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	Provedor de dados ArchiMer (1) BJMBR (1) Neotropical Ichthyology (1) Autor Bado Nilles, Anne (1) Bonaldo,Roberta Martini (1) Gagnaire, Beatrice (1) Hellio, Claire (1) Krajewski,João Paulo (1) Renault, Tristan (1) Sazima,Ivan (1) Thomas-guyon, Helene (1) Mais... Palavra-chave Defence (3) Animal models of anxiety (1) Behavioural profiling (1) Crassostrea gigas (1) Ethology (1) Fish-jellyfish association (1) Immunity (1) Oyster (1) Pharmacology (1) Phenoloxidase (1) Plus-maze (1) Predation (1) Prophenoloxidase (1) Protective symbiosis (1) Risk assessment (1) SW Atlantic (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Info:eu-repo/semantics/other (1) Text (1) Ano 2007 (1) 2004 (1) 1997 (1) País Brazil (2) France (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Animal models of anxiety: an ethological perspective BJMBR In the field of anxiety research, animal models are used as screening tools in the search for compounds with therapeutic potential and as simulations for research on mechanisms underlying emotional behaviour. However, a solely pharmacological approach to the validation of such tests has resulted in distinct problems with their applicability to systems other than those involving the benzodiazepine/GABAA receptor complex. In this context, recent developments in our understanding of mammalian defensive behaviour have not only prompted the development of new models but also attempts to refine existing ones. The present review focuses on the application of ethological techniques to one of the most widely used animal models of anxiety, the elevated plus-maze... Tipo: Info:eu-repo/semantics/other Palavras-chave: Animal models of anxiety; Ethology; Defence; Risk assessment; Plus-maze; Behavioural profiling; Pharmacology. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000300002 Demonstration of a true phenoloxidase activity and activation of a ProPO cascade in Pacific oyster, Crassostrea gigas (Thunberg) in vitro ArchiMer Hellio, Claire; Bado Nilles, Anne; Gagnaire, Beatrice; Renault, Tristan; Thomas-guyon, Helene. The prophenoloxidase (ProPO) system is the origin of melanin production and is considered to be an innate defence mechanism in invertebrates. In different bivalve species, phenoloxidase (PO) is present in the haemolymph as an inactive form of ProPO. The present study focuses on the Pacific adult oyster, Crassostrea gigas, an economically important bivalve species along French coasts. The results indicate that many factors may inhibit the PO-like activity. These include: phenylthiourea (PTU), sodium diethylthiocarbamate (DETC), beta-mercaptoethanol and tropolone, which repressed the spontaneous PO activity. The activation of PO-like activity in C. gigas acellular fraction by lipopolysaccharide (LPS) involved participation of other factors, including at... Tipo: Text Palavras-chave: Prophenoloxidase; Phenoloxidase; Oyster; Immunity; Defence; Crassostrea gigas. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2926.pdf Does the association of young fishes with jellyfishes protect from predation?A report on a failure case due to damage to the jellyfish Neotropical Ichthyology Bonaldo,Roberta Martini; Krajewski,João Paulo; Sazima,Ivan. The fish-jellyfish association is regarded as a temporary symbiosis believed to protect the fishes from predators. Here we report on juvenile scads (Trachurus lathami) associated with the jellyfish Chrysaora lactea, opportunistically preyed on by the grouper Mycteroperca acutirostris while the medusa was being damaged. The predation instances occurred when a couple of the filefish Stephanolepis hispidus approached the jellyfish to nibble on its umbrella. The feeding of the filefish caused a momentary disturbance of the defensive association, perceived and capitalised on by the watchful grouper, an opportunistic and versatile hunter. Before and after the disturbance, the protection offered to the young fish by the jellyfish showed to be effective, which... Tipo: Info:eu-repo/semantics/article Palavras-chave: Protective symbiosis; Fish-jellyfish association; Predation; Defence; SW Atlantic. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000200008 Registros recuperados: 3 Primeira ... 1 ... Última

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