlation between pairwise genetic (Nei's) and geographic distances among individuals of P. brachyphona, after exclusion of hybrid individuals. (A) Mantel correlation test for all P. brachyphona showed significant correlation (r). The two clusters of points represent comparisons within and between genetic clusters (Northern and Southern). (B) Significant correlations were also observed for each cluster separately (Northern ¼ black, Southern ¼ gray).
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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
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OpenNeuro
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