Light Dark Preference
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Validação da preferência claro/escuro como modelo comportamental de ansiedade no Carassius auratus (peixe dourado) / Validation of the light/dark preference as a behavioral model of anxiety in Carassius auratus (goldfish).
A validação de um modelo experimental para se investigar a ansiedade deve estar baseada inicialmente em uma validação comportamental paramétrica, que pressupõe a investigação de respostas relacionadas ao comportamento de defesa da espécie frente às situações aversivas presentes no ambiente de exposição. Assim, o presente trabalho validou a pref
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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2. Preference for the light compartment of a light/dark cage does not affect rat exploratory behavior in the elevated plus-maze
The are few reports on the relationship between elevated plus-maze and effects of maintenance conditions in the days prior to the test. Previously, we have demonstrated that being forcibly in total dark or in light for four days does not alter exploratory behavior in the plus-maze. The present study aimed at recording illumination level preferences in rats u
Psychology & Neuroscience. Publicado em: 2008-06
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3. Análise do comportamento e crescimento do camarão branco Litopenaeus vannamei (Boone, 1931) em diferentes substratos inconsolidados
The aim of this study was to test the sediment preference of L. vannamei shrimp. It was observed shrimp visit frequency, swimming and burying behaviour at different sediment compositions for 24h. Juvenile (0.93 0.29g) and sub-adult shrimps (10.0 1.18g) were obtained from the aquaculture station at Universidade Federal Rural do Semi-Árido UFERSA, and held in
Publicado em: 2007
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4. INFLUÊNCIA DA UTILIZAÇÃO DO EXTRATO HIDROALCOÓLICO DE PRÓPOLIS SOBRE O DESENVOLVIMENTO DE FUNGOS E CARACTERÍSTICAS FÍSICOQUÍMICAS E SENSORIAIS DO SALAME TIPO ITALIANO. / Influence of the use hydroalcoholyc extract of propolis on the development of moulds on physic-chemical and sensorial properties of Italian dry sausage
The objective of the present work evaluate the efficiency of the hydro alcoholic extract of propolis in different concentrations in the control from the development of moulds in the Italian dry cured sausage surface, as well as to its influence about the parameters physic-chemical and sensory. The solution of propolis was diluted in four different concentrat
Publicado em: 2004
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5. Efeito da remoção das vibrissas mistaciais sobre o comportamento exploratório do rato no labirinto em cruz elevado sob condições de claridade e obscuridade. / Effects of mistacial vibrissae removal on the rat exploratory behavior in the elevated plus-maze under two illumination conditions.
Exploratory behavior in the rat is characterized by a preference for dark environments and by a trend to remain close to vertical surfaces(thigmotaxis). When allowed to freely explore an elevated plus-maze a rat will exhibit a smaller number of entries into the open arms and a smaller time spent in them. This characteristic pattern of behavior can be reverte
Publicado em: 1999
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6. Biotransformation and Bioconcentration of Steroid Estrogens by Chlorella vulgaris
The biotransformation and bioconcentration of natural and synthetic steroid estrogens by Chlorella vulgaris were investigated by using batch-shaking experiments with incubation for 48 h in the light or dark. Estradiol and estrone were interconvertible in both light and dark conditions; however, this biotransformation showed a preference for estrone. In the l
American Society for Microbiology.
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7. Context-Dependent Olfactory Learning in an Insect
We studied the capability of the cricket Gryllus bimaculatus to select one of a pair of odors and to avoid the other in one context and to do the opposite in another context. One group of crickets was trained to associate one of a pair of odors (conditioned stimulus, CS1) with water reward (appetitive unconditioned stimulus, US+) and another odor (CS2) with
Cold Spring Harbor Laboratory Press.
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8. Metabolism of carbon monoxide by Rhodopseudomonas gelatinosa: cell growth and properties of the oxidation system.
Rhodopseudomonas gelatinosa 1 grew as an anaerobic facultative methylotroph with carbon monoxide as the sole carbon and energy source. Carbon from CO was assimilated into cell material via the ribulose 1,5-bisphosphate carboxylase cycle. The CO oxidation system in R. gelatinosa was induced during growth with the gas substrate. Light-grown cells did not oxidi
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9. Orphanin FQ acts as an anxiolytic to attenuate behavioral responses to stress
Orphanin FQ (OFQ, Nociceptin) is a recently discovered 17-amino acid neuropeptide that is structurally related to the opioid peptides but does not bind opioid receptors. OFQ has been proposed to act as an anti-opioid peptide, but its widespread sites of action in the brain suggest that it may have more general functions. Here we show that OFQ plays an import
The National Academy of Sciences of the USA.
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10. Point mutation in the mouse glucocorticoid receptor preventing DNA binding impairs spatial memory
Activation of central glucocorticoid receptors caused by the stress that is associated with a learning task facilitates storage of the acquired information. The molecular mechanism underlying this phenomenon is entirely unknown. Glucocorticoid receptors can influence transcription both through DNA binding-dependent and -independent mechanisms. To assess the
The National Academy of Sciences.
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11. Elongation of exogenous fatty acids by the bioluminescent bacterium Vibrio harveyi.
Bioluminescent bacteria require myristic acid (C14:0) to produce the myristaldehyde substrate of the light-emitting luciferase reaction. Since both endogenous and exogenous C14:0 can be used for this purpose, the metabolism of exogenous fatty acids by luminescent bacteria has been investigated. Both Vibrio harveyi and Vibrio fischeri incorporated label from
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12. Regular exercise attenuates the metabolic drive to regain weight after long-term weight loss
Weight loss is accompanied by several metabolic adaptations that work together to promote rapid, efficient regain. We employed a rodent model of regain to examine the effects of a regular bout of treadmill exercise on these adaptations. Obesity was induced in obesity-prone rats with 16 wk of high-fat feeding and limited physical activity. Obese rats were the
American Physiological Society.