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Luchiari AC, Maximino C. Fish personality: meta-theoretical issues, personality dimensions, and applications to neuroscience and psychopathology. PERSONALITY NEUROSCIENCE 2023; 6:e9. [PMID: 38107778 PMCID: PMC10725779 DOI: 10.1017/pen.2023.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/30/2023] [Accepted: 05/09/2023] [Indexed: 12/19/2023]
Abstract
While the field of personality neuroscience has extensively focused on humans and, in a few cases, primates and rodents, a wide range of research on fish personality has emerged in the last decades. This research is focused mainly on the ecological and evolutionary causes of individual differences and also aimed less extensively at proximal mechanisms (e.g., neurochemistry or genetics). We argue that, if consistent and intentional work is made to solve some of the meta-theoretical issues of personality research both on fish and mammals, fish personality research can lead to important advances in personality neuroscience as a whole. The five dimensions of personality in fish (shyness-boldness, exploration-avoidance, activity, aggressiveness, and sociability) need to be translated into models that explicitly recognize the impacts of personality in psychopathology, synergizing research on fish as model organisms in experimental psychopathology, personality neuroscience, and ecological-ethological approaches to the evolutionary underpinnings of personality to produce a powerful framework to understand individual differences.
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Affiliation(s)
- Ana Carolina Luchiari
- Department of Physiology & Behavior, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - Caio Maximino
- Laboratório de Neurociências e Comportamento, Instituto de Estudos em Saúde e Biológicas, Universidade Federal do Sul e Sudeste do Pará, Marabá, Brazil
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2
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Miczek KA, DiLeo A, Newman EL, Akdilek N, Covington HE. Neurobiological Bases of Alcohol Consumption After Social Stress. Curr Top Behav Neurosci 2022; 54:245-281. [PMID: 34964935 PMCID: PMC9698769 DOI: 10.1007/7854_2021_273] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The urge to seek and consume excessive alcohol is intensified by prior experiences with social stress, and this cascade can be modeled under systematically controlled laboratory conditions in rodents and non-human primates. Adaptive coping with intermittent episodes of social defeat stress often transitions to maladaptive responses to traumatic continuous stress, and alcohol consumption may become part of coping responses. At the circuit level, the neural pathways subserving stress coping intersect with those for alcohol consumption. Increasingly discrete regions and connections within the prefrontal cortex, the ventral and dorsal striatum, thalamic and hypothalamic nuclei, tegmental areas as well as brain stem structures begin to be identified as critical for reacting to and coping with social stress while seeking and consuming alcohol. Several candidate molecules that modulate signals within these neural connections have been targeted in order to reduce excessive drinking and relapse. In spite of some early clinical failures, neuropeptides such as CRF, opioids, or oxytocin continue to be examined for their role in attenuating stress-escalated drinking. Recent work has focused on neural sites of action for peptides and steroids, most likely in neuroinflammatory processes as a result of interactive effects of episodic social stress and excessive alcohol seeking and drinking.
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Affiliation(s)
- Klaus A. Miczek
- Department of Psychology, Tufts University, Medford, MA, USA,Department of Neuroscience, Tufts University, Boston, MA, USA
| | - Alyssa DiLeo
- Department of Neuroscience, Tufts University, Boston, MA, USA
| | - Emily L. Newman
- Department of Psychiatry, Harvard Medical School, Belmont, MA, USA
| | - Naz Akdilek
- Department of Psychology, Tufts University, Medford, MA, USA
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3
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Souza TP, Franscescon F, Stefanello FV, Müller TE, Santos LW, Rosemberg DB. Acute effects of ethanol on behavioral responses of male and female zebrafish in the open field test with the influence of a non-familiar object. Behav Processes 2021; 191:104474. [PMID: 34371127 DOI: 10.1016/j.beproc.2021.104474] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/30/2021] [Accepted: 08/04/2021] [Indexed: 12/26/2022]
Abstract
In this report, we investigate whether the acute effects of different ethanol (EtOH) concentrations are sex-dependent in zebrafish subjected to the open field test (OFT) with the influence of a non-familiar object. Male and female zebrafish were separated into four groups and exposed to EtOH (0%, 0.25%, 0.5%, or 1.0% v/v) for 1 h. Fish were tested individually in the OFT, in which tank was divided into three areas: periphery, intermediate, and center area. An object (black sphere; diameter: 1 cm) was placed in the center of the tank and behaviors were recorded for 5 min. At the baseline, females had a distinct exploratory activity and interaction pattern with the object, reflecting a more anxious and shyer behavior in relation to males. Females exposed to 0.5% EtOH performed more rapid investigation to the object than males, while 1.0% EtOH reduced locomotion in both sexes and increased immobility only in males. Principal component analyses revealed that anxiety-like behaviors, exploratory activity, and locomotion were the components that most accounted for total variances. Collectively, our novel findings show the existence of a sex-dependent effect in the zebrafish models acutely exposed to EtOH tested in the OFT with a non-familiar object.
