Spectral niche segregation and community organization in a tropical cricket assemblage

Schmidt, Arne K. D.; Römer, Heiner; Riede, Klaus

doi:10.1093/beheco/ars187

Cited by 101 publications

(90 citation statements)

References 75 publications

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“…This effect could help shape the species composition of breeding aggregations and the spatial arrangement of individuals within those aggregations. Species composition will, in turn, alter the spatial and acoustic contexts in which mate choice takes place, and may ultimately influence the evolution of signal structure [41][42][43][44]. There has been considerable work on how interactions between conspecifics shape signalling behaviour [3].…”

Section: (D) Collateral Damage and Shadows Of Safety In Other Contextsmentioning

confidence: 99%

Collateral damage or a shadow of safety? The effects of signalling heterospecific neighbours on the risks of parasitism and predation

et al. 2016

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Although males often display from mixed-species aggregations, the influence of nearby heterospecifics on risks associated with sexual signalling has not been previously examined. We tested whether predation and parasitism risks depend on proximity to heterospecific signallers. Using field playback experiments with calls of two species that often display from the same ponds, tú ngara frogs and hourglass treefrogs, we tested two hypotheses: (1) calling near heterospecific signallers attractive to eavesdroppers results in increased attention from predatory bats and parasitic midges (collateral damage hypothesis) or (2) calling near heterospecific signallers reduces an individual's predation and parasitism risks, as eavesdroppers are drawn to the heterospecifics (shadow of safety hypothesis). Bat visitation was not affected by calling neighbours. The number of frog-biting midges attracted to hourglass treefrog calls, however, rose threefold when played near tú ngara calls, supporting the collateral damage hypothesis. We thus show that proximity to heterospecific signallers can drastically alter both the absolute risks of signalling and the relative strengths of pressures from predation and parasitism. Through these mechanisms, interactions between heterospecific guild members are likely to influence the evolution of signalling strategies and the distribution of species at both local and larger scales.

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Section: (D) Collateral Damage and Shadows Of Safety In Other Contextsmentioning

confidence: 99%

Collateral damage or a shadow of safety? The effects of signalling heterospecific neighbours on the risks of parasitism and predation

et al. 2016

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“…The traditional view is that the signaling strategies of animals are shaped by limiting similarity among competitors, much as competition for ecological resources is thought to promote partitioning of niche space (11)(12)(13). Partitioning of signal space may occur if species compete for position near overcrowded transmission optima, and, concurrently, if overlap in signal design impairs the detection or discrimination of signals mediating mate choice and resource competition (14).…”

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confidence: 99%

“…Under these conditions, mechanisms of selection against misdirected aggression (e.g., character displacement) or the production of unfit hybrids (e.g., reinforcement) are predicted to drive phenotypic divergence (9), whereas similar mechanisms may lead to related species signaling at different times or in different locations (13). These pathways theoretically lead to structural, temporal, and spatial partitioning of signals and signalers in animal assemblages, but tests of these patterns have produced mixed results (6,11,15).…”

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confidence: 99%

“…Conversely, species cooccurring at local scales may be less divergent because they are segregated by habitat across a study site and therefore are unlikely to signal together. Although some studies (7,11) partially overcome these issues by sampling assemblages from single points in space, none has considered the effects of habitat and the potential role of competitive interactions among related species (16). Moreover, previous studies have generally assessed partitioning in relatively small assemblages (<30 species), reducing both the likelihood of competition over transmission optima and the power of statistical tests.…”

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confidence: 99%

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Species interactions and the structure of complex communication networks

Tobias

Planquè

Cram

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

123

114

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A universal challenge faced by animal species is the need to communicate effectively against a backdrop of heterospecific signals. It is often assumed that this need results in signal divergence to minimize interference among community members, yet previous support for this idea is mixed, and few studies have tested the opposing hypothesis that interactions among competing species promote widespread convergence in signaling regimes. Using a null model approach to analyze acoustic signaling in 307 species of Amazonian birds, we show that closely related lineages signal together in time and space and that acoustic signals given in temporal or spatial proximity are more similar in design than expected by chance. These results challenge the view that multispecies choruses are structured by temporal, spatial, or acoustic partitioning and instead suggest that social communication between competing species can fundamentally organize signaling assemblages, leading to the opposite pattern of clustering in signals and signaling behavior.

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“…Researchers believe that species in undisturbed regions of this rainforest have stabilized into local spatial niches while species in disturbed regions may have abandoned their natural niches (Schmidt, Romer, & Riede, 2013). This phenomenon may be due to ecological niche differentiation and acoustic competition, whereby communication space is partitioned among species (Pijanowski et al, 2011b;Schmidt, Römer, & Riede, 2013). Spatial analysis may provide evidence for differentiation between undisturbed and disturbed regions.…”

Section: Introductionmentioning

confidence: 99%

Spatial Soundscape Ecology: Application in a Paleotropical Rainforest

VanSchaik¹

2017

JPUR

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Spectral niche segregation and community organization in a tropical cricket assemblage

Cited by 101 publications

References 75 publications

Collateral damage or a shadow of safety? The effects of signalling heterospecific neighbours on the risks of parasitism and predation

Collateral damage or a shadow of safety? The effects of signalling heterospecific neighbours on the risks of parasitism and predation

Species interactions and the structure of complex communication networks

Spatial Soundscape Ecology: Application in a Paleotropical Rainforest

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