Physical enrichment research for captive fish: Time to focus on the DETAILS

Journal of Fish Biology, Journal Year: 2021, Volume and Issue: 99(3), P. 704 - 725

Published: May 4, 2021

Abstract Growing research effort has shown that physical enrichment (PE) can improve fish welfare and validity. However, the inclusion of PE does not always result in positive effects conflicting findings have highlighted many nuances involved. Effects are known to depend on species life stage tested, but may also vary with differences specific items used as between within studies. Reporting fine‐scale characteristics studies help reveal these factors. We conducted a survey PE‐focused published last 5 years examine current state methodological reporting. The results suggest some aspects adequately detailed. For example, amount dimensions objects were frequently omitted. Similarly, ecological relevance, or other justification, for was made explicit. Focusing ecologically relevant increasing level detail reported benefit future work we propose framework acronym DETAILS ( D imensions, E cological rationale, T iming enrichment, A mount, I nputs, L ighting S ocial environment). outline potential importance each elements this hope it aid reporting standardization across studies, ultimately aiding search more beneficial types development our understanding ability captive promote biologically behaviour.

Language: Английский

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Cellular profiling of a recently-evolved social behavior in cichlid fishes

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

Published: Aug. 14, 2023

Abstract Social behaviors are diverse in nature, but it is unclear how conserved genes, brain regions, and cell populations generate this diversity. Here we investigate bower-building, a recently-evolved social behavior cichlid fishes. We use single nucleus RNA-sequencing 38 individuals to show signatures of recent specific neuronal populations, building-associated rebalancing proportions the putative homolog hippocampal formation. Using comparative genomics across 27 species, trace bower-associated genome evolution subpopulation glia lining dorsal telencephalon. evidence that neural activity departure from quiescence glial together regulate hippocampal-like rebalancing. Our work links behavior-associated genomic variation types their functions, suggests has evolved through changes glia.

Language: Английский

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The genetics of niche-specific behavioral tendencies in an adaptive radiation of cichlid fishes

Science, Journal Year: 2024, Volume and Issue: 384(6694), P. 470 - 475

Published: April 25, 2024

Behavior is critical for animal survival and reproduction, possibly diversification evolutionary radiation. However, the genetics behind adaptive variation in behavior are poorly understood. In this work, we examined a fundamental widespread behavioral trait, exploratory behavior, one of largest radiations on Earth, cichlid fishes Lake Tanganyika. By integrating quantitative data from 57 species (702 wild-caught individuals) with high-resolution ecomorphological genomic information, show that linked to macrohabitat niche adaptations Tanganyikan cichlids. Furthermore, uncovered correlation between genotypes at single-nucleotide polymorphism upstream AMPA glutamate-receptor regulatory gene

Language: Английский

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Bold and bright: shy and supple? The effect of habitat type on personality–cognition covariance in the Aegean wall lizard (Podarcis erhardii)

Animal Cognition, Journal Year: 2022, Volume and Issue: 25(4), P. 745 - 767

Published: Jan. 17, 2022

Language: Английский

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Polygenic sex determination produces modular sex polymorphism in an African cichlid fish

Proceedings of the National Academy of Sciences, Journal Year: 2022, Volume and Issue: 119(14)

Published: March 31, 2022

Significance Sex differences in traits can occur when those are modified by genetic factors inherited on sex chromosomes. We investigated how emerge a species with more than one set of chromosomes, measuring variety morphological, physiological, and behavioral traits. Rather exhibiting sexual dimorphism associated primary sex, the has higher-order polymorphism secondary characteristics or two phenotypic sexes. Variation is modular, involving interplay sex-linked sex-limited Our findings provide implications for determination systems whole-organism fitness coevolve, including that significant creation loss variation diverse during transitions among chromosome systems.

Language: Английский

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Comparison of anxiety-like and social behaviour in medaka and zebrafish

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: June 28, 2022

Abstract The medaka, Oryzias latipes , is rapidly growing in importance as a model behavioural research. However, our knowledge of its behaviour still incomplete. In this study, we analysed the performance medaka 3 tests for anxiety-like (open-field test, scototaxis and diving test) sociability (shoaling test with live stimuli, octagonal mirror modified shoaling stimulus). response was qualitatively similar to that observed other teleosts open-field (thigmotaxis), 2 tests, (attraction towards social remaining did not show typical anxiety (i.e., avoidance light environments preference swimming at bottom aquarium) responses As reference, compared teleost species well-studied behaviour, zebrafish, tested under same conditions. This interspecies comparison indicates several quantitative qualitative differences across all providing further evidence responds differently experimental settings fish models.