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Affiliation(s)
- Thiele P Souza
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Francini Franscescon
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Flavia V Stefanello
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Talise E Müller
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Laura W Santos
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA, 70458, USA.
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4
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Daniel DK, Bhat A. Bolder and Brighter? Exploring Correlations Between Personality and Cognitive Abilities Among Individuals Within a Population of Wild Zebrafish, Danio rerio. Front Behav Neurosci 2020; 14:138. [PMID: 32903664 PMCID: PMC7438763 DOI: 10.3389/fnbeh.2020.00138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/16/2020] [Indexed: 12/17/2022] Open
Abstract
Within populations, individual differences in behavioral and cognitive traits are dependent on the habitat and specific contexts, such as the presence of a predator or other risks. The ability to show variable responses to changing conditions can be of immense survival advantage to organisms. We studied individual differences in specific personality traits, such as boldness, exploration, and spatial ability, and the effect of these traits on learning ability and memory in the presence of a predatory threat, among wild caught zebrafish (Danio rerio). Under laboratory conditions, individuals were trained to perform a simple navigation task, and their performance, exploration, boldness traits were measured, along with learning and memory abilities under two contexts (i.e., in the presence and absence of a predator). Our results revealed that fish showed a clear decline in emergence time, exploration time, and feeding latency over trials, indicative of learning, and further tests for memory also showed memory retention. While the presence of a predator increased emergence time and latencies for navigating, indicating declines in boldness and exploration, these were found to be correlated to different personalities among the individuals and dependent on their sex. While females tended to be bolder and learned the spatial task faster, they showed lower memory retention abilities than males. Personality traits were also found to affect cognitive abilities among individuals. In general, the presence of a predator decreased performance latencies. However, bolder individuals were less affected and emerged more quickly from the refuge chamber than shy individuals. Our results point to the complex interplay of ecological context along with inherent correlations across personality traits that decide the overall personality and cognitive responses among individuals even within populations. These findings thus highlight the importance of an inclusive approach that combines personality and cognition studies for understanding variations within populations.
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Affiliation(s)
- Danita K Daniel
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Kolkata, India
| | - Anuradha Bhat
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Kolkata, India
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5
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Mustafa A, Roman E, Winberg S. Boldness in Male and Female Zebrafish ( Danio rerio) Is Dependent on Strain and Test. Front Behav Neurosci 2019; 13:248. [PMID: 31803030 PMCID: PMC6877474 DOI: 10.3389/fnbeh.2019.00248] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 10/10/2019] [Indexed: 12/14/2022] Open
Abstract
Differences in selection pressure in nature and labs have profound effects on zebrafish strains. The widely used AB strain of zebrafish has been domesticated over several decades. Recently, there has been an upsurge in the availability of genetically modified lines, e.g., the spiegeldanio (spd), which has a mutation in the fibroblast growth factor receptor 1a (fgfr1a) gene. This mutant strain (fgfr1a) has previously been reported to be bolder than fish of the Tübingen strain, from which it was generated. Our knowledge on behavioral differences between different zebrafish strains, relative to wild-caught zebrafish, is limited. In the present study we compare behaviors related to interpretation of boldness in male and female offspring (F1) of wild-caught fish, AB and fgfr1a -/- zebrafish. A second aim of the study was to compare the behavior of fish from these strains when tested in different behavioral assays, i.e., shelter seeking, novel tank diving and scototaxis tests. The results demonstrate that behavioral variation exists both within and between the strains, but interpretation of boldness reveals a complex pattern in which behavior differs between strains but is also related to sex and test. Therefore, a careful assessment of various strains of fish using both males and females is warranted in order to strengthen interpretation of results. This is especially important in studies where zebrafish are used as model organisms for human conditions as well as studies evaluating the effects of pharmacological or toxicological substances on behavior.
