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2008年天泓渔业以9520万元购买了大通湖49年的经营权,致力将这12.4万亩的大通湖打造为“中国湖泊低碳循环渔业第一湖”。 相似文献
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金鸡湖是长江下游平原地区的一个浅水型湖泊,水面10,768亩,平均水深1.5米。从1974年始,我们进行了金鸡湖渔业利用及高产稳产技术的研究,着重地研究和采取了几项综合技术措施,对湖泊渔业实施生态学管理,使金鸡湖渔业取得显著的增产效果。到去年为止, 相似文献
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为了探讨适合池塘生态渔业模式,提高池塘的经济效益,1988年我站在胜丰乡板桥湖渔场养鱼户蔡冬伍一口8亩大的成鱼池内开展了“鱼、猪、鸭”生态渔业模式试验,效益十分可观,现将试验情况小结如下: 相似文献
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渔业水面开放是指水面富余的地区和单位,以优惠的让利办法,大开湖门、库门、使社会劳动力、技术、资金向水面资源流动,从而加速目前闲置水面的并发利用,提高渔业生产力水平。 相似文献
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鱼类胃肠道内分泌细胞的研究进展 总被引:6,自引:0,他引:6
免疫组织化学技术是近年来迅速发展起来的一门新的边缘学科 ,它具有灵敏度高、特异性强、定位准确和应用广泛等优点 ,能够对胃肠道内分泌细胞进行准确地鉴别和定位[1] 。该技术的应用为鱼类胃肠道内分泌细胞的研究开辟了有效途径 ;同时对鱼类胃肠道内分泌细胞的不断研究也推动了免疫组织化学技术的进一步发展。迄今为止 ,国内外学者对鱼类胃肠道内分泌细胞的鉴别和定位已作了大量工作。1 鱼类胃肠道内分泌细胞的种类对鱼类胃肠道内分泌细胞进行鉴别和定位均使用哺乳动物的抗血清 ,迄今为止还未发现使用专门的鱼类抗血清对鱼类胃肠道内分泌… 相似文献
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Histological observations of the gonads of Siganus argenteus showed that gametes developed toward the last quarter moon from May to July. Weekly changes in plasma steroid hormones were correlated closely with gonadal development. Human chorionic gonadotropin (hCG) stimulated in vitro production of steroid hormones at the specific lunar phase. These results suggest that the concomitant physiological events in the gonads strictly changes with the lunar cycle. 相似文献
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F. Lahnsteiner 《Aquaculture Research》2000,31(3):245-258
The present paper summarizes the data on a semen cryopreservation method for the Salmonidae (Oncorhynchus mykiss, Salmo trutta f. lacustris, Salvelinus fontinalis, Salvelinus alpinus, Salmo trutta f. fario, Hucho hucho, Coregonus lavaretus, Thymallus thymallus) and for the Northern pike (Esox lucius) published during recent years. It describes (1) methods used for the determination of sperm viability; (2) the protective efficiency of substances specifically for protection of internal and external parts of cells and the process of extender development; (3) the freezing, thawing and fertilization conditions; and (4) the tolerable deviations from the freezing protocol for more easy application. Finally, biomarkers are reported that predict the suitability of semen for cryopreservation and the quality of frozen–thawed semen. 相似文献
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海洋生物资源的可持续开发和利用已成为全球海洋生物资源管理的重心。预警原则作为一种新颖的环境资源管理手段,其对海洋生物资源养护的有效性已为一些国际协定和一些国家的国内立法所确认。目前我国海洋生物资源管理实践和相关法规并没有明确采用预警原则。因而,针对我国近海生物资源养护不利的现状,我国有必要增订相关立法,将预警原则规定为我国海洋生物资源管理的基本原则,并根据我国各海域的具体情况,有针对性的适用预警原则,以顺应全球海洋生物资源养护的大趋势。 相似文献
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K Arbeiter 《Tier?rztliche Praxis》1987,15(3):291-294
BPH (benign prostatic hyperplasia) is frequently observed in male dogs older than five years. Uncomplicated BPH is therefore regarded as a normal aging process. Only 1-2% of the males develop malign tumors, furthermore acute or chronic prostatitis, abscesses or cysts. The diagnosis of prostatic diseases requires special physical and laboratory examinations. For the treatment hormonal effective substances, antibiotics, antiphlogistics, analgesics and surgical procedures (prostatectomy, castration) are recommended. The author successfully uses a therapy in two phases starting with an intensive medication (Tardack plus antibiotics s.c./p.o. and local) for at least 10, up to 30 days, followed by surgery. Particularities in diagnosis and therapy are pointed out. 相似文献