02464nas a2200229 4500008004100000245020100041210006900242520161600311653001701927653001801944653002201962653003401984653002802018653001902046653001602065653002202081653001502103100003202118700002302150700002002173856004102193 2019 eng d00aVariation in Bioacoustic Characteristics in Eleutherodactylus coqui Thomas, 1966 and Eleutherodactylus antillensis (Reinhardt and Lutken, 1863) (Anura: Eleutherodactylidae) in the Puerto Rico Bank0 aVariation in Bioacoustic Characteristics in Eleutherodactylus co3 a

Bioacoustics is an interdisciplinary science that combines biology, acoustics, and mathematics. This discipline can be used to study population ecology and behavior. Furthermore, we can use this tool to assess a population and suggest if a species of interest may be in a transitional state of becoming a new species by allopatric speciation. Amphibians communicate via sound and the environment has a key role in metabolism and sound dispersion. By analyzing temporal and spectral properties of acoustical communication in anurans, we can understand better how these animals are evolving to cope with their ever-changing environment. We studied the variation in acoustic parameters among five populations each of the red-eye coqui, Eleutherodactylus antillensis (Reinhardt and Lutken, 1863) and the common coqui, E. coqui Thomas, 1966 across the Puerto Rico Bank. These species are changing their vocalizations. Some populations have higher sound frequencies than other conspecific populations; other nocturnal species have populations with different temporal patterns of sound production. We found strong variation among the five populations examined for each species. In, E. antillensis, the size of the organism relates to temporal variation in sound production (i.e., inter-note interval and total call duration) and did not relate to spectral differentiation. In E. coqui, the population living at highest elevation above sea level assessed had a spectral footprint no other population shares, probably due to geographic isolation from other conspecific populations that live in lower elevations.

10abioacoustics10acommunication10aEleutherodactylus10aEleutherodactylus antillensis10aEleutherodactylus coqui10amicroevolution10aPuerto Rico10asound spectrogram10aspeciation1 aRíos-Franceschi, Alejandro1 aJoglar, Rafael, L.1 aThomas, Richard uhttps://bio.acousti.ca/fr/node/5799701936nas a2200265 4500008004100000022001400041245006600055210006600121260001600187520115100203653001701354653001801371653002001389653001601409653003001425653000901455653001201464653001701476653002001493653002201513653002001535653002901555100003101584856005501615 2018 eng d a1548-358400aVocal Signals of Sexual Motivation in Male and Female Rodents0 aVocal Signals of Sexual Motivation in Male and Female Rodents cJan-10-20203 a

Purpose of the Review

Rodents produce ultrasonic vocalizations (USV) under different social contexts, including courtship and reproduction. The present review aims to summarize the behavioral, bioacoustical, and physiological evidence that USV are reliable signals of sexual motivation in both male and female rodents.

Recent Findings

USV are actively produced by both sexes during sexual interactions, contrary to earlier assumptions. Male-typical and female-typical vocal behaviors can be identified. Calling rates and acoustic parameters, such as call duration, frequency, and energy, can be modulated rapidly over time by motivational state and sexual context. USV produced in response to sexual context could be regulated by the brain on a moment-to-moment basis through non-classical mechanisms of steroid action. Finally, I provide some practical considerations for the acoustic and statistical analyses of these vocal signals.

Summary

USV can be used as signals of sexual motivation in both sexes to study brain and hormonal mechanisms underlying sexual behavior or sexual differentiation.

10abioacoustics10acommunication10aGolden hamsters10aHouse mouse10aNongenomic steroid action10aRats10aRodents10aSex steroids10aSexual behavior10aSexual motivation10aSyrian hamsters10aUltrasonic vocalizations1 aFernández-Vargas, Marcela uhttp://link.springer.com/10.1007/s11930-018-0179-902381nas a2200217 4500008004100000022001400041245007900055210006900134260001600203300001400219490000700233520174200240653001701982653001801999653001402017653001802031653001402049100002002063700002502083856005502108 2015 eng d a0164-029100aCall Repertoire of the Sahamalaza Sportive Lemur, Lepilemur sahamalazensis0 aCall Repertoire of the Sahamalaza Sportive Lemur Lepilemur saham cJan-06-2015 a647 - 6650 v363 aThe acoustic structure of primate loud calls can be used as a powerful, inexpensive, and noninvasive tool for intra- and interspecific comparative analyses, reconstruction of phylogeny, and primate surveys. Despite the range of possibilities offered by acoustic analysis, only few studies so far have focused on quantitative descriptions of the acoustic structure of primate loud call repertoires. Here we aimed to assess the vocal repertoire of the solitary Sahamalaza sportive lemur, Lepilemur sahamalazensis, and to investigate potential communication functions. We recorded every sportive lemur vocalization we heard during 1000 h of nocturnal observations of eight collared individuals, as well as opportunistic searches in the Ankarafa Forest, Sahamalaza Peninsula in northwest Madagascar. In addition, we used playback experiments with four call types to clarify call function. We measured both temporal and spectral properties to describe calls quantitatively and used cross-validated discriminant function analysis to validate call types that we identified from a preliminary qualitative inspection of the spectrograms of 107 calls. We identified six distinct loud call types with the possibility of a seventh call type, with six loud call types similar to those of Lepilemur edwardsi and two loud call types similar to those of four other sportive lemur species. The described call types most likely function in mate advertisement, offspring care, and territorial defense. Future studies of loud calling of the Sahamalaza sportive lemur are needed to clarify if certain call types are sex specific and if loud calls could be used for recognition of individuals to enable noninvasive density measurements and species monitoring.10abioacoustics10aCall function10acall type10acommunication10aLepilemur1 aSeiler, Melanie1 aSchwitzer, Christoph uhttp://link.springer.com/10.1007/s10764-015-9846-0