饵料粒度对玉筋鱼摄食、生长和生态转换效率的影响
Comparing the food consumptions, growths and conversion efficiencies of sandlance(Ammodyte personatus Girard) between two groups fed with different granularity diets
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摘要: 在实验室大型玻璃钢水槽中,流水条件下投喂两种不同颗粒大小的卤虫,采用Eggers模型比较了黄海、渤海主要中上层小型鱼类玉筋鱼的摄食、生长和生态转换效率等生态能量学特征.结果表明:投喂颗粒小的幼体卤虫的排空率比投喂颗粒大的成体卤虫的大,分别为0.2136,0.1887.摄食小颗粒幼体卤虫的玉筋鱼的摄食率、生长率和生态转换效率分别为22.53g/(100g·d)(湿质量)或60.14kJ/(100g·d),3.63g/(100g·d)(湿质量)或14.86kJ/(100g·d),16.12%(以湿质量计)或24.70%(以能量计);而摄食大颗粒成体卤虫的玉筋鱼的摄食率、生长率和生态转换效率分别为27.54g/(100g·d)(湿质量)或51.69kJ/(100g·d),4.77g/(100g·d)(湿质量)或19.50(kJ/100g·d),17.31%(以湿质量计)或37.69%(以能量计).摄食成体卤虫的湿重比摄食幼体卤虫的多,而摄食幼体卤虫所含能量比成体卤虫的高;从玉筋鱼的生长情况来看,成体卤虫投喂的效果明显优于幼体卤虫,不管是用湿重还是用能含量来表示,摄食成体卤虫的生长都比摄食幼体的快,摄食成体的生态转化效率也都比摄食幼体的要高.Abstract: The ecological energetic parameters,such as food consumption(C),growth(G) and ecological conversion efficiency(E),of two sandlances group fed with different granularity Artemis salina were determined by gastric content method in controlled conditions of laboratory.The results indicated that:The gastric evacuation rate of small juvenile Artemis salina feeding group was more than that of big adult Artemis salina feeding group,whose rates were 0.2136 and 0.1887 respectively.Those parameters such as C,G and E of the group fed with small granularity Artemis salina are 22.53 g/(100 g·d) (WW) or 60.14kJ/(100 g·d),3.63g/(100 g·d) (WW) or 14.86 kJ/(100 g·d),16.12%(WW) or 24.70%(kJ) ;those of the group fed with big granularity Artem is salina are 27.54 g/(100 g·d) (WW) o r 51.69 kJ/(100 g·d),4.77 g/(100 g·d) (WW) or 19.50 kJ/(100 g·d),17.31%(WW) or 37.69%(kJ).The food comsumption in wet mass of big adult Artemis salina feeding group was more than that of small juvenile Artem is salina feeding group,and that in energy t he result s rever sed.It w as show n t hat big adult A rt emi s sal i na feeding group grown better than small juvenile Artemis salina feeding group.Not only in wet mass but also in energy,growth and ecological conversion efficiency of big adult Artemis salina feeding group were better than that of small juvenile Artemis salina feeding group.
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Key words:
- Artemis salina /
- different granularity /
- food consumption /
- growth /
- ecological conversion efficiency
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