Siderophore is the Greek phrase for “iron bearer” and is applied to molecules that can bind metals at very high affinities. Marine bacteria as do their terrestrial counterparts, secrete siderophores, which are small peptide molecules, readily assembled by short dedicated metabolic pathways which contain side chains and functional groups that can provide a high affinity set of ligands for coordi...

One assumption made in bacterial production estimates from [3H]thymidine incorporation is that all heterotrophic bacteria can incorporate exogenous thymidine into DNA. Heterotrophic marine bacterium isolates from Tampa Bay, Fla., Chesapeake Bay, Md., and a coral surface microlayer were examined for thymidine uptake (transport), thymidine incorporation, the presence of thymidine kinase genes, an...

In the 1930s, August Krogh, Homer Smith, and Ancel Keys knew that teleost fishes were hyperosmotic to fresh water and hyposmotic to seawater, and, therefore, they were potentially salt depleted and dehydrated, respectively. Their seminal studies demonstrated that freshwater teleosts extract NaCl from the environment, while marine teleosts ingest seawater, absorb intestinal water by absorbing Na...