Changes in chemical composition of central British Columbia pink salmon during early sea life.
Changes in chemical composition of central British Columbia pink salmon during early sea life.
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DOI：
10.1139/f66-125
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发表时间：
1966-09
期刊：
影响因子：
--
通讯作者：
R. Parker;W. E. Vanstone
中科院分区：
文献类型：
--
作者：
R. Parker;W. E. Vanstone
本文研究了幼鱼在早期生活中体成分的变化。在1963年和1964年获得的自然条件下，当鱼长到7.5厘米长时，它们变得相对更肥胖。体重的进一步增长与体长的增长是等距的。水逐渐成为总重量的比例较小，直到7.5厘米的长度，此后它保持一个近似恒定的比例。注意到身体水分的昼夜波动，并且与昼夜摄食周期相关。蛋白质，就长度而言，在整个研究的大小范围内，表现出积极的异速生长，但在异速生长线的拐点，注意到在约5.5厘米。相对脂质重量被假定为基本上与蛋白质相关，但反映了食物摄入量的长期变化。从高到低的脂肪含量的转变发生在5月底。这种转变是独立的食物摄入，独立的大小本身，并发生在一个移民的开始。
Changes taking place in body composition of juvenile pink salmon during early sea life were studied. Under the natural conditions obtained in 1963 and 1964 the fish became relatively more obese as they grew to a length of 7.5 cm. Further growth in weight was isometric with growth in length. Water progressively became a lesser proportion of total weight until 7.5 cm length, thereafter it remained an approximately constant proportion. A diurnal fluctuation in body moisture was noted, and was correlated with a diurnal feeding cycle. Protein, in respect to length, showed positive allometry throughout the size range studied but an inflection in the allometric line was noted at about 5.5 cm. Relative lipid weight is postulated to be basically correlated with protein but reflected the longer-term changes in amount of food ingested. A shift from high to low lipid content occurred at the end of May. This shift was independent of food ingested, independent of size per se, and occurred at the beginning of a migrator...