Sexy voices – no choices: male song in noise fails to attract females

Schmidt, Rouven; Morrison, Aoibheann; Kunc, Hansjoerg P.

doi:10.1016/j.anbehav.2014.05.018

Cited by 46 publications

(34 citation statements)

References 37 publications

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“…Traffic noise is known to mask acoustic signals as well as cues used by a wide range of taxa, including birds, mammals, insects and fish [53,[57][58][59], a process we refer to as unimodal interference (figure 2). Anthropogenic noise can also result in multimodal interference, for example, when sounds induce surface vibrations on a leaf or a water surface, resulting in covarying noise levels that may hamper the use of signals and cues in the acoustic and seismic domain at the same time ( figure 2, [51]).…”

Section: (B) Multimodal Interference By Anthropogenic Sensory Pollutionmentioning

confidence: 99%

Pollution going multimodal: the complex impact of the human-altered sensory environment on animal perception and performance

2015

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Anthropogenic sensory pollution is affecting ecosystems worldwide. Human actions generate acoustic noise, emanate artificial light and emit chemical substances. All of these pollutants are known to affect animals. Most studies on anthropogenic pollution address the impact of pollutants in unimodal sensory domains. High levels of anthropogenic noise, for example, have been shown to interfere with acoustic signals and cues. However, animals rely on multiple senses, and pollutants often co-occur. Thus, a full ecological assessment of the impact of anthropogenic activities requires a multimodal approach. We describe how sensory pollutants can co-occur and how covariance among pollutants may differ from natural situations. We review how animals combine information that arrives at their sensory systems through different modalities and outline how sensory conditions can interfere with multimodal perception. Finally, we describe how sensory pollutants can affect the perception, behaviour and endocrinology of animals within and across sensory modalities. We conclude that sensory pollution can affect animals in complex ways due to interactions among sensory stimuli, neural processing and behavioural and endocrinal feedback. We call for more empirical data on covariance among sensory conditions, for instance, data on correlated levels in noise and light pollution. Furthermore, we encourage researchers to test animal responses to a full-factorial set of sensory pollutants in the presence or the absence of ecologically important signals and cues. We realize that such approach is often time and energy consuming, but we think this is the only way to fully understand the multimodal impact of sensory pollution on animal performance and perception.

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Section: (B) Multimodal Interference By Anthropogenic Sensory Pollutionmentioning

confidence: 99%

Pollution going multimodal: the complex impact of the human-altered sensory environment on animal perception and performance

2015

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“…It is likely that this difference is related to a decrease in bird density close to the road where noise is highest, as it was found by a previous study in Carara in which bird density and bird species richness decreased with noise (Arévalo and Newhard, 2011). Noise may interfere with bird communication (Grade and Kathryn, 2016;Kleist et al, 2016), induce stress (Kight and Swaddle, 2011) and can alter mating and breeding processes (Reijnen et al, 1995;Schmidt, Morrison and Kunc, 2014). Thus, some species of forest birds may be forced to move away towards the inner forest to avoid the negative effects of road noise.…”

Section: Discussionmentioning

confidence: 99%

Road Encroachment Near Protected Areas Alters the Natural Soundscape Through Traffic Noise Pollution in Costa Rica

Arévalo

Blau

2017

Rev. Ambientales.

