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Effects of trophic poisoning with methylmercury on the appetitive elements of the agonistic sequence in fighting-fish (betta splendens)
Gouveia Junior, Amauri; Oliveira, Ciao Maximo de; Ferreira Romão, Cynthia; Marques de Brito, Thiago; Fix Ventura, Dora.
Affiliation
  • Gouveia Junior, Amauri; Universidade Federal do Pará. Brazil
  • Oliveira, Ciao Maximo de; Universidade Estadual Paulista. s.p
  • Ferreira Romão, Cynthia; Universidade Estadual Paulista. s.p
  • Marques de Brito, Thiago; Universidade Estadual Paulista. s.p
  • Fix Ventura, Dora; Universidade de São Paulo. Brazil
Span. j. psychol ; 10(2): 436-448, nov. 2007. tab, ilus
Article in English | IBECS | ID: ibc-77132
Responsible library: ES1.1
Localization: BNCS
ABSTRACT
The aggressive display in Betta splendens is particularly prominent, and vital to its adaptation to the environment. Methylmercury is an organic variation of Hg that presents particularly pronounced neuro-behavioral effects. The present experiments aim to test the effect of acute and chronic poisoning with methylmercury on the display in Bettas. The animals were poisoned by trophic means in both experiments (16 ug/kg in acute poisoning; 16 ug/kg/day for chronic poisoning), and tested in agonistic pairs. The total frequency of the display was recorded, analyzing the topography of the agonistic response. The methylmercury seems to present a dose- and detoxification-dependent effect on these responses, with a more pronounced effect on motivity in acute poisoning and on emotionality in the chronic poisoning. It is possible that this effect could be mediated by alteration in the mono-amino-oxidase systems (AU)
RESUMEN
El despliegue agresivo en la Betta splendens es especialmente prominente y es vital para su adaptación al medio ambiente. Metil-mercurio es una variación orgánica de Hg que presenta efectos neuro-conductuales especialmente pronunciados. Los experimentos actuales intentan poner aprueba el efecto de envenenamiento agudo y crónico con metil-mercurio sobre el despliegue en Bettas. Los animales fueron envenenados tróficamente en ambos experimentos (16 ug/kg eel envenenamiento agudo) y probados en parejas agonistas. Se registró la frecuencia total del despliegue, analizando la topografía de la respuesta agonista. El metil-mercurio parece presentar un efecto dependiente de la dosis y de la detoxificación sobre estas respuestas, con un efecto más pronunciado sobre la motilidad en el envenenamiento agudo y sobre la emotividad en el envenenamiento crónico. Posiblemente, este efecto podría mediarse por la alteración en los sistemas de mono-amino-oxidasa (AU)
Subject(s)
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Collection: National databases / Spain Database: IBECS Main subject: Mercury Poisoning / Methylmercury Compounds Type of study: Diagnostic study / Etiology study Limits: Humans Language: English Journal: Span. j. psychol Year: 2007 Document type: Article Institution/Affiliation country: Universidade Estadual Paulista/s.p / Universidade Federal do Pará/Brazil / Universidade de São Paulo/Brazil
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Collection: National databases / Spain Database: IBECS Main subject: Mercury Poisoning / Methylmercury Compounds Type of study: Diagnostic study / Etiology study Limits: Humans Language: English Journal: Span. j. psychol Year: 2007 Document type: Article Institution/Affiliation country: Universidade Estadual Paulista/s.p / Universidade Federal do Pará/Brazil / Universidade de São Paulo/Brazil
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