Can you hear me now? A review of signal transmission and experimental evidence for the acoustic adaptation hypothesis

Hardt, Braelei; Benedict, Lauryn

doi:10.1080/09524622.2020.1858448

Cited by 34 publications

(31 citation statements)

References 94 publications

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“…Our study is in support of the acoustic adaptation hypothesis (AAH), which posits that animals should use signals that travel well within the environment that they are found [152][153][154][155][156]. A review of playback tests in birds, mammals, insects, and anurans revealed that transmission properties consistently varied by habitat (e.g., closed habitats degraded signals more than open), confirming that habitats should provide different selection pressures on acoustic transmission [154]. They found that 63% of studies demonstrated at least some evidence of species-specific acoustic fidelity, which confirmed the results of other similar reviews [154].…”

Section: Predicting Through Patternssupporting

confidence: 84%

“…Different habitats, with different vegetation structures, will influence how stridulatory or vibrational acoustic signals are propagated, as well as the extent to which species live cryptically, in leaf litter or similarly unobtrusive niches. Our study is in support of the acoustic adaptation hypothesis (AAH), which posits that animals should use signals that travel well within the environment that they are found [152][153][154][155][156]. A review of playback tests in birds, mammals, insects, and anurans revealed that transmission properties consistently varied by habitat (e.g., closed habitats degraded signals more than open), confirming that habitats should provide different selection pressures on acoustic transmission [154].…”

Section: Predicting Through Patternssupporting

confidence: 81%

“…A review of playback tests in birds, mammals, insects, and anurans revealed that transmission properties consistently varied by habitat (e.g., closed habitats degraded signals more than open), confirming that habitats should provide different selection pressures on acoustic transmission [154]. They found that 63% of studies demonstrated at least some evidence of species-specific acoustic fidelity, which confirmed the results of other similar reviews [154]. Hardt & Benedict [154] outline many reasons why acoustic fidelity may not be present, however, including if calls are innate or learned, variation in habitat fidelity, species-specific responses to evolutionary pressures, and also inconsistencies in methodologies [154].…”

Section: Predicting Through Patternsmentioning

confidence: 99%

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Environmental Correlates of Sexual Signaling in the Heteroptera: A Prospective Study

Gourevitch¹,

Shuker²

2021

Insects

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Sexual selection is a major evolutionary process, shaping organisms in terms of success in competition for access to mates and their gametes. The study of sexual selection has provided rich empirical and theoretical literature addressing the ecological and evolutionary causes and consequences of competition for gametes. However, there remains a bias towards individual, species-specific studies, whilst broader, cross-species comparisons looking for wider-ranging patterns in sexual selection remain uncommon. For instance, we are still some ways from understanding why particular kinds of traits tend to evolve under sexual selection, and under what circumstances. Here we consider sexual selection in the Heteroptera, a sub-order of the Hemiptera, or true bugs. The latter is the largest of the hemimetabolous insect orders, whilst the Heteroptera itself comprises some 40,000-plus described species. We focus on four key sexual signaling modes found in the Heteroptera: chemical signals, acoustic signaling via stridulation, vibrational (substrate) signaling, and finally tactile signaling (antennation). We compare how these modes vary across broad habitat types and provide a review of each type of signal. We ask how we might move towards a more predictive theory of sexual selection, that links mechanisms and targets of sexual selection to various ecologies.

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Section: Predicting Through Patternssupporting

confidence: 84%

Section: Predicting Through Patternssupporting

confidence: 81%

Section: Predicting Through Patternsmentioning

confidence: 99%

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Environmental Correlates of Sexual Signaling in the Heteroptera: A Prospective Study

Gourevitch¹,

Shuker²

2021

Insects

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“…Excess attenuation represents the retention of a signal's clarity over distance while accounting for attenuation caused by atmospheric absorption and spherical spreading. For equations used, see Hardt and Benedict (2020).…”

Section: Acoustic Analysismentioning

confidence: 99%

“…We predicted that male cascades, the main broadcast signal of this species, would show the highest signal consistency. We believe this metric offers a more complete picture of signal propagation in our study species, as it has been long hypothesized that birds living in open spaces should adapt their signals to improve propagation consistency instead of, or in addition to, transmission distance (Morton, 1975;reviewed in Boncoraglio and Saino, 2007;Hardt and Benedict, 2020).…”

Section: Introductionmentioning

confidence: 99%

Form and Function Predict Acoustic Transmission Properties of the Songs of Male and Female Canyon Wrens

2021

Self Cite

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To function effectively, animal signals must transmit through the environment to receivers, and signal transmission properties depend on signal form. Here we investigated how the transmission of multiple parts of a well-studied signal, bird song, varies between males and females of one species. We hypothesized that male and female songs would have different transmission properties, reflecting known differences in song form and function. We further hypothesized that two parts of male song used differentially in broadcast singing and aggressive contests would transmit differently. Analyses included male and female songs from 20 pairs of canyon wrens (Catherpes mexicanus) played and re-recorded in species-typical habitat. We found that male song cascades used in broadcast singing propagated farther than female songs, with higher signal-to-noise ratios at distance. In contrast, we demonstrated relatively restricted propagation of the two vocalization types typically used in short-distance aggressive signaling, female songs and male “cheet” notes. Of the three tested signals, male “cheet” notes had the shortest modeled propagation distances. Male and female signals blurred similarly, with variable patterns of excess attenuation. Both male song parts showed more consistent transmission across the duration of the signal than did female songs. Song transmission, thus, varied by sex and reflected signal form and use context. Results support the idea that males and females of the same species can show distinctly different signal evolution trajectories. Sexual and social selection pressures can shape sex-specific signal transmission, even when males and females are communicating in shared physical environments.

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Female preferences for dominant frequency in frogs: constraints and impact on sexual size dimorphism

Bernardy,

Melo,

Llusia

et al. 2023

Behav Ecol Sociobiol

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Can you hear me now? A review of signal transmission and experimental evidence for the acoustic adaptation hypothesis

Cited by 34 publications

References 94 publications

Environmental Correlates of Sexual Signaling in the Heteroptera: A Prospective Study

Environmental Correlates of Sexual Signaling in the Heteroptera: A Prospective Study

Form and Function Predict Acoustic Transmission Properties of the Songs of Male and Female Canyon Wrens

Female preferences for dominant frequency in frogs: constraints and impact on sexual size dimorphism

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