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FIGURE 2 in Advertisement call and diel pattern of Pseudis platensis (Anura, Hylidae, Pseudinae) in the Brazilian Pantanal and a bioacoustical comparison with Pseudis paradoxa
FIGURE 2. Diel pattern of calling activity of Pseudis platensis in the Pantanal Matogrossense National Park (Poconé municipality, Mato Grosso, Brazil). Calling activity was measured by acoustic monitoring from 20 January to 2 February 2014 at one site. The diel pattern is expressed as a mean percentage of calls detected at each recording time. Hours are expressed in winter local time (GMT -4). Photo: Mauro Teixeira Jr. © (Cáceres, Mato Grosso, Brazil).
FIGURE 1 in Advertisement call and diel pattern of Pseudis platensis (Anura, Hylidae, Pseudinae) in the Brazilian Pantanal and a bioacoustical comparison with Pseudis paradoxa
FIGURE 1. Oscillogram (Amplitude, ku) and audiospectrogram (Frequency range, kHz) of the advertisement call of Pseudis platensis recorded on 27 January 2013 in the Pantanal Matogrossense National Park, municipality of Poconé, state of Mato Grosso, Brazil. The call was recorded using a Song Meter SM2 recorder at 7:15 p.m., and the mean air temperature was 20ºC. The figure was created using Raven Pro 1.5 with the following configuration: Hamming window function; 64% brightness; 74% contrast; 256 point DFT size; 50% time grid overlap; and Jet Black color scheme.
FIGURE 3. 3-D in Advertisement call and diel pattern of Pseudis platensis (Anura, Hylidae, Pseudinae) in the Brazilian Pantanal and a bioacoustical comparison with Pseudis paradoxa
FIGURE 3. 3-D graph showing the distribution of Pseudis platensis (black circles) and Pseudis paradoxa (empty circles) advertisement calls according to three acoustical parameters. The rectangle highlights the position of the advertisement call described in the present work.
FIGURE 1 in Tachiramantis lassoalcalai (Barrio-Amorós, Rojas-Runjaic & Barros, 2010) (Anura, Craugastoridae): a new combination revealed by molecular evidence, with a description of its advertisement call
FIGURE 1. Species currently known in the Andean frog genus Tachiramantis. a. T. douglasi; b. T. lassoalcalai comb. nov.; c. T. lentiginosus; d. T. prolixodiscus. Photos: F.J.M. Rojas-Runjaic (a, c–d); P. Velozo (b).
FIGURE 3 in Tachiramantis lassoalcalai (Barrio-Amorós, Rojas-Runjaic & Barros, 2010) (Anura, Craugastoridae): a new combination revealed by molecular evidence, with a description of its advertisement call
FIGURE 3. Advertisement call of Tachiramantis lassoalcalai comb. nov. Oscillogram (a) and spectrogram (b) of a 5 s fragment of a call group. Detailed view of the oscillogram (c) and spectrogram (d) of a 0.5 s long section of the same recording depicting a single call (= note).
Allometric escape from acoustic constraints in frog calls is rare
<p class="AbstractSummary">Allometric constraint is a product of natural selection, particularly with respect to body size and traits constrained by physical properties thereof, such as metabolism, longevity, and vocal frequency. Parameters describing allometric relationships are conserved across most lineages, indicating that physical constraints dictate scaling patterns in deep time, despite substantial genetic and ecological divergence among organisms. Acoustic allometry (sound frequency ~ body size) is conserved across frogs, in defiance of massive variation in both body size and frequency. Here, we find four major instances of allometric escape, potentially deriving from ecomorphological adaptations to new signal modalities and invasion of biogeographic regions. In these instances of allometric escape, the optima and strength of the scaling relationship are different than expected for most other frog species, representing new adaptive regimes of body size ~ call frequency. Allometric constraints in frogs are highly conserved and have rarely promoted allometric escape despite frequent invasions of new adaptive regimes and dramatic ecomorphological divergence. Our results highlight instances in which natural and sexual selection combined could overcome physical constraints on sound production.</p>
Frozen verses: Antarctic minke whales (Balaenoptera bonaerensis) call predominantly during austral winter --data_minke
<p>The recent identification of the bio-duck call as Antarctic minke whale (AMW) vocalization allows the use of passive acoustic monitoring to retrospectively investigate year-round spatial- temporal patterns in minke whale occurrence in ice-covered areas. Here, we present an analysis of AMW occurrence patterns based on a 9-year passive acoustic dataset (2008– 2016) from 21 locations throughout the Atlantic sector of the Southern Ocean (Weddell Sea). AMWs were detected acoustically at all mooring locations from May to December, with the highest presence between August and November (bio-duck calls present at more than 80% of days). At the southernmost recording locations, the bio-duck call was present up to 10 months of the year. Substantial inter-annual variation in the seasonality of vocal activity correlated to variation in local ice concentration. Our analysis indicates that part of the AMW population stays in the Weddell Sea during austral winter. The period with the highest acoustic presence in the Weddell Sea (September–October) coincides with the timing of the breeding season of AMW in lower latitudes. The bio-duck call could therefore play a role in mating, although other behavioural functions of the call cannot be excluded to date.</p>
