Biological Clock in Fish by Ewa Kulczykowska, Wlodzimierz Popek, B.G. Kapoor

By Ewa Kulczykowska, Wlodzimierz Popek, B.G. Kapoor

Every one organism has its personal inner organic clock, that's reset by means of environmental cues (Zeitgebers), hence preserving it synchronized with the exterior surroundings. it's a chemically dependent oscillating process inside cells, hoping on molecular suggestions loops. Circadian organic clocks exist in such a lot organisms. what's so precise concerning the clock in fish? the place is it located—in the retina, contained in the mind, or within the pineal? what's the molecular foundation of its functionality? How is the clock in a position to maintain time within the absence of environmental cues? even though organic clocks were intensively studied over the last 4 a long time, only in the near past have the instruments had to study the molecular foundation of circadian rhythms develop into on hand. This ebook experiences the kingdom of data in enough aspect and provides the most recent contributions to the sector, exhibiting fish offer a different version of the circadian organic clock.

Show description

Read or Download Biological Clock in Fish PDF

Best developmental biology books

Plant Cell Death Processes

Programmed mobile demise is a typical development of progress and improvement in either animals and vegetation. besides the fact that, programmed mobile dying and comparable methods aren't as quite often famous as crucial to plant development. this is often altering speedy and is changing into extra of a spotlight of in depth examine. This edited paintings will deliver below one hide contemporary experiences of programmed cellphone loss of life, apoptosis and senescence.

Evolutionary Developmental Biology

Even though evolutionary developmental biology is a brand new box, its origins lie within the final century; the quest for connections among embryonic improvement (ontogeny) and evolutionary switch (phylogeny) has been an extended one. Evolutionary developmental biology is even if greater than only a fusion of the fields of developmental and evolutionary biology.

Evolutionary Developmental Biology of Invertebrates 3: Ecdysozoa I: Non-Tetraconata

This multi-author, six-volume paintings summarizes our present wisdom at the developmental biology of all significant invertebrate animal phyla. the most elements of cleavage, embryogenesis, organogenesis and gene expression are mentioned in an evolutionary framework. every one bankruptcy provides an in-depth but concise evaluation of either classical and up to date literature, supplemented by means of a variety of colour illustrations and micrographs of a given animal workforce.

Additional info for Biological Clock in Fish

Sample text

Here, we shall concentrate on the main features of the cellular components from a functional perspective. PINEAL PHOTORECEPTORS Photic stimuli perceived by pineal photoreceptors are transduced into either a neural signal (graded potentials) or a neuroendocrine signal (melatonin). The neural signal is transmitted by the photoreceptors to second-order neurons, which innervate various centers in the brain. The neuroendocrine signal—melatonin—diffuses out of the photoreceptor after synthesis, and is transported by the blood to the systemic circulation.

These factors include hormones, neuromodulators and neurotransmitters. The hormones that modulate melatonin secretion are melatonin itself and steroids. Melatonin inhibits is own production as seen in cultured trout pineal organs in vitro (Yañez and Meissl, 1995). , 1997). The functional significance of this effect and mechanisms of action remain unknown. , inhibition of HIOMT activity). , 2001). In trout, specific probes detected mRNA corresponding to the 17-b-estradiol receptor, and specific antibodies directed against trout glucocorticoid receptor labeled a single band of proteins in pineal extracts.

Maekawa, K. Yoshida, S. Ohno, K. F. Parada and K. Tanaka. 2003. Potential role of glial cell line-derived neurotrophic factor receptors in Muller glial cells during light-induced retinal degeneration. Neuroscience 122: 229–235. V. T. R. Sargent and J. Falcón. 1994. Lipid composition of the pineal organ from rainbow trout (Oncorhynchus mykiss). Lipids 29: 311–317. , I. Fukuda, T. Ishikawa, Y. Kobayashi and T. Todo. 2003. New role of zCRY and zPER2 as regulators of sub-cellular distributions of zCLOCK and zBMAL proteins.

Download PDF sample

Rated 4.12 of 5 – based on 15 votes

About the Author