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November 2, 2015

The Philippines

Research—AHPND/EMS Confirmed


From Abstract: In the Philippines, acute hepatopancreatic necrosis disease (AHPND) has recently emerged as a serious disease of farmed Penaeus vannamei and P. monodon.  AHPND is also called ‘”early mortality syndrome (EMS)” because it results in mass mortalities during the first 20 to 30 days of growout.  In P. vannamei, histology revealed typical AHPND pathology, such as sloughing of undifferentiated cells in the hepatopancreatic tubule epithelium.  Analysis using the IQ2000 AHPND/EMS Toxin 1 PCR Test generated 218 bp and 432 bp amplicons confirmative of the toxin-producing strain of V. parahaemolyticus among shrimp sampled from 8 of 9 ponds.  In P. monodon, histology revealed massive sloughing of undifferentiated cells of the hepatopancreatic tubule epithelium in the absence of basophilic bacterial cells.  PCR testing generated the 2 amplicons confirmatory for AHPND among shrimp sampled from 5 of 7 ponds.  This study confirms the presence of AHPND in P. vannamei and P. monodon farmed in the Philippines and suggests that the disease can also impact late-stage juvenile shrimp.


Source: Diseases of Aquatic Organisms.  Acute Hepatopancreatic Necrosis Disease (AHPND) Outbreaks in Penaeus Vannamei and P. Monodon Cultured in the Philippines.  Leobert D. de la Peña (email, Aquaculture Department, Southeast Asian Fisheries Development Center, Tigbauan, Iloilo 5021, Philippines), Nikko Alvin R. Cabillon, Demy D. Catedral, Edgar C. Amar, Roselyn C. Usero, Wilberto D. Monotilla, Adelaida T. Calpe, Dalisay DG. Fernandez and Cynthia P. Saloma.  Volume 116, Number 2, Pages 251-254, Online publication date October 27, 2015.

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