@article {58410, title = {Defining the multidimensional phenotype: new opportunities to integrate the behavioral ecology and behavioral neuroscience of vocal learning}, year = {2021}, abstract = {

Vocal learning has evolved independently in several lineages. This complex cognitive trait is commonly treated as binary: species either possess or lack it. This view has been a useful starting place to examine the origins of vocal learning, but is also incomplete and potentially misleading, as specific components of the vocal learning program \– such as the timing, extent and nature of what is learned \– vary widely among species. In our review we revive an idea first proposed by Beecher and Brenowitz (2005) by describing six dimensions of vocal learning: (1) which vocalizations are learned, (2) how much is learned, (3) when it is learned, (4) who it is learned from, (5) what is the extent of the internal template, and (6) how is the template integrated with social learning and innovation. We then highlight key examples of functional and mechanistic work on each dimension, largely from avian taxa, and discuss how a multi-dimensional framework can accelerate our understanding of why vocal learning has evolved, and how brains became capable of this important behaviour.

}, keywords = {behavioral ecology, behavioral neuroscience, brain evolution, call, Cognition, comparative method, integrative biology, neurogenetics, song, trait evolution, vocal production learning}, doi = {10.1016/j.neubiorev.2021.02.022}, author = {Wright, Timothy F. and Derryberry, Elizabeth P.} } @article {58249, title = {Anterastes davrazensis sp. n. (Orthoptera, Tettigoniidae): morphology, song and 16S rDNA phylogeny}, year = {2012}, abstract = {

The new species Anterastes davrazensis sp. n. (Orthoptera, Tettigoniidae) is described from south-eastern Turkey. Description, diagnosis and relationships of the new species were studied utilizing morphology, male calling songs and 16S rDNA sequence data from all species in the genus. Morphology and song syllable structure indicate A. davrazensis sp. n. is related to A. uludaghensis. Phylogenetic analyses based on representative haplotypes of 16S rDNA, using Sureyaella bella, Parapholidoptera distincta and Bolua turkiyae as outgroups, also suggested strong support to the relationship of these two species. A. davrazensis sp. n. differs from its closest relative A. uludaghensis by the higher number of stridulatory pegs and the song, consisting of irregular syllable groups.

}, keywords = {Anatolia, Anterastes, Anterastes davrazensis sp. n., Orthoptera, phylogeny, song, taxonomy}, doi = {10.11646/zootaxa.3401.110.11646/zootaxa.3401.1.4}, url = {https://biotaxa.org/Zootaxa/issue/view/zootaxa.3401.1https://biotaxa.org/Zootaxa/article/view/zootaxa.3401.1.4https://biotaxa.org/Zootaxa/article/viewFile/49952/43338}, author = {Kaya, Sarp and CHOBANOV, DRAGAN and {\c C}iplak, Battal} } @article {57620, title = {Mechanisms of frequency-specific responses of ω neuron 1 in crickets (Teleogryllus oceanicus): a polysynaptic pathway for song?}, year = {2001}, abstract = {

In crickets (Teleogryllus oceanicus), the auditory interneuron \ω neuron 1 (ON1) responds to sounds over a wide range of frequencies but is most sensitive to the frequency of conspecific songs (4.5 kHz). Response latency is longest for this same frequency. We investigate the mechanisms that might account for the longer latency of ON1 to cricket-like sounds. Intracellular recordings revealed no evidence for appropriately timed postsynaptic inhibition of ON1 that might increase its latency, nor was latency affected by picrotoxin. The onset of excitatory postsynaptic potentials (EPSPs) was delayed for 4.5 kHz stimuli compared with ultrasound stimuli, pointing to a presynaptic locus for the latency difference. When ON1 is stimulated with high frequencies, discrete, apparently unitary EPSPs can be recorded in its dendrite, and these are latency-locked to spikes recorded simultaneously in the auditory nerve. This suggests that input to ON1 from high-frequency-tuned auditory receptor neurons is monosynaptic. In agreement with this, brief ultrasound stimuli evoke a single, short-latency EPSP in ON1. In contrast, the EPSP evoked by a brief 4.5 kHz stimulus consists of an early component, similar in latency to that evoked by ultrasound and possibly evoked by ultrasound-tuned receptors, and a later, dominant component. We interpret the early peak as arising from a monosynaptic afferent pathway and the late peak from a polysynaptic afferent pathway. Multiple-peak EPSPs, with timing similar to those evoked by sound stimuli, were also evoked by electrical stimulation of the auditory nerve.