Data from: Drivers of assemblage-wide calling activity in tropical anurans and the role of temporal resolution
<p>1. Temporal scale in animal communities is often associated with seasonality, despite the large variation in species activity during a diel cycle. A gap thus remains in understanding the dynamics of short-term activity in animal communities.</p> <p>2. Here we assessed calling activity of tropical anurans and addressed how species composition varied during night activity in assemblages along gradients of local and landscape environmental heterogeneity.</p> <p>3. We investigated 39 anuran assemblages in the Pantanal wetlands (Brazil) with passive acoustic monitoring during the peak of one breeding season and first determined changes in species composition between night periods (early, mid, and late) using two temporal resolutions (1-hour and 3-hour intervals). Then, we addressed the role of habitat structure (local and landscape heterogeneity variables from field-based and remote sensing metrics) and ecological context (species richness and phylogenetic relatedness) in determining changes in species composition (i) between night periods and (ii) across days.</p> <p>4. Nocturnal calling activity of anuran assemblages varied more within the 1-hour resolution than the 3-hour resolution. Differences in species composition between early and late-night periods were related to local habitat structure and phylogenetic relatedness, while a low variation in compositional changes across days was associated with low-heterogeneous landscapes. None of these relationships were observed using the coarser temporal resolution (3-hour).</p> <p>5. Our findings on the variation of calling activity in tropical anuran assemblages suggest potential trades-off mediated by fine-temporal partitioning. Local and landscape heterogeneity may provide conditions for spatial partitioning, while the relatedness among co-signaling species provides cues on the ecological overlap of species with similar requirements. These relationships suggest a role of niche dimensional complementarity on the structuring of these anuran assemblages over fine temporal scales. We argue that fine-temporal differences between species in breeding activity can influence the outcome of species interaction and that addressing temporal scaling issues can improve our understanding of dynamics of animal communities.</p>
Hearing sensitivity and amplitude coding in bats are differentially shaped by echolocation calls and social calls
Differences in auditory perception between species are influenced by phylogenetic origin and the perceptual challenges imposed by the natural environment, e.g. detecting prey- or predator-generated sounds and communication signals. Bats are well suited for comparative studies on auditory perception since they predominantly rely on echolocation to perceive the world, while their social calls and most environmental sounds have low frequencies. We tested if hearing sensitivity and stimulus level coding in bats differ between high and low frequency ranges by measuring auditory brainstem responses (ABRs) of 86 bats belonging to 11 species. In most species, auditory sensitivity was equally good at both high and low frequency ranges, while amplitude was more finely coded for higher frequency ranges. Additionally, we conducted a phylogenetic comparative analysis by combining our ABR data with published data on 27 species. Species-specific peaks in hearing sensitivity correlated with peak frequencies of echolocation calls and pup isolation calls, suggesting that changes in hearing sensitivity evolved in response to frequency changes of echolocation and social calls. Overall, our study provides the most comprehensive comparative assessment of bat hearing capacities to date and highlights the evolutionary pressures acting on their sensory perception.
FIGURE 4 in Advertisement call of two threatened red-bellied-toads Melanophryniscus cambaraensis and M. macrogranulosus (Anura: Bufonidae), from the Atlantic Rainforest, southern Brazil
FIGURE 4. Comparison between populations of parameters selected by PCA (box plot: mean, SD and range).
FIGURE 1 in Advertisement call of two threatened red-bellied-toads Melanophryniscus cambaraensis and M. macrogranulosus (Anura: Bufonidae), from the Atlantic Rainforest, southern Brazil
FIGURE 1. Data collection of Melanophryniscus cambaraensis, in FLONA SFP (1) and M. macrogranulosus, in Garapiá (2) and Morro da Gruta (3) in Rio Grande do Sul, south Brazil.
FIGURE 3 in Advertisement call of two threatened red-bellied-toads Melanophryniscus cambaraensis and M. macrogranulosus (Anura: Bufonidae), from the Atlantic Rainforest, southern Brazil
FIGURE 3. Oscillogram and spectrogram of Melanophryniscus cambaraensis call from FLONA SFP (A - FZ 9093) and a close view of the call (B); and a close view of the call of M. macrogranulosus from Garapiá (C – FZ9102) and from Morro da Gruta (D – FZ 9113). In each figure we show call part A (single pulses) and B (pulsed trill) of the call.
