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NON-CLOTTING HAEMOLYMPH OF WSSV-INFECTED SHRIMP : IS IT A FACTOR IN INFECTION PROCESSES?

Coco Kokarkin S - Personal Name;

White spot syndrome virus is recognized as the most prominent pathogen of penaeid shrimp and has been affecting this shrimp farming industry around the world. The virus may reduce the shrimp’s immune response and alter enzymatic and biochemical composition of tissues. Similar to other environmental stressed or other pathogen- infected shrimp, in late stages of WSSV infection, shrimp will fail to clot the haemolymph, so any minor injury will lead to increased haemolyph loss. A series of experiments to determine the effect of non-clotting haemolymph on WSSV infection were carried out in controlled facilities in Indonesia. The preliminary test showed that normal clotting time was 13.3 seconds while WSSV-injected shrimp mostly failed to clot their haemolymph 16 hours post infection (hpi). Some other clinical signs such as abnormal swimming, red discoloration, white spots and mortality were consistent with those observed by previous studies. Three shrimp species: banana shrimp (P. merguiensis) 9 g , white leg shrimp (P. vannamei) 7 g and the tiger shrimp (P. monodon) 16.5 g were water-borne-challenged with non-clotting, WSSV-infected haemolymph (NCH) from tiger shrimp donor in duplicate tanks each with 12 shrimp. The control were tiger shrimps fed with WSSV-infected tissue at the rate of 40% of bodyweight (BW) and other tiger shrimps were used as negative controls fed with commercial feed only. The study revealed that NCH dosages of 1.46%; 2.03%; and 2.06% (v/v) for each species were sufficient to infect and kill all shrimps in less than two days compared to eight days for the shrimps fed on infected tissue. The WSSV in non-clotted haemolymph eventuallyattaches into the living tissues of healthy shrimp. This mode of infection is likely more difficult to control by the ordinary fine mesh screening method.


Availability
B1707371Koleksi DigitalArchivelago Indonesia Marine Library - Perpustakaan Kementerian Kelautan dan PerikananAvailable
Detail Information
Series Title
-
Call Number
Koleksi Digital
Publisher
Bali : Indonesian Aquaculture Journal., 2009
Collation
-
Language
English
ISBN/ISSN
-
Classification
NONE
Content Type
-
Media Type
-
Carrier Type
-
Edition
-
Subject(s)
UDANG WINDU (Penaeus monodon)
UDANG VANAME (Litopenaeus vannamei)
Fishes - Infections
Jurnal
Local Content
Publikasi Internal
WSSV
Non-clotting-haemolymph
Penaeus Merguiensis
Specific Detail Info
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Statement of Responsibility
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Archivelago Indonesia Marine Library yang berasal dari gabungan kata ‘archive’ dan ‘archipelago’ yang memiliki makna tempat yang paling sesuai dan lengkap untuk menyimpan informasi mengenai kelautan dan perikanan Indonesia, merupakan perpustakaan khusus di bawah Sekretariat Jenderal Kementerian Kelautan dan Perikanan, dengan koleksi khusus di bidang kelautan dan perikanan.

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