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Issue:ISSN 1000-7083
          CN 51-1193/Q
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Your Position :Home->Past Journals Catalog->2011 Vol.30 No.2

Effects of Chronic Ambient Nitrite Exposure in Trachemys scripta elegans and Mauremys sinensis
Author of the article:ZHANG Jie1, HONG Mei-ling1*, LIAO Guang-qiao1, SHI Hai-tao1, 2*, LI Chuang1, HU Mao-gui1
Author's Workplace:(1. College of Life Sciences, Hainan Normal University, Haikou 571158, China; 2. Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China)
Key Words:nitrite; Trachemys scripta elegans; Mauremys sinensis; chronic toxicity
Abstract: In order to determine the effects of ambient nitrite exposure on turtles, 224 juvenile Trachemys scripta elegans (weight =13.89 g±1.67 g) and 236 juvenile Mauremys sinensis (weight =13.12 g±1.83 g) were randomly divided into four groups ([NO2-] 0, 100, 200, 500 mg/L) to study the effects of chronic ambient nitrite exposure between the two species. The results showed that: nitrite concentration in the intestine was lower in T.s. elegans than in M. sinensis,and it’s significantly different when exposed 20 d (P<0.01); nitrite concentration in theliver of T. s. elegans was higher at 20 d and 40 d exposure, but lower at 60 d exposure. Superoxide dismutase (SOD) activity in the liver and intestine of T. s. elegans were higher than those in M. sinensis, however malonic dialdehyde (MDA) levels were lower. After being exposed for 40 d, SOD activity increased and MDA levels decreased in the liver and intestine of T. s. elegans with time, but for M. sinensis, SOD activity still decreased and MDA levels increased. Therefore, these results indicated that adaptation and the anti-stress ability in T. s. elegans were stronger than in M. sinensis..
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