The appropriate feeding regime for larvae and post-larvae of crustacean decapods is essential for successful larval culture. Reports on the development and morphology of the mouthparts and foregut of these crustaceans have aided in the selection of appropriate larval foodstuffs and consequently increased larval survival and growth rate during development. In the present study, the functional mo...

Limitation of food availability (starvation) is known to influence the reproductive ability of animals. Autophagy is a lysosomal driven degradation process that protects the cell under metabolic stress conditions, such as during nutrient shortage. Whether, and how starvation-induced autophagy impacts on the maturation and function of reproductive organs in animals are still open questions. In t...

Healthy juveniles of M. malcolmsoniiwere exposed to 24.1 microg l(-1) of mercury (96 hr LC50: 145 microg l(-1) Hg) for a period of 21 days. The hepatopancreas and gills of the prawns were sampled on 8th, 15th and 22nd day of exposure. Accumulation and elimination of Hg, activity of glutathione S-transferase (GST), content of glutathione (GSH) and metallothionein (MT) level were studied. Mercury...

Bacteria phenotypically resembling members of the phylogenetically distinct planctomycete group of the domain Bacteria were isolated from postlarvae of the giant tiger prawn, Penaeus monodon. A selective medium designed in the light of planctomycete antibiotic resistance characteristics was used for this isolation. Planctomycetes were isolated from both healthy and monodon baculovirus-infected ...

A comparative studies regarding prevalence of microbial flora in the muscle of locally available tiger shrimp (Penaeus monodon) and giant water prawn (Macrobrachium rosenbergii) have been analyzed in terms of aerobic plate count (APC), enterobacteriaceae and Salmonella-Shigella (SS) counts. The total counts ranged from 2.04x10 to 4.5x10 CFU/ml for shrimp and 1.08x10 to 1.2x10 CFU/ml for prawn. ...

In wireless networks, bringing together theory and practice, i.e., going all the way from designing a protocol or application, evaluating it analytically and through simulations to having a working implementation, is far from trivial. This is due especially to the challenges raised by the spatially and time variant nature of the wireless channel. As a consequence, wireless protocol research typ...

Anchistus custos Forsk&l is the only common prawn commensal with bivalves of the family Pinnidae in Singapore waters. The whole morphology shows pronounced modifications connected with the commensal mode of life. The second legs are large and massive and show marked positive allometry in the male but appear to have little function in the general life of the animal. The animal occurs wherever th...

Exposure of prawns to dark- or light-coloured substrates is known to trigger a strong colour adaptation response through expansion or contraction of the colouration structures in the prawn hypodermis. Despite the difference in colour triggered by this adaptive response, total levels of the predominant carotenoid pigment, astaxanthin, are not modified, suggesting that another mechanism is regula...

This study determines the toxic effect of carbaryl (Sevin50% W.P) on the food utilization parameters in intermoult juveniles of the prawn, Macrobrachium malcolmsonii. The prawns (4.5-5.0 cm in length and 1.0-1.25 g wet wt.) were exposed to three sub-lethal concentrations of carbaryl (5.15, 7.73 and 15.47 microgl-1) for duration of 40 days. The toxic medium was renewed daily. The prawns were fed...

Effect of stocking density on growth, biomass increase and survival of postlarvae of Macrobrachium rosenbergii were evaluated in cages fixed inside an earthen pond. In the primary Ž . nursery phase, newly metamorphosed postlarvae PL were stocked for 20 days at densities of 2, y1 Ž . 4, 6, 8 and 10 PLs l . In the secondary phase 60 days , the densities tested were 100, 200, 300, 400, 600 and 800...