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Effects of rearing temperature on growth, metabolism and thermal tolerance of juvenile sea cucumber, Apostichopus japonicus Selenka: critical thermal maximum (CTmax) and hsps gene expression

文献类型: 外文期刊

作者: Wang, Qing-Lin 1 ; Dong, Yun-Wei 2 ; Qin, Chuan-Xin 3 ; Yu, Shan-Shan 1 ; Dong, Shuang-Lin 1 ; Wang, Fang 1 ;

作者机构: 1.Ocean Univ China, Coll Fisheries, Key Lab Mariculture, Minist Educ, Qingdao, Peoples R China

2.Xiamen Univ, Coll Oceanog & Environm Sci, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China

3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China

关键词: rearing temperature;sea cucumber;growth;metabolic performance;thermal tolerance;critical thermal maxima

期刊名称:AQUACULTURE RESEARCH ( 影响因子:2.082; 五年影响因子:2.415 )

ISSN:

年卷期:

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收录情况: SCI

摘要: Effects of different rearing temperatures (16, 21 and 26 degrees C) on growth, metabolic performance and thermal tolerance of juvenile sea cucumber Apostichopus japonicus (initial body weight 7.72 +/- 0.96g, mean +/- SD) were investigated in this study. During the 40-day experiment, growth, metabolic performance, food intake and energy budget at different reared temperatures were determined. Sea cucumbers rearing at 16 degrees C obtained better growth (final body weight 11.96 +/- 0.35g) than those reared at 21 (10.33 +/- 0.41g) and 26 degrees C (8.31 +/- 0.19g) (P<0.05), and more energy was allocated for growth at 16 degrees C (162.73 +/- 11.85J g(-1)d(-1)) than those at 21(79.61 +/- 6.76J g(-1)d(-1)) and 26 degrees C (27.07 +/- 4.30Jg(-1)d(-1)) (P<0.05). Critical thermal maxima (CTmax) values of juvenile sea cucumbers reared at 16, 21 and 26 degrees C were 33.1, 34.1 and 36.6 degrees C, respectively, and the upregulation of hsps in sea cucumbers reared at 26 degrees C was higher than those acclimated at lower temperatures (16 and 21 degrees C), indicating that temperature acclimation could change the thermal tolerance of the sea cucumber, and CTmax and hsps were sensitive indicators of the sea cucumber's thermal tolerance.

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