新疆乌伦古湖河鲈食性变化的研究

2007年4月25～30日,对乌伦古湖河鲈的食性进行了调查研究.与1987年比较乌伦古湖河鲈食物组成发生了明显的变化;主要食物由20年前的摇蚊幼虫变为易得的池沼公鱼,适口饵料生物的减少使得河鲈选择了替代食物.推断了乌伦古湖河鲈食物的制约是影响种群补充的重要原因.     

洛阳市河滩池塘养鱼万亩高产技术的研究

将我国传统养鱼与现代技术相结合，创造了传统式，集约化和半集约化三种养殖方式共存，融合，变通和转换的格局。应用微机进行动态分析计算，８１２．６公顷河滩池塘，平均每公顷鱼产量提高到１００３５ｋｇ和２００８５元经济效益，分别比原来增加１０５．５％和７０．２％，总体效益十分显著。此外，还探讨了高产的理论问题。     

珠江口池塘幼鲥养成亲鱼的生理生态研究

通过对对操作前后有后鲥鱼血清中ＡＰ，ＬＤＨ，ｇＧＰＴ，ｓＧＯＴ和ＣＯ２含量的测定分析，初步阐明了“缺氧”是导致鲥离水，操作易死和紧张反应强烈的主要原因。进而采用外源药理学和生态学调控方法，克服了鲥鱼在驯养，操作运输过程中的“紧张综合症”。在池塘条件下首次将鲥鱼从幼鱼驯化养成６龄亲体。     

水质改良机改善池塘水质的初步研究

通过多年的研究和生产实践证明，在利用水质改良机改良池塘水质时，应走机械与生物相结合的道路，中文提出翻喷池塘淤泥是改良池塘水质的最有效途径之一，既能充分利用浮游生物光合作用所释放的大量氧，又能有效偿还氧债，改良水质，从而达到提高鱼产量和节能的目的。本文强调偿还养殖水体的氧债，对改良池塘水质至关重要。     

提高罗氏沼虾单位水体出苗量试验

１９９１－１９９２年利用对虾育苗进行了提高罗氏沼虾单位水体出苗量试验。１５个试验池总水体７９．５ｍ＾３，共出虾苗４０４．２３万尾，平均５．０８万尾／ｍ＾３，最高６．３５万尾／＾３．１９９２年１２月专家鉴定认为，本成果达国内先进水平。     

围塘混合养殖环境中重金属在水、生物体和底泥间的富集分布

研究了椒江口围塘混合养殖环境中重金属在水、生物体和底泥间的富集分布,以及该环境中重金属在鲈鱼、鲻鱼、鲶鱼3种鱼样各组织中的分布积累情况。结果表明,与其他海域相比,围塘养殖水体和沉积物中重金属铜的平均含量偏高;3种鱼样中铜的积累规律相同的是皮>鳍>肌肉,镉、锌、铅在鱼体中的相同积累规律是鳍>皮>肉,不同鱼体各组织中重金属的含量为鲻鱼>鲶鱼>鲈鱼,鱼样各组织中重金属的分布积累具有显著性差异。     

Tench (Tinca tinca) broodstock management in breeding station under conditions of pond culture: a review

A basic assumption for carrying out the breeding work is to have well-organised broodstock management. Taking into account the number of populations bred and the limited number of ponds available, it is impossible to avoid rearing several juvenile or adult breeds in mixed stocks. Fish of individual breeds are group-marked with regular renewal of the freeze-branded mark and broodstock adults should be marked individually. To minimise inbreeding or losses in genetic variation, at least 120 fish per strain are reared and when the strain is restored, factorial crosses of at least 15 females and 25 males should be applied. All activities are individually registered in the “Evidence 2003” data-recording software and data can be sorted by the origin of the fish population, of the strain or of individual fish; reproductive and performance parameters are recorded individually also. Further breeding operations with tench comprise the selection after over-wintering and rearing of fish before, during and after the reproductive season.     

刺参南方池塘吊养技术研究

利用7万只2~3cm的刺参在福建省莆田市开展了池塘吊养试验。经150d培养,成活率达92%,平均体长为12.0cm(108g/只),最大个体达15.6cm。总结出一套池塘吊养、冬季南方越冬的刺参养殖技术,为南方冬季海水增添新的养殖品种。     

Investigation on fecundity, follicles and free embryo size of pond-reared pike (Esox lucius) of different age and size

The purpose of the present study is to investigate the gonadosomatic index (GSI %), the absolute and relative fecundity of one-year-old pike weighing over 400 g and at the same time to study the dependence between the egg size and the size, behavior and vitality of the free embryos obtained from one- and two-year-old spawners. The study involved two weight groups of females, differing in age and body weight and length—one-year-old (W = 514 g, SL = 36.1 cm) and two-year-old matured pike (W = 1454 g, SL = 49.3 cm). Ovary samples were fixed and egg follicles containing maturing oocytes counted and weight. The weight and length of the free embryos from semi-artificial spawning were measured. The results showed that, when raising this species under farmed conditions, more than 40% (in rarer cases 90%) of one-year-old pike females reached over 400 g and 35 cm (SL) and reached puberty. Absolute fecundity of 15,030 follicles (30 follicles per gram body weight) was observed; the GSI was nearly 15% and the follicle weight reached 3.7 mg. This data differs significantly from that obtained from the larger two-year-old fishes: absolute fecundity 41,363 follicles (28 follicles per gram body weight), GSI nearly 20%, follicle weight 5.8 mg. Results showed that the different follicle size determines the free-embryo size. A positive linear correlation was found between the egg follicle weight and the free-embryos weight (r = 0.7143). The free embryos obtain from the one- and two-year-old spawners differed significantly both in terms of their weight (7.13 mg against 10.61 mg) and total length (0.81 cm against 0.97 cm), the differences being 1.5- and 1.2-fold, respectively.     

盐碱池塘养殖达里湖瓦氏雅罗鱼试验初报

将15万粒瓦氏雅罗鱼受精卵移植到呼和浩特市"2814"项目区的盐碱池塘,以研究其在盐碱池塘环境下的养殖技术与生长速度。经过120d的养殖,其生长速度比在达里湖自然生长要快2～3倍,这为内蒙古自治区在池塘养殖上增加了一个新的优良养殖品种。