A Secret World: Natural Products of Marine Life by Prof. Dr. Francesco Pietra (auth.)

By Prof. Dr. Francesco Pietra (auth.)

Underwater exploration is an interesting task due to the richness of sea lifestyles, the attractive shades, and the distinction with terrestrial existence. it may be performed via diving or snorkeling -today there's effective apparatus for diving and taking underwater images­ and, except being a resource of enjoyment, it kinds the foundation of contemporary ecological and behavioral marine reviews. Diving is an emotional task. The silence of the submarine international, simply interrupted by way of respiring, has greater than as soon as evoked the monsters of the remarkable stories of my formative years. perhaps simply because, even though a lot time has elapsed considering then, I nonetheless have a youth's skill to guage every little thing for the fascination it conveys. even though, not more than that may be won from underwater watehing. i'm really not asserting that this can be destined to be a futile workout. Picasso watched sea urchins a lot within the similar manner whereas revealing their quintessence in his work on the citadel of Antibes. What I suggest is that this present day marine lifestyles can be considered from the viewpoint of the usual items concerned. this information, next to Picasso's time, provides a lot to the final picture.

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Microadriatica) it is difficult to build up a map of representative metabolites for the various groups of marine animals. Dinosterol is a chemical mark for both living dinoflagellates and sedimentary material of dinoflagellate origin. In fact dinosterol is present in most dinoflagellates while it is absent from other marine and lacustrine algae. Phytoplankton is also rich in unusual fats. CYANOBACTERIA AND EVOLUTION Cyanobacteria represent an evolutionary stage in the development from primitive prokaryotes to eukaryotes.

Actually, some steroids exert a number of normal functions in our bodies and in other living organisms. Dinoflagellate steroids have particular attention in association marine with relation received to their invertebrates, typically reef corals and sponges. These studies have revealed that the main sterol of Zooxanthella microadriatica gorgonians, such as Briareum asbestinum from the Caribbean, is dinosterol, which is asteroid atypical to higher animals, where the main sterol is cholestero!. In fact, B.

23 MAllUNlE lP'llUMAlRY lP'IROD1UClEIRS THE SPANISH CONQUISTADORES AND CIGUATERA POISONING Gambierdiscus toxicus (Peridiniales), Prorocentrum lima (Proroeentrales), and Amphidinium sp. are plaeed in the third group of toxie dinofiagellates. G. toxicus, whieh was named after the eiguaterie area of the Gambier Islands in tropical Pacific, is a benthic species which does not form blooms. However, it during elevated rate settling preferentially Outbreaks dinofiagellates of divides eertain on this intoxieate at an periods, seaweeds.

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