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连云港市陆地养殖90%以上都是根据不同品种的习性,进行不同方式的混养。从近几年池塘养殖情况看,三疣梭子蟹、对虾、杂色蛤(图见彩中插2)等混养效益比较明显,现通过一个池塘养殖事例,将其养殖方法介绍如下,供大家参考: 相似文献
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为探索以海水为水源的滨海池塘养虾业全面复兴之路，2003年，我们在荣成市成山镇落龙湾养虾场，采用中国海洋大学李德尚教授课题组“对虾暴发性病毒病预防”专利技术，进行了对虾无公害健康养殖试验(养殖品种为南美白对虾)，达到了预期的目标。现将试验情况介绍如下。 相似文献
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当前我国的海水池塘养殖模式及其发展趋势 总被引：2，自引：0，他引：2
海水池塘养殖、滩涂贝类养殖及海上筏式养殖是海水养殖业的三大主要养殖方式。我国的海水池塘养殖是从20世纪70年代末中国对虾的大规模养殖开始的．其间经历了对虾低密度养殖→对虾高密度养殖→两茬低密度养殖→多品种生态养殖的发展轨迹。循着这一演变轨迹可以发现，不同的养殖模式对海水池塘的生态效益起着决定性作用，而生态效益又对社会效益和经济效益产生影响，进而影响海水池塘养殖业的发展。本文拟从生态效益角度出发，对目前我国对虾池塘养殖的几种模式作一粗浅的分析、评价。 相似文献
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东营市历年来以养殖中国对虾、南美白对虾为主,但因品种单一,经济效益低下。为给本地区增加新的养殖品种,探索海水养殖的新路子,我们引进了刺参进行池塘养殖试验,并取得成功。现总结如下： 相似文献
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福建省中南部海水池塘长期养殖日本对虾、中国对虾,但由于养殖方法单一粗放、养殖技术水平不高,导致病害四处传播,疾病频繁发生。自1997年对虾爆发病毒性疾病后,海水池塘单养对虾效益明显下降,造成养殖弱潮,后来为了减少养殖的盲目性、风险性,提高池塘综合效益,探索更多更好的养殖方法及品种,从业者把池塘养殖从单养模式改为混养模式。经过多年实践证明,多品种混养有利于改善池 相似文献
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为改变我国广大盐碱地区池塘长期依靠养鱼、经济效益极低、甚至亏损的局面，并探索中国对虾防病养虾的新途径，１９９９年日照市水产研究所在棘洪滩水库管理处进行了中国对虾在盐碱地池塘中的养殖试验，现报告如下：一、材料与方法１．养殖池塘选用棘洪滩水库大坝西侧５个总面积２４．８亩的盐碱地养鱼池塘，并配有水车式增氧机。２．水源利用棘洪滩水库旁导渗透沟内的水，其比重为１．００２～１．００３（２０℃）。３．苗种来源５月８日采用日照市水产研究所培育的SPF中国对虾苗，暂养至１．８厘米，取４０万尾在室内水池中经１２天淡… 相似文献
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Shun Watanabe Jun Aoyama Seishi Hagihara Bunpei Ai Rhodora V. Azanza Katsumi Tsukamoto 《Fisheries Science》2013,79(3):375-383
Anguilla luzonensis and A. huangi were each described in 2009 using eels obtained from northern Luzon Island. We examined the taxonomic status of these two groups of eels using morphological and molecular genetic characters. There were no significant differences in two vertebrae counts between eels of A. luzonensis and A. huangi. Mitochondrial 16S ribosomal RNA and cytochrome b genes sequences were obtained and compared among 28 specimens of A. luzonensis, the holotypes of A. luzonensis and A. huangi, and one specimen of the other 15 anguillid species. The specimens of A. luzonensis exhibited almost identical sequences, including the holotype, with only a few site differences, and the genetic difference between the holotypes of A. luzonensis and A. huangi was within the range of differences of specimens of A. luzonensis. The other anguillid species were genetically very different from A. luzonensis and A. huangi, although A. interioris is a closely related species. It is clear that A. luzonensis and A. huangi are the same species, and according to the principle of priority in zoological nomenclature, A. luzonensis Watanabe, Aoyama, and Tsukamoto, 2009 is the valid species name, and A. huangi Teng, Lin, and Tzeng, 2009 is a junior synonym of A. luzonensis. 相似文献
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《Journal Of Aquatic Food Product Technology》2013,22(4):61-70
No abstract available for this article. 相似文献
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Charles C. Mischke Matt J. Griffin Terrence E. Greenway David Wise 《Journal of the World Aquaculture Society》2013,44(2):288-292
Mosquitofish, Gambusia sp., have been spread throughout the world to biologically control mosquitoes. However, the fish has gained a reputation as an invasive species and has been implicated in displacing native aquatic species. Gambusia affinis are native to the southeastern United States and commonly occur in commercial channel catfish, Ictalurus punctatus, production ponds. We investigated effects of mosquitofish presence on zooplankton populations, water quality, disease occurrence, and fish production in experimental ponds. There were no differences between ponds with or without mosquitofish in numbers of calanoid copepods, cyclopoid copepods, total copepods, Bosmina sp., Ceriodaphnia sp., Moina sp., Daphnia sp., or total cladocerans. There were also no differences in copepod and cladoceran sizes. Copepod nauplii were more numerous during the summer months in ponds with mosquitofish. There were no differences in water quality variables (soluble reactive phosphorus, nitrate, nitrite, ammonia, total nitrogen, total phosphorus, pH) or phytoplankton density between ponds stocked with and without mosquitofish. Catfish production and disease occurrence were also similar between ponds with and without mosquitofish. Although mosquitofish may cause problems when stocked outside their native range, there does not appear to be any adverse effects of mosquitofish presence in catfish production ponds. 相似文献
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Mulloway (Argyrosomus japonicus) