Feeding motivation as a personality trait in Nile tilapia (Oreochromis niloticus): role of serotonergic neurotransmission
Consistent individual variation in behaviour and physiology (i.e. animal personality or coping style) has emerged as a central topic in many biological disciplines. Yet, underlying mechanisms of crucial personality traits like feeding behaviour in novel environments remain unclear. Comparative studi...
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| Veröffentlicht in: | Fish physiology and biochemistry 2014-10, Vol.40 (5), p.1547-1557 |
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| creator | Silva, Patricia I. M Martins, Catarina I. M Höglund, Erik Gjøen, Hans Magnus Øverli, Øyvind |
| description | Consistent individual variation in behaviour and physiology (i.e. animal personality or coping style) has emerged as a central topic in many biological disciplines. Yet, underlying mechanisms of crucial personality traits like feeding behaviour in novel environments remain unclear. Comparative studies, however, reveal a strong degree of evolutionary conservation of neural mechanisms controlling such behaviours throughout the vertebrate lineage. Previous studies have indicated duration of stress-induced anorexia as a consistent individual characteristic in teleost fishes. This study aims to determine to what degree brain 5-hydroxytryptamine (5-HT, serotonin) activity pertains to this aspect of animal personality, as a correlate to feed anticipatory behaviour and recovery of feed intake after transfer to a novel environment. Crucial to the definition of animal personality, a strong degree of individual consistency in different measures of feeding behaviour (feeding latency and feeding score), was demonstrated. Furthermore, low serotonergic activity in the hypothalamus was highly correlated with a personality characterized by high feeding motivation, with feeding motivation represented as an overall measure incorporating several behavioural parameters in a Principle Component Analyses (PCA). This study thus confirms individual variation in brain 5-HT neurotransmission as a correlate to complex behavioural syndromes related to feeding motivation. |
| doi_str_mv | 10.1007/s10695-014-9947-2 |
| format | Article |
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This study aims to determine to what degree brain 5-hydroxytryptamine (5-HT, serotonin) activity pertains to this aspect of animal personality, as a correlate to feed anticipatory behaviour and recovery of feed intake after transfer to a novel environment. Crucial to the definition of animal personality, a strong degree of individual consistency in different measures of feeding behaviour (feeding latency and feeding score), was demonstrated. Furthermore, low serotonergic activity in the hypothalamus was highly correlated with a personality characterized by high feeding motivation, with feeding motivation represented as an overall measure incorporating several behavioural parameters in a Principle Component Analyses (PCA). 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Previous studies have indicated duration of stress-induced anorexia as a consistent individual characteristic in teleost fishes. This study aims to determine to what degree brain 5-hydroxytryptamine (5-HT, serotonin) activity pertains to this aspect of animal personality, as a correlate to feed anticipatory behaviour and recovery of feed intake after transfer to a novel environment. Crucial to the definition of animal personality, a strong degree of individual consistency in different measures of feeding behaviour (feeding latency and feeding score), was demonstrated. Furthermore, low serotonergic activity in the hypothalamus was highly correlated with a personality characterized by high feeding motivation, with feeding motivation represented as an overall measure incorporating several behavioural parameters in a Principle Component Analyses (PCA). This study thus confirms individual variation in brain 5-HT neurotransmission as a correlate to complex behavioural syndromes related to feeding motivation.