Calling Phenology and Call Structure of Sympatric Treefrogs in Eastern Texas

2021 ◽  
Vol 109 (1) ◽  
Author(s):  
Leah K. Perez ◽  
James D. Childress ◽  
Matthew A. Kwiatkowski ◽  
Daniel Saenz ◽  
Jennifer M. Gumm
Keyword(s):  
Call Structure

scholarly journals Born to sing! Song development in a singing primate

2021 ◽  
Author(s):  
Chiara De Gregorio ◽  
Filippo Carugati ◽  
Vittoria Estienne ◽  
Daria Valente ◽  
Teresa Raimondi ◽  
...  
Keyword(s):  
Vocal Communication ◽  
Developmental Trajectories ◽  
Ontogenetic Changes ◽  
Call Structure ◽  
Historical View ◽  
Singing Behavior ◽  
Vocal Behaviour ◽  
Temporal Features ◽  
Vocal Activity ◽  
Song Development

Abstract In animal vocal communication, the development of adult-like vocalization is fundamental to interact appropriately with conspecifics. However, the factors that guide ontogenetic changes in the acoustic features remains poorly understood. In contrast with a historical view of nonhuman primate vocal production as substantially innate, recent research suggests that inheritance and physiological modification can only explain some of the developmental changes in call structure during growth. A particular case of acoustic communication is the indris' singing behavior, a peculiar case among Strepsirrhine primates. Thanks to a decade of intense data collection, this work provides the first long-term quantitative analysis on song development in a singing primate. To understand the ontogeny of such a complex vocal output, we investigated juvenile and sub-adult indris' vocal behaviour, and we found that young individuals started participating in the chorus years earlier than previously reported. Our results indicated that spectro-temporal song parameters underwent essential changes during growth. In particular, the age and sex of the emitter influenced the indris' vocal activity. We found that frequency parameters showed consistent changes across the sexes, but the temporal features showed different developmental trajectories for males and females. Given the low level of morphological sexual dimorphism and the marked differences in vocal behavior, we hypothesize that factors like social influences and auditory feedback may affect songs' features, resulting in high vocal flexibility in juvenile indris. This trait may be pivotal in a species that engages in choruses with rapid vocal turn-taking.

Dialects in pygmy marmosets? Population variation in call structure

2009 ◽  
Vol 71 (4) ◽  
pp. 333-342 ◽  
Author(s):  
Stella de la Torre ◽  
Charles T. Snowdon
Keyword(s):  
Population Variation ◽  
Call Structure ◽  
Pygmy Marmosets

Interleukin-1 induces sleep-like behavior and alters call structure in juvenile rhesus macaques

1995 ◽  
Vol 35 (2) ◽  
pp. 143-153 ◽  
Author(s):  
Elliot M. Friedman ◽  
Sue Boinski ◽  
Christopher L. Coe
Keyword(s):  
Rhesus Macaques ◽  
Interleukin 1 ◽  
Call Structure

Acoustic analysis of an intergrade zone between two call races of the Limnodynastes tasmaniensis complex (Anura : Leptodactylidae) in south-eastern Australia

1975 ◽  
Vol 23 (1) ◽  
pp. 113 ◽  
Author(s):  
MJ Littlejohn ◽  
JD Roberts
Keyword(s):  
Acoustic Analysis ◽  
Secondary Contact ◽  
Ecological Gradient ◽  
North Central ◽  
Call Structure ◽  
Central Victoria ◽  
South Eastern ◽  
Eastern Australia ◽  
Mating Calls ◽  
South Eastern Australia

Mating calls of the northern and southern call races of the L. tasmaniensis complex are described. Analysis of call structure along a transect across the main contact between these allopatric forms in north central Victoria indicates that there is a zone of intergradation between 90 and 135 km wide, about 215 km long and with a north-westerly orientation. The interaction is interpreted as a secondary contact in which there is hybrid or recombinant superiority along a subtle ecological gradient.

The litoria ewingi complex (Anura : Hylidae) in south-eastern Australia V. Interactions between northern L. ewingi and adjacent taxa

1978 ◽  
Vol 26 (1) ◽  
pp. 175 ◽  
Author(s):  
GF Watson ◽  
MJ Littlejohn
Keyword(s):  
Small Area ◽  
Character Displacement ◽  
Reproductive Character Displacement ◽  
Genetic Compatibility ◽  
Natural Interaction ◽  
Call Structure ◽  
Environmental Features ◽  
Mating Call ◽  
Eastern Australia ◽  
High Level

A small area of overlap with hybridization characterizes the interaction between northern L. ewingi and L. paraewingi. Although significant levels of postmating isolation exist between the taxa, no evidence of reproductive character displacement in mating-call structure is apparent within the contact zone. No obvious environmental features appear to correlate with the position of the zone. Northern L. ewingi and L. verreauxi alpina also form a hybrid zone where their ranges meet, and the position of the zone appears to be correlated with altitude. The taxa are characterized by a high level of genetic compatibility and no mating-call differentiation is evident. However, despite hybridization with adjacent taxa, the distinctness of northern L. ewingi is maintained away from the areas of interaction, and hence it is considered specifically distinct from L. paraewingi and L. v. alpina. No natural interaction between northern L. ewingi and L. ewingi has been located. However, they are considered to be conspecific because of: their morphological resemblance; the high level of genetic compatibility between them; and, the similarity of each of their interactions with L. paraewingi and with L. v. alpina.

