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(Referência obtida automaticamente do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Bile acids as potential pheromones in pintado catfish Pseudoplatystoma corruscans (Spix & Agassiz, 1829): eletrophysiological and behavioral studies

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Autor(es):
Percília Cardoso Giaquinto ; Rodrigo Egydio Barreto ; Gilson Luiz Volpato ; Marisa Fernandes-de-Castilho ; Eliane Gonçalves-de-Freitas
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: Neotropical Ichthyology; v. 13, n. 1, p. -, Mar. 2015.
Resumo

Bile acids are potent olfactory and gustatory stimulants for fish. Electro-olfactogram recording was used to test whether the olfactory epithelium of pintado catfish Pseudoplatystoma corruscans is specifically sensitive to bile acids, some of which have been hypothesized to function as pheromones. Five out of 30 bile acids that had been pre-screened for olfactory activity in fish were selected. Cross-adaptation experiments demonstrated that sensitivity to bile acids is attributable to at least 3 independent classes of olfactory receptor sites. The taurocholic acid (TCA) and taurochenodeoxycholic acid (TCD) were the most potent compounds. By using avoidance/preference tests, we found that P. corruscans prefers water containing TCA. Bile acids are discriminated by olfactory epithelium of pintado, supporting that these compounds could function as pheromones. (AU)

Processo FAPESP: 98/03036-4 - Comunicação química no pintado, Pseudoplastystoma coruscans
Beneficiário:Percilia Cardoso Giaquinto
Linha de fomento: Bolsas no Brasil - Doutorado