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Zou E: Effects of hypoxia and sedimentary naphthalene on the activity of N-acetyl-beta-glucosaminidase in the epidermis of the brown shrimp, Penaeus aztecus. Bull Environ Contam Toxicol. 2009 May;82(5):579-82. Epub 2008 Nov 26. The brown shrimp, Penaeus aztecus, is subject to dual stresses of environmental hypoxia and contamination of polycyclic aromatic hydrocarbons (PAHs) in the northern Gulf of Mexico. The effects of hypoxia and sedimentary naphthalene, administered alone and in combination, on epidermal activity of N-acetyl-beta-glucosaminidase (NAG), a biomarker for molt-interfering effects in P. aztecus, were investigated. It was found that hypoxia and sedimentary naphthalene, when given simultaneously, significantly inhibited epidermal NAG activity, suggesting that these two environmental stressors together can have adverse effects on molting of the brown shrimp. The results of this study also show that sedimentary naphthalene potentiates hypoxia effects on epidermal NAG activity. |
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