}, keywords = {audition, auditory interneuron, cricket, excitatory postsynaptic potential, Insect, monosynaptic pathway, omega neuron 1 (ON1), polysynaptic pathway, song, Teleogryllus oceanicus}, author = {Faulkes, Z and Gerald S. Pollack} } @article {53424, title = {The buzz segment of Savannah sparrow song is a population marker}, journal = {Journal of Ornithology}, year = {2018}, month = {Mar-12-2018}, abstract = {

Different components of learned birdsongs change at different rates across generations, and the rate of change may correspond to the information carried by each component. To characterize the role of the buzz segment of Savannah sparrow songs, we examined recordings from southeastern Canada and the northeastern US and fully characterized buzz segments in songs recorded from two populations: one on Kent Island, NB, Canada and another in Williamstown, MA, USA. Buzzes varied geographically: Kent Island buzzes had higher mean frequencies and shorter pulse periods than Williamstown buzzes and the differences between the two populations persisted over time. Population-specific buzz characteristics also appeared to be resistant to change. Variants appeared on Kent Island in the late 1980s and were learned by some younger birds; however, these buzz variants disappeared by 2011. We conducted a playback experiment and found that males from both populations had longer responses to local buzzes. Therefore, buzz structure varies geographically; population characteristics of the buzz persist through time despite the introduction of variant forms; and territorial males discriminate between buzzes from different populations. The learned buzz segment of the song may thus serve as a population marker for Savannah sparrows.

}, keywords = {Cultural evolution, dialect, Passerculus sandwichensis, playback, Population, song}, issn = {2193-7192}, doi = {10.1007/s10336-018-1611-7}, url = {http://link.springer.com/10.1007/s10336-018-1611-7}, author = {Williams, Heather and Robins, Clint W. and Newman, Amy E. M. and Freeman-Gallant, Corey R. and Wheelwright, Nathaniel T. and Mennill, Daniel J.} } @article {53390, title = {Culturally transmitted song exchange between humpback whales ( Megaptera novaeangliae) in the southeast Atlantic and southwest Indian Ocean basins}, journal = {Royal Society Open Science}, volume = {5}, year = {2018}, month = {Apr-16-20182023}, pages = {172305}, abstract = {

In migratory marine species, investigating population connectivity and structure can be challenging given barriers to dispersal are less evident and multiple factors may influence individual movement patterns. Male humpback whales sing a song display that can provide insights into contemporary connectivity patterns, as there can be a cultural exchange of a single, population-wide shared song type with neighbouring populations in acoustic contact. Here, we investigated song exchange between populations located on the east and west coasts of Africa using 5 years of concurrent data (2001\–2005). Songs were qualitatively and quantitatively transcribed by measuring acoustic features of all song units and then compared using both Dice\’s similarity index and the Levenshtein distance similarity index (LSI) to quantitatively calculate song similarity. Song similarity varied among individuals and potentially between populations depending on the year (Dice: 36\–100\%, LSI: 21\–100\%), suggesting varying levels of population connectivity and/or interchange among years. The high degree of song sharing indicated in this study further supports genetic studies that demonstrate interchange between these two populations and reinforces the emerging picture of broad-scale connectivity in Southern Hemisphere populations. Further research incorporating additional populations and years would be invaluable for better understanding of fine-scale, song interchange patterns between Southern Hemisphere male humpback whales.

}, keywords = {Africa, cultural transmission, humpback whale, population structure, song}, doi = {10.1098/rsos.172305}, url = {http://rsos.royalsocietypublishing.org/lookup/doi/10.1098/rsos.172305https://syndication.highwire.org/content/doi/10.1098/rsos.172305}, author = {Garland, Ellen C. and Carvajal, Gabriella A. and King, Carissa D. and Tim Collins and Razafindrakoto, Yvette and Howard C. Rosenbaum} } @article {53064, title = {Context-dependent variability in blue whale acoustic behaviour}, journal = {Royal Society Open Science}, volume = {5}, year = {2018}, abstract = {

