Social buffering of oxidative stress and cortisol in an endemic cyprinid fish

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Nov. 23, 2023

Abstract Fish exhibit complex social behaviours that can influence their stress levels and well-being. However, little is known about the link between interactions in wild fish, especially running water environments. While many studies have explored axis most focused on specific contexts, leaving gaps understanding responses to changes. Our study investigated collective behaviour Italian riffle dace ( Telestes muticellus ) a controlled experimental setup simulating natural river system. Results reveal group-living fish lower cortisol oxidative muscle tissue compared solitary counterparts, suggesting calming effect of conspecific presence. Additionally, we observed upregulated expression antioxidant enzymes indicating potential benefits defence systems. These insights shed light dynamic relationship group within habitats emphasise use multidisciplinary approaches.

Language: Английский

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Fine-scale collective movements reveal present, past and future dynamics of a multilevel society in Przewalski’s horses

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Sept. 5, 2023

Studying animal societies needs detailed observation of many individuals, but technological advances offer new opportunities in this field. Here, we present a state-of-the-art drone multilevel herd Przewalski's horses, consisting harems (one-male, multifemale groups). We track, high spatio-temporal resolution, the movements 238 individually identified horses on videos, and combine movement analyses with demographic data from two decades population monitoring. Analysis collective reveals how structure herd's social network is related to kinship familiarity individuals. The centrality their age long harem stallions have kept previously. Harems genetically are closer each other network, female exchange more frequent between harems. High similarity females different predicts becoming mates future. Our results show that only few minutes fine-scale tracking combined throughput driven analysis can reveal society, reconstruct past group dynamics predict future ones.

Language: Английский

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Dynamic colour change in zebrafish ( Danio rerio ) across multiple contexts

Royal Society Open Science, Journal Year: 2025, Volume and Issue: 12(1)

Published: Jan. 1, 2025

Many animals are capable of rapid dynamic colour change, which is particularly well represented in fishes. The proximate mechanisms change fishes understood; however, less attention has been given to understanding its ecological relevance. In this study, we investigate zebrafish ( Danio rerio ) across multiple contexts, using a protocol image the colouration live fish without anaesthesia under standardized conditions. We show that respond different visual environments by darkening their overall dark environment and lightening light environment. This consistent with crypsis through background matching as function change. Additionally, find use increase internal contrast striped patterning presence conspecifics. speculate may social signalling and/or dazzle colouration. no effect predator stimulus on Finally, discuss potential for strategies simultaneously distance-dependent effects, considering typical viewing distances predators.

Language: Английский

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Group personality, rather than acoustic noise, causes variation in group decision-making in guppy shoals

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Abstract Group living has essential fitness benefits for many species. While numerous studies have explored how environmental conditions impact collective movement, their on decisions made in a social context—a central component of group-living—is poorly documented. In this study, we assess acoustic noise impacts group decision-making, cohesion and activity fish shoals, using Trinidadian guppies ( Poecilia reticulata ) as model Movements within radially symmetric five-armed maze were measured high-resolution trajectory data from video-tracking software. The behaviour groups with without continuous white over four-day testing period repeated-measures design. We found no significant change swimming speed or additional noise. However, there was evidence fewer following events (moves into already occupied arms) the treatment compared to control, but had effect leadership attempts empty arms). strong consistent, repeatable differences between all behavioural parameters indicating personality variation at level. Rather than factors, these results provide that consistent group-level dominate behaviour, including shoals.

Language: Английский

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Disruption of collective behaviour correlates with reduced interaction efficiency

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2025, Volume and Issue: 292(2043)

Published: March 1, 2025

Group-living organisms commonly engage in collective behaviour to respond an ever-changing environment. As animals face environmental change, establishing the mechanisms of information used collectively behave is critical. Western honeybees ( Apis mellifera ) are highly social insects that tightly coordinate many individuals ensure optimum colony function. We fanning, a thermoregulatory depends on both and thermal contexts, as case study for behaviour. To identify potential behind coordination we oxytetracycline, antibiotic apiculture known pollutant impairs bee physiology Specifically, hypothesized interactions drive fanning response predicted oxytetracycline would disrupt which will lead reduced response. found longer exposure antibiotics decreases fanning. Using automated tracking, show treatment reduces number interactions, impeding dynamics within these small groups. Our results contribute strong evidence between may honeybees. This work emphasizes importance understanding underlie animal how effects pollutants individual can scale affect populations.

Language: Английский

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Shoaling behaviour in response to turbidity in three‐spined sticklebacks

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(11)

Published: Nov. 1, 2023

Many fresh and coastal waters are becoming increasingly turbid because of human activities, which may disrupt the visually mediated behaviours aquatic organisms. Shoaling fish typically depend on vision to maintain collective behaviour, has a range benefits including protection from predators, enhanced foraging efficiency access mates. Previous studies effects turbidity shoaling behaviour have focussed changes nearest neighbour distance average group-level behaviours. Here, we investigated whether how experimental shoals three-spined sticklebacks (Gasterosteus aculeatus) in clear (<10 Nephelometric Turbidity Units [NTU]) (~35 NTU) conditions differed five local-level individuals (nearest furthest distance, heading difference with neighbour, bearing angle swimming speed). These variables important for emergent properties behaviour. We found an indirect effect distances driven by reduction speed, direct increased variability distances. In contrast, alignment relative position was not significantly altered compared conditions. Overall, our results suggest that were usually robust adverse but group cohesion occasionally lost during periods instability.

Language: Английский

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Emergent Collective Behavior Evolves More Rapidly Than Individual Behavior Among Ant Species

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

Published: March 29, 2024

Abstract Emergence is a fundamental concept in biology and other disciplines, but whether emergent phenotypes evolve similarly to non-emergent unclear. The hypothesized process of evolution posits that evolutionary change collective behavior irreducible the intrinsic behaviors isolated individuals. As result, might more rapidly diversify between populations compared individual behavior. To test if evolves emergently, we conducted large comparative study using 22 ant species gathered over 1,500 behavioral rhythm time series from hundreds colonies individuals, totaling 1.5 years data. We show analogous traits measured at levels exhibit distinct patterns. estimated rates phenotypic for rhythmicity activity were faster than same ants, total variation across was higher hypothesize rapid general feature relative lower-level complex biological systems.

Language: Английский

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The effect of experience on collective decision-making

Behavioural Processes, Journal Year: 2023, Volume and Issue: 213, P. 104962 - 104962

Published: Oct. 30, 2023

Language: Английский

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Ontogenetic Plasticity in Shoaling Behavior in a Forage Fish under Warming

Integrative and Comparative Biology, Journal Year: 2023, Volume and Issue: 63(3), P. 730 - 741

Published: May 27, 2023

Shoaling behavior is known to increase survival rates during attacks from predators, minimize foraging time, favor mating, and potentially locomotor efficiency. The onset of shoaling typically occurs the larval phase, but it unclear how may improve across ontogenetic stages in forage fishes. Warming metabolic locomotion solitary fish, species adjust their collective offset elevated costs swimming at higher temperatures. In this study, we quantified effects warming on performance ontogeny a small zebrafish (Danio rerio) different speeds. Shoals larval, juvenile, adult were acclimated two temperatures (28°C 32°C), prior following nonexhaustive exercise high speed. five individuals filmed flow tank analyze kinematics movement. We found that larvae juveniles adults. particular, shoals become more cohesive, both tail beat frequency (TBF) head-to-tail amplitude decrease with ontogeny. Early life have thermal sensitivity TBF especially speeds, when compared Our study shows as shift juvenile stages.

Language: Английский

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“The song remains the same”: not really! Vocal flexibility in the song of the indris

Animal Cognition, Journal Year: 2023, Volume and Issue: 26(6), P. 2009 - 2021

Published: Oct. 4, 2023

Abstract In studying communicative signals, we can think of flexibility as a necessary correlate creativity. Flexibility enables animals to find practical solutions and appropriate behaviors in mutable situations. this study, aimed quantify the degree songs indris ( Indri indri ), only singing lemur, using three different metrics: Jaro Distance, normalized diversity, entropy. We hypothesized that co-variation together would vary according their status sex. found dominant females were more flexible than males when concatenating elements into strings (element concatenation). The number song contribution by length (contribution diversity) individuals positively co-varied for seven duetting pairs. Non-dominant variable element concatenation individuals, they diverse phrase type females. Independently from sex status, individual contributions did not differ entropy (a measure predictability contributions). These results corroborate previous findings regarding dimorphism songs. Thus, shed light on presence expression behavior non-human primate species. Indeed, potentially show an effect social features shaping vocal flexibility, which underlies many communication systems, including human language. speculate may account

Language: Английский

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