An updated checklist of the freshwater decapod species of Puerto Rico is presented based on records of shrimp and crab species whose presence has been confirmed in Puerto Rico as a result of extensive field collections, examination of carcinological collections, literature review, and personal communications from researchers. The freshwater decapods fauna of Puerto Rico consists of 18 species o...

For the first time the entire sequence of the mating behaviour of Antarctic krill (Euphausia superba) in the wild is captured on underwater video. This footage also provides evidence that mating can take place near the seafloor at depths of 400-700 m. This observation challenges the generally accepted concept of the pelagic lifestyle of krill. The mating behaviour observed most closely resemble...

I. Causative Agent and Disease Reports of abnormal proliferation of tissues in marine decapod crustaceans have been extremely rare. There have been less than a dozen cases in the literature of which only four have shown convincing evidence of cancer. Cancers or neoplasms are growths of abnormal cells that proliferate uncontrollably and have no useful function as opposed to cells that are normal...

Large reef-associated predatory fishes play important roles in aquatic ecosystem along coast because of their ecological functions and economic values to recreational commercial fisheries. This study was carried out assess the function artificial reefs as alternative habitats for two common north Yellow Sea, China, Fat Greenling Hexagrammos otakii Korean rockfish Sebastes schlegelii. According ...

Eight species of Brachyura and two species of Anomura were registered for the first time on the Santa Catarina coast, in the waters around the Arvoredo Marine Biological Reserve. The animals were collected by scuba divers, between 3 and 22 meters depth, from September 2001 to February 2003. A total of 31 decapod species were collected, and most of the new occurrences had already been registered...

Modern reefs are considered important hot spots of biodiversity, but the analysis distribution invertebrate fauna across different reefal domains in ancient ecosystems can be challenging, because fossil record is usually affected by strong taphonomic biases. The lower Eocene coral reef well-exposed outcrops Ramals (Tremp-Graus Basin, southern Pyrenees, northeast Spain), preserve a high diversit...