Acoustic communication is an important aspect of reproductive, foraging and social behaviours for many marine species. Northeast Pacific blue whales (Balaenoptera musculus) produce three different call types\—A, B and D calls. All may be produced as singular calls, but A and B calls also occur in phrases to form songs. To evaluate the behavioural context of singular call and phrase production in blue whales, the acoustic and dive profile data from tags deployed on individuals off southern California were assessed using generalized estimating equations. Only 22\% of all deployments contained sounds attributed to the tagged animal. A larger proportion of tagged animals were female (47\%) than male (13\%), with 40\% of unknown sex. Fifty per cent of tags deployed on males contained sounds attributed to the tagged whale, while only a few (5\%) deployed on females did. Most calls were produced at shallow depths (less than 30\ m). Repetitive phrasing (singing) and production of singular calls were most common during shallow, non-lunging dives, with the latter also common during surface behaviour. Higher sound production rates occurred during autumn than summer and they varied with time-of-day: singular call rates were higher at dawn and dusk, while phrase production rates were highest at dusk and night.

}, keywords = {acoustic communication, Balaenoptera musculus, behavioural context, blue whale, song}, doi = {10.1098/rsos.180241}, url = {http://rsos.royalsocietypublishing.org/lookup/doi/10.1098/rsos.180241https://syndication.highwire.org/content/doi/10.1098/rsos.180241}, author = {Lewis, Leah A. and Calambokidis, John and Stimpert, Alison K. and Fahlbusch, James and Friedlaender, Ari S. and McKenna, Megan F. and Mesnick, Sarah L. and Southall, Brandon L. and Szesciorka, Angela R. and {\v S}irovi{\'c}, Ana} } @article {16466, title = {Acoustic preference functions and song variability in the Hawaiian cricket Laupala cerasina}, journal = {Proceedings of the Royal Society B: Biological Sciences}, volume = {267}, year = {2000}, month = {Oct-03-2001}, pages = {577 - 584}, abstract = {

Female preference functions for di\¡erent sexual traits can di\¡er signi\¢cantly, from {\textquoteleft}unimodal\’ to {\textquoteleft}open ended\’. Through the study of acoustic communication in anurans, several studies have reported an association between static (stereotyped) traits versus dynamic (variable) traits and preference function shape (unimodal versus open ended, respectively). Observing a similar pattern in a phylogenetically independent group would suggest that deterministic forces have caused a relationship between signal variability and preference function shape in acoustic signalling systems. We examined this phenomenon in crickets, another animal characterized by intersexual acoustic communication. We measured the within- male variability for three acoustic features of the male calling song in Laupala cerasina and the corresponding shape of the female preference function for each of these features. We o\¡er support for the generalization that open-ended preference functions correspond to relatively dynamic courtship traits and unimodal preference functions correspond to relatively static courtship traits. We discuss the evolutionary signi\¢cance of these \¢ndings in the context of the natural history of the Laupala species radiation.

}, keywords = {acoustic communication, crickets, mate recognition, preference, sexual selection, song}, issn = {0962-8452}, doi = {10.1098/rspb.2000.1040}, url = {http://rspb.royalsocietypublishing.org/cgi/doi/10.1098/rspb.2000.1040}, author = {Shaw, K. L. and Herlihy, D. P.} } @article {11152, title = {The songs and taxonomy of the grasshoppers of the Chorthippus biguttulus group in the Iberian Peninsula (Orthoptera: Acrididae)}, journal = {Journal of Natural History}, volume = {22}, year = {1988}, pages = {897-929}, chapter = {897}, abstract = {

The Chorthippus biguttulus group includes a number of common European species that are difficult to distinguish morphologically but are easily recognized in the field by the distinctive calling songs of the males. These song-patterns have not previously been studied in Spain and as a result the Iberian members of the group have been misidentified in almost all the extensive Spanish literature on the ecology and cytogenetics of these insects. In this study the male calling songs of all six members of the group known from the Iberian Peninsula and North Africa are fully described and illustrated with oscillograms at several different speeds. The songs of the three species known only from Iberia or North Africa, jacobsi, yersini and marocanus, are fully described for the first time (marocanus is here raised in rank from subspecies). Notes on recognition, using both morphology and song, are given for each species, and two identification keys are provided, one based on morphology and the other on song. It is shown that the three species biguttulus, brunneus and mollis, previously believed to be widespread in Iberia, are absent from most of the peninsula.

}, keywords = {acoustics, Acrididae, Chorthippus, grasshoppers, Iberia, North Africa, Orthoptera, song, taxonomy}, doi = {10.1080/00222938800770611}, author = {D. R. Ragge and W. J. Reynolds} }