Dams have long been associated with elevated burdens of human schistosomiasis, but how dams increase disease is not always clear, in part because dams have many ecological and socio-economic effects. A recent hypothesis argues that dams block reproduction of the migratory river prawns that eat the snail hosts of schistosomiasis. In the Senegal River Basin, there is evidence that prawn populatio...

In the present study effects of both injections of serotonin and dopamine on haemolymph glucose, total carbohydrates, glycogen and phosphorylase activity in different tissues of intact and eyestalk ablated M.rosenbergii. The haemolymph glucose levels was increased dose dependent in between 10 and 10 mole/prawn after injection of serotonin and dopamine. While the dose 10 mole/prawn induced peak ...

Effluent water from intensive prawn culture ponds typically has high concentrations of dissolved nutrients such as nitrogen. An experiment was conducted for 28 days to investigate the nitrogen flow where seaweed (Sargassum sp.) was integrated into western king prawn (Penaeus latisulcatus) culture. Three treatments were used, each consisting of four, 0.1m plastic tanks. Treatment 1 and 2 were th...

“Iron prawn” is a condition of severe growth retardation that fishers call. The giant river prawn (Macrobrachium rosenbergii) commercially important species contains high protein content and functional nutrients. However, no proteomic information available for this species. We performed the shotgun 2DLC-MS/MS analysis total from “iron prawn”. Total 19,758 peptides corresponding to 2613 high-con...

Sensory bias, a predisposition towards certain signals, has been implicated in the origin of mate preferences in some species. A risk associated with these biases is that they can be co-opted by predators as sensory lures. Here we propose that the orange spots on the brown pincers of a diurnal, predatory species of prawn function as lures for Trinidadian guppies, which have a sensory bias for o...

The gustavus gene is required for localizing pole plasm and specifying germ cells. Research on gustavus gene expression will advance our understanding of the biological function of gustavus in animals. A cDNA encoding gustavus protein was identified and termed MnGus in the oriental river prawn Macrobrachium nipponense. Bioinformatic analyses showed that this gene encoded a protein of 262 amino ...

Relative to the impressive number of proposals addressing the multitude of challenges raised by IEEE 802.11-based wireless networks, few have known real implementation. In wireless networks, due especially to the unpredictable nature of the wireless channel, bridging theory and practice is far from trivial. In this paper, we advocate including prototyping in the design process of wireless proto...

Toxicity of the extracellular products (ECP) and the lethal attribute of serine protease secreted by five pathogenic Vibrio alginolyticus strains from various sources in kuruma prawn Penaeus japonicus were studied. The ECPs of organisms originally isolated from diseased kuruma prawn or small abalone Haliotis diversicolor supertexta were more lethal (LD50 value of 0.48 or 0.41 microg protein/g p...

A review of the current status of freshwater prawn farming globally, with comments on the statistical information available is provided in this symposium keynote paper. A brief overview of the research on freshwater prawn farming that has been published in international journals since 2000 is also provided. Finally, some research needs are listed and some scenarios for future expansion are expl...

BACKGROUND Prawns and shrimp are a frequent cause of seafood allergy mediated by IgE antibodies. Penaeus monodon and Penaeus latisulcatus, commonly known as black tiger prawn and king prawn, respectively, are among the most frequently consumed prawns in Malaysia. The aim of this study was to identify the IgE-binding proteins of these 2 prawn species. METHODS Raw and boiled prawn extracts were...