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	Provedor de dados Neotropical Ichthyology (2) Autor Fernandes-de-Castilho,Marisa (2) Barreto,Rodrigo Egydio (1) Freire,Carolina Arruda (1) Giaquinto,Percília Cardoso (1) Gonçalves-de-Freitas,Eliane (1) Souza-Bastos,Luciana Rodrigues de (1) Volpato,Gilson Luiz (1) Mais... Palavra-chave Anti-predator behavior (1) Behavior (1) Chemical communication (1) Club cell (1) Electro-olfactogram (EOG) (1) Fish stress (1) Jundia (1) Olfaction (1) Preference test (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2015 (1) 2014 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Bile acids as potential pheromones in pintado catfish Pseudoplatystoma corruscans (Spix & Agassiz, 1829): eletrophysiological and behavioral studies Neotropical Ichthyology Giaquinto,Percília Cardoso; Barreto,Rodrigo Egydio; Volpato,Gilson Luiz; Fernandes-de-Castilho,Marisa; Gonçalves-de-Freitas,Eliane. 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... Tipo: Info:eu-repo/semantics/article Palavras-chave: Behavior; Electro-olfactogram (EOG); Olfaction; Preference test. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100237 Skin extract from Rhamdia quelen(Siluriformes: Heptapteridae) does not promote stress in conspecifics Neotropical Ichthyology Souza-Bastos,Luciana Rodrigues de; Freire,Carolina Arruda; Fernandes-de-Castilho,Marisa. Chemical communication is widely used in aquatic environments, where visual or auditory signals may not be always effective. Fish of the superorder Ostariophysi are known to display epidermal cells (club cells) that produce and store alarm substances, which are released to the water when the skin is damaged. Responses to alarm substances range widely, between active searches for refuge to a complete stop in any locomotor activity. In this study a large number of binucleated club cells (average density of 11 cells /5m2) were histologically observed in the skin of the catfish Rhamdia quelen (known as jundia). Skin extract (2, 5, and 10% w/v) applied for 15 minutes to conspecifics elicited increase in swimming activity and in the area visited by the fish... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anti-predator behavior; Chemical communication; Club cell; Fish stress; Jundia. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000100125 Registros recuperados: 2 Primeira ... 1 ... Última

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