云斑尖塘鳢池塘育苗研究   总被引：2，自引：1，他引：1  

张邦杰  陆昌胜  李春枝  莫介化  李本旺  张瑞瑜  黄永强 《淡水渔业》2007,37(4):76-79

从商业化生产的目的出发,研究池塘云斑尖塘鳢(Oxyeleotris marmoratus)仔幼鱼的培育。育苗池经清塘、培水后,当幼小轮虫生物量达10 eggs/mL以上时,按225～375尾/m2放养刚开口的仔鱼,饲养30 d,长成全长约1.5 cm的稚鱼,开始驯食人工混合饲料,再池养30～35 d,育成全长2.75～3.35 cm幼鱼。2006年共放养仔鱼434万尾,育成早期幼鱼119.7万尾,成活率27.6%。在傍晚时拉网起捕,“三网率”达95%。  相似文献   

中华倒刺鲃、黄颡鱼和华鲮消化酶活性的比较研究   总被引：6，自引：0，他引：6  

周兴华  向枭  叶元土  林仕梅  罗莉 《安徽农业大学学报》2003,(1)

对中华倒刺鱼巴(SpinibarbussinensisBleeker)、黄颡鱼(PelteobagrusfulvidracoRichardson)和华鲮(SinilabeorendahliKimura)各消化器官消化酶进行了测定分析。结果表明,3种鱼蛋白酶活性顺序为:黄颡鱼>中华倒刺鱼巴>华鲮,表明食性不同,摄食能力不同,蛋白酶活性也不同;3种鱼淀粉酶的活性顺序为:中华倒刺鱼巴>华鲮>黄颡鱼,其酶活性与鱼类的食性有关;消化酶在肠道分布,不同鱼表现不同特点。  相似文献   

饥饿对于花(鱼骨)肌肉和血清主要生化指标的影响   总被引：1，自引：0，他引：1  

张守领  顾若波  徐钢春  闻海波 《上海交通大学学报(农业科学版)》2006,24(6)

于20.50±2.15℃的条件下,在室内1 m3的水泥池中进行了为期42 d的饥饿实验,分别在实验开始后的1、7、14、28、42 d取样,以观察饥饿对花背部肌肉和血清主要生化指标的影响。结果表明:花对饥饿忍受能力较强,在实验期间无死亡现象;在饥饿初期花首先快速利用肌肉脂肪作为能量供给,后期则主要以肌肉蛋白作为能量来源,肌肉的水分含量不断升高,灰分含量则以不规则的锯齿状变化;花血清中的血糖对饥饿特别敏感,在14 d内显著下降(P<0.05),之后,保持在动态的恒定水平,而总蛋白质、甘油三脂、总胆固醇、谷丙转氨酶、谷草转氨酶、碱性磷酸酶则在饥饿实验中以波浪状变化并呈下降趋势。  相似文献   

长薄鳅的营养成分研究   总被引：5，自引：0，他引：5  

温小波  胡小迪 《湖北农学院学报》1996,16(4):284-288

通过对长薄鳅鱼体营养成份的测定，结果表明，长薄鳅鱼体中粗蛋白和粗脂肪在干物质中的质量分数分别为８２．１７％、１０．４２％，鱼体水分占鲜重７８．３１％，鱼体氨基酸在干物质中的质量分数为８９．１７％；鱼体必需氨基酸和几种鲜味氨基酸在干物质中的质量分数分别是２９．９４％和３１．１３％，其营养价值评分值分别是：ＡＡＳ０．７３，ＣＳ ０．４５，ＥＡＡＩ１０９．４。长薄鳅的营养价值高于一般鱼类，适于作名贵鱼类  相似文献   

池养线纹尖塘鳢苗种生长、食性与培育研究     

梁仁杰  施时迪  张邦杰 《安徽农业科学》2007,35(36):11863-11866

[目的]研究鱼苗的生长与食性变化,研制相应的生产流程与设施。[方法]依据苗种的习性与食性,对鱼苗进行"培水"与饵料的投放,详细地观察池养线纹尖塘鳢鱼苗的摄食与生长变化。[结果]孵化3d后的鱼苗进入混合营养期,孵化5d后的鱼苗体长4.11mm;进入外源营养期,鱼苗的开口饵料以小型轮虫和藻类为主;孵化20d后的鱼苗体长10.76mm,以枝角类为主要饵料;孵化30d后的鱼苗体长15.62mm,能很好地摄食人工投喂的水丝蚓;鱼苗具明显的昼夜摄食节率,以16:00～20:00时摄食活动最强烈。建立了鱼苗全长(L)与日龄(D)的关系式;鱼苗体重(W)与日龄(D)的关系式;鱼苗个体间的生长速度有一定的差异性。池塘培育期间,以放养密度130～150尾/m2,经40～55d培育至规格3.1～4.1cm的商业性苗种,其成活率达35.3%。[结论]线纹尖塘鳢是塘鳢科中生长较快的鱼类,具有广阔的养殖前景。  相似文献   

中华倒刺Ba、黄颡鱼和华鲮消化酶活性的比较研究   总被引：2，自引：0，他引：2  

周兴华  向枭  叶元土  林仕梅  罗莉 《安徽农业大学学报》2003,30(1):78-81

对中华倒刺鱼巴(Spinibarbus sinensis Bleeker)、黄颡鱼(Pelteobagrus fulvidraco Richardson)和华鲮(Sinilabeo rendahli Kimura)各消化器官消化酶进行了测定分析.结果表明,3种鱼蛋白酶活性顺序为:黄颡鱼＞中华倒刺鱼巴＞华鲮,表明食性不同,摄食能力不同,蛋白酶活性也不同;3种鱼淀粉酶的活性顺序为:中华倒刺鱼巴＞华鲮＞黄颡鱼,其酶活性与鱼类的食性有关;消化酶在肠道分布,不同鱼表现不同特点.  相似文献   

