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https://www.readbyqxmd.com/read/28393311/discrimination-of-acoustically-similar-conspecific-and-heterospecific-vocalizations-by-black-capped-chickadees-poecile-atricapillus
#1
Allison H Hahn, Kimberley A Campbell, Jenna V Congdon, John Hoang, Neil McMillan, Erin N Scully, Joshua J H Yong, Julie E Elie, Christopher B Sturdy
Chickadees produce a multi-note chick-a-dee call in multiple socially relevant contexts. One component of this call is the D note, which is a low-frequency and acoustically complex note with a harmonic-like structure. In the current study, we tested black-capped chickadees on a between-category operant discrimination task using vocalizations with acoustic structures similar to black-capped chickadee D notes, but produced by various songbird species, in order to examine the role that phylogenetic distance plays in acoustic perception of vocal signals...
April 9, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28376365/bioacoustic-enabled-patterning-of-human-ipsc-derived-cardiomyocytes-into-3d-cardiac-tissue
#2
Vahid Serpooshan, Pu Chen, Haodi Wu, Soah Lee, Arun Sharma, Daniel A Hu, Sneha Venkatraman, Adarsh Venkataraman Ganesan, Osman Berk Usta, Martin Yarmush, Fan Yang, Joseph C Wu, Utkan Demirci, Sean M Wu
The creation of physiologically-relevant human cardiac tissue with defined cell structure and function is essential for a wide variety of therapeutic, diagnostic, and drug screening applications. Here we report a new scalable method using Faraday waves to enable rapid aggregation of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) into predefined 3D constructs. At packing densities that approximate native myocardium (10(8)-10(9) cells/ml), these hiPSC-CM-derived 3D tissues demonstrate significantly improved cell viability, metabolic activity, and intercellular connection when compared to constructs with random cell distribution...
March 28, 2017: Biomaterials
https://www.readbyqxmd.com/read/28372054/acoustical-standards-news
#3
Neil B Stremmel, Christopher J Struck
American National Standards (ANSI Standards) developed by Accredited Standards Committees S1, S2, S3, S3/SC 1, and S12 in the areas of acoustics, mechanical vibration and shock, bioacoustics, animal bioacoustics, and noise, respectively, are published by the Acoustical Society of America (ASA). In addition to these standards, ASA publishes a catalog of Acoustical American National Standards. To receive a copy of the latest Standards catalog, please contact Neil B. Stremmel.Comments are welcomed on all material in Acoustical Standards News...
March 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28289149/experimental-validation-of-the-tuneable-diaphragm-effect-in-modern-acoustic-stethoscopes
#4
Karolina M Nowak, Lukasz J Nowak
PURPOSE: The force with which the diaphragm chestpiece of a stethoscope is pressed against the body of a patient during an auscultation examination introduces the initial stress and deformation to the diaphragm and the underlying tissues, thus altering the acoustic parameters of the sound transmission path. If the examination is performed by an experienced physician, he will intuitively adjust the amount of the force in order to achieve the optimal sound quality. However, in case of becoming increasingly popular auto-diagnosis and telemedicine auscultation devices with no such feedback mechanisms, the question arises regarding the influence of the possible force mismatch on the parameters of the recorded signal...
March 13, 2017: Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28264355/bioacoustic-analysis-in-i-scinax-i-i-hayii-i-barbour-1909-anura-hylidae-at-its-type-locality-in-petr%C3%A3-polis-rio-de-janeiro-brazil
#5
Lucas Rodrigo Dos Santos, Itamar Alves Martins
Scinax hayii was described in 1909 from the municipality of Petrópolis, State of Rio de Janeiro, Brazil. Morphological variation and advertisement calls have been previously reported for other populations across the species distribution (Lutz 1973; Heyer et al. 1990; Cardoso & Andrade 1991; Pombal et al. 1995; Magrini et al. 2011; Abrunhosa et al. 2014). However, no information on calls are available from specimens recorded at the type locality, preventing the correct characterization of the species (Magrini et al...
