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Effects of Salinity and Ultraviolet Radiation on the Bioaccumulation of Mycosporine‐like Amino Acids in Artemia from Lake Urmia (Iran)
Author(s) -
Khosravi Sanaz,
Khodabandeh Saber,
Agh Naser,
Bakhtiarian Mahdieh
Publication year - 2012
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.2012.01245.x
Subject(s) - salinity , parthenogenesis , biology , bioaccumulation , population , artemia salina , branchiopoda , botany , food science , ecology , chemistry , crustacean , fishery , cladocera , toxicity , embryo , demography , organic chemistry , sociology
We investigated the effects of salinity and artificial UV radiation on the accumulation of mycosporine‐like amino acids ( MAA s) in sexual and parthenogenetic A rtemia from L ake U rmia. 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 A rtemia were analyzed for their concentration of MAA s. In most of the cases, the higher salinity level applied was found to increase the MAA concentrations in both A rtemia populations significantly. The acquisition efficiency of MAA s in both A rtemia populations increased under exposure to UVR ‐supplemented photosynthetically active radiation ( PAR ) compared to those raised under PAR , except for P orphyra‐334. It was observed that combination of UV radiation and elevated salinity significantly increased the bioaccumulation of MAA s. Thus, the presence of these compounds in these populations of A rtemia may increase their adaptability for living in high‐ UV and high‐salinity conditions prevailing in L ake U rmia. Higher concentrations of MAA s in the parthenogenetic population of A rtemia could be probably attributed to its mono sex nature and higher adaptation capacities to extreme environmental conditions.