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Abstract:

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.

Registro:

Documento: Artículo
Título:Predation risk modifies behaviour by shaping the response of identified brain neurons
Autor:Magani, F.; Luppi, T.; Nuñez, J.; Tomsic, D.
Filiación:Departamento Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IFIBYNE-CONICET, Buenos Aires, 1428, Argentina
Departamento Ciencia Biológicas, Instituto de Investigaciones Marinas y Costeras (IIMyC), CONICET-Universidad Nacional de Mar del Plata, Mar de Plata, 7600, Argentina
Palabras clave: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
Año:2016
Volumen:219
Número:8
Página de inicio:1172
Página de fin:1177
DOI: http://dx.doi.org/10.1242/jeb.136903
Título revista:Journal of Experimental Biology
Título revista abreviado:J. Exp. Biol.
ISSN:00220949
CODEN:JEBIA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v219_n8_p1172_Magani

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Citas:

---------- APA ----------
Magani, F., Luppi, T., Nuñez, J. & Tomsic, D. (2016) . Predation risk modifies behaviour by shaping the response of identified brain neurons. Journal of Experimental Biology, 219(8), 1172-1177.
http://dx.doi.org/10.1242/jeb.136903
---------- CHICAGO ----------
Magani, F., Luppi, T., Nuñez, J., Tomsic, D. "Predation risk modifies behaviour by shaping the response of identified brain neurons" . Journal of Experimental Biology 219, no. 8 (2016) : 1172-1177.
http://dx.doi.org/10.1242/jeb.136903
---------- MLA ----------
Magani, F., Luppi, T., Nuñez, J., Tomsic, D. "Predation risk modifies behaviour by shaping the response of identified brain neurons" . Journal of Experimental Biology, vol. 219, no. 8, 2016, pp. 1172-1177.
http://dx.doi.org/10.1242/jeb.136903
---------- VANCOUVER ----------
Magani, F., Luppi, T., Nuñez, J., Tomsic, D. Predation risk modifies behaviour by shaping the response of identified brain neurons. J. Exp. Biol. 2016;219(8):1172-1177.
http://dx.doi.org/10.1242/jeb.136903