Allometric escape from acoustic constraints is rare for frog calls

Tonini, João Filipe Riva; Provete, Diogo B.; Maciel, Natan Medeiros; Morais, Alessandro Ribeiro de; Goutte, Stéphane; Toledo, Luı́s Felipe; Pyron, R. Alexander

doi:10.1002/ece3.6155

Cited by 56 publications

(33 citation statements)

References 68 publications

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“…Baugh et al 2018, López et al 2020). Because larynx size scales with body size, smaller frog species tend to produce higher frequency calls (Tonini et al 2020). Indeed, male rocket frogs have smaller body size (SVL = 14-17 mm, Savage 2002) than glass frogs (SVL = 19-28 mm, Savage 2002), and consequently call at higher frequencies.…”

Section: Discussionmentioning

confidence: 99%

Amplification of frog calls by leaf substrates: implications for terrestrial and arboreal species

Muñoz

Halfwerk²

2020

Preprint

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Signal detection is a minimum requirement for any communicative interaction. Acoustic signals, however, often experience amplitude losses during their transmission through the environment, reducing their detection range. Displaying from sites that increase the amplitude of the sound produced, such as cavities or some reflective surfaces, can improve the detectability of signals by distant receivers. Understanding how display sites influence sound production is, however, far from understood. We measured the effect of leaf calling sites on the calls of an arboreal (Hyalinobatrachium fleischmanni) and a leaf-litter specialist (Silverstoneia flotator) frog species. We collected the leaves where males of both species were observed calling, and conducted playback experiments to measure their effect on the amplitude of frog calls. Overall, the leaves used by H. fleischmanni and S. flotator were of similar dimensions, and amplified the calls of each species by about 5.0 and 2.5 dB, respectively. The degree of call amplification was unrelated to leaf dimensions or the position of the frogs on the leaves, but explained by the different frequency content of the calls of each species. Depending on the spatial location of intended and unintended receivers, we suggest that amplification of frog calls by leaves could represent either a benefit or impose costs for arboreal and terrestrial species. We argue that the microhabitat of the substrate from which animals display needs to be considered when addressing signal evolution.

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Section: Discussionmentioning

confidence: 99%

Amplification of frog calls by leaf substrates: implications for terrestrial and arboreal species

Muñoz

Halfwerk²

2020

Preprint

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“…We focused on dominant frequency as it is easily quantifiable and less labile (e.g. in response to ambient temperature) than other calling traits (Tonini et al, 2020).…”

Section: Ecological and Life History Traitsmentioning

confidence: 99%

“…d Tonini et al (2020). Where dominant frequency data were not available for a species, we determined the mean dominant frequency from five randomly selected FrogID recordings for that species, using the sound analysis software Raven Pro 1.5.0 (FFT = 512, window = Hann, overlap = 50%; Bioacoustics Research Program, 2017).…”

Section: Ecological and Life History Traitsmentioning

confidence: 99%

Species' traits drive amphibian tolerance to anthropogenic habitat modification

Liu

Rowley

Callaghan

2021

Global Change Biology

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Anthropogenic habitat modification is accelerating, threatening the world's biodiversity.Understanding species' responses to anthropogenic modification is vital for halting species' declines. However, this information is lacking for globally threatened amphibians, informed primarily by small community-level studies. We integrated >126,000 verified citizen science observations of frogs, with a global continuous measure of anthropogenic habitat modification for a continental scale analysis of the effects of habitat modification on frogs.We derived a modification index -accounting for anthropogenic stressors such as human habitation, agriculture, transport, and energy production -for 87 species (36% of all Australian frog species). We used this index to quantify and rank each species' tolerance of anthropogenic habitat modification, then compiled traits of all the frog species and assessed how well these equipped species to tolerate modified habitats. Most of Australia's frog species examined were adversely affected by habitat modification. Habitat specialists and species with large geographic range sizes were the least tolerant of habitat modification. Call dominant frequency, body size, clutch type, and calling position (i.e., from vegetation) were also related to tolerance of habitat modification. There is an urgent need for improved consideration of anthropogenic impacts and improved conservation measures to ensure the long-term persistence of frog populations, particularly focused on specialists and species identified as intolerant of modified habitats.

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“…All rights reserved conservatism (niche conservatism hypothesis, NCH). Second, variation in particular acoustic features is strongly influenced by the organisms' body size (Rodríguez et al 2014, Tonini et al 2020, which is a key physiological and life-history trait often involved in community assembly (Kingsolver andPfenning 2007, Farjalla et al 2012). Variability in body size of coexisting species could thus influence how the acoustic space is distributed across communities (allometric constraint hypothesis, ACH).…”

Section: Accepted Articlementioning

confidence: 99%

“…First, because closely related species usually share similar characteristics, such as acoustic properties of their vocalizations (Kraft et al 2007, Gingras et al 2013, Garey et al 2018), similar distributional patterns of phylogenetic relatedness and acoustic traits in communities could arise due to phylogenetic niche conservatism (niche conservatism hypothesis, NCH). Second, variation in particular acoustic features is strongly influenced by the organisms’ body size (Rodríguez et al 2014, Tonini et al 2020), which is a key physiological and life‐history trait often involved in community assembly (Kingsolver and Pfenning 2007, Farjalla et al 2012). Variability in body size of coexisting species could thus influence how the acoustic space is distributed across communities (allometric constraint hypothesis, ACH).…”

Section: Introductionmentioning

confidence: 99%

Revisiting the drivers of acoustic similarities in tropical anuran assemblages

Sugai

Llusia

Siqueira

et al. 2021

Ecology

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Acoustic signaling is key in mediating mate-choice, which directly impacts individual fitness.Because background noise and habitat structure can impair signal transmission, the acoustic space of mixed-species assemblages has long been hypothesized to reflect selective pressures against signal interference and degradation. However, other potential drivers that received far less attention can drive similar outputs on the acoustic space. Phylogenetic niche conservatism and allometric constraints may also modulate species acoustic features, and the acoustic space of communities could be a side-effect of ecological assembly processes involving other traits (e.g. environmental filtering).Additionally, the acoustic space can also reflect the sorting of species relying on public information through extended communication networks. Using an integrative approach, we revisit the potential drivers of the acoustic space by addressing the distribution of acoustic traits, body size, and phylogenetic relatedness in tropical anuran assemblages across gradients of environmental heterogeneity in the Pantanal wetlands. We found the overall acoustic space to be aggregated compared with null expectations, even when accounting for confounding effects of body size. Across assemblages, acoustic and phylogenetic differences were positively related, while acoustic and body size similarities were negatively related, although to a minor extent. We suggest that acoustic partitioning, acoustic adaptation, and allometric constraints play a minor role in shaping the acoustic output of tropical anuran assemblages and that phylogenetic niche conservatism and public information use would influence between-assemblage variation. Our findings highlight an overlooked multivariate nature of the acoustic dimension and underscore the importance of including the ecological context of communities to understand drivers of the acoustic space.

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Allometric escape from acoustic constraints is rare for frog calls

Cited by 56 publications

References 68 publications

Amplification of frog calls by leaf substrates: implications for terrestrial and arboreal species

Amplification of frog calls by leaf substrates: implications for terrestrial and arboreal species

Species' traits drive amphibian tolerance to anthropogenic habitat modification

Revisiting the drivers of acoustic similarities in tropical anuran assemblages

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