scholarly journals The Inflected Alarm Caw of the American Crow: Differences in Acoustic Structure Among Individuals and Sexes

The Condor ◽  
2006 ◽  
Vol 108 (3) ◽  
pp. 518-529 ◽  
Author(s):  
Jessica L. Yorzinski ◽  
Sandra L. Vehrencamp ◽  
Kevin J. McGowan ◽  
Anne B. Clark
Keyword(s):  
Individual Differences ◽  
Function Analysis ◽  
Acoustic Measurements ◽  
American Crow ◽  
Acoustic Structure ◽  
Corvus Brachyrhynchos ◽  
Call Structure ◽  
American Crows ◽  
The Status ◽  
Family Membership

Abstract Previous research on individual differences in the acoustic structure of vocalizations and vocal recognition has largely focused on the contexts of parent-offspring interactions, territory defense, sexual interactions, and group cohesion. In contrast, few studies have examined individual differences in the acoustic structure of mobbing and alarm calls. The purpose of this study was to explore individual differences in the acoustic structure of the inflected alarm caw of the American Crow (Corvus brachyrhynchos). The alarm caws of 15 wild, marked individuals were recorded and 25 acoustic measurements were made automatically using customized software. A stepwise discriminant function analysis showed that 20 of the 25 variables were important in discriminating among individuals, with 65% classification success. We used factor analysis to reduce the large number of variables to a set of seven meaningful call features. All of these features differed among individuals, suggesting that American Crows have the potential to discriminate among individual birds on the basis of call structure alone. Five of the features differed between the sexes, with call frequency being the most significant. One clearly subordinate male clustered with the females, raising the possibility that social status partially determines the sex-based differences. Encoding of individual identity in alarm contexts may be adaptive if receiver vigilance and approach urgency depend on the status, reliability, or family membership of the alarm signaler.

scholarly journals Geographic Variation in Contact Calls of Feral North American Populations of the Monk Parakeet

The Condor ◽  
2007 ◽  
Vol 109 (2) ◽  
pp. 389-398 ◽  
Author(s):  
Susannah C. Buhrman-Deever ◽  
Amy R. Rappaport ◽  
Jack W. Bradbury
Keyword(s):  
Geographic Variation ◽  
Learning Preferences ◽  
Founder Effects ◽  
Contact Call ◽  
Isolated Populations ◽  
Monk Parakeet ◽  
Call Structure ◽  
Myiopsitta Monachus ◽  
Limited Dispersal ◽  
Contact Calls

Abstract Introduced feral populations offer a unique opportunity to study the effects of social interaction and founder effects on the development of geographic variation in learned vocalizations. Introduced populations of Monk Parakeets (Myiopsitta monachus) have been growing in number since the 1970s, with a mixture of isolated and potentially interacting populations. We surveyed diversity in contact calls of Monk Parakeet populations in Connecticut, Texas, Florida, and Louisiana. Contact call structure differed significantly among the isolated populations in each state. Contact call structure also differed significantly among potentially interacting nest colonies in coastal Connecticut, and these differences did not follow a geographic gradient. Limited dispersal distances, founder effects, and social learning preferences may play a role in call structure differences.

Professional Burnout in United States Plastic Surgery Residents: Is It a Legitimate Concern?

2019 ◽  
Vol 40 (7) ◽  
pp. 802-810 ◽  
Author(s):  
Demetrius M Coombs ◽  
Michael A Lanni ◽  
Joshua Fosnot ◽  
Ashit Patel ◽  
Richard Korentager ◽  
...  
Keyword(s):  
Medical Errors ◽  
Reconstructive Surgery ◽  
Cross Sectional Study ◽  
Relationship Status ◽  
Related Factors ◽  
Cross Sectional ◽  
Plastic And Reconstructive Surgery ◽  
Call Structure ◽  
Modifiable Factors ◽  
Professional Fulfillment

Abstract Background Physician burnout is intimately associated with institutional losses, substance abuse, depression, suicidal ideation, medical errors, and lower patient satisfaction scores. Objectives By directly sampling all US plastic and reconstructive surgery residents, this study examined burnout, medical errors, and program-related factors. Methods Cross-sectional study of data collected from current US plastic and reconstructive surgery residents at Accreditation Council for Graduate Medical Education–accredited programs during the 2018 to 2019 academic year. Previously validated survey instruments included the Stanford Professional Fulfillment and Maslach Burnout Indices. Additional data included demographics, relationship status, program-specific factors, and admission of medical errors. Results A total of 146 subjects responded. Residents from each postgraduate year (PGY) in the first 6 years were well represented. Overall burnout rate was 57.5%, and on average, all residents experienced work exhaustion and interpersonal disengagement. No relation was found between burnout and age, gender, race, relationship status, or PGY. Burnout was significantly associated with respondents who feel they matched into the wrong program, would not recommend their program to students, do not feel involved in program decisions, reported increasing hours worked in the week prior, feel that they take too much call, reported making a major medical error that could have harmed a patient, or reported making a lab error. Conclusions This study directly examined burnout, self-reported medical errors, and program suitability in US plastic and reconstructive residents based on validated scales and suggests that burnout and some medical errors may be related to program-specific, modifiable factors, not limited to, but including, involvement in program-related decisions and call structure.

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