Effects of temperature on metabolism, growth and growth efficiency of Thysanoessa longipes (Crustacea: Euphausiacea) in the Japan Sea
Effects of temperature on metabolism, growth and growth efficiency of Thysanoessa longipes (Crustacea: Euphausiacea) in the Japan Sea
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DOI：
10.1093/plankt/fbh146
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发表时间：
2004-09
影响因子：
2.1
通讯作者：
N. Iguchi;T. Ikeda
中科院分区：
文献类型：
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作者：
N. Iguchi;T. Ikeda
在0 ~ 14 ℃的8个温度下，测定了日本海中部长柄缨尾鱼幼鱼和成鱼的生长（蜕皮间期和蜕皮增量）和代谢（耗氧量）。在0 ~ 14 ℃范围内，随着温度的升高，蜕皮间期逐渐缩短.在饲养实验中没有满意地评估蜕皮增量，因此，这是估计自然生长曲线和栖息地温度，结合实验室获得的蜕皮数据。氧气消耗率从0到8摄氏度呈指数级增长，然后趋于平稳。根据这些结果，生长表示为温度和体型的函数，代谢表示为温度的函数。由于温度对生长和代谢的影响不同，净生长效率[NGE：100？生长/（生长+代谢）]随温度而变化。T.长足类的最大NGE值在0 ~ 8 ℃之间变化，取决于体长为5、10、15和20 mm的样本。本研究结果与我们以前关于太平洋磷虾（Euphausia pacifica）在日本海食物网中这两个重要营养种的身体组成和栖息地利用的数据进行了比较。
Growth (assessed from intermolt period and molt increment) and metabolism (oxygen consumption) of juvenile and adult Thysanoessa longipes from central Japan Sea were determined at eight different temperatures ranging from 0 to 14 � C. The intermolt period shortened progressively as temperature increased from 0 to 14 � C. The molt increment was not assessed satisfactorily in the rearing experiments, and therefore this was estimated from the natural growth curve and habitat temperature, combined with laboratory-obtained intermolt data. Oxygen consumption rates increased exponentially from 0 to 8 � C and then leveled off. From these results, the growth was expressed as a function of temperature and body size and metabolism as a function of temperature. Because of the differential effects of temperature on growth and metabolism, the net growth efficiency [NGE: 100 � growth/(growth + metabolism)] changed with temperature. The temperature at which T. longipes attained maximum NGE varied from 0 to 8 � C, depending on the body length of specimens of 5, 10, 15 and 20 mm. The present results are compared with our previous data on Euphausia pacifica in relation to the body composition and habitat usage of these two trophically important species in the food web of the Japan Sea.