</description><subject>Animal Anatomy</subject><subject>Animal Biochemistry</subject><subject>Animal Physiology</subject><subject>Animals</subject><subject>anorexia</subject><subject>Behavior</subject><subject>Biomedical and Life Sciences</subject><subject>Brackish</subject><subject>Brain research</subject><subject>Chromatography, High Pressure Liquid - veterinary</subject><subject>Cichlids - physiology</subject><subject>Comparative studies</subject><subject>Eating disorders</subject><subject>Environment</subject><subject>feed intake</subject><subject>Feeding behavior</subject><subject>Feeding Behavior - physiology</subject><subject>Feeds</subject><subject>fish</subject><subject>Freshwater & Marine Ecology</subject><subject>Histology</subject><subject>hypothalamus</subject><subject>Hypothalamus - metabolism</subject><subject>Life Sciences</subject><subject>Morphology</subject><subject>motivation</subject><subject>Motivation - physiology</subject><subject>Observation</subject><subject>Oreochromis niloticus</subject><subject>Personality</subject><subject>Personality - physiology</subject><subject>Personality traits</subject><subject>Physiology</subject><subject>Principal Component Analysis</subject><subject>Serotonin</subject><subject>Serotonin - metabolism</subject><subject>Synaptic Transmission - physiology</subject><subject>Teleostei</subject><subject>Tilapia</subject><subject>Zoology</subject><issn>0920-1742</issn><issn>1573-5168</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqNkU9v1DAQxS0EokvhA3ABS1zKITBjx3_CDVUUkCp6gJ4tJ5ksrrLxYieV9tvjbQpCHBCnkTW_98Z6j7HnCG8QwLzNCLpRFWBdNU1tKvGAbVAZWSnU9iHbQCOgQlOLE_Yk5xsAaIzGx-xE1FZZIe2GHS6I-jBt-S7O4dbPIU7cZ-75nlKOkx_DfOBz8mHmYeJfwkh8DqPfB8_PrhLF7nuKu5D5FMZi0C359TueYqHiwDOlOMeJ0jZ0fKKlvJKfcsFzOfOUPRr8mOnZ_Txl1xcfvp1_qi6vPn4-f39ZdUrYuapRC62trjUMZDrpfWuoAdV31qLXfSNbpUoY3vYaqO1B1N5iDUQaZWdaecrOVt99ij8WyrMrH-hoHP1EcckOVbGXVqD-D1Q1gIACC_rqL_QmLqnkdUdZacDgkcKV6lLMOdHg9insfDo4BHes0K0VulKhO1boRNG8uHde2h31vxW_OiuAWIFcVtOW0h-n_-H6chUNPjq_TSG7668CsEQHxkho5E9bRrAy</recordid><startdate>20141001</startdate><enddate>20141001</enddate><creator>Silva, Patricia I. 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M</au><au>Martins, Catarina I. M</au><au>Höglund, Erik</au><au>Gjøen, Hans Magnus</au><au>Øverli, Øyvind</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Feeding motivation as a personality trait in Nile tilapia (Oreochromis niloticus): role of serotonergic neurotransmission</atitle><jtitle>Fish physiology and biochemistry</jtitle><stitle>Fish Physiol Biochem</stitle><addtitle>Fish Physiol Biochem</addtitle><date>2014-10-01</date><risdate>2014</risdate><volume>40</volume><issue>5</issue><spage>1547</spage><epage>1557</epage><pages>1547-1557</pages><issn>0920-1742</issn><eissn>1573-5168</eissn><abstract>Consistent individual variation in behaviour and physiology (i.e. animal personality or coping style) has emerged as a central topic in many biological disciplines. Yet, underlying mechanisms of crucial personality traits like feeding behaviour in novel environments remain unclear. Comparative studies, however, reveal a strong degree of evolutionary conservation of neural mechanisms controlling such behaviours throughout the vertebrate lineage. Previous studies have indicated duration of stress-induced anorexia as a consistent individual characteristic in teleost fishes. This study aims to determine to what degree brain 5-hydroxytryptamine (5-HT, serotonin) activity pertains to this aspect of animal personality, as a correlate to feed anticipatory behaviour and recovery of feed intake after transfer to a novel environment. Crucial to the definition of animal personality, a strong degree of individual consistency in different measures of feeding behaviour (feeding latency and feeding score), was demonstrated. Furthermore, low serotonergic activity in the hypothalamus was highly correlated with a personality characterized by high feeding motivation, with feeding motivation represented as an overall measure incorporating several behavioural parameters in a Principle Component Analyses (PCA). This study thus confirms individual variation in brain 5-HT neurotransmission as a correlate to complex behavioural syndromes related to feeding motivation.</abstract><cop>Dordrecht</cop><pub>Springer-Verlag</pub><pmid>24858238</pmid><doi>10.1007/s10695-014-9947-2</doi><tpages>11</tpages></addata></record> |
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| subjects | Animal Anatomy Animal Biochemistry Animal Physiology Animals anorexia Behavior Biomedical and Life Sciences Brackish Brain research Chromatography, High Pressure Liquid - veterinary Cichlids - physiology Comparative studies Eating disorders Environment feed intake Feeding behavior Feeding Behavior - physiology Feeds fish Freshwater & Marine Ecology Histology hypothalamus Hypothalamus - metabolism Life Sciences Morphology motivation Motivation - physiology Observation Oreochromis niloticus Personality Personality - physiology Personality traits Physiology Principal Component Analysis Serotonin Serotonin - metabolism Synaptic Transmission - physiology Teleostei Tilapia Zoology |
| title | Feeding motivation as a personality trait in Nile tilapia (Oreochromis niloticus): role of serotonergic neurotransmission |
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