scholarly journals A Report on the Hepatopancreatic Microsporidiosis Caused by Enterocytozoon hepatopenaei (EHP) in Penaeus vannamei (Pacific White Shrimp) Farms in Thiruvallur District, Tamilnadu, India

2017 ◽  
Vol 6 (6) ◽  
pp. 147-152 ◽  
Author(s):  
M. Giridharan ◽  
A. Uma
Keyword(s):  
Pacific White Shrimp ◽  
White Shrimp ◽  
Penaeus Vannamei ◽  
Enterocytozoon Hepatopenaei ◽  
Shrimp Farms

First report on Enterocytozoon hepatopenaei (EHP) infection in Pacific white shrimp (Penaeus vannamei) cultured in Korea

Aquaculture ◽  
2022 ◽  
Vol 547 ◽  
pp. 737525
Author(s):  
Ji Hyung Kim ◽  
Chorong Lee ◽  
Hye Jin Jeon ◽  
Bum Keun Kim ◽  
Nam-kyung Lee ◽  
...  
Keyword(s):  
Pacific White Shrimp ◽  
White Shrimp ◽  
Penaeus Vannamei ◽  
First Report ◽  
Enterocytozoon Hepatopenaei

scholarly journals Detection of viruses in the exotic shrimp Penaeus vannamei Boone, 1931 cultured in India

2017 ◽  
Vol 64 (2) ◽  
Author(s):  
Y. Moger Rajeish ◽  
G. NarasimhaMurthy ◽  
Hoovinahalli Nataraju Madhushree ◽  
Basavareddy R. Pujar ◽  
Shivani Kallappa Girisha ◽  
...  
Keyword(s):  
Clinical Signs ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Penaeus Vannamei ◽  
Dot Blot ◽  
Disease Symptoms ◽  
Infectious Myonecrosis Virus ◽  
Blot Hybridisation ◽  
Polymerase Chain ◽  
Shrimp Farms

Pacific white shrimp Penaeus vannamei Boone, 1931, is a recently introduced species in India. P. vannamei samples, collected from various shrimp farms of Karnataka, India were subjected to polymerase chain reaction (PCR) based detection of whitespot syndrome virus (WSSV), hepatopancreatic parvovirus (HPV), monodon baculovirus (MBV), infectious hypodermal and hematopoietic necrosis virus (IHHNV), taura syndrome virus (TSV) and infectious myonecrosis virus (IMNV). Out of the 81 shrimp samples analysed, 41 samples (50.6%) were found positive for WSSV and four (4.9%) were positive for IHHNV. Among 41 WSSV positive samples, 20 (48.7%) samples were found positive for WSSV by 1st step PCR, while the remaining 21 (51.2%) samples were positive by nested PCR. WSSV positive samples were further confirmed by dot blot hybridisation assay. However, clinical signs/disease symptoms were not observed in any of the shrimp samples tested positive for the viruses.

Characterization of a novel shrimp pathogen, Vibrio brasiliensis , isolated from Pacific white shrimp, Penaeus vannamei

2021 ◽  
Author(s):  
Ge Li ◽  
Guosi Xie ◽  
Hailiang Wang ◽  
Xiaoyuan Wan ◽  
Xinshu Li ◽  
...  
Keyword(s):  
Pacific White Shrimp ◽  
White Shrimp ◽  
Penaeus Vannamei

Effects of culturing the Pacific white shrimp Penaeus vannamei in “biofloc” vs “synbiotic” systems on the growth and immune system

Aquaculture ◽  
2021 ◽  
pp. 736905
Author(s):  
Aya S. Hussain ◽  
Deyaaedin A. Mohammad ◽  
Wafaa S. Sallam ◽  
Nahla M. Shoukry ◽  
D. Allen Davis
Keyword(s):  
Immune System ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Penaeus Vannamei ◽  
The Pacific

Ultrastructure of the hepatopancreas of the Pacific white shrimp, Penaeus vannamei (Crustacea: Decapoda)

1988 ◽  
Vol 68 (2) ◽  
pp. 323-337 ◽  
Author(s):  
Thomas Caceci ◽  
Kay F. Neck ◽  
Donal D H. Lewis ◽  
Raymond F. Sis
Keyword(s):  
B Cells ◽  
Plasma Membranes ◽  
Ultrastructural Level ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Penaeus Vannamei ◽  
Intact Cells ◽  
The Pacific ◽  
Total Complement ◽  
Electron Microscopes

Fourteen specimens of the hepatopancreas of the Pacific white shrimp, Penaeus vannamei, were prepared for examination with the transmission and scanning electron microscopes and with the light microscope. The histology and ultrastructure of this organ is similar to that seen in other Decapoda. At the ultrastructural level, it was observed that B-cells rupture at approximately the level of gap junctions located on the lateral plasma membranes of the cells, and discharge the contents of their large vacuoles into the intercellular space. This efflux of enzymatic material may be the mechanism by which cells are released from the wall of the tubule at the proximal end: the rupture and collapse of a B-cell may be analagous to the removal of the keystone which supports an arch. Deprived of support, and lacking structural adaptations for cohesion (there are no desmosomes or interdigitations in the epithelium) and with the intercellular material digested, the remaining intact cells collapse into the lumen of the tubule. The lysis of individual cells of all types - R-, F-, and B-cells - may contribute to the tubules’ total complement of digestive enzymes.

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