Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and Cognition
Individual variation in the ability to modify previously learned behavior is an important dimension of trait correlations referred to as coping styles, behavioral syndromes or personality. These trait clusters have been shaped by natural selection, and underlying control mechanisms are often conserv...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2017-07-01
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| Series: | Frontiers in Neuroscience |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fnins.2017.00383/full |
| _version_ | 1818319048580005888 |
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| author | Erik Höglund Erik Höglund Patricia I. M. Silva Patricia I. M. Silva Marco A. Vindas Marco A. Vindas Øyvind Øverli |
| author_facet | Erik Höglund Erik Höglund Patricia I. M. Silva Patricia I. M. Silva Marco A. Vindas Marco A. Vindas Øyvind Øverli |
| author_sort | Erik Höglund |
| collection | DOAJ |
| description | Individual variation in the ability to modify previously learned behavior is an important dimension of trait correlations referred to as coping styles, behavioral syndromes or personality. These trait clusters have been shaped by natural selection, and underlying control mechanisms are often conserved throughout vertebrate evolution. In teleost fishes, behavioral flexibility and coping style have been studied in the high (HR) and low-responsive (LR) rainbow trout lines. Generally, proactive LR trout show a behavior guided by previously learned routines, while HR trout show a more flexible behavior relying on environmental cues. In mammals, routine dependent vs. flexible behavior has been connected to variation in limbic dopamine (DA) signaling. Here, we studied the link between limbic DA signaling and individual variation in flexibility in teleost fishes by a reversal learning approach. HR/LR trout were challenged by blocking a learned escape route, previously available during interaction with a large and aggressive conspecific. LR trout performed a higher number of failed escape attempts against the transparent blockage, while HR trout were more able to inhibit the now futile escape impulse. Regionally discrete changes in DA neurochemistry were observed in micro dissected limbic areas of the telencephalon. Most notably, DA utilization in the dorsomedial telencephalon (DM, a suggested amygdala equivalent) remained stable in HR trout in response to reversal learning under acute stress, while increasing from an initially lower level in LR trout. In summary, these results support the view that limbic homologs control individual differences in behavioral flexibility even in non-mammalian vertebrates. |
| first_indexed | 2024-12-13T10:02:55Z |
| format | Article |
| id | doaj.art-feb8b1566a1841669502606664dbb537 |
| institution | Directory Open Access Journal |
| issn | 1662-453X |
| language | English |
| last_indexed | 2024-12-13T10:02:55Z |
| publishDate | 2017-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Neuroscience |
| spelling | doaj.art-feb8b1566a1841669502606664dbb5372022-12-21T23:51:37ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2017-07-011110.3389/fnins.2017.00383268448Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and CognitionErik Höglund0Erik Höglund1Patricia I. M. Silva2Patricia I. M. Silva3Marco A. Vindas4Marco A. Vindas5Øyvind Øverli6Norwegian Institute of Water ResearchOslo, NorwayCentre of Coastal Research, University of AgderKristiansand, NorwayCentro de Ciências do Mar, Universidade do AlgarveFaro, PortugalSection for Aquaculture, Institute for Aquatic Resources, Danish Technical UniversityHirtshals, DenmarkUni Environment, Uni Research ASBergen, NorwayInstitute of Neuroscience and Physiology, Gothenburg University, Sahlgrenska AcademyGothenburg, SwedenDepartment of Food Safety and Infection Biology, Faculty of Veterinary Medicine, Norwegian University of Life SciencesOslo, NorwayIndividual variation in the ability to modify previously learned behavior is an important dimension of trait correlations referred to as coping styles, behavioral syndromes or personality. These trait clusters have been shaped by natural selection, and underlying control mechanisms are often conserved throughout vertebrate evolution. In teleost fishes, behavioral flexibility and coping style have been studied in the high (HR) and low-responsive (LR) rainbow trout lines. Generally, proactive LR trout show a behavior guided by previously learned routines, while HR trout show a more flexible behavior relying on environmental cues. In mammals, routine dependent vs. flexible behavior has been connected to variation in limbic dopamine (DA) signaling. Here, we studied the link between limbic DA signaling and individual variation in flexibility in teleost fishes by a reversal learning approach. HR/LR trout were challenged by blocking a learned escape route, previously available during interaction with a large and aggressive conspecific. LR trout performed a higher number of failed escape attempts against the transparent blockage, while HR trout were more able to inhibit the now futile escape impulse. Regionally discrete changes in DA neurochemistry were observed in micro dissected limbic areas of the telencephalon. Most notably, DA utilization in the dorsomedial telencephalon (DM, a suggested amygdala equivalent) remained stable in HR trout in response to reversal learning under acute stress, while increasing from an initially lower level in LR trout. In summary, these results support the view that limbic homologs control individual differences in behavioral flexibility even in non-mammalian vertebrates.http://journal.frontiersin.org/article/10.3389/fnins.2017.00383/fullpersonalitymonoamineslimbic systemteleostscognitive flexibility |
| spellingShingle | Erik Höglund Erik Höglund Patricia I. M. Silva Patricia I. M. Silva Marco A. Vindas Marco A. Vindas Øyvind Øverli Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and Cognition Frontiers in Neuroscience personality monoamines limbic system teleosts cognitive flexibility |
| title | Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and Cognition |
| title_full | Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and Cognition |
| title_fullStr | Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and Cognition |
| title_full_unstemmed | Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and Cognition |
| title_short | Contrasting Coping Styles Meet the Wall: A Dopamine Driven Dichotomy in Behavior and Cognition |
| title_sort | contrasting coping styles meet the wall a dopamine driven dichotomy in behavior and cognition |
| topic | personality monoamines limbic system teleosts cognitive flexibility |
| url | http://journal.frontiersin.org/article/10.3389/fnins.2017.00383/full |
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