Marine acorn

Some animals, such as the marine acorn worms (Balanoglossus), produce light via a peroxidation reaction and appear not to require molecular oxygen for luminescence. The luciferase in this case is a peroxidase of the classical type and catalyzes the reaction Luciferin +... 

Marine Crustacea, which include barnacles and crabs and the marine molluscs, which include mussels, can cause severe fouling problems when coastal seawater is used for once-through cooling of power plant turbine condensers. Various species of marine barnacles, mussels, and their spat quickly establish in warm waters and become extremely troublesome. (The problems are exacerbated by seaweed, sponges, various other marine organisms, and SRBs.) The marine acorn (or rock) barnacle, of group Cirripedia, is a common marine foulant, as are the mussels of family Mytillidae. 

The marine bacterium Chromobacterium sp. produces 2,3,4,5-tetrabromopyrrole (1) <74MB281>, and the marine acorn worm Polyphysia crassa has yielded the antibacterial metabolite 2,3,4-tribromopyrrole (2), an extremely labile compound <90JNP703>. The Red Sea sponge Acanthella carteri contains bromopyrrole amide (3) <97JNP180>, and the isomeric... 

Triple bromination of A -TIPS-pyri ole (6) with NBS affords tribromopyrrole 12 (97%) [22], which can either be deprotected to afford the marine acorn worm metabolite 2,3,4-tribromoindole 13 [22,23] or lithiated selectively at C-2 to give, after quenching with carbon dioxide, pyrrole carboxylic acid 14 [24],... 

Constit. of a marine acorn worm. Needles (CHCI3). Mp 136°. 

Isol. from a marine acorn worm. Stronger antiseptic than phenol or thymol. Used as 5-7% soln. in KOH for gravimetric detn. of Pd(//) or Pt(//) (in NH3 soln., as [M(NH3)4][OC6H2Br3]2>. Needles (EtOH), prisms (C.HX Sol. alkalis, EtOH, petrol. Mp 87-89°. Subl. 95-96°. 

Name the following compound, which is produced by the marine acorn worm. 

Marine Crustacea Includes acorn (or rock) barnacle of group Cirripedia and crabs. Also the marine Molluscs, including Mytillidae mussels. 

Bromophenols represent an enormous class of marine natural products, particularly from acorn worms of families Polychaete and Hemichordata. These sediment dwelling animals can live anywhere from the intertidal zone to a depth of 1,400 m (2542, 2543). Thus, one function of 2,4,6-tribromophenol produced by the deep-sea... 

Higa, T., Ichiba, T., and Okuda, R. K., Marine indoles of novel substitution pattern from the acorn worm Glossobalanus sp. Experientia, 41, 1487, 1985. 

Some naturally occurring organohalogen compounds are produced in massive quantities. Forest fires, volcanoes, and marine kelp release up tx>SmiUimi tons oTCHj,Cl pt r yejir. for example, while annual industrial emissions total only about 26,000 tons. A detailed examination of one species of Okinawan acorn worm in a 1 km study urea showed that tl>ey released nearly IQO pounds per day of halogenated phenols, compounds previously thought to be nonnatural pollutants. 

Davenport, J. Irwin, S. 2003. Hypoxic life of intertidal acorn barnacles. Marine Biology, 143, 555-563. 

Looking all around you in the tide pools, you can see so many different creatures sticking themselves to the rocks—tube worms, acorn barnacles, gooseneck barnacles, limpets, mussels, seaweed, periwinkles, starfish, and anemones (see Figure 13.1). We don t yet know how most of them stick. So there is a lot of fun science for you to explore in the future. For now, let me give you an overview of what we do know about these critters. We scientists have more information on mussel adhesive than any other marine system. 

Hemichordata (Acorn worms) 90 Marine, benthic, sedentary, soft bodied... 

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