Antibacterial defenses and palatability of shallow-water Antarctic sponges

摘要: Marine sponges are exposed to predation as well a wide array of potentially harmful microorganisms, and therefore they often possess chemical activity against putative predators and/or pathogens. Some crude extracts from effective in avoiding microbial colonization or potential infections, protecting them predation. Here, the antibacterial 18 sponge species Antarctic shallow-waters was tested four human pathogenic bacteria. Moreover, all were for feeding repellence seastar Odontaster validus, one main living those habitats. All showed at least bacterial isolate, although not active The effect sympatric bacteria stronger than In contrast, deterrence low, with similar activities both hydrophilic lipophilic extracts. Only (Myxilla lyssostyla, Phorbas areolatus, Polymastia invaginata Iophon sp.), presented repellent defenses. Therefore, we conclude that defenses widespread shallow-water sponges, fact, these better protected predator. We represent valuable source biological compounds pharmacological ecological relevance.