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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Effect of methyl parathion on the susceptibility of shrimp Litopenaeus vannamei to experimental vibriosis
Author(s): Labrie, Lauke
Roque, Ana
Gomez-Gil, Bruno
Turnbull, James
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Keywords: Shrimp
Methyl parathion
Issue Date: 29-Dec-2003
Date Deposited: 14-Jan-2013
Citation: Labrie L, Roque A, Gomez-Gil B & Turnbull J (2003) Effect of methyl parathion on the susceptibility of shrimp Litopenaeus vannamei to experimental vibriosis. Diseases of Aquatic Organisms, 57 (3), pp. 265-270.
Abstract: Following increasing calls for environmental safety over the past 2 decades, persistent pesticides are being replaced by more rapidly degradable products. However, even these pesticides can affect non-target species, and may be associated with slow growth and increased susceptibility to viral and bacterial infections. In this study, juvenile white shrimp Litopenaeus vannamei (also named Penaeus vannamei) were challenged by intramuscular injection with Vibrio parahaemolyticus after 4 d prior exposure to methyl parathion in feed pellets at 0.080 microg g(-1). The bacterial injection control group consisted of shrimp fed pellets containing the methyl parathion-carrier solvent acetonitrile. Three additional control groups comprised 2 sterile saline-injection groups fed pellets containing methyl parathion or acetonitrile prior to injection, and 1 uninjected group fed normal pellets. Cumulative mortalities were recorded on the 4th and 8th days, and the presence of histological lesions was recorded on the 8th day. Cumulative mortalities were significantly higher in the group exposed to methyl parathion and bacteria on Day 8. Histological lesions, typical of vibriosis, were significantly associated with the injection of V. parahaemolyticus. The study provides strong experimental evidence that prior exposure to methyl parathion can increase the severity of Vibrio infections.
DOI Link: 10.3354/dao057265
Rights: Publisher policy allows this work to be made available in this repository. Published in Diseases of Aquatic Organisms by Inter-Research. All articles published by Inter-Research journals become open access under Creative Commons licence (CC-BY 3.0) 5 years after publication. The original publication is available at
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