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	Provedor de dados Zoologia (1) Neotropical Ichthyology (1) Autor Freire,Carolina Arruda (2) Fernandes-de-Castilho,Marisa (1) Prodocimo,Viviane (1) Souza-Bastos,Luciana Rodrigues de (1) Palavra-chave Acclimation (1) Anti-predator behavior (1) Chemical communication (1) Club cell (1) Critical thermal maxima and minima (1) Fish stress (1) Jundia (1) Platyfish (1) Temperature (1) Xiphophorus maculatus (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2001 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última 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 Critical thermal maxima and minima of the platyfish Xiphophorus maculatus Günther (Poecillidae, Cyprinodontiformes): a tropical species of ornamental freshwater fish Zoologia Prodocimo,Viviane; Freire,Carolina Arruda. Temperature as an environmental factor has been a frequent subject of study, since it affects either directly or indirectly all living organisms. The determination of thermal limits (critical thermal minima - CTmin and maxima - CTmax) for the tropical ornamental freshwater teleost Xiphophorus maculatus Günther, 1866 (platyfish) was performed after their acclimation to the following temperatures: 15, 20, 25, and 30ºC, for seven days. After this period, the water temperature was elevated or reduced at a rate of 0.125ºC/min until CTmax and CTmin could be determined as the temperature at which 50% of the animals had lost equilibrium. Mean values for CTmax and CTmin for the acclimation temperatures of 15, 20, 25, and 30ºC were respectively:... Tipo: Info:eu-repo/semantics/article Palavras-chave: Xiphophorus maculatus; Temperature; Critical thermal maxima and minima; Acclimation; Platyfish. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500007 Registros recuperados: 2 Primeira ... 1 ... Última

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