Supplementary material 1 from: ter Hofstede HM, Symes LB, Martinson SJ, Robillard T, Faure P, Madhusudhana S, Page RA (2020) Calling songs of Neotropical katydids (Orthoptera: Tettigoniidae) from Panama. Journal of Orthoptera Research 29(2): 137-201. https://doi.org/10.3897/jor.29.46371
Supplementary material 1 from: ter Hofstede HM, Symes LB, Martinson SJ, Robillard T, Faure P, Madhusudhana S, Page RA (2020) Calling songs of Neotropical katydids (Orthoptera: Tettigoniidae) from Panama. Journal of Orthoptera Research 29(2): 137-201. https://doi.org/10.3897/jor.29.46371
Supplementary material 2 from: ter Hofstede HM, Symes LB, Martinson SJ, Robillard T, Faure P, Madhusudhana S, Page RA (2020) Calling songs of Neotropical katydids (Orthoptera: Tettigoniidae) from Panama. Journal of Orthoptera Research 29(2): 137-201. https://doi.org/10.3897/jor.29.46371
Supplementary material 2 from: ter Hofstede HM, Symes LB, Martinson SJ, Robillard T, Faure P, Madhusudhana S, Page RA (2020) Calling songs of Neotropical katydids (Orthoptera: Tettigoniidae) from Panama. Journal of Orthoptera Research 29(2): 137-201. https://doi.org/10.3897/jor.29.46371
FIGURE 1 in The advertisement call of Gastrotheca chrysosticta Laurent, 1976 (Anura: Hemiphractidae)
FIGURE 1. Audiospectrogram (upper left), oscillogram (lower left), and power spectrum (upper right) of the advertisement call of Gastrotheca chrysosticta from Baritú National Park, Salta Province, Argentina (Air temperature = 10 °C; snout-vent length = 34 mm; LGE-B 0363).
FIGURE 1 in The advertisement call of Scinax funereus (Cope, 1874) (Anura: Hylidae) from Ecuadorian Amazon
FIGURE 1. (A–D) Adult male of Scinax funereus (QCAZA 51043) from Jatun Sacha Research Station, Napo Province, Ecuador; and the (E) audiospectrogram (top) and respective oscillogram (bottom) of its advertisement call. Photographs by M. Read. Sound file: LS110277-Scinax-funereus-JatunSacha-28May2011.
FIGURE 1 in The advertisement call of Boana freicanecae (Carnaval & Peixoto, 2004) (Anura Hylidae), an endemic and poorly known treefrog from northeastern Brazil
FIGURE 1. Color in life and advertisement call of Boana freicanecae. (A and B) Calling males (MUFAL 10855 above and MUFAL11077 below) recorded at the ESEC Murici, Municipality of Murici, State of Alagoas, Brazil. (C) Oscillogram, (D) spectrogram, black arrows indicate the energy in between the sparse harmonic bands and (E) power spectrum of a call composed of two notes (Boana_freicanecaeMurici_AL1aBSL, date 01 May 2013, local horary 22:32h, air temperature 23.4ºC, air relative humidity 92%).
FIGURE 1 in The advertisement call of the rare casque-headed frog Nyctimantis galeata (Anura Hylidae) from its type locality, Morro do Chapéu, Bahia, Brazil
FIGURE 1. Advertisement call of Nyctimantis galeata from the municipality of Morro do Chapéu, state of Bahia, Brazil (air temperature 18–20ºC). A: Spectrogram and waveform of call (in the background noise calls of Proceratophrys redacta can be observed); B: Spectrogram, waveform and power spectrum of a note; C: Photograph of an adult N. galeata (MZUESC 21978, SVL = 4.43 cm).
FIGURE 1 in The advertisement call of the Colombian endemic glassfrog Rulyrana susatamai (Anura: Centrolenidae)
FIGURE 1. Oscillogram (A), audiospectrogram (B) and Power spectrum (C) of the advertisement call of Rulyrana susatamai from the municipality of Líbano, department of Tolima, Colombia, registered at a temperature of 19.8 °C and relative humidity of 90 %. (D) Voucher specimen CZUT–A 2819, snout-to-vent length: 22.56 mm. Call sample deposited at Fonoteca Zoológica, FZ_Sound Code: 11974.
FIGURE 1 in Intra- and interindividual variation in the advertisement call of Dendropsophus branneri (Cochran, 1948) (Anura: Hylidae)
FIGURE 1. Advertisement call of a Dendropsophus branneri male (Cochran, 1948). The individual was recorded at the Camocim Forest, a fragment of forest area in the urban perimeter of Recife, in the state of Pernambuco, Brazil. Air temperature: 26°C; air humidity: 75%. SVL = 24mm; mass = 1.10g. Individual voucher: SCLEHP0101. a) Oscillogram of the call, b) Oscillogram of note, c) Spectogram of note, and d) Spectogram of the call.
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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
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.