Anthropogenic noise increases fish mortality by predation

Simpson, Stephen D.; Radford, Andrew N.; Nedelec, Sophie L.; Ferrari, Maud C. O.; Chivers, Douglas P.; McCormick, Mark I.; Meekan, Mark G.

doi:10.1038/ncomms10544

Cited by 300 publications

(243 citation statements)

References 31 publications

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“…However, our results are more in line with other work showing a lessened response to predatory stimuli in such conditions (Chan et al, 2010;Wale et al, 2013a;Simpson et al, 2015Simpson et al, , 2016. The common interpretation in the latter cases is that an individual is thus more vulnerable to predation; in the current scenario, that the reduced likelihood of mongooses fleeing to survival-related social information is maladaptive.…”

Section: Discussionsupporting

confidence: 92%

“…Chan et al, 2010;Meillère et al, 2015;Simpson et al, 2015Simpson et al, , 2016Shannon et al, 2016). Longer-term studies are needed to consider such aspects as compensation and changing responses (Bejder et al, 2009), because individuals may become more or less tolerant with repeated exposure (Scholik and Yan, 2001;Wale et al, 2013b;Radford et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Future research examining direct fitness consequences for individuals (e.g. Simpson et al, 2016) and attempting to provide causal links between anthropogenic noise and population consequences are vital if we are to understand fully, and potentially mitigate successfully, the impacts of this global pollutant. …”

Section: Discussionmentioning

confidence: 99%

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Anthropogenic noise alters dwarf mongoose responses to heterospecific alarm calls

Morris-Drake

Bracken

Kern

et al. 2017

Environmental Pollution

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. (0) 960028260, no fax number Statement of authorshipAll authors contributed to the conception and design of the study; AM and AB collected the data; AM and AB analysed the data with advice from JMK and ANR; ANR and AM wrote the first draft of the manuscript, and all authors contributed significantly to revisions. 2Anthropogenic noise is an evolutionarily novel and widespread pollutant in both terrestrial and aquatic habitats. Despite increasing evidence that the additional noise generated by human activities can affect vocal communication, the majority of research has focused on the use of conspecific acoustic information, especially sexual signals.Many animals are known to eavesdrop on the alarm calls produced by other species, enhancing their likelihood of avoiding predation, but how this use of heterospecific information is affected by anthropogenic noise has received little empirical attention.Here, we use two field-based playback experiments on a habituated wild population of dwarf mongooses (Helogale parvula) to determine how anthropogenic noise influences the response of foragers to heterospecific alarm calls. We begin by demonstrating that dwarf mongooses respond appropriately to the alarm calls of sympatric chacma baboons (Papio ursinus) and tree squirrels (Paraxerus cepapi); fleeing only to the latter.We then show that mongoose foragers are less likely to exhibit this flee response to tree squirrel alarm calls during road-noise playback compared to ambient-sound playback.One explanation for the change in response is that noise-induced distraction or stress result in maladaptive behaviour. However, further analysis revealed that road-noise playback results in increased vigilance and that mongooses showing the greatest vigilance increase are those that do not subsequently exhibit a flee response to the alarm call. These individuals may therefore be acting appropriately: if the greater gathering of personal information indicates the absence of an actual predator despite an alarm call, the need to undertake costly fleeing behaviour can be avoided. Either way, our study indicates the potential for anthropogenic noise to interfere with the use of acoustic information from other species, and suggests the importance of considering how heterospecific networks are affected by this global pollutant.Capsule: Anthropogenic noise reduces the likelihood of fleeing to a heterospecific alarm call.3

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

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Anthropogenic noise alters dwarf mongoose responses to heterospecific alarm calls

Morris-Drake

Bracken

Kern

et al. 2017

Environmental Pollution

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“…Although a direct comparison between freshly collected 'smart' and 'average' snails has not been made before, response to predators is highly conserved among strains of L. stagnalis (Orr et al, 2009a,b;Dalesman and Lukowiak, 2012). From an evolutionary perspective, it is logical that the ability to form memory surrounding a predator encounter is preserved across strains to promote survival, regardless of cognitive ability (Kotrschal et al, 2013;Simpson et al, 2016). Exposure to KCl elicits the WBWR in snails.…”

Section: Dalesman Andmentioning

confidence: 99%

Strain-specific differences of the effects of stress on memory in Lymnaea

Hughes

Shymansky

Swinton

et al. 2017

Journal of Experimental Biology

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Stress alters the ability to form, recall and maintain memory according to the Yerkes-Dodson/Hebb (YDH) law. The effects of environmentally relevant stressors, such as low environmental calcium and crowding, on learning and memory have previously been described in a laboratory-reared 'average' strain of Lymnaea stagnalis (i.e. the Dutch strain) as well as two strains of freshly collected L. stagnalis with enhanced memory formation abilities (i.e. 'smart' snails). Here, we use L. stagnalis to study the effects of other environmentally relevant stressors on memory formation in two other strains of freshly collected snails, one 'smart' and one 'average'. The stressors we examined are thermal, resource restriction combined with food odour, predator detection and, for the first time, tissue injury (shell damage). We show that the same stressor has significantly different effects on memory formation depending on whether snails are 'smart' or 'average'. Specifically, our data suggest that a stressor or a combination of stressors act to enhance memory in 'average' snails but obstruct memory formation in 'smart' snails. These results are consistent with the YDH law and our hypothesis that 'smart' snails are more easily stressed than 'average' snails.

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“…Studies are now providing experimental evidence that human noise not only stresses animals but that the stress has deleterious demographic consequences. For example, the noise from boat engines in a coral reef lagoon was suffi cient to cause stress in a common reef fi sh and increase its susceptibility to predators such that mortality rates approximately doubled during the process of larval settlement on the reef [23].…”

Section: Some Questions Are New But Some Just Get Hardermentioning

confidence: 99%

Trends and frontiers for the science and management of the oceans

Mumby

2017

Current Biology

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Anthropogenic noise increases fish mortality by predation

Cited by 300 publications

References 31 publications

Anthropogenic noise alters dwarf mongoose responses to heterospecific alarm calls

Anthropogenic noise alters dwarf mongoose responses to heterospecific alarm calls

Strain-specific differences of the effects of stress on memory in Lymnaea

Trends and frontiers for the science and management of the oceans

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