Marine sponges often harbor an abundance of associated organisms. We characterized mesofauna associated with the common tropical sponge Amphimedon viridis, and then tested whether physical (spicules) or chemical (lipophilic or hydrophilic extracts) properties

Marine sponges are a very attractive and rich source in the production of novel bioactive compounds. The sponges exhibit a wide range of pharmacological activities. The genus Amphimedon consists of various species, such as viridis, compressa, complanata,

Living benthic marine organisms such as sponges and corals are frequently colonized by bacteria that may be pathogenic to them. One of the means by which they are able to combat microbial attack is by chemical defense. We tested the activity of crude

A novel actinobacterium, designated isolate B138T, was isolated from the marine sponge, Amphimedon viridis, which was collected from Praia Guaecá (São Paulo, Brazil), and its taxonomic position was established using data from a polyphasic study. The organism