Language: Английский

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Differential effects of ethanol on behavior and GABAA receptor expression in adult zebrafish (Danio rerio) with alternative stress coping styles

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: Aug. 4, 2020

Variation in stress responses between individuals are linked to factors ranging from coping styles sensitivity of neurotransmitter systems. Many anxiolytic compounds (e.g. ethanol) can increase stressor engagement through modulation systems and used investigate response mechanisms. There two alternative suites correlated behavioral physiological stressors (stress styles) that differ exploration tendencies: proactive reactive styles. By chronically treating differing style with ethanol, a GABA-acting drug, we assessed the role GABAergic system on response. Specifically, investigated resulting changes stress-related behavior (i.e. exploratory behavior) whole-brain GABAA receptor subunits (gabra1, gabra2, gabrd, & gabrg2) novelty stressor. We found ethanol-treated showed lower behaviors than their counterparts. Proactive significantly higher expression gabra1, gabrg2 compared ethanol treatment resulted upregulation gabra1 both These results suggest impacts vary by select may be one underlying

Language: Английский

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Natural and anthropogenic sources of habitat variation influence exploration behaviour, stress response, and brain morphology in a coastal fish

Journal of Animal Ecology, Journal Year: 2021, Volume and Issue: 90(10), P. 2446 - 2461

Published: June 18, 2021

Evolutionary ecology aims to better understand how ecologically important traits respond environmental heterogeneity. Environments vary both naturally and as a result of human activities, investigations that simultaneously consider natural human-induced variation affect diverse trait types grow increasingly activities drive species endangerment. Here, we examined habitat fragmentation structural complexity disparate in Bahamas mosquitofish Gambusia hubbsi inhabiting tidal creeks. We tested priori predictions for these factors might influence exploratory behaviour, stress reactivity brain anatomy. approximately 350 adult from seven tidal-creek populations across Andros Island, The varied human-caused (three fragmented four unfragmented) (e.g. fivefold rock habitat). Populations had experienced severe fragmentation, thus restriction exchange the ocean, exhibited greater exploration novel environment, stronger physiological responses mildly stressful event smaller telencephala (relative body size). These changes matched adaptive based mostly on (a) reduced chronic predation risk (b) decreased demands navigating tidally dynamic habitats. sites with showed higher propensity relatively larger optic tectum cerebellum. patterns related increased complex environments. Our findings demonstrate variation, including recent anthropogenic impacts (<50 years), can significantly complex, traits. Yet trait-specific may not be easily predicted, found strong support only six 12 predictions. results further highlight utility quantifying multiple factors-for example failed account complexity, would have detected effects behaviours. responses, their ecological consequences, complex: rapid phenotypic facilitate persistence human-altered environments, but come at cost population vulnerability if restoration was occur without consideration altered

Language: Английский

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Npas4a expression in the teleost forebrain is associated with stress coping style differences in fear learning

Scientific Reports, Journal Year: 2021, Volume and Issue: 11(1)

Published: June 8, 2021

Learning to anticipate potentially dangerous contexts is an adaptive behavioral response coping with stressors. An animal's stress style (e.g. proactive-reactive axis) known influence how it encodes salient events. However, the neural and molecular mechanisms underlying these differences in learning are unknown. Further, while a number of neuroplasticity-related genes have been associated alternative styles, unclear if may bias development conditioned responses stressful stimuli, so, which brain regions involved. Here, we trained adult zebrafish associate naturally aversive olfactory cue given context. Next, investigated expression two plasticity neurotransmission-related (npas4a gabbr1a) were contextual fear conditioning between proactive reactive styles. Reactive developed stronger showed significantly higher npas4a medial lateral zones dorsal telencephalon (Dm, Dl), supracommissural nucleus ventral (Vs). Our findings suggest that activity-dependent like be differentially expressed across several interconnected forebrain fearful stimuli promote biases among different

Language: Английский

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Zebrafish (Danio rerio) behavioral phenotypes not underscored by different gut microbiota

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

Published: May 31, 2024

Abstract Different animal behavioral phenotypes maintained and selectively bred over multiple generations may be underscored by dissimilar gut microbial community compositions or not have any significant dissimilarity in composition. Operating within the microbiota-gut-brain axis framework, we anticipated differences microbiome profiles between zebrafish ( Danio rerio ) to display bold shy personality types. This would highlight microbe-mediated effects on host behavior. To this end, amplified sequenced a fragment of 16S rRNA gene from guts individuals (n=10) via Miseq. We uncovered no difference within-group diversity nor between-group composition two phenotypes. Interestingly, though statistically different, determined that phenotype was dominated Burkholderiaceae, Micropepsaceae, Propionibacteriaceae . In contrast, Beijerinckaceae, Pirelullacaeae, Rhizobiales_Incertis_Sedis , Rubinishaeraceae. The absence microbiota suggest species, there might exist stable “core” microbiome, regardless phenotypes, possibly, limited role for modulating selected-for is first study characterize distinct innate (that are considered dysbiotic states) rely antibiotic probiotic treatments induce changes Such studies crucial our understanding impacts normative

Language: Английский

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