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Affiliation(s)
- Arshi Mustafa
- Department of Neuroscience, Behavioral Neuroendocrinology Group, Uppsala University, Uppsala, Sweden.,Department of Organismal Biology, Uppsala University, Uppsala, Sweden
| | - Erika Roman
- Department of Pharmaceutical Biosciences, Division of Pharmacology, Neuropharmacology, Addiction and Behavior Unit, Uppsala University, Uppsala, Sweden.,Department of Anatomy, Physiology and Biochemistry, Division of Anatomy and Physiology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Svante Winberg
- Department of Neuroscience, Behavioral Neuroendocrinology Group, Uppsala University, Uppsala, Sweden
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6
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Abreu MS, Maximino C, Banha F, Anastácio PM, Demin KA, Kalueff AV, Soares MC. Emotional behavior in aquatic organisms? Lessons from crayfish and zebrafish. J Neurosci Res 2019; 98:764-779. [DOI: 10.1002/jnr.24550] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 09/24/2019] [Accepted: 10/15/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Murilo S. Abreu
- Bioscience Institute University of Passo Fundo (UPF) Passo Fundo Brazil
- The International Zebrafish Neuroscience Research Consortium (ZNRC) Slidell LA USA
| | - Caio Maximino
- The International Zebrafish Neuroscience Research Consortium (ZNRC) Slidell LA USA
- Institute of Health and Biological Studies Federal University of Southern and Southeastern Pará, Unidade III Marabá Brazil
| | - Filipe Banha
- Department of Landscape, Environment and Planning MARE – Marine and Environmental Sciences Centre University of Évora Évora Portugal
| | - Pedro M. Anastácio
- Department of Landscape, Environment and Planning MARE – Marine and Environmental Sciences Centre University of Évora Évora Portugal
| | - Konstantin A. Demin
- Institute of Experimental Medicine Almazov National Medical Research Center Ministry of Healthcare of Russian Federation St. Petersburg Russia
- Institute of Translational Biomedicine St. Petersburg State University St. Petersburg Russia
| | - Allan V. Kalueff
- School of Pharmacy Southwest University Chongqing China
- Ural Federal University Ekaterinburg Russia
| | - Marta C. Soares
- CIBIO, Research Centre in Biodiversity and Genetic Resources University of Porto Porto Portugal
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7
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Ivy CM, Robertson CE, Bernier NJ. Acute embryonic anoxia exposure favours the development of a dominant and aggressive phenotype in adult zebrafish. Proc Biol Sci 2018; 284:rspb.2016.1868. [PMID: 28077765 DOI: 10.1098/rspb.2016.1868] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 12/05/2016] [Indexed: 12/23/2022] Open
Abstract
Eutrophication and climate change are increasing the incidence of severe hypoxia in fish nursery habitats, yet the programming effects of hypoxia on stress responsiveness in later life are poorly understood. In this study, to investigate whether early hypoxia alters the developmental trajectory of the stress response, zebrafish embryos were exposed to 4 h of anoxia at 36 h post-fertilization and reared to adults when the responses to secondary stressors were assessed. While embryonic anoxia did not affect basal cortisol levels or the cortisol response to hypoxia in later life, it had a marked effect on the responses to a social stressor. In dyadic social interactions, adults derived from embryonic anoxia initiated more chases, bit more often, entered fewer freezes and had lower cortisol levels. Adults derived from embryonic anoxia also performed more bites towards their mirror image, had lower gonadal aromatase gene expression and had higher testosterone levels. We conclude that acute embryonic anoxia has long-lasting consequences for the hormonal and behavioural responses to social interactions in zebrafish. Specifically, we demonstrate that acute embryonic anoxia favours the development of a dominant and aggressive phenotype, and that a disruption in sex steroid production may contribute to the programming effects of environmental hypoxia.
