Electron Microscopic Evidence of Bacilliform Virus Infection in Kuruma Shrimp(Penaeus japonicus).

Takahashi, Yuichiro; Itami, Toshiaki; Kondo, Masakazu; Maëda, Minoru; Fujii, R; Tomonaga, Susumu; Supamattaya, K.; Boonyaratpalin, Sitdhi

doi:10.3147/jsfp.29.121

Cited by 221 publications

(125 citation statements)

References 7 publications

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“…A 30-min exposure to 10 ppm povidone-iodine in activated PRDV and SEMBV ( Tolerance to ethyl ether Ethyl ether-treated PRDV lost its infectivity (Table 5). Generally, a virus having an envelope loses its pathogenicity when treated with ethyl ether because of the fat-soluble envelope, and this agrees with the exist ence of an envelope in PRDV (Takahashi et al, 1994).…”

Section: Resultssupporting

confidence: 71%

“…Penaeid acute viremia (PAV) caused by penaeid rod-shaped DNA virus (PRDV) was first observed in the early spring of 1993 in cultured kuruma shrimp Penaeus japonicus in Japan (Inouye et al, 1994(Inouye et al, , 1996Takahashi et al, 1994). This infection causes serious mortality accompanied by symptoms of white spots on the inside of the carapace, and reddish discoloration of the body.…”

mentioning

confidence: 99%

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Effect of Various Treatments on White Spot Syndrome Virus (WSSV) from Penaeus japonicus (Japan) and P. monodon (Thailand).

et al. 1998

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Section: Resultssupporting

confidence: 71%

mentioning

confidence: 99%

Effect of Various Treatments on White Spot Syndrome Virus (WSSV) from Penaeus japonicus (Japan) and P. monodon (Thailand).

et al. 1998

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“…White spot syndrome virus (WSSV) is one of the most devastating shrimp pathogens, and it has caused serious damage to the worldwide shrimp culture industry (Takahashi et al 1994; . 1995).…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization of a crustin-like antimicrobial peptide in the giant tiger shrimp, Penaeus monodon, and its expression profile in response to various immunostimulants and challenge with WSSV

et al. 2011

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a b s t r a c tA crustin-like antimicrobial peptide from the haemocytes of giant tiger shrimp, Penaeus monodon was partially characterized at the molecular level and phylogenetic analysis was performed. The partial coding sequence of 299 bp and 91 deduced amino acid residues possessed conserved cysteine residues characteristic of the shrimp crustins. Phylogenetic tree and sequence comparison clearly confirmed divergence of this crustin-like AMP from other shrimp crustins. The differential expression of the crustin-like AMP in P. monodon in response to the administration of various immunostimulants viz., two marine yeasts (Candida haemulonii S27 and Candida sake S165) and two ␤-glucan isolates (extracted from C. haemulonii S27 and C. sake S165) were noted during the study. Responses to the application of two gram-positive probiotic bacteria (Bacillus MCCB101 and Micrococcus MCCB104) were also observed. The immune profile was recorded pre-and post-challenge white spot syndrome virus (WSSV) by semi-quantitative RT-PCR. Expressions of seven WSSV genes were also observed for studying the intensity of viral infection in the experimental animals. The crustin-like AMP was found to be constitutively expressed in the animal and a significant down-regulation could be noted post-challenge WSSV. Remarkable down-regulation of the gene was observed in the immunostimulant fed animals pre-challenge followed by a significant up-regulation post-challenge WSSV. Tissue-wise expression of crustin-like AMP on administration of C. haemulonii and Bacillus showed maximum transcripts in gill and intestine. The marine yeast, C. haemulonii and the probiotic bacteria, Bacillus were found to enhance the production of crustin-like AMP and confer significant protection to P. monodon against WSSV infection.

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“…However, massive shrimp mortality caused by infectious diseases has been regarded as a serious issue for shrimp culture industries. The white spot syndrome virus is one of the most serious pathogens, and it has been causing frequent epidemics since the 1990s [1][2][3] . Up to then, shrimp farming had been operated in the traditional system with water exchange and closed-intensive shrimp farming was suggested as one of the most promising systems to reduce the risk of virus contamination from the traditional system with water exchange 2 .…”

Section: Introductionmentioning

confidence: 99%

Effects of Sterile Ulva sp. Growth Rate on Water Quality Control of Intensive Shrimp Culture Pond in Developing Countries

Habaki

Aoki

Egashira

et al. 2016

Chem.Biochem.Eng.Q.

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To control the water quality in the intensive shrimp mariculture pond by uptaking the total ammonia-nitrogen with sterile Ulva sp., the growth rate of sterile Ulva sp. was experimentally measured and the influence of the rate on the water quality control evaluated. The specific growth rate constant of the seaweed increased with the total ammonia-nitrogen concentration, photosynthetic photon flux density and operating temperature. Then the dynamics of ammonia-nitrogen in the modeled culture pond for the intensive shrimp farming in the tropical region were numerically simulated, in which the seaweed was used to uptake ammonia-nitrogen. The seaweed could uptake ammonia-nitrogen effectively during daytime mainly due to the high intensity of sun light, and the total ammonia-nitrogen concentration in the shrimp pond could be kept very low. The required seaweed density to control the total ammonia-nitrogen concentration less than the recommended maximum concentration of 1.0 ⋅ 10 -3 kg N m -3 was estimated to be reasonable.

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Electron Microscopic Evidence of Bacilliform Virus Infection in Kuruma Shrimp(Penaeus japonicus).

Cited by 221 publications

References 7 publications

Effect of Various Treatments on White Spot Syndrome Virus (WSSV) from Penaeus japonicus (Japan) and P. monodon (Thailand).

Effect of Various Treatments on White Spot Syndrome Virus (WSSV) from Penaeus japonicus (Japan) and P. monodon (Thailand).

Molecular characterization of a crustin-like antimicrobial peptide in the giant tiger shrimp, Penaeus monodon, and its expression profile in response to various immunostimulants and challenge with WSSV

Effects of Sterile Ulva sp. Growth Rate on Water Quality Control of Intensive Shrimp Culture Pond in Developing Countries

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