Behavioural studies on the lesser sandeel Ammodytes marinus (Raitt) III. The effect of temperature on activity and the environmental control of the annual cycle of activity
Behavioural studies on the lesser sandeel Ammodytes marinus (Raitt) III. The effect of temperature on activity and the environmental control of the annual cycle of activity
复制标题
小檀鳗的行为研究 Ammodytes marinus (Raitt) III。
DOI：
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发表时间：
1974
期刊：
影响因子：
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通讯作者：
P. Winslade
中科院分区：
文献类型：
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作者：
P. Winslade
利用照相记录活动的方法，研究了小沙蚕在5 ° C、10 ° C和15° C下的行为。在10 ° C和15° C下的活动模式非常相似，在光照期间有高水平的游泳活动，在5° C下下降到低水平。在10° C下，实验结束时的温度也低于实验开始时的温度，这可能是由于鱼的脂肪含量增加所致。测量了鱼的摄食率，并显示在5-15° C的温度范围内Q10为2.08。A. marinus讨论有关的食物供应，光照和温度的季节性变化，并在鱼的脂肪含量。它的结论是，产卵后，在12月至1月期间的鱼仍然埋在沙子中，直到4月，因为限制影响游泳和摄食活动的环境因素在干预期间。在4月渔业开始时，可供捕捞的鱼的比例主要与温度有关，但食物（以桡足类数量衡量）、光照强度和光周期到那时都在迅速增加。7月后，渔业停止，人们认为这是因为鱼进入了越冬阶段，在此期间，它们仍然埋在沙子里。这一阶段也被认为是与性腺的成熟为冬季产卵做好准备。导致鱼进入这一阶段的因素尚未确定，但可能与达到一定水平的脂肪含量有关。
The behaviour of the lesser sandeel, Ammodytes marinus (Raitt), has been investigated at 5, 10 and 15° C, using a photographic method of recording activity. The activity patterns at 10 and 15° C were very similar, there being a high level of swimming activity during the light period, which fell to a low level at 5° C. It was also lower at 10° C at the end of the experiment than at the beginning and it is suggested that this might have been due to an increase in the fat contents of the fish. The feeding rate of the fish was measured and showed a Q10 of 2.08 for the temperature range 5–15° C. The annual cycle of activity of A. marinus is discussed in relation to seasonal changes in food availability, light and temperature, and in the fat content of the fish. It is concluded that after spawning in the December–January period the fish remain buried in the sand until April, because of the limiting effect on swimming and feeding activity of the environmental factors in the intervening period. The proportion of fish available for capture at the start of the fishery in April is related mainly to temperature, but food (as measured by numbers of copepods) light intensity and photoperiod are by then increasing rapidly. After July the fishery ceases and it is thought that this is because the fish have entered an overwintering stage, during which they remain buried in the sand. This phase is also thought to be associated with the maturation of the gonads in readiness for the winter spawning. The factors causing the fish to enter this stage are as yet undetermined but may be related to the attainment of a certain level of fat content.