Predation risk modifies behaviour by shaping the response of identified brain neurons
Interpopulation comparisons in species that show behavioural variations associated with particular ecological disparities offer good opportunities for assessing how environmental factors may foster specific functional adaptations in the brain. Yet, studies on the neural substrate that can account fo...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00220949_v219_n8_p1172_Magani |
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todo:paper_00220949_v219_n8_p1172_Magani2023-10-03T14:26:09Z Predation risk modifies behaviour by shaping the response of identified brain neurons Magani, F. Luppi, T. Nuñez, J. Tomsic, D. Crab Ecology Escape Population Visual stimuli animal Argentina Brachyura brain escape behavior geography male nerve cell nociception photostimulation physiology predation risk factor Animals Argentina Brachyura Brain Escape Reaction Geography Male Neurons Nociception Photic Stimulation Predatory Behavior Risk Factors Interpopulation comparisons in species that show behavioural variations associated with particular ecological disparities offer good opportunities for assessing how environmental factors may foster specific functional adaptations in the brain. Yet, studies on the neural substrate that can account for interpopulation behavioural adaptations are scarce. Predation is one of the strongest driving forces for behavioural evolvability and, consequently, for shaping structural and functional brain adaptations. We analysed the escape response of crabs Neohelice granulata from two isolated populations exposed to different risks of avian predation. Individuals from the high-risk area proved to be more reactive to visual danger stimuli (VDS) than those from an area where predators are rare. Control experiments indicate that the response difference was specific for impending visual threats. Subsequently, we analysed the response to VDS of a group of giant brain neurons that are thought to play a main role in the visually guided escape response of the crab. Neurons from animals of the population with the stronger escape response were more responsive to VDS than neurons from animals of the less reactive population. Our results suggest a robust linkage between the pressure imposed by the predation risk, the response of identified neurons and the behavioural outcome. © 2016, Company of Biologists Ltd. All rights reserved. Fil:Magani, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tomsic, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00220949_v219_n8_p1172_Magani |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Crab Ecology Escape Population Visual stimuli animal Argentina Brachyura brain escape behavior geography male nerve cell nociception photostimulation physiology predation risk factor Animals Argentina Brachyura Brain Escape Reaction Geography Male Neurons Nociception Photic Stimulation Predatory Behavior Risk Factors |
| spellingShingle |
Crab Ecology Escape Population Visual stimuli animal Argentina Brachyura brain escape behavior geography male nerve cell nociception photostimulation physiology predation risk factor Animals Argentina Brachyura Brain Escape Reaction Geography Male Neurons Nociception Photic Stimulation Predatory Behavior Risk Factors Magani, F. Luppi, T. Nuñez, J. Tomsic, D. Predation risk modifies behaviour by shaping the response of identified brain neurons |
| topic_facet |
Crab Ecology Escape Population Visual stimuli animal Argentina Brachyura brain escape behavior geography male nerve cell nociception photostimulation physiology predation risk factor Animals Argentina Brachyura Brain Escape Reaction Geography Male Neurons Nociception Photic Stimulation Predatory Behavior Risk Factors |
| description |
Interpopulation comparisons in species that show behavioural variations associated with particular ecological disparities offer good opportunities for assessing how environmental factors may foster specific functional adaptations in the brain. Yet, studies on the neural substrate that can account for interpopulation behavioural adaptations are scarce. Predation is one of the strongest driving forces for behavioural evolvability and, consequently, for shaping structural and functional brain adaptations. We analysed the escape response of crabs Neohelice granulata from two isolated populations exposed to different risks of avian predation. Individuals from the high-risk area proved to be more reactive to visual danger stimuli (VDS) than those from an area where predators are rare. Control experiments indicate that the response difference was specific for impending visual threats. Subsequently, we analysed the response to VDS of a group of giant brain neurons that are thought to play a main role in the visually guided escape response of the crab. Neurons from animals of the population with the stronger escape response were more responsive to VDS than neurons from animals of the less reactive population. Our results suggest a robust linkage between the pressure imposed by the predation risk, the response of identified neurons and the behavioural outcome. © 2016, Company of Biologists Ltd. All rights reserved. |
| format |
JOUR |
| author |
Magani, F. Luppi, T. Nuñez, J. Tomsic, D. |
| author_facet |
Magani, F. Luppi, T. Nuñez, J. Tomsic, D. |
| author_sort |
Magani, F. |
| title |
Predation risk modifies behaviour by shaping the response of identified brain neurons |
| title_short |
Predation risk modifies behaviour by shaping the response of identified brain neurons |
| title_full |
Predation risk modifies behaviour by shaping the response of identified brain neurons |
| title_fullStr |
Predation risk modifies behaviour by shaping the response of identified brain neurons |
| title_full_unstemmed |
Predation risk modifies behaviour by shaping the response of identified brain neurons |
| title_sort |
predation risk modifies behaviour by shaping the response of identified brain neurons |
| url |
http://hdl.handle.net/20.500.12110/paper_00220949_v219_n8_p1172_Magani |
| work_keys_str_mv |
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1807322273020903424 |