A5077463005- Aquaculture Nutrition and Growth
- Circadian rhythm and melatonin
- Physiological and biochemical adaptations
- Reproductive biology and impacts on aquatic species
- Birth, Development, and Health
- Aquaculture disease management and microbiota
- Fish Ecology and Management Studies
- Zebrafish Biomedical Research Applications
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Photoreceptor and optogenetics research
- Animal Behavior and Reproduction
- Spaceflight effects on biology
- Neuroendocrine regulation and behavior
- Marine and fisheries research
- Neurobiology and Insect Physiology Research
- Fish biology, ecology, and behavior
- Genetics, Aging, and Longevity in Model Organisms
- Adipose Tissue and Metabolism
- Epigenetics and DNA Methylation
- Hypothalamic control of reproductive hormones
- Retinal Development and Disorders
- Sperm and Testicular Function
- Subterranean biodiversity and taxonomy
- Marine Ecology and Invasive Species
- Water Quality Monitoring Technologies
Universidad de Murcia
2016-2025
Karlsruhe Institute of Technology
2011-2021
Vanderbilt University
2012
Universidad de Cádiz
2010
The circadian clock is synchronized with the day-night cycle primarily by light. Fish represent fascinating models for deciphering light input pathway to vertebrate since fish cell clocks are regulated direct exposure. Here we have performed a comparative, functional analysis of involving zebrafish that normally exposed and cavefish species has evolved in perpetual darkness. Our results reveal retains food-entrainable oscillates an infradian period. Importantly, however, this not This...
With the exception of modern mammals, most vertebrate species possess two GnRH genes, GnRH-1 and GnRH-2. In addition, in many teleost fish, there is a third gene called GnRH-3. If main function unambiguously to stimulate gonadotropin release, other forms still lack clear functions. This particularly true for highly conserved GnRH-2 that encodes chicken GnRH-II. variant consistently expressed neurons dorsal synencephalon groups but has no functions supported by anatomical, pharmacological,...
Food provided on a periodic basis can act as potent synchronizer, being stronger zeitgeber than light for peripheral oscillators in mammals. In fish, however, little is known about the influence of feeding time circadian pacemaker and relationship between central oscillators. The aim this research was to investigate mealtime activity rhythms, (brain) (liver) zebrafish. authors tested different times under light-dark (LD) cycle endogenous origin food-anticipatory (FAA) by zebrafish at fixed...
Food is not continuously available in the wild, and so most animals show a wide variety of circadian rhythms that can be entrained to feeding time. The aim this research was evaluate effect time-restricted on daily gilthead sea bream, with food being provided during day or night under 12:12 h light-dark (LD) cycle constant light (LL) conditions. Self-feeding locomotor activity, as well cortisol, glucose, melatonin, were evaluated. Fish synchronized their behavior phase, LD they displayed 78%...
Light and temperature cycles are the most important synchronizers of biological rhythms in nature. However, relative importance each, especially when they not phase, has been poorly studied. The aim this study was to analyze entrainment daily locomotor activity light and/or zebrafish. Under two constant temperatures (20°C 26°C) 12:12 light-dark (LD) cycles, zebrafish were active during day (light) time showed higher total at warmer temperature, while diurnalism 20°C than 26°C (87% 77%,...
Light is the most important synchronizer of melatonin rhythms in fish. This paper studies influence characteristics light on plasma sole. The results revealed that under long‐term exposure to constant conditions (LL or DD), total 24 h production was significantly higher than LD, but LL and DD influenced differently. Under LL, remained at around 224 pg/ml throughout h, while a significant elevation (363.6 pg/ml) observed subjective evening. Exposure 1 pulses MD (mid‐dark) inhibited depending...
Abstract: The melatonin daily rhythm provides the organism with photoperiod‐related information and represents a mechanism to transduce concerning time of day. In addition, duration amplitude nocturnal elevation gives about thus year. this study, we investigate existence an annual plasma in Senegal sole. Differences levels between fish kept at controlled temperature (17–20°C) those exposed environmental cycle (11.5–25°C) were also examined throughout Spawning was registered both groups...
The endocrine axis controlling the stress response displays daily rhythms in many factors such as adrenal sensitivity and cortisol secretion. These have mostly been described mammals, whereas they are poorly understood teleost fish, so that their impact on fish welfare aquaculture remains unexplored. In present research, authors investigated hypothalamus-pituitary-interrenal (HPI) flatfish Solea senegalensis, which has both scientific commercial interest. a first experiment, hypothalamic...
Light plays a key role in synchronizing rhythms and setting the phase of early development. However, to date, little is known about impact light wavelengths during ontogeny molecular clock behavioural rhythmicity. The aim this research was determine effect different (white, blue red) on onset locomotor activity gene (per1b, per2, clock1, bmal1 dbp) expression rhythms. For purpose, 4 groups zebrafish embryo/larvae were raised from 0 7 days post-fertilization (dpf) under following lighting...
The role of light and feeding cycles in synchronizing self-feeding locomotor activity rhythms was studied white shrimps using a new system activated by photocell trigger. In experiment 1, maintained under 12:12h light/dark (LD) photoperiod were allowed to self-feed feeders connected photoelectric cell, while recorded with second photocell. On day 30, animals subjected constant darkness (DD) for 12days check the existence endogenous circadian rhythms. 2, exposed both LD fixed meal schedule...
Abstract The circadian system plays a crucial role in most physiological processes. molecular clock is linked to epigenetic mechanisms, both of which are influenced by nutrient status and, consequently, feeding. This research investigated how feeding times (mid-light, ML, vs. mid-dark, MD) synchronize daily rhythms behavior, genes, and mechanisms the European sea bass ( Dicentrarchus labrax ), focusing on hypothalamus liver assess impact central peripheral pacemakers. Feeding at MD...