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Open AccessArticle

Effect of the Algaecide Palmitoleic Acid on the Immune Function of the Bay Scallop Argopecten irradians

Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul-151742, Korea
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Academic Editor: Derek J. McPhee
Molecules 2016, 21(5), 610; https://doi.org/10.3390/molecules21050610
Received: 3 April 2016 / Revised: 26 April 2016 / Accepted: 4 May 2016 / Published: 10 May 2016
(This article belongs to the Section Natural Products Chemistry)
Palmitoleic acid (PA), an algicidal compound, is used against the toxin producing dinofagelate Alexandrium tamarense, however, its impact on the edible bay scallop (Argopecten irradians) is still unclear. Therefore, we investigated the impacts of effective algicidal concentrations (20, 40, and 80 mg/L) of PA on immune responses in A. irradians. Various immune parameters including acid phosphatase (ACP) activity, superoxide dismutase (SOD), lysozyme, phagocytic activity, total protein, malondialdehyde (MDA) level, and reactive oxygen species (ROS) production and the expression of immune-related genes (PrxV, CLT-6, MT, and BD) were measured at 3, 6, 12, 24, and 48 h post-exposure (hpe) to PA. Lysozyme activity was lower in scallops at 12–48 hpe to 80 mg/L. SOD, ACP activity, ROS production, the total protein, and MDA level was higher at 12 to 48 hpe with different concentrations of PA. Phagocytic activity increased at 6–12 hpe to 40–80 mg/L of PA, but decreased at 24–48 hpe. The expressions of genes PrxV, CLT-6, MT and BD down-regulated at 3 hpe were observed, while differential expressions from 6–48 hpe with different concentrations of PA. The present study demonstrated that immersing A. irradians in PA at effective concentrations could result in differential effects on non-specific immune responses and expressions of immune-related genes. View Full-Text
Keywords: Algaecide; Argopecten irradians; immune response; palmitoleic acid; harmful algal blooms Algaecide; Argopecten irradians; immune response; palmitoleic acid; harmful algal blooms
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Chi, C.; Giri, S.S.; Jun, J.W.; Kim, H.J.; Kim, S.G.; Yun, S.; Park, S.C. Effect of the Algaecide Palmitoleic Acid on the Immune Function of the Bay Scallop Argopecten irradians. Molecules 2016, 21, 610.

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