![]() When threatened sponges can release those stored secondary metabolites that have cytotoxic, antibiotic and feeding deterrent properties These chemicals prevent settlement of fouling organisms on the sponge surface and restrict competition for space with neighborsħ Spatial Competition Space on which to live is often the most important limiting resource in marine hard-substrate environments. Sponge, hydra A sponge is attached to a solid surface and is unable to flee when faced with a predator Azure vase sponge ![]() Sessile- animals that are not able to move about Ex. Secondary metabolites- are organic compounds that are not directly involved in the normal growth, development or reproduction of organisms, these can be wastes from metabolism or chemicals produced for defense, competition or that aid in reproductive successĪlkaloids- naturally occurring amine in plants and animals Terpenoids- lipids, largest group of natural products made by many varied organisms Glycosides- heavily modified sugar molecules Other compounds-Phenols, phenazines, polyketides,fatty acid synthase products, non ribosomal peptidesĥ Why do sponges use secondary metabolites for defense? Sponge Defenses How does a sponge defend itself?Ģ Chemical Defense Many sponges have chemical defense mechanisms that help protect them against certain bacteria they produce toxins or unpleasant tastes and odors that ward off predators or prevent coral overgrowth that could threaten the sponge's osculum or other systems
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |