Viviane de Oliveira Felizardo

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Although the chronotoxicity of xenobiotics is relatively well known in mammals, the existence of daily rhythms of drug toxicity and effectiveness in fish has been neglected to date. The aim of this research was to investigate the influence of the time (middle of the light phase [ML] versus middle of the dark phase [MD]) of exposure to two anesthetic(More)
The objective was to evaluate the influence of the timing of hormonal induction, using gonadorelin or common carp pituitary extract (CPE), on the reproductive activity of female Astyanax bimaculatus. Fish (N = 44) were weighed, measured, and acclimatized to experimental conditions with a photoperiod of 12 h:12 h light:dark (L:D) for 10 days. Ovulation was(More)
BACKGROUND Specific protocols for milt cryopreservation have been established for some freshwater fish species. However, cryopreservation reduces sperm quality, giving unsatisfactory results in reproduction. OBJECTIVE The objective of this work was to evaluate the effect of different cryoprotectants on the quality of Prochilodus lineatus, Brycon(More)
BACKGROUND: Cryopreserved semen could facilitate procedures during the artificial reproduction in fish. Factors affecting cryopreservation efficiency are important to define efficient protocols. OBJECTIVE This study investigated the application of cryoprotectants on the quality of piracanjuba fish semen, the sperm concentration required for oocyte(More)
This study investigated the application of intra- and extra-cellular cryoprotectant combinations on the quality of curimba Prochilodus lineatus semen subjected to cryopreservation. Semen treatments were tested with 8% DMSO or methanol as intracellular cryoprotectant, 5% egg yolk or lactose as extracellular cryoprotectant and 5% BTS. These cryoprotectant(More)
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