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Bioacoustics

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https://www.readbyqxmd.com/read/28809924/species-delimitation-in-frogs-from-south-american-temperate-forests-the-case-of-eupsophus-a-taxonomically-complex-genus-with-high-phenotypic-variation
#1
Claudio Correa, Dayana Vásquez, Camila Castro-Carrasco, Álvaro Zúñiga-Reinoso, Juan Carlos Ortiz, R Eduardo Palma
One of the most characteristic and abundant amphibian taxa of South American temperate forests is Eupsophus. The ten currently recognized species of the genus have been divided in two species groups, roseus and vertebralis, but most of them, eight, belong to the roseus group. Recent phylogeographic and phylogenetic studies have suggested that species diversity of the roseus group could be underestimated. An examination of the literature shows that species of the roseus group exhibit high levels of variation in their external characteristics, particularly those used as diagnostic characters, which compromises their taxonomy and hinders their field recognition...
2017: PloS One
https://www.readbyqxmd.com/read/28769667/molecular-morphological-and-acoustic-assessment-of-the-genus-ophryophryne-anura-megophryidae-from-langbian-plateau-southern-vietnam-with-description-of-a-new-species
#2
Nikolay A Poyarkov Jr, Tang Van Duong, Nikolai L Orlov, Svetlana S Gogoleva, Anna B Vassilieva, Luan Thanh Nguyen, Vu Dang Hoang Nguyen, Sang Ngoc Nguyen, Jing Che, Stephen Mahony
Asian Mountain Toads (Ophryophryne) are a poorly known genus of mostly small-sized anurans from southeastern China and Indochina. To shed light on the systematics within this group, the most comprehensive mitochondrial DNA phylogeny for the genus to date is presented, and the taxonomy and biogeography of this group is discussed. Complimented with extensive morphological data (including associated statistical analyses), molecular data indicates that the Langbian Plateau, in the southern Annamite Mountains, Vietnam, is one of the diversity centres of this genus where three often sympatric species of Ophryophryne are found, O...
2017: ZooKeys
https://www.readbyqxmd.com/read/28764431/bat-bioacoustics
#3
Whitlow W L Au
No abstract text is available yet for this article.
July 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28725381/extending-bioacoustic-monitoring-of-birds-aloft-through-flight-call-localization-with-a-three-dimensional-microphone-array
#4
Phillip M Stepanian, Kyle G Horton, David C Hille, Charlotte E Wainwright, Phillip B Chilson, Jeffrey F Kelly
Bioacoustic localization of bird vocalizations provides unattended observations of the location of calling individuals in many field applications. While this technique has been successful in monitoring terrestrial distributions of calling birds, no published study has applied these methods to migrating birds in flight. The value of nocturnal flight call recordings can increase with the addition of three-dimensional position retrievals, which can be achieved with adjustments to existing localization techniques...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28686679/the-acoustic-repertoire-and-behavioural-context-of-the-vocalisations-of-a-nocturnal-dasyurid-the-eastern-quoll-dasyurus-viverrinus
#5
Annalie Dorph, Paul G McDonald
Defining an acoustic repertoire is essential to understanding vocal signalling and communicative interactions within a species. Currently, quantitative and statistical definition is lacking for the vocalisations of many dasyurids, an important group of small to medium-sized marsupials from Australasia that includes the eastern quoll (Dasyurus viverrinus), a species of conservation concern. Beyond generating a better understanding of this species' social interactions, determining an acoustic repertoire will further improve detection rates and inference of vocalisations gathered by automated bioacoustic recorders...
