Histopathology of Y-organ in Indian white shrimp Fenneropenaeus indicus, experimentally infected with white spot syndrome virus

Vijayan, K K and Balasubramanian, C P and Jithendran, K P and Alavandi, S V and Santiago, T C (2003) Histopathology of Y-organ in Indian white shrimp Fenneropenaeus indicus, experimentally infected with white spot syndrome virus. Aquaculture, 221 (1-4). pp. 97-106.

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Abstract

Histopathology of Y-organ (moulting gland) in Indian white shrimp Fenneropenaeus indicus was studied after challenging the shrimp with virulent white spot syndrome virus (WSSV). Histopathological investigation on the Y-organ collected from moribund shrimps revealed the presence of intranuclear basophilic inclusions, characteristic of WSSV. More than 70% of the Y-organ cells were infected, suggesting the degenerated state of the organ. The cellular integrity of the Y-organ was completely destroyed by the WSSV. Further, Y-organ tissue samples collected from all the 16 experimental shrimp were positive by one-step polymerase chain reaction (PCR), confirming severe WSSV infection. The infected Y-organ in F. indicus with majority of the organ cells observed in the lysed condition suggests a physiological dysfunction of the organ. In uninfected and healthy controls, the lobulated Y-organ showed closely packed normal cells with prominent nuclei and sparse cytoplasm. Physiological implication of a degenerated Y-organ in the moulting and reproduction of the penaeid shrimp is discussed.

Item Type:Article
Official URL/DOI:http://elsevier.com/locate/aqua-online
Uncontrolled Keywords:Histopathology; Y-organ; Indian white shrimp; Fenneropenaeus indicus; white spot syndrome; Moulting gland
Subjects:Fish and Fisheries > Fish Pathology
Divisions:CMFRI-Cochin > Marine Biotechnology
ID Code:5790
Deposited By:Arun Surendran
Deposited On:28 Oct 2010 15:16
Last Modified:28 Oct 2010 15:16

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