Ten out of fifty fresh and refrigerated samples of shrimp (Litopenaeus vannamei) collected from retailers in Natal (Rio Grande do Norte, Northeastern Brazil) tested positive for Vibrio parahaemolyticus. The Kanagawa test and multiplex PCR assays were used to detect TDH and TRH hemolysins and the tdh, trh and tlh genes, respectively. All strains were Kanagawa-negative and tlh-positive. Antibioti...

Taura syndrome virus (TSV), a pathogen of penaeid shrimp and member of the family Dicistroviridae, was recently reported to have the ability to infect primate cells. We independently retested this hypothesis. Three lines of primate cells FRhK-4, MA-104, and BGMK, which are highly susceptible to infection by human picornaviruses, were challenged with TSV. Viral replication was assayed by real-ti...

Although numerous mechanisms of immune defense have been described in crustaceans, the tissue distribution and fate of live bacteria introduced into the host remain unclear. In the present study, Litopenaeus vannamei were injected with a sub-lethal dose of kanamycin-resistant Vibrio campbellii expressing green fluorescent protein. Accumulation of intact bacteria was quantified by real-time PCR,...

Many questions remain unanswered regarding RNAi-based mechanisms and dsRNA-induced antiviral immune responses in penaeid shrimp. In this study, we report the characterization in the white leg shrimp Litopenaeus vannamei of RNAi pathway associated proteins Lv-Ago 1 and Lv-Ago 2, two members of the Argonaute family of proteins, as well as Lv-sid 1, the first shrimp homologue of Sid-1, a membrane ...

A sixty-days feeding trial was conducted to evaluate the inclusion effect of spirulina Arthrospira platensis meal (SM) in diet on growth and health condition juvenile Pacific white shrimp Litopenaeus vannamei. Four isonitrogenous iso-lipidic experimental diets were formulated contain 0%, 0,2%, 0,4% 0,8% SM. After 60 days, sampled total haemocyte counts measured. The performances significantly a...

Tambak merupakan salah satu mata pencaharian masyarakat Indonesia. dimanfaatkan selaku sarana budidaya perairan. Hewan yang dibudidayakan ialah hewan air seperti ikan dan udang. Salah komoditi perairan banyak diminati oleh pemilik tambak udang vanname (Litopenaeus Vannamei). Sebelum memulai udang, haruslah mencari bahan baku dibutuhkan untuk Dalam pencarian ini biasanya harus langsung ke tempat...