A mathematical model is used to investigate the role of sedimentation and remineralization in the sediment on nitrogen (N) dynamics in intensive shrimp culture ponds. The model describes the key processes involved in N cycling that underpin the dynamics of total ammoniacal N (TAN), nitrate/ nitrite (NOX) and chlorophyll a (CHL) concentrations and the sediment N pool. These parameters may, in hi...

a r t i c l e i n f o Recently, several groups of researchers reported that besides serine proteinases, other classes of proteinases may be involved in crustacean's food protein digestion, including cysteine and aspartic proteinases. In this paper, a comparative study of the class and type of digestive proteinases of whiteleg shrimp Penaeus vannamei, blue shrimp Penaeus stylirostris, and yellow...

Vibrio harveyi infection was an obstacle in shrimp culture. Meanwhile, the use of antibiotics disease control no longer effective, so immunostimulants such as meniran leaves safest alternative. The purpose this study to determine effect adding different doses leaf extract (Phyllanthus niruri L.) feed on immune system vannamei (Litopenaeus vannamei) which challenged with harveyi. This research e...

This study was conducted to investigate the use of fresh and heat-treated roselle meals on growth, body colouration, survival against Vibrio harveyi infection whiteleg shrimp, Litopenaeus vannamei. Fresh (FR) or (HR) were added at 10% in isoproteic (38%) isolipidic (7%) diets. A control diet prepared without any addition meal. These diets fed shrimp (initial weight 1.26g±0.02g) triplicate group...

24 Background: There are no set specific IgE (sIgE) to predict shrimp allergy as cross25 reactivity with other arthropods play a role in shrimp sensitization. 26 Objective: This study identifies the allergens associated with shrimp allergy in house 27 dust mite (HDM) and non-HDM sensitized patients. 28 Methods: Patients with shrimp sensitization (positive skin prick test [SPT] and/or sIgE) 29 w...

The thermal stability and IgE binding of raw and boiled shrimp extracts and the tropomyosins (TM) have not been reported. In this study, we compare the stability of raw and boiled shrimp TM of Litopenaeus vannamei and evaluate how boiling may alter the allergenicity of L. vannamei. Extracts were prepared from raw and boiled shrimp and analyzed by sodium dodecyl sulfate-polyacrylamide gel electr...

Shrimp aquaculture is playing a vital role in Malaysian agriculture, especially its increasing contribution to economic growth. White shrimp aquaculture is not only the key player in brackish water shrimp aquaculture but also the largest contributor to Malaysian shrimp aquaculture. This study estimates technical efficiency and investigates factors affecting technical inefficiency of Malaysian w...

The problem arises in vanamei shrimp cultivation is the emergence of diseases, such as vibriosis caused by Vibrio parahaemolyticus. Jatropha leaf extract can be used an immunostimulant because it contains bioactive compounds namely flavonoid, tannins, saponins, and alkaloids. This research a completely randomized design (CRD) with 5 treatments 3 replications. were; P1 (feed without bacterial in...

Honduras has established itself as the leading producer of pond-raised shrimp in Central America. Although this activity already represents the third staple of the national economy, relatively few economic analyses have been conducted to date. For this study, data on production of farm-raised shrimp were collected from 21 farms. Data are from the year 1997. Information was collected on technica...

This paper describes a demonstration of the SHriMP visualization tool. SHriMP provides a flexible and customizable environment for exploring software programs. It supports the embedding of multiple views, both graphical and textual within a nested graph display of a program’s software architecture. SHriMP has recently been redesigned and reimplemented using Java Bean components. These APIs allo...