The combined effects of elevated predation risk and anthropogenic noise on dwarf mongoose vigilance behaviour

Biology Letters, Journal Year: 2025, Volume and Issue: 21(2)

Published: Feb. 1, 2025

Anthropogenic noise is a pervasive pollutant in the world’s ecosystems, with numerous studies demonstrating negative physiological, developmental and behavioural impacts across taxa. However, research has tended to focus on anthropogenic isolation; many species often experience this conjunction other natural stressors. Here, we used field experiment investigate combined effects of sequential elevation perceived predation risk followed by exposure road vigilance behaviour dwarf mongooses ( Helogale parvula ). As expected, both alarm-call playback (simulating greater risk) road-noise independently led more compared close-call ambient-sound (control) playbacks, respectively. The two stressors had an equivalent effect total vigilance, lending support risk-disturbance hypothesis. combination did not, however, generate significantly different amount alone. Thus, our provides further evidence that can influence vigilance–foraging trade-off but no indication additive or synergistic when stressor elevated risk. Further investigation combined-stressor critical if are understand true disturbances communities.

Language: Английский

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Impacts of predation risk on learning and memory of free-living mice

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2025, Volume and Issue: 292(2041)

Published: Feb. 1, 2025

In predator–prey interactions, responses to predation risk typically involve behavioural, morphological or physiological changes. Laboratory-based studies have also shown changes in prey cognition (i.e. learning and memory), with individuals often showing impairment. However, an ecological perspective predicts that wild animals should conserve their cognitive ability, given many require robust cognition. Here, we simulated used a field-adapted version of the Morris Water Maze (MWM) investigate how chronic affects white-footed mice ( Peromyscus leucopus ). We found 24 days' exposure did not impair learning. those exposed had 25% reduction short-term memory. Twelve days post-risk exposure, no performance differences between risk-exposed control mice. Additionally, displayed greater exploration higher probability completing MWM initial trial. Given integrate multiple pieces information shape behaviour, lack impairment altered strategies may help respond risk. tendency memory suggests there are consequences for when experiencing increased

Language: Английский

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Interspecific interactions disrupted by roads

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: 99(3), P. 1121 - 1139

Published: Feb. 1, 2024

Roads have pervasive impacts on wildlife, including habitat loss and fragmentation, road mortality, pollution increased human use of habitats surrounding them. However, the effects roads interspecific interactions are less understood. Here we provide a synthesis existing literature how species may be disrupted by roads, identify knowledge gaps, suggest avenues for future research conservation management. We conducted systematic search using Web Science database each interaction (predation, competition, mutualism, parasitism, commensalism amensalism). These searches yielded 2144 articles, which 195 were relevant to our topic. Most these studies focused predation (50%) or competition (24%), frequently mutualism (17%) or, parasitism (9%). found no amensalism. Studies biased towards mammals from high-income countries, with most in USA (34%) Canada (18%). Our review identified several patterns. First, disrupt predator-prey relationships, usually negative prey populations. Second, new disturbed created corridors often benefit more competitive species, such as invasive although some native endangered can also thrive there. Third, degrade mutualistic like seed dispersal pollination. Fourth, increase rates, intensity alteration is specific. To reduce interactions, following management actions: (i) verges should wide heterogenous possible, this increases microhabitat diversity, thus enhancing ecosystem services pollination dispersal; (ii) combining different mowing regimes complexity corridor, enabling it act species; (iii) de-icing salts gradually reduced replaced harmful products maintenance practices; (iv) wildlife passes implemented groups animal concentrations inside them; (v) periodic removal carcasses resource wildlife; (vi) implementation traffic-calming schemes could enhance avoid disruption relationships.

Language: Английский

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The effects of aerator noise on the swimming, feeding, and growth of Micropterus salmoides

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: Oct. 5, 2023

Aquaculture systems, replete with equipment noise originating from aerators, pumps, feeders, and filtration are known to exert substantial influence on fish behavior growth. In this research, the focus was directed towards comprehending impacts of aerator swimming, feeding, growth progression largemouth bass. course a 50-day experimental period, bass population segmented into two groups: (90.3dB re μPa RMS -1 ) ambient (70.4dB ). The findings indicated discernible disparities in swimming feeding between groups. Specifically, group maintained greater average angular distance physical separation their nearest counterparts than group, which were 43.61 ± 1.89° 85.47 1.72mm for 48.32 0.49° 97.01 0.57mm group. Furthermore, kinetic energy markedly lower as compared For first time, Shannon-Wiener diversity index leveraged gauge behavior, results signifying 2.69 0.07 higher that 2.51 0.02. Lastly, demonstrated compromised performance, significantly weight opposed along marked variations specific rate. These offer telling revelation about profound behavioral bass, thereby forming valuable referential base future research centered effects pollution aquatic organisms.

Language: Английский

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Effects of noise from oil and gas development on ungulates and small mammals—A science synthesis to inform National Environmental Policy Act analyses

Scientific investigations report, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

Language: Английский

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Noise interfere on feeding behaviour but not on food preference of saffron finches (Sicalis flaveola)

Behavioural Processes, Journal Year: 2023, Volume and Issue: 206, P. 104844 - 104844

Published: Feb. 9, 2023

Language: Английский

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The impact of food availability on risk-induced trait responses in prey

Behavioral Ecology, Journal Year: 2023, Volume and Issue: 34(6), P. 1036 - 1042

Published: Sept. 23, 2023

Abstract Prey respond to predation risk by altering their morphology, physiology, and behavior, responses that may come at a cost prey foraging growth. However, perception of depend upon the environmental context in which interaction occurs. Here, we examined how food availability influenced prey’s nonlethal but free-ranging predator. We used an experimental mesocosm set-up intertidal system green crab (Carcinus maenas) predators dogwhelk snail (Nucella lapillus) prey, with blue mussels as basal resource. measured individual Nucella risk-aversion behavior (summed value habitat use) growth throughout 28-day experiment. found when were exposed risk, they had greater was available compared not. also increased over time all treatments individuals always behavior. significantly more provided without. In food, snails reduced those not risk. without no effect on Our results support hypothesis resource increases costs avoidance, thus magnifies risk-induced non-consumptive effects. They provide insights into context-based effects prioritize safety versus depending perceived availability, responding.

Language: Английский

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Vibrations and Implications on Arctic Lifeforms

Published: Jan. 1, 2024

Language: Английский

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The double-edged sword of urban life: Invasive grey squirrels perceive foraging as safer close to roads under noisier conditions, yet riskier when noise is inconsistent

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: June 1, 2024

Abstract Mortality risk influences decisions of foraging animals such that and feeding behaviours are usually biased towards habitats where benefits outweigh risks. Human activity associated disturbance thought to be perceived as a source analogous predation in wildlife. As such, can alter behaviour habitat use animals. Urban wildlife faces increased exposure human disturbance, meaning they may face an increase during food acquisition. also include novel altered resources could result urban having distinct trade-offs with patch compared rural counterparts. To examine how relatively successful invasive mammal, the eastern grey squirrel, balances safety under we measured giving-up densities (GUD) at artificial patches placed sites subject varying levels urbanisation investigate features might influence decisions. We found differences GUDs between ‘safe’ risky’ were reduced closer roads only noisy conditions, suggesting is by squirrels when from activities highest. However, there was significant effect variability noise on patterns exploitation, higher larger GUD safe risky more variable levels, find dynamic disturbances startling or distracting while foraging. Synthesis: Our results show have doubled-edged impacts landscape fear through offering predators whilst increasing costs via disturbance. Future research consider vary according supply shed further light made levels.

Language: Английский

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Anthropogenic noise decreases activity and calling behavior in wild mice

PeerJ, Journal Year: 2023, Volume and Issue: 11, P. e15297 - e15297

Published: June 14, 2023

Background Animals rely on sound to mediate a myriad of daily activities, and anthropogenic noise is pollutant that alters the natural soundscape within which they are active. As human infrastructure expands, broadband increases, can affect behaviors free-living nocturnal animals. Mice animals produce ultrasonic calls as part their behavioral repertoire. Methods We assessed effects wild deer mice (Peromyscus maniculatus) woodland jumping (Napaeozapus insignis), two species calls. measured activity, foraging behavior at tray, calling broadcasts noise, compared baseline with no broadcasting, 25 focal areas in Southern Appalachian Mountain Range North Carolina, USA. Results Deer exposed spent less time broadcasted noise. took longer begin presence left fewer husks but consumed same number seeds were likely than be first enter area approach food when Both produced few level calling. present recorded from mice. Conclusion Anthropogenic affects behavior, Natural also Mouse respond differently appearing more sensitive Responses could have important ecology these differently. Species differences should considered mitigating conservation ecology.

Language: Английский

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