摄食水平和性别对稀有鮈鲫生长和能量收支的影响   总被引：7，自引：0，他引：7  

朱晓鸣  解绶启  崔奕波  杨云霞  光寿红 《海洋与湖沼》2001,32(3):240-247

于1995年10月采集本所自繁有ju鲫（约1.03g/ind)，在30℃水温下进行摄食－生长实验，研究了从饥饿到饱食5个摄食水平对不同性别稀有ju鲫的生长和能量收支的影响，结果表明，鱼体干物和能量含量不受摄食率和性别的影响，随着摄食率的增加，雌鱼的湿重，干重和能量特定生长率均呈双对数增加，雄鱼湿重特定生长率呈双对数增加，而干物质和能量特定生长率呈指增加，雄鱼生长速度及摄食率低于雌鱼，随着摄食率的增加，食物能损失于粪便中的比例均呈上升趋势，损失于排泄物中的比例变化不大，呈下降趋势，用于代谢的比例呈下降趋势，用于生长的比例呈上升趋势，除饥饿组外，在各个摄食水平，雌鱼食物能用于代谢的比例较雄鱼低，而用于生长的比例较雄鱼高。  相似文献   

基于GIS技术的康滇地区铅锌矿资源潜力预测          下载免费PDF全文

文军  侯立平  朱晓鸣  万平益  晏子贵  卢珍松  梁英  杨浩 《地质找矿论丛》2015,30(3):383-391

根据四川省铅锌矿资源潜力评价空间数据库成果,应用GIS评价技术研究了康滇地区典型铅锌矿矿床的地质-地球物理-地球化学特征、找矿标志及成因,提取了成矿有利的地质信息、构造信息、物探信息及化探信息等,进行康滇地区铅锌矿的资源潜力预测,建立了成矿模式和找矿模型。根据铅锌矿的时空分布规律预测了找矿远景区,在康滇地区圈定了5个矿集区、7个重点找矿远景区,确定主攻类型为黑区式和大梁子式,其次为小石房式和乌依式。  相似文献   

Physiological responses of Chinese longsnout catfish to water temperature   总被引：1，自引：0，他引：1  

韩冬  解绶启  朱晓鸣  杨云霞 《中国海洋湖沼学报》2011,29(3):633-639

We evaluated the effect of water temperature on the growth and physiology of the Chinese longsnout catfish (Leiocassis longirostris Günther). The fish were reared at four temperatures (20, 25, 30, and 35°C) and sampled on days 7, 20, and 30. We measured plasma levels of insulin, free thyroxine (FT4), free 3,5,3′-triiodothyronine (FT3), lysozyme and leukocyte phagocytic activity. The optimum water temperature for growth was 27.7°C. The plasma levels of insulin and FT4 declined significantly (P<0.05) on day 30 at temperatures above 20°C. Lysozyme activity was significantly (P<0.05) lower at 25°C than at other temperatures. We conclude that final weight, insulin, FT4, and lysozyme were significantly affected by water temperature.  相似文献   

摄食水平对异育银鲫生长及能量收支的影响   总被引：31，自引：3，他引：28  

朱晓鸣  解绶启  崔奕波 《海洋与湖沼》2000,31(5):471-479

于 1 995年 6月在中国科学院水生生物研究所关桥繁殖场采集异育银鲫自繁鱼种(体重为 1 .2 6± 0 .0 5g) ,采用生长实验的方法 ,在 30℃水温下 ,测定其从饥饿到饱食 6个摄食水平下的生长和能量收支。结果表明 ,随着摄食水平的增加 ,鱼体干物质和能量含量、表观消化率呈上升趋势 ;湿重特定生长率随摄食水平的增加呈线性上升 ,干重和能量特定生长率呈对数增加 ;饲料转化效率随摄食水平增加而增加 ,达到最大值后维持不变。排泄能和总代谢耗能占摄入食物能的比例不受摄食水平的影响。最大摄食水平下的能量收支式为 :1 0 0C =1 2 .32F 3.2 1U 63.74R 2 0 .72G ,式中 ,C为食物能 ,F为粪便能 ,U为排泄能 ,R为代谢能 ,G为生长能。  相似文献   

天津团泊洼水库水体生物生产力与渔业开发利用   总被引：3，自引：2，他引：3  

方榕乐  朱晓鸣  张水元  王骥  伍焯田  苗金信  霍仕琍  程维桐 《湖泊科学》1992,4(2):38-45

天津市团泊洼水库属华北平原滨海盐碱性水库。1989年多学科综合调查的结果表明:该水体中营养盐类含量氮高磷低,挺水植物藨草、芦苇为主要初级生产者,浮游生物种类贫乏,现存量不高,周丛生物丰富。结果还表明,该水体仍有较大渔产潜力。应从调整鱼类种群结构着手,充分而合理地利用水体中的可更新资源,使渔业、环境协调发展。  相似文献   

四川省布拖县乌依铅锌矿地质特征及找矿方向          下载免费PDF全文

文军  朱晓鸣  杨浩 《地质找矿论丛》2013,28(3):387-392

在综合分析乌依铅锌矿床地质成果资料的基础上,结合近年在该区外围找矿中的一些认识,提出了乌依铅锌矿成矿模式,并对乌依铅锌矿找矿方向进行了分析预测。  相似文献   

Effect of dietary cottonseed meal on growth performance,physiological response,and gossypol accumulation in pre-adult grass carp, <Emphasis Type="Italic">Ctenopharyngodon idellus</Emphasis>     

刘昊昆  严全根  韩冬  金俊琰  朱晓鸣  杨云霞  解绶启 《中国海洋湖沼学报》2016,34(5):992-1003

Cottonseed meal (CM) was used at up to 36.95% content in the diet (replacing 60% of dietary fish meal protein) without any negative eff ects on growth performance of pre-adult grass carp (initial body weight, 761 g) under outdoor conditions. A culture trial was conducted in net cages installed in a large concrete pond. Seven isonitrogenous and isoenergetic diets containing a gradient of CM concentrations (0, 12.2%, 24.4%, 36.6%, 48.8%, 54.8%, and 61.0%) as replacement for dietary fish meal protein (0, 20%, 40%, 60%, 80%, 90%, and 100%) were formulated. Dietary non-resistant starch (from maize) was inverse to dietary CM. Growth performance and feed utilization of fish fed the diets containing CM replacing 0–40% fishmeal protein were not aff ected after the 6-week feeding trial. Accumulation of hepatopancreatic total gossypol in the hepatopancreas was significantly correlated with free gossypol content in the diets (HTG=88.6+1.5×DFG, R ²=0.89, P<0.05). Intestinal α-amylase and γ-glutamyl transpeptidase activities rose along with increasing dietary CM level. The structure of the mid-intestinal tissues and the ultrastructure of the enterocyte microvilli were normal when dietary CM was <36.6% (60% protein replacement). Increasing dietary CM content increased serum alanine aminotransferase levels but decreased serum alkaline phosphatase, cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides, and albumin (P<0.05).  相似文献