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Registros recuperados: 6
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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
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Discrimination of bile acids by the rainbow trout olfactory system: Evidence as potential pheromone Biol. Res.
GIAQUINTO,PERCILIA C; HARA,TOSHIAKI J.
Electro-olfactogram recording was used to determine whether the olfactory epithelium of adult rainbow trout is specifically sensitive to bile acids, some of which have been hypothesized to function as pheromones. Of 38 bile acids that had been pre-screened for olfactory activity, 6 were selected. The rainbow trout-specific bile acids, taurocholic acid (TCA), and taurolithocholic acid 3-sulfate (TLS) were the most potent compounds tested. TLS had a distinctive dose-response curve. Cross-adaptation experiments demonstrated that sensitivity to bile acids is attributable to at least 3 independent classes of olfactory receptor sites. Our data suggest that bile acids are discriminated by olfaction in rainbow trout, supporting the possibility that these compounds...
Tipo: Journal article Palavras-chave: Bile acids; Chemical signals; Electro-olfactogram; Olfaction; Pheromones; Rainbow trout.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000100005
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Electroantennographic responses of the Lutzomyia (Lutzomyia) longipalpis (Lutz & Neiva) (Diptera: Psychodidae) to 1-octen-3-ol Neotropical Entomology
SANT'ANA,ADSON L.; EIRAS,ALVARO E.; CAVALCANTE,REGINALDO R..
Octenol (1-octen-3-ol) is a kairomone used by haematophagous insects to locate their vertebrate hosts. However, effect of 1-octen-3-ol on Lutzomyia (Lutzomyia) longipalpis (Lutz & Neiva) has never been studied. The present work evaluated the electrophysiological (EAG) responses of female L. (Lutzomyia) longipalpis. Air current, air pulse and solvent (hexane) pulse were used as control stimuli. The logarithmic concentrations of 1-octen-3-ol 10 a 10(6) etag/50µl of solvent were tested. Significant olfactory responses were observed in the concentration of 1-octen-3-ol from 10³ etag/50ul with the greatest response at concentration of 10(6) etag/50ul (-3,33mV). Dose-dependency was observed, as the concentration increased, so did the electrophysiological...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Chemoreception; Olfaction; Semiochemicals; Visceral leishmaniasis.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000100002
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Evidence that the house finch (Carpodacus mexicanus) uses scent to avoid omnivore mammals RChHN
Amo,Luisa; López-Rull,Isabel; Pagán,Iluminada; García,Constantino Macías.
BACKGROUND: The detection of predator chemical cues is an important antipredatory behaviour as it allows an early assessment of predation risk without encountering the predator and therefore increases survival. For instance, since chemical cues are often by-products of metabolism, olfaction may gather information not only on the identity but also about the diet of predators in the vicinity. Knowledge of the role of olfaction in the interactions of birds with their environment, in contexts as important as predator avoidance, is still scarce. We conducted two two-choice experiments to explore 1) whether the house finch Carpodacus mexicanus can detect the chemical cues of a marsupial predatory mammal, the common opossum (Didelphis marsupialis), and 2) whether...
Tipo: Journal article Palavras-chave: Carpodacus mexicanus; Olfaction; Omnivorous predator; Predation risk; Predator diet; Predator chemical cues.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2015000100005
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How chemical compounds affect fruit bats' plant interactions. Infoteca-e
PAROLIN, L. C.; MIKICH, S. B.; HANSEL, F. A.; BIANCONI, G. V..
Fruit bats are known to be able to discriminate, select, and track the essential oils of their preferred fruits. A few years ago, our research group hypothesized, experimented, and confirmed that these bats can be attracted with essential oils only – concentrated volatile aromas – of their preferred fruits both in forested and open areas. These findings led to the proposal of a restoration tool that uses essential oils of chiropterochoric fruits (fruits eaten by bats) to attract seed-dispersing bats to degraded areas with the objective to increase seed arrival and germination.
Tipo: Artigo de divulgação na mídia (INFOTECA-E) Palavras-chave: Olfaction; Morcego; Óleo Essencial; Chiroptera; Essential oils; Mutualism.
Ano: 2019 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1116136
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Lack of response of an open-habitat ungulate to the presence of predator urine RChHN
SARNO,RONALD J; GRIGIONE,MELISSA M; ARVIDSON,LANCE D.
The behavioral response of ungulates to the presence of odors associated with dangerous predators has received some attention, yet little is known about how predominantly open-habitat ungulates react to the presence of predator scents. We investigated the behavioral responses of a predominantly open-habitat ungulate, the guanaco, Lama guanicoe, when exposed to the urine of various predators. Guanacos only reacted to the urine of mountain lions (native predator), Puma concolor, in one trial. The lack of a response to predator urine may indicate that guanacos generally rely on visión more than olfaction for predator detection.
Tipo: Journal article Palavras-chave: Olfaction; Predator scent; Predator detection.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000200003
Registros recuperados: 6
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