Effects of Salinity and Ultraviolet Radiation on the Bioaccumulation of Mycosporine‐like Amino Acids in Artemia from Lake Urmia (Iran). (6th November 2012)

• Record Type: Journal Article
• Authors: Khosravi, Sanaz; Khodabandeh, Saber; Agh, Naser; Bakhtiarian, Mahdieh
• Is Part Of: Photochemistry and photobiology. Volume 89:Number 2(2013:Mar./Apr.)
• Page Start: 400
• Page End: 405
• Publication Date: 2012-11-06
• Subjects: Photochemistry -- Periodicals; Light -- Physiological effect -- Periodicals; 541.35
• DOI: 10.1111/j.1751-1097.2012.01245.x
• Languages: English
• ISSNs: 0031-8655

Abstract

<abstract abstract-type="main" xml:lang="en" id="php1245-abs-0001"> <title>Abstract</title> <p>We investigated the effects of salinity and artificial UV radiation on the accumulation of mycosporine‐like amino acids (MAAs) in sexual and parthenogenetic <italic>Artemia</italic> from Lake Urmia. The nauplii hatched from the cysts were cultured until adulthood under two salinities (150 and 250 g L⁻¹) and two light treatments (PAR and PAR+UVR) in the laboratory. Finally, the <italic>Artemia</italic> were analyzed for their concentration of MAAs. In most of the cases, the higher salinity level applied was found to increase the MAA concentrations in both <italic>Artemia</italic> populations significantly. The acquisition efficiency of MAAs in both <italic>Artemia</italic> populations increased under exposure to UVR‐supplemented photosynthetically active radiation (PAR) compared to those raised under PAR, except for Porphyra‐334. It was observed that combination of UV radiation and elevated salinity significantly increased the bioaccumulation of MAAs. Thus, the presence of these compounds in these populations of <italic>Artemia</italic> may increase their adaptability for living in high‐UV and high‐salinity conditions prevailing in Lake Urmia. Higher concentrations of MAAs in the parthenogenetic population of <italic>Artemia</italic> could be probably attributed to its mono sex nature and higher adaptation capacities to extreme environmental conditions.</p> </abstract>