PAHs were measured in water, sediment, and shrimps of Estero de Urias, an estuary in Sinaloa, Mexico, during the rainy and dry seasons, and analyzed for eleven PAHs routinely detected in samples. Phenanthrene was the most dominant congener in the water, sediment, and shrimp samples comprising about 38, 24, and 25%, respectively, of the eleven PAHs detected, followed by pyrene and naphthalene in...

Li X.Y., Li Z.-X., Lin H., Samee H. (2011): Effect of power ultrasound on the immunoactivity and texture changes of shrimp (Penaeus vannamei). Czech J. Food Sci., 29: 508–514. The aim of this study was to examine the effect of power ultrasound on the allergenicity and texture properties of shrimp (Penaeus vannamei). For this purpose, raw and boiled shrimps were treated with power ultrasound (30...

Background: Black spots are a major problem in commercial shrimp species and can have negative effects on shrimps' appearance, quality, shelf life, economic value, and product acceptance by consumers. This study was conducted to investigate the effect of orange peel extract on chemical and sensory qualities as well as black spots on Litopenaeus vannamei species of white farmed shrimp. Methods: ...

The effect of different levels of dissolved oxygen (DO) and a decreased temperature combined with severe hypoxia were studied in the blue shrimp Litopenaeus stylirostris in relation to molt stage. In the first experiment, shrimps were submitted to DO concentrations of 5 to 1 mg l. Osmoregulatory capacity (OC) was measured in shrimps at molt stage C after 6, 24, or 48 h of exposure. No mortality...

Freshwater decapod crustaceans are important components of food webs in these environments, but little is known about the diet of species that live in tropical waters. We studied the feeding ecology of the prawn Pseudopalaemon bouvieri and its population structure in two different areas with six lagoons, with a different composition and abundance of aquatic macrophytes. At each site of macrophy...

An epizootic bacterial infection in the giant freshwater prawn Macrobranchium rosenbergii occurred in Taiwan from May to June 1999. The cumulative mortality was approximately 30 to 75%. The diseased prawns showed opaque and whitish muscles and were approximately 2 mo old with total lengths from 5 to 6 cm. Histopathologically, they showed marked edema and necrotic lesions with inflammation in th...

We investigated the alteration of cytochrome P450-dependent monooxygenase enzymes and antioxidant enzymes in response to oil effluent in freshwater prawn, Macrobrachium malcolmsonii. The prawns were exposed to two sublethal (10% [0.91 ppt] and 25% [2.3 ppt] of 5-day median lethal concentration) concentrations of oil. After 30 days, treated prawns were transferred into untreated freshwater and d...

The aim of this study was to assess the relative contribution of natural productivity and compound food to the growth of the juvenile blue shrimp Litopenaeus stylirostris reared in a biofloc system. Two experiments were carried out based on the same protocol with three treatments: clear water with experimental diet (CW), biofloc with experimental diet (BF) and biofloc unfed (BU). Shrimp surviva...

Immune related genes like penaeidins have been characterized and the sequence diversity among penaeidins from various shrimp isolates are well documented. However, no attempt has been made to study the differential expression and sequence variations of these genes in Indian context. Genes coding for penaeidin was PCR amplified and sequenced from hemocyte cDNA of wild caught Penaeus monodon shri...

The purpose of this research was to determine the content heavy metals and microbiological quality, compare requirements quality standard values according SNI 2729:2013 2705:2014, as well value Bioaccumulation Factor (BAF) maximum consumption limit fish giant prawns metal-concentrated. This researh used survey random sampling methods, i.e taking samples (tilapia, broom fish, prawns) at 3 (three...