不同饵料条件下玉筋鱼摄食、生长和生态转换效率的比较  

Comparison of food consumption,growth and conversion efficiencies among sandlance (Ammodyte personatus Girard) fed with different kinds of food

作　　者：刘勇[1] 孙耀[1] 唐启升[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所

出　　处：《中国水产科学》2005年第3期260-266,共7页Journal of Fishery Sciences of China

基　　金：国家重点基础研究发展规划项目资助(G1999043710).

摘　　要：将Eggers模型移入实验室大型玻璃钢水槽中,采用3种室内可能得到的实验饵料:冷冻细脚长(Themistogra cilipes)、天然成体卤虫(Artemissalina)和小黄鱼糜(Fishsilage),在流水条件下,比较黄渤海主要中上层小型鱼类玉筋鱼(Ammodytepersonatus)对上述3种饵料的摄食、生长和生态转换效率等生态能量学特征。结果显示,3种饵料中,虽然玉筋鱼对细脚长的能量生态转换效率较高,但是其湿重摄食量[g/(100g·d)FW]和能量摄食量[kJ/(100g·d)]都比较低,生长情况较差;卤虫的食物生态转换效率较高,湿重摄食量较多、生长情况较好;鱼糜的能量摄食量较多,生长情况介于两者之间,但其生态转换效率均较低。与自然生长的玉筋鱼相比,摄食卤虫的玉筋鱼较接近于自然生长。研究结论认为,室内玉筋鱼的模拟实验,在不能获得自然活体饵料的情况下,卤虫不失为一个理想的选择。This experiment was conducted in Qingdao Maidao Experiment Base of Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences.The sandlances (Ammodyte personatus Girard) in the experiment were caught by fixation net from alongshore sea area.After being transferred into large steel-glass tanks in lab,the fish were domesticated for about one week.The water in tanks was flowing,and its velocity was not less than 24m^(3)/d based on the guideline that the water chemical target could be similar to that of the nature.The sea water was deposited and sieved by sand firstly,and then were transferred to tanks.The average water temperature was (20.40±0.95)℃.Whole experiment was under nature light cycle.After the fish had been adapted to the environment,the experiment started.During the experiment the fish were fed with three kinds of food,ie.Themisto gracilipes,Artemis salina and fish silage,which were accessible under lab conditions.They were fed everyday twice at 6:00 and 16:00 to overmuch so as to ensure the ecological energetic parameters of sandlance could be got under the largest food consumption condition.Gastric content sampling method in field was transformed in lab.For each measurement 20 samples were collected at 3-hour intervals,and this measurement period was 24 h.This experiment was conducted every 5 d,and there were 5 times in total.At the middle of this experiment,gastric evacuation experiment was made.Five samples were taken every one hour,and there were 11 sampling times totaly.In all of above experiments,when sandlances were sampled,they must be put into formalin solution immediately to be fixed.The parameters,such as body length,body weight,gastric food content and so on were measured after all these experiments were finished.Since sandlance body was so small,gastric food content was substituted by whole gut food contents.The gut food contents were measured by following steps:first,the whole gut including gullet,stomach and intestine were weighed up after dried by absorb-water paper;se

关 键 词：摄食 生长 生态转换效率 饵料 玉筋鱼 

分 类 号：S963.21[农业科学—水产养殖]