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Affiliation(s)
- Catherine M Ivy
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
| | - Cayleih E Robertson
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
| | - Nicholas J Bernier
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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8
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Amin B, Slabbekoorn H, Schaaf M, Tudorache C. “Early birds” take it easy: diurnal timing is correlated with overall level in activity of zebrafish larvae. BEHAVIOUR 2016. [DOI: 10.1163/1568539x-00003376] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Individual animals show consistent differences in behavioural responses when coping with environmental challenges. Consistency over time and across context in a behavioural trait is an indication for animal personality. Chronotypes refer to consistent inter-individual differences in diurnal rhythmicity driven by underlying variation in circadian clock processes. Personality traits and chronotype may relate to a single behavioural syndrome, but few studies have investigated such a link explicitly. Here, we explored zebrafish larvae for the presence of consistency in activity levels and timing, and their correlation with and without external cues (Zeitgeber: light–dark cycle versus constant light). We found individual consistency in activity level and timing, and their correlation independent of the presence of Zeitgeber: early-active individuals were less active overall than late-active individuals. Our study suggests a link between personality and chronotype and provides new insights into the early development of individual variation in behavioural tendencies of zebrafish.
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Affiliation(s)
- Bawan Amin
- Institute Biology Leiden, Sylvius Laboratory, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Hans Slabbekoorn
- Institute Biology Leiden, Sylvius Laboratory, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Marcel Schaaf
- Institute Biology Leiden, Sylvius Laboratory, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Christian Tudorache
- Institute Biology Leiden, Sylvius Laboratory, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
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9
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Moss S, Tittaferrante S, Way GP, Fuller A, Sullivan N, Ruhl N, McRobert SP. Interactions between aggression, boldness and shoaling within a brood of convict cichlids (Amatitlania nigrofasciatus). Behav Processes 2015; 121:63-9. [DOI: 10.1016/j.beproc.2015.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 10/12/2015] [Accepted: 10/15/2015] [Indexed: 01/22/2023]
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10
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Wang MY, Brennan CH, Lachlan RF, Chittka L. Speed–accuracy trade-offs and individually consistent decision making by individuals and dyads of zebrafish in a colour discrimination task. Anim Behav 2015. [DOI: 10.1016/j.anbehav.2015.01.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Ólafsdóttir GÁ, Andreou A, Magellan K, Kristjánsson BK. Divergence in social foraging among morphs of the three-spined stickleback, Gasterosteus aculeatus. Biol J Linn Soc Lond 2014. [DOI: 10.1111/bij.12320] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Alexandreou Andreou
- Research Centre of the Westfjords; University of Iceland; Adalstraeti 21 Bolungarvik IS415 Iceland
| | - Kit Magellan
- Institut d'Ecologia Aquàtica; Universitat de Girona; E-17071 Girona España
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12
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Personality, foraging and fitness consequences in a long lived seabird. PLoS One 2014; 9:e87269. [PMID: 24504180 PMCID: PMC3913606 DOI: 10.1371/journal.pone.0087269] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 12/25/2013] [Indexed: 12/19/2022] Open
Abstract
While personality differences in animals are defined as consistent behavioural variation between individuals, the widely studied field of foraging specialisation in marine vertebrates has rarely been addressed within this framework. However there is much overlap between the two fields, both aiming to measure the causes and consequences of consistent individual behaviour. Here for the first time we use both a classic measure of personality, the response to a novel object, and an estimate of foraging strategy, derived from GPS data, to examine individual personality differences in black browed albatross and their consequences for fitness. First, we examine the repeatability of personality scores and link these to variation in foraging habitat. Bolder individuals forage nearer the colony, in shallower regions, whereas shyer birds travel further from the colony, and fed in deeper oceanic waters. Interestingly, neither personality score predicted a bird's overlap with fisheries. Second, we show that both personality scores are correlated with fitness consequences, dependent on sex and year quality. Our data suggest that shyer males and bolder females have higher fitness, but the strength of this relationship depends on year quality. Females who forage further from the colony have higher breeding success in poor quality years, whereas males foraging close to the colony always have higher fitness. Together these results highlight the potential importance of personality variation in seabirds and that the fitness consequences of boldness and foraging strategy may be highly sex dependent.
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13
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Tudorache C, Schaaf MJM, Slabbekoorn H. Covariation between behaviour and physiology indicators of coping style in zebrafish (Danio rerio). J Endocrinol 2013; 219:251-8. [PMID: 24198397 DOI: 10.1530/joe-13-0225] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
All vertebrates exhibit physiological responses to a wide variety of stressors. The amplitude and profile of the response depend on the intensity, duration, controllability and predictability of the stressor, but there is also individual variation in the response, termed coping style. A better understanding of the expression of coping styles is of great value for medical applications, animal welfare issues and conservation. Here, we investigated the effect of repeated netting stress on proactive and reactive zebrafish (Danio rerio) as an upcoming model system for stress research. Fish were separated by coping styles according to the order of entering a novel environment. Subsequently, repeated netting stress was applied as stressor, over a period of 21 days. Full-body cortisol levels were determined at 0, 15, 30, 60 and 120 min after the last repeated stress event. Our results show that reactive fish display i) increased basal cortisol concentrations after being repeatedly stressed, ii) higher cortisol secretion over time and iii) slow recovery of cortisol concentration towards basal levels after the last repeated stress event. This study shows for the first time in zebrafish that different coping styles are associated with different cortisol responses during the recovery from stress over time and that coping styles can explain otherwise unaccounted variation in physiological stress responses.
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MESH Headings
- Allostasis
- Animals
- Behavior, Animal
- Brain/growth & development
- Brain/metabolism
- Disease Models, Animal
- Disease Susceptibility
- Female
- Gene Expression Regulation, Developmental
- Hydrocortisone/metabolism
- Male
- Nerve Tissue Proteins/biosynthesis
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Neurons/metabolism
- RNA, Messenger/metabolism
- Receptors, Glucocorticoid/biosynthesis
- Receptors, Glucocorticoid/genetics
- Receptors, Glucocorticoid/metabolism
- Receptors, Mineralocorticoid/biosynthesis
- Receptors, Mineralocorticoid/genetics
- Receptors, Mineralocorticoid/metabolism
- Stress, Physiological
- Stress, Psychological/metabolism
- Zebrafish/growth & development
- Zebrafish/physiology
- Zebrafish Proteins/biosynthesis
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
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Affiliation(s)
- Christian Tudorache
- Departments of Molecular Cell Biology Behavioral Biology, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
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14
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Maximino C, Puty B, Matos Oliveira KR, Herculano AM. Behavioral and neurochemical changes in the zebrafish leopard strain. GENES BRAIN AND BEHAVIOR 2013; 12:576-82. [PMID: 23679663 DOI: 10.1111/gbb.12047] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 04/15/2013] [Accepted: 05/09/2013] [Indexed: 11/27/2022]
Abstract
The zebrafish leopard phenotype (leo) displays abnormal pigmentation and shows increased anxiety-like behavior. The neurochemical changes associated with this anxious phenotype are not known. Here, we demonstrate that leo show increased anxiety-like behavior in the light/dark box and in the novel tank test. This anxious phenotype is rescued by acute treatment with a dose of a serotonin reuptake inhibitor, fluoxetine, that is inactive in wild-type animals. Moreover, leo show decreased tissue levels of serotonin, increased serotonin turnover and slightly increased monoamine oxidase activity. These results suggest that the anxious phenotype observed in leo zebrafish is caused by a decrease in serotonin uptake. This work could open an important avenue in defining the neurochemical underpinning of natural variation in anxiety disorders.
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Affiliation(s)
- C Maximino
- Departamento de Morfologia e Ciências Fisiolígicas, Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Pará, Av. Hiléia Agrópolis do INCRA s/n, 68503-120 Marabá, Brazil
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