Introduction of Macrobrachium rosenbergii to Brazil for prawn farming has resulted in escapes to the local natural environment. In some areas risk of feral populations establishing in local environments is considered low due to a lack of suitable habitat for completing the life cycle. In contrast, introduction of this species along the mangrove coasts of northern Brazil can result in escape to ...

A probiotic yeast, Saccharomyces cerevisiae was incorporated in basal diet prepared with fish meal, soybean meal, groundnut oil cake, corn flour, tapioca flour, egg albumin, cod liver oil and vitamin Bcomplex, at four different concentrations (10g, 20g, 30g and 40g kg) and fed to Macrobrachium rosenbergii post larvae (PL) for 90 days. The effect of this probiotic incorporation on the growth and...

Present study was conducted to determine the dry mass and the total ammonia-N (TAN) excretion in embryos, Zoea (I–XI) and post-larvae (PL) stages of Macrobrachium rosenbergii at 1, 5, and 10 d after metamorphosis (PL1, PL5, and PL10). Tested animals were collected according to their developmental stages, and placed into incubation chambers (∼50 mL) for 2 hours to calculate the TAN excretion of ...

The impact of tributyltin (TBT) on the female gonad and the endocrine system in Macrobrachium rosenbergii was studied. Prawns were exposed to environmentally realistic concentrations of 10, 100, and 1000 ng/L of TBT for 6 months. Dose dependent effects were noticed in TBT exposed prawns. At 1000 ng/L TBT caused ovotestis formation (formation of male germ cells in ovary). Presence immature oocyt...

A pathogen of giant freshwater prawn, Macrobrachium rosenbergii, was recently recorded in a hatchery in Yogyakarta. The clinical symptom in post-larvae (PL) was a whitish appearance of the muscles in the tail. Histological examination revealed myonecrosis with massive infiltration of myonuclei and hemocytes. RT-PCR products of 850 bp were obtained when using RNA from diseased PL as a template. ...

Flow cytometry provides rapid and reproducible methods for analyzing crustacean cellular immune responses to pathogens. We used this method to investigate the hemocytes sub-populations of freshwater prawn Macrobrachium rosenbergii and their immune responses to a novel pathogen spiroplasma MR-1008. M. rosenbergii inoculated with 100 μl spiroplasma strain MR-1008 in logarithmic phase (10(8) spiro...

This study presents updated information on six exotic aquatic species (five crustaceans and one fish): Macrobrachium rosenbergii, Penaeus monodon, Charybdis hellerii, Balanus trigonus, Amphibalanus improvisus, Pterois volitans. The research is based bibliographic available in scientific articles published by the Research Group Fishing Evaluation of Tropical Fishery Resources Biological Photogra...

BACKGROUND Allergy to specific shrimp species has not been studied systematically by oral challenges. A comparison of allergy to different shrimp species, especially seawater or freshwater varieties treatment, would be useful in testing shrimp-allergic subjects. OBJECTIVE The aim of the study was to identify cases of specific allergy to seawater shrimp, Penaeus monodon (Pm), or freshwater shr...

The aim of the study is to determine effect feed type (Daphnia pulex-based and Dajana nano gran brand) on water quality (presence microorganisms suspended solids) growth survival Macrobrachium rosenbergii shrimp larvae. implementation plan involved 4 groups shrimps placed under same conditions, which were evaluated for 14 weeks through periodic observations biometrics. data obtained recorded si...

The total haemocyte count (THC), phenoloxidase activity, respiratory bursts (release of superoxide anions), superoxide dismutase (SOD) activity, and phagocytic activity and clearance efficiency to the pathogen Lactococcus garvieae were measured when freshwater giant prawns Macrobrachium rosenbergii (18.2+/-2.1 g) were individually reared in water containing concentrations of trichlorfon of 0, 0...