where good management practices on aquaculture are mandatory. The economic and ecological importance of prawns the Genus Macrobrachium cause an impact at a global level involving economic, academic social aspects. americanum appears as one genus species with high nutritional value demand in national international markets, well vital income for fisherman producers this species. For researchers, ...

Anthropogenic carbon dioxide-induced ‘ocean acidification’ is predicted to have major implications for marine organisms. As the oceans becomes increasingly hypercapnic (elevated CO2) and seawater pH decreases, the ability of organisms to maintain extracellular pH homeostasis (acid– base balance) may be compromised. Acid–base regulation occurs by ionic transport, where hydrogen and bicarbonate i...

We compare the genetic structuring and demographic history of two sympatric caridean shrimp species with distinct life history traits, one amphidromous species Palaemon capensis and one marine/estuarine species Palaemon peringueyi, in the historical biogeographical context of South Africa. A total of 103 specimens of P. capensis collected from 12 localities and 217 specimens of P. peringueyi co...

Periclimenes attenuatus, a new species of pontoniid found in association with an unidentified crinoid from the Duke of York Islands, New Ireland, Bismarck Archipelago, is described and its morphology illustrated. The distinctive features of the shrimp and its relationship to other species of the genus is discussed. The information available concerning pontoniid-crinoid associations is reviewed ...

Potamotrygonid stingrays are restricted to Neotropical rivers and information on their diet remains scarce. Thus, the prey composition of four freshwater stingray species from the middle Negro River was studied using stomach contents analysis: Potamotrygon motoro (n=40), Potamotrygon orbignyi (n=27), Potamotrygon sp. “cururu” (n=26), and Paratrygon aiereba (n=34). Prey items were identified up ...