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Campo DC | Valor | Idioma |
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dc.contributor.author | Baldisserotto, Bernardo | - |
dc.contributor.author | Copatti, Carlos Eduardo | - |
dc.contributor.author | Gomes, Levy de Carvalho | - |
dc.contributor.author | Chagas, Edsandra Campos | - |
dc.contributor.author | Brinn, Richard Philip | - |
dc.contributor.author | Roubach, Rodrigo | - |
dc.date.accessioned | 2020-04-24T16:55:22Z | - |
dc.date.available | 2020-04-24T16:55:22Z | - |
dc.date.issued | 2009 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/14620 | - |
dc.description.abstract | Fishes that live in the Amazonian environment may be exposed to several kinds of waters: "black waters", containing high dissolved organic carbon and acidic pH, "white waters", with ten fold higher Ca2+ concentrations than black waters and neutral pH, and "clear waters", with two fold higher Ca2+ concentrations than black waters and also neutral pH. Therefore, the aim of the present study was to analyze Ca2+ fluxes in the facultative air-breather Hoplosternum littorale (tamoatá) exposed to different Amazonian waters. Fishes were acclimated in well water (similar to clear water) and later placed in individual chambers for Ca2+ fluxes measurements. After 4 h, water from the chambers was replaced by a different type of water. Transfer of tamoatás to ion-poor black or acidic black water resulted in net Ca2+ loss only in the first 2 h of experiment. However, transfer from black or acidic black water to white water led to only net Ca2+ influxes. The results obtained allowed us to conclude that transfer of tamoatás to ion-poor waters (black and acidic black water) led to transient net Ca2+ loss, while the amount of Ca2+ in the ion-rich white water seems adequate to prevent Ca2+ loss after transfer. Therefore, transfer of tamoatás between these Amazonian waters does not seem to result in serious Ca2+ disturbance. © 2009 Sociedade Brasileira de Ictiologia. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 7, Número 3, Pags. 465-470 | pt_BR |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Brazil | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/br/ | * |
dc.subject | Hoplosternum Littorale | en |
dc.subject | Pisces | en |
dc.title | Calcium fluxes in Hoplosternum littorale (tamoatá) exposed to different types of Amazonian waters | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1590/S1679-62252009005000002 | - |
dc.publisher.journal | Neotropical Ichthyology | pt_BR |
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