2017: PloS One
https://www.readbyqxmd.com/read/28610170/integration-of-molecular-bioacoustical-and-morphological-data-reveals-two-new-cryptic-species-of-i-pelodytes-i-anura-pelodytidae-from-the-iberian-peninsula
#6
Jesús Díaz-Rodríguez, Marcelo Gehara, Rafael Márquez, Miguel Vences, Helena Gonçalves, Fernando Sequeira, Iñigo Martínez-Solano, Miguel Tejedo
Parsley frogs (Pelodytes) comprise the only genus in the family Pelodytidae, an ancient anuran lineage that split from their closest relatives over 140 million years ago. Pelodytes is a Palearctic group restricted to Western Eurasia including three extant species: the eastern species P. caucasicus, endemic to the Caucasus area, and two closely related species inhabiting Western Europe: the Iberian endemic P. ibericus and the more widespread P. punctatus. Previous studies based on mitochondrial and nuclear DNA markers have revealed the existence of two additional lineages of Parsley frogs in the Iberian Peninsula, which have been flagged as candidate species...
March 13, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610096/the-genus-i-phlesirtes-i-bolivar-1922-orthoptera-tettigoniidae-conocephalinae-conocephalini-karniellina-a-review-of-the-genus-with-data-on-its-bioacoustics-and-the-description-of-new-species
#7
Claudia Hemp, Klaus-Gerhard Heller
Species of the genus Phlesirtes are reviewed in this paper and 16 new species described. A key is provided to the species of Phlesirtes. Among the subtribe Karniellina of Conocephalini members of the genus Phlesirtes occupy habitats of montane to afroalpine grasslands in East Africa. All recorded species produced long-lasting, trill-like calling songs, consisting of sequences of continuously repeated syllables or syllable pairs with the peak of the carrier frequency in the low ultrasound.
March 22, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609991/the-use-of-bioacoustics-in-anuran-taxonomy-theory-terminology-methods-and-recommendations-for-best-practice
#8
Jörn Köhler, Martin Jansen, Ariel Rodríguez, Philippe J R Kok, Luís Felipe Toledo, Mike Emmrich, Frank Glaw, Célio F B Haddad, Mark-Oliver Rödel, Miguel Vences
Vocalizations of anuran amphibians have received much attention in studies of behavioral ecology and physiology, but also provide informative characters for identifying and delimiting species. We here review the terminology and variation of frog calls from a perspective of integrative taxonomy, and provide hands-on protocols for recording, analyzing, comparing, interpreting and describing these sounds. Our focus is on advertisement calls, which serve as premating isolation mechanisms and, therefore, convey important taxonomic information...
April 11, 2017: Zootaxa
https://www.readbyqxmd.com/read/28599521/using-nonlinear-time-warping-to-estimate-north-pacific-right-whale-calling-depths-in-the-bering-sea
#9
Aaron Thode, Julien Bonnel, Margaux Thieury, Aileen Fagan, Chris Verlinden, Dana Wright, Catherine Berchok, Jessica Crance
Calling depth distributions are estimated for two types of calls produced by critically endangered eastern North Pacific right whales (NPRWs) in the Bering Sea, using passive acoustic data collected with bottom-mounted hydrophone recorders. Nonlinear time resampling of 12 NPRW "upcalls" and 20 "gunshots" recorded in a critical NPRW habitat isolated individual normal mode arrivals from each call. The relative modal arrival times permitted range estimates between 1 and 40 km, while the relative modal amplitudes permitted call depth estimates, provided that environmental inversions were obtained from high signal-to-noise ratio calls...
May 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28599517/acoustical-standards-news
#10
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...
May 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28589845/deep-phylogeographic-breaks-in-magpie-pica-pica-across-the-holarctic-concordance-with-bioacoustics-and-phenotypes
#11
Alexey P Kryukov, Liudmila N Spiridonova, Sayaka Mori, Vladimir Yu Arkhipov, Yaroslav A Red'kin, Oleg A Goroshko, Evgeny G Lobkov, Elisabeth Haring
We examined sequences of the mitochondrial control region in magpies (Pica pica) from the entire distribution range and found deep genetic splits into four major lineages: (1) group West (Europe-Siberia), (2) group East (southern Far East), (3) P. p. mauritanica (North Africa), and (4) P. p. hudsonia (North America). These lineages show a geographic pattern corresponding to known subspecies or subspecies groups. Genetic variation within the widely-distributed group West is low and neutrality tests supported a recent expansion scenario...