February 20, 2017: Zootaxa
https://www.readbyqxmd.com/read/28264277/new-species-of-i-endecous-i-grylloidea-phalangopsidae-luzarinae-from-the-igua%C3%A3-u-national-park-brazil-including-bioacoustics-cytogenetic-and-distribution-data
#6
Pedro G B Souza-Dias, Neucir Szinwelski, Marcos Fianco, Elliott Centeno DE Oliveira, Francisco DE A G DE Mello, Edison Zefa
In this study we describe two new species of cavicolous-straminicolous crickets for southern Brazil. Endecous chape n. sp. and E. naipi n. sp. are sympatric crickets that inhabit the Atlantic Semideciduous Forest of the Iguaçu National Park and adjacent areas. The descriptions were based on morphological characters, mainly from male genitalia and tegmina of adult males. Furthermore, we describe the chromosomes and the calling song of one of the new species, E. chape n. sp., presenting a discussion about the morphology of the phallic complex of Endecous and a distribution map for the species of the genus...
March 1, 2017: Zootaxa
https://www.readbyqxmd.com/read/28253667/reconstruction-of-the-forehead-acoustic-properties-in-an-indo-pacific-humpback-dolphin-sousa-chinensis-with-investigation-on-the-responses-of-soft-tissue-sound-velocity-to-temperature
#7
Zhongchang Song, Yu Zhang, Per Berggren, Chong Wei
Computed tomography (CT) imaging and ultrasound experimental measurements were combined to reconstruct the acoustic properties (density, velocity, and impedance) of the head from a deceased Indo-Pacific humpback dolphin (Sousa chinensis). The authors extracted 42 soft forehead tissue samples to estimate the sound velocity and density properties at room temperature, 25.0  °C. Hounsfield Units (HUs) of the samples were read from CT scans. Linear relationships between the tissues' HUs and velocity, and HUs and density were revealed through regression analyses...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28248998/systematics-of-the-dendropsophus-leucophyllatus-species-complex-anura-hylidae-cryptic-diversity-and-the-description-of-two-new-species
#8
Marcel A Caminer, Borja Milá, Martin Jansen, Antoine Fouquet, Pablo J Venegas, Germán Chávez, Stephen C Lougheed, Santiago R Ron
Genetic data in studies of systematics of Amazonian amphibians frequently reveal that purportedly widespread single species in reality comprise species complexes. This means that real species richness may be significantly higher than current estimates. Here we combine genetic, morphological, and bioacoustic data to assess the phylogenetic relationships and species boundaries of two Amazonian species of the Dendropsophus leucophyllatus species group: D. leucophyllatus and D. triangulum. Our results uncovered the existence of five confirmed and four unconfirmed candidate species...
2017: PloS One
https://www.readbyqxmd.com/read/28243532/seven-new-species-of-night-frogs-anura-nyctibatrachidae-from-the-western-ghats-biodiversity-hotspot-of-india-with-remarkably-high-diversity-of-diminutive-forms
#9
Sonali Garg, Robin Suyesh, Sandeep Sukesan, S D Biju
The Night Frog genus Nyctibatrachus (Family Nyctibatrachidae) represents an endemic anuran lineage of the Western Ghats Biodiversity Hotspot, India. Until now, it included 28 recognised species, of which more than half were described recently over the last five years. Our amphibian explorations have further revealed the presence of undescribed species of Nights Frogs in the southern Western Ghats. Based on integrated molecular, morphological and bioacoustic evidence, seven new species are formally described here as Nyctibatrachus athirappillyensis sp...
2017: PeerJ
https://www.readbyqxmd.com/read/28187674/a-new-species-of-poison-dart-frog-anura-dendrobatidae-from-manu-province-amazon-region-of-southeastern-peru-with-notes-on-its-natural-history-bioacoustics-phylogenetics-and-recommended-conservation-status
#10
Shirley J Serrano-Rojas, Andrew Whitworth, Jaime Villacampa, Rudolf VON May, Roberto C Gutiérrez, José M Padial, Juan C Chaparro
We describe and name a new species of poison-dart frog from the Amazonian slopes of the Andes in Manu Province, Madre de Dios Department, Peru; specifically within the Amarakaeri Communal Reserve and the buffer zone of Manu National Park. Ameerega shihuemoy sp. nov. is supported by a unique combination of characters: black dorsum with cream to light orange dorsolateral lines, blue belly reticulated with black, and the lack of axillary, thigh and calf flash marks. Within Ameerega, it shares the general appearance of A...
January 16, 2017: Zootaxa
https://www.readbyqxmd.com/read/28187641/cryptic-within-cryptic-genetics-morphometrics-and-bioacoustics-delimitate%C3%A2-a-new-species-of-i-eleutherodactylus-i-anura-eleutherodactylidae-from-eastern-cuba
#11
Ariel Rodríguez, Álvaro Dugo-Cota, Santiago Montero-Mendieta, Alejandro Gonzalez-Voyer, Roberto Alonso Bosch, Miguel Vences, Carles Vilà
We studied the variation in genetics, bioacustics, and morphology in Eleutherodactylus glamyrus, a regionally endemic frog species restricted to high elevations in the Sierra Maestra Massif, Western Cuba that was originally described as a cryptic species hidden under the name E. auriculatus. Genetic analysis of mtDNA sequences of the 16S and cob genes identify two allopatric and strongly supported mitochondrial clades (phylogroups) which also showed no haplotype sharing in the nuclear Rag-1 gene. Bioacustic, and morphological comparisons concordantly identify these two phylogroups as independent evolutionary lineages...
January 20, 2017: Zootaxa
https://www.readbyqxmd.com/read/28147623/acoustical-standards-news
#12
Neil B Stremmel, Christopher J Struck
American National Standards (ANSI Standards) developed by Accredited Standards Committees S1, S2, S3, S3/SC 1, and S12 in the areas of acoustics, mechanical vibration and shock, bioacoustics, animal bioacoustics, and noise, respectively, are published by the Acoustical Society of America (ASA). In addition to these standards, ASA publishes a catalog of Acoustical American National Standards. To receive a copy of the latest Standards catalog, please contact Neil Stremmel.Comments are welcomed on all material in Acoustical Standards News...
January 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28117380/body-size-and-vocalization-in-primates-and-carnivores
#13
D L Bowling, M Garcia, J C Dunn, R Ruprecht, A Stewart, K-H Frommolt, W T Fitch
A fundamental assumption in bioacoustics is that large animals tend to produce vocalizations with lower frequencies than small animals. This inverse relationship between body size and vocalization frequencies is widely considered to be foundational in animal communication, with prominent theories arguing that it played a critical role in the evolution of vocal communication, in both production and perception. A major shortcoming of these theories is that they lack a solid empirical foundation: rigorous comparisons between body size and vocalization frequencies remain scarce, particularly among mammals...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28017857/bioacoustic-and-multi-locus-dna-data-of-ninox-owls-support-high-incidence-of-extinction-and-recolonisation-on-small-low-lying-islands-across-wallacea
#14
Chyi Yin Gwee, Les Christidis, James A Eaton, Janette A Norman, Colin R Trainor, Philippe Verbelen, Frank E Rheindt
Known for their rich biodiversity and high level of endemism, the islands of Wallacea serve as natural laboratories for the study of spatio-temporal evolution and patterns of species diversification. Our study focuses on the owl genus Ninox, particularly the Southern Boobook (N. novaeseelandiae) and Moluccan Boobook (N. squamipila) complexes, which are widely distributed across Australasia. We conducted bioacoustic and multi-locus DNA analyses of 24 Ninox owl taxa to evaluate relationships and levels of divergence within the two complexes and ultimately assess the relationship between patterns of taxonomic differentiation and bioclimatic factors...
April 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27988599/the-advertisement-calls-of-i-quasipaa-i-i-shini-i-ahl-1930-anura-dicroglossidae
#15
Shen Shen Kong, Rong Quan Zheng, Qi Peng Zhang
The genus Quasipaa (Family Dicroglossidae) is currently composed of 11 species distributed in China and Southeast Asia: Quasipaa acanthophora (Dubois & Ohler 2009), Q. boulengeri (Günther 1889), Q. courtoisi (Angel 1922), Q. delacouri (Angel 1928), Q. exilispinosa (Liu & Hu, 1975), Q. fasciculispina (Inger 1970), Q. jiulongensis (Huang & Liu, 1985), Q. shini (Ahl 1930), Q. spinosa (David 1875), Q. verrucospinosa (Bourret 1937), Q. yei (Chen, Qu & Jiang 2002) (Frost 2016). These species are morphologically similar, and their taxonomy is subject to controversy (Che et al...
December 4, 2016: Zootaxa
https://www.readbyqxmd.com/read/27988561/the-advertisement-call-of-i-stumpffia-i-be-k%C3%A3-hler-vences-d-cruze-amp-glaw-2010-anura-microhylidae-cophylinae
#16
Ella Z Lattenkamp, Martin Mandák, Mark D Scherz
We describe the calls of Stumpffia be Köhler, Vences, D'Cruze & Glaw, 2010. This is the first call description made for a species belonging to the large-bodied northern Madagascan radiation of Stumpffia Boettger, 1881. Stumpffia is a genus of small (~9-28 mm) microhylid frogs in the Madagascar-endemic subfamily Cophylinae Cope. Little is known about their reproductive strategies. Most species are assumed to lay their eggs in foam nests in the leaf litter of Madagascar's humid and semi-humid forests (Glaw & Vences 1994; Klages et al...
December 9, 2016: Zootaxa
https://www.readbyqxmd.com/read/27932917/a-bioacoustic-record-of-a-conservancy-in-the-mount-kenya-ecosystem
#17
Ciira Wa Maina, David Muchiri, Peter Njoroge
BACKGROUND: Environmental degradation is a major threat facing ecosystems around the world. In order to determine ecosystems in need of conservation interventions, we must monitor the biodiversity of these ecosystems effectively. Bioacoustic approaches offer a means to monitor ecosystems of interest in a sustainable manner. In this work we show how a bioacoustic record from the Dedan Kimathi University wildlife conservancy, a conservancy in the Mount Kenya ecosystem, was obtained in a cost effective manner...
2016: Biodiversity Data Journal
https://www.readbyqxmd.com/read/27914425/acoustical-standards-news
#18
Neil B Stremmel, Christopher J Struck
American National Standards (ANSI Standards) developed by Accredited Standards Committees S1, S2, S3, S3/SC 1, and S12 in the areas of acoustics, mechanical vibration and shock, bioacoustics, animal bioacoustics, and noise, respectively, are published by the Acoustical Society of America (ASA). In addition to these standards, ASA publishes a catalog of Acoustical American National Standards. To receive a copy of the latest Standards catalog, please contact Neil Stremmel.Comments are welcomed on all material in Acoustical Standards News...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27908065/acoustical-standards-news
#19
Neil B Stremmel, Christopher J Struck
American National Standards (ANSI Standards) developed by Accredited Standards Committees S1, S2, S3, S3/SC 1, and S12 in the areas of acoustics, mechanical vibration and shock, bioacoustics, animal bioacoustics, and noise, respectively, are published by the Acoustical Society of America (ASA). In addition to these standards, ASA publishes a catalog of Acoustical American National Standards. To receive a copy of the latest Standards catalog, please contact Neil Stremmel.Comments are welcomed on all material in Acoustical Standards News...
November 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27880836/towards-the-automatic-classification-of-avian-flight-calls-for-bioacoustic-monitoring
#20
Justin Salamon, Juan Pablo Bello, Andrew Farnsworth, Matt Robbins, Sara Keen, Holger Klinck, Steve Kelling
Automatic classification of animal vocalizations has great potential to enhance the monitoring of species movements and behaviors. This is particularly true for monitoring nocturnal bird migration, where automated classification of migrants' flight calls could yield new biological insights and conservation applications for birds that vocalize during migration. In this paper we investigate the automatic classification of bird species from flight calls, and in particular the relationship between two different problem formulations commonly found in the literature: classifying a short clip containing one of a fixed set of known species (N-class problem) and the continuous monitoring problem, the latter of which is relevant to migration monitoring...
2016: PloS One
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