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La invasión de caminos cerca de las áreas protegidas altera el paisaje natural sonoro debido a la contaminación del ruido por tránsito en Costa Rica Asistente:Sharon Rodríguez-Brenes Editorial:Editorial de la Universidad Nacional de Costa Rica (EUNA)Los artículos publicados se distribuye bajo una Licencia Creative Commons Atribución 4.0 Internacional (CC BY 4.0) basada en una obra en http://www. revistas.una.ac.cr/ambientales., lo que implica la posibilidad de que los lectores puedan de forma gratuita descargar, almacenar, copiar y distribuir la versión final aprobada y publicada del artículo, siempre y cuando se mencione la fuente y autoría de la obra. 27Revista de Ciencias Ambientales (Trop J Environ Sci). (Enero-Junio, 2018 AbstractRoad networks are spatially disposed across landscapes and are differentially used by traffic, generating levels of noise that may negatively affect protected areas. The objective of this study is to quantify the length of road stretches in contact and in close proximity to protected areas, and to investigate differential effects parks may have in relation to traffic volumes and noise pollution. We measured road networks in proximity to protected areas using a geographic information system and the Atlas of Costa Rica. Noise and traffic volumes were quantified in three protected areas with direct adjacency with roads. We generated environmental sound maps to assess the influence of noise on natural sounds, such as those produced by streams (geophony) and birds (biophony). We recorded biophony close and far to the road in one of the protected areas. We found that 70 protected areas are directly or indirectly affected by road proximity. Noise was greater in roads with higher traffic usage than those with lower traffic usage, but the type of vehicles also influenced noise levels. Noise penetrated the forest with greater levels during the dry season than in the wet season. We found that the amount of biophony in seconds was lower close than far from the road, and that the stream sound was masked by traffic noise. Our results suggest that noise may contribute to habitat degradation through a decrease and loss of natural sounds, decreasing the quality of biodiversity protection. Interdisciplinary action and rigorous planning must be considered to avoid road encroachment on protected areas.Keywords: Anthrophony, biodiversity conservation, biophony, geophony, soundscape conservation, traffic volume. ResumenLas carreteras están espacialmente dispuestas en los paisajes y son utilizadas por el tránsito, generando ruido que puede afectar las áreas protegidas. El objetivo fue cuantificar los tramos de carretera, en contacto y en proximidad con áreas, e investigar los efectos que los parques pueden tener en relación con el tránsito y el ruido. Medimos tramos cercanos a las áreas utilizando el sistema de información geográfica y el Atlas de Costa Rica. El ruido y tránsito fueron cuantificados en tres áreas adyacentes a carreteras. Generamos mapas de ruido para evaluar la influencia sobre los soni...

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“…Therefore, the quality of a given signal is not necessarily positively correlated with intensity. In addition, further sound sources such as abiotic (Brumm and Slabbekoorn, 2005;Reichert and Ronacher, 2015) or even anthropogenic noise (Lampe et al, 2012(Lampe et al, , 2014Schmidt et al, 2014) may impede signal representation and recognition. Crickets, bushcrickets and grasshoppers are known to employ several processing tools to reduce the detrimental effects of masking and noise (Einhäupl et al, 2011;Schmidt and Römer, 2011;Neuhofer and Ronacher, 2012;Hildebrandt et al, 2015), most prominently by forward masking, selective attention, formation of acoustic hemispheres and stream segregation (Pollack, 1986;Schul and Sheridan, 2006;Triblehorn and Schul, 2009;Schmidt and Römer, 2011).…”

Section: Discussion Signal Representation and Cues For Decision Makingmentioning

confidence: 99%

Decision making and preferences for acoustic signals in choice situations by female crickets

Gabel

Kuntze

Hennig

2015

Journal of Experimental Biology

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Multiple attributes usually have to be assessed when choosing a mate. Efficient choice of the best mate is complicated if the available cues are not positively correlated, as is often the case during acoustic communication. Because of varying distances of signalers, a female may be confronted with signals of diverse quality at different intensities. Here, we examined how available cues are weighted for a decision by female crickets. Two songs with different temporal patterns and/or sound intensities were presented in a choice paradigm and compared with female responses from a no-choice test. When both patterns were presented at equal intensity, preference functions became wider in choice situations compared with a no-choice paradigm. When the stimuli in two-choice tests were presented at different intensities, this effect was counteracted as preference functions became narrower compared with choice tests using stimuli of equal intensity. The weighting of intensity differences depended on pattern quality and was therefore non-linear. A simple computational model based on pattern and intensity cues reliably predicted female decisions. A comparison of processing schemes suggested that the computations for pattern recognition and directionality are performed in a network with parallel topology. However, the computational flow of information corresponded to serial processing.

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Sexy voices – no choices: male song in noise fails to attract females

Cited by 46 publications

References 37 publications

Pollution going multimodal: the complex impact of the human-altered sensory environment on animal perception and performance

Pollution going multimodal: the complex impact of the human-altered sensory environment on animal perception and performance

Road Encroachment Near Protected Areas Alters the Natural Soundscape Through Traffic Noise Pollution in Costa Rica

Decision making and preferences for acoustic signals in choice situations by female crickets

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