June 2017: Zoological Science
https://www.readbyqxmd.com/read/28586687/marine-bioacoustics
#12
John C Montgomery, Craig A Radford
The marine environment is the planet's largest, yet in many respects the least accessible. Our human sensory repertoire, with its emphasis on vision and air-adapted hearing, does not serve us well underwater. Underwater vision is often limited and as divers we find hearing of little, or no, use. Yet we know from the physics that underwater sound has properties well suited to serve as sensory and communication channels for suitably-adapted marine animals. The rapidly developing area of marine bioacoustics seeks to characterise underwater sound in relation to the acoustic capability of particular species (acoustic habitat), and discover the role of acoustics in the lives of marine animals (acoustic ecology) (Clarke et al...
June 5, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28501612/the-effects-of-pleistocene-climate-change-on-biotic-differentiation-in-a-montane-songbird-clade-from-wallacea
#13
Nathaniel S R Ng, Peter R Wilton, Dewi Malia Prawiradilaga, Ywee Chieh Tay, Mochamad Indrawan, Kritika M Garg, Frank E Rheindt
The role of Pleistocene Ice Age in tropical diversification is poorly understood, especially in archipelagos, in which glaciation-induced sea level fluctuations may lead to complicated changes in land distribution. To assess how Pleistocene land bridges may have facilitated gene flow in tropical archipelagos, we investigated patterns of diversification in the rarely-collected rusty-bellied fantail Rhipidura teysmanni (Passeriformes: Rhipiduridae) complex from Wallacea using a combination of bioacoustic traits and whole-genome sequencing methods (dd-RADSeq)...
May 10, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28480008/designing-better-frog-call-recognition-models
#14
Paul S Crump, Jeff Houlahan
Advances in bioacoustic technology, such as the use of automatic recording devices, allow wildlife monitoring at large spatial scales. However, such technology can produce enormous amounts of audio data that must be processed and analyzed. One potential solution to this problem is the use of automated sound recognition tools, but we lack a general framework for developing and validating these tools. Recognizers are computer models of an animal sound assembled from "training data" (i.e., actual samples of vocalizations)...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28438699/cryptic-diversity-in-amazonian-frogs-integrative-taxonomy-of-the-genus-anomaloglossus-amphibia-anura-aromobatidae-reveals-a-unique-case-of-diversification-within-the-guiana-shield
#15
Jean-Pierre Vacher, Philippe J R Kok, Miguel T Rodrigues, Jucivaldo Dias Lima, Andy Lorenzini, Quentin Martinez, Manon Fallet, Elodie A Courtois, Michel Blanc, Philippe Gaucher, Maël Dewynter, Rawien Jairam, Paul Ouboter, Christophe Thébaud, Antoine Fouquet
Lack of resolution on species boundaries and distribution can hamper inferences in many fields of biology, notably biogeography and conservation biology. This is particularly true in megadiverse and under-surveyed regions such as Amazonia, where species richness remains vastly underestimated. Integrative approaches using a combination of phenotypic and molecular evidence have proved extremely successful in reducing knowledge gaps in species boundaries, especially in animal groups displaying high levels of cryptic diversity like amphibians...
April 21, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28393311/discrimination-of-acoustically-similar-conspecific-and-heterospecific-vocalizations-by-black-capped-chickadees-poecile-atricapillus
#16
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...
July 2017: Animal Cognition
https://www.readbyqxmd.com/read/28376365/bioacoustic-enabled-patterning-of-human-ipsc-derived-cardiomyocytes-into-3d-cardiac-tissue
#17
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...
July 2017: Biomaterials
https://www.readbyqxmd.com/read/28372054/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 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
#19
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
#20
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
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