线纹尖塘鳢的形态生物学与核型   总被引：6，自引：0，他引：6  

陈永乐 《水产学报》2006,30(4):562-565

This paper reports the morphological character and karyotype of Oxyeleotris lineolatus. Oxyeleotris lineolatus is native in Australia and call ed sleepy cod. It belongs to Oxyeleotris, Eleotridae, Gobioidei, Perciformes in taxonomy. Recently, it was introduced to China and local people were not familiar with it. So we carried out this study. 30 individuals have been observed and some data were recorded. It has a large mouth that is in front and up. The mandible stands out and is longer than the up jaw. There are many rows of thin teeth in up and down jaws. The pelvie fins are located in chest and pectoral fins are large and fanlike. There are two dorsal fins. The tail fin is circular. Gill rakers are sparse and the number of gill rakers is 8-12+3-4. The gas bladder belongs to physoclistaus and its stomach is strong and I-like. The intestine is thick and short and no pyloric caecas. The length of the digestive path is 48.1％-80.3% of the length of body. Its liver has two lobes and the liver weight is 4.1%-7.2% of the body weight. The digestive organs characters are same as the trait of flesheater fish. Its scale belongs to ctenoid scale and its body surface shows several long lines. There is not lateral line in the body. The number of vertebra is 26-27 and it has 10-11 pairs rib. The number of diploid chromosome is 2n=46 and the karyotype formula is 2sm+8st+36t，NF=48. The relative length of chromosome is from 1.37% to 3.48% and it is continuity. No strange size chromosomes relation to sex was observed. The karyotype of Oxyeleotris lineolatus is similar to that of Oxyeletris marmoratus Bleeker from South East Asia and both of them belong to Oxyeleotri. It testifies the correctness of traditional classification on cytology.  相似文献   

Apparent protein, lipid and energy digestibility coefficients of some commonly used feed ingredients in formulated pelleted diets for silver barb, Puntius gonionotus     

K.N. MOHANTA  S.N. MOHANTY  J.K. JENA  & N.P. SAHU 《Aquaculture Nutrition》2006,12(3):211-218

To assess the apparent protein, lipid and energy digestibility coefficients of commonly used feed ingredients, viz. fish meal, groundnut oil cake, soybean meal, sunflower oil cake, sesame oil cake, mustard oil cake, rice bran, maize meal, black gram husk, green gram husk and wheat bran, a 50‐day trial was conducted for Puntius gonionotus fingerling (5.55 ± 0.32 g) in two successive phases using flow‐through circular fibre‐reinforced plastic tanks (60 L capacity). The photoperiod was 12 h light/12 h dark (12L : 12D). Ground water was used for rearing the fish. Chromic oxide (1%) was used as an external marker. The experimental fish were fed twice daily close to the levels of apparent satiation. The unconsumed feed and faeces were removed 1 h after each feeding. About 2 h after the removal of unconsumed feed and faeces, the freshly released faeces were collected twice daily by siphoning and were stored at ?18 °C for subsequent analysis. The apparent protein, lipid and energy digestibility coefficient values observed are in the range 81.88–95.60, 87.29–94.48 and 73.88–89.97%, respectively, for various test ingredients in P. gonionotus fingerlings, and the study suggests the usefulness of data for feed formulation.  相似文献   

Directionality of pre‐ and post‐breeding migrations of a marbled newt population (Triturus marmoratus): implications for buffer zone management     

P. Marty  S. Anglibert  N. Giani  P. Joly 《水产资源保护:海洋与淡水生态系统》2005,15(3):215-225

• 1. The marbled newt, Triturus marmoratus, is a vulnerable urodele species (listed on Annex IV of the European Habitats Directive). However, biological information about their migration and the terrestrial habitats they use is relatively scarce. In order to investigate the influence of the surrounding habitats of a local pond on the directions of pre‐ and post‐breeding migrations, adult newts were monitored over two successive years (from February 2000 to June 2001) at a permanent pond in south‐western France using a drift fence and pitfall traps.
• 2. In both sexes the entry and exit directions were non‐randomly distributed. Furthermore, males and females generally followed similar directions facing an oak forest and avoiding barren areas. However, the directions followed by postbreeding migrants leaving the pond differed from those they followed when coming to the pond.
• 3. The distribution of captures around the pond was related to environmental factors, and more precisely to vegetation within the immediate surroundings of the pond.
• 4. The environmental conditions occurring at the end of the spring postbreeding migration differed greatly from those occurring during the winter prebreeding migration. Thus, vegetation does not exert similar attraction during the two migration periods.
• 5. This raises the importance of microhabitat diversity in the vicinity of the breeding pond, which provides a wide range of suitable shelters in different migration periods. Conservation planning must take into account the ecological requirements of this endangered species in managing buffer zones around the breeding sites.

Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

六种常用水产药物对花(鱼骨)的急性毒性试验   总被引：1，自引：0，他引：1  

唐明虎  付立霞  魏文志 《水产养殖》2007,28(4):1-4

在常温静水条件下,六种水产药物对花鱼种的急性毒性试验结果表明:硫酸铜硫酸亚铁合剂、高锰酸钾、亚甲基兰、敌百虫、福尔马林、食盐的安全浓度分别为0.04mg/L、0.26mg/.L、0.70mg/L、3.27mg/L、5.59mg/L、871.43mg/L;花对这6种药物的敏感性大小依次为:硫酸铜硫酸亚铁合剂>高锰酸钾>亚甲基兰甲醛>敌百虫>福尔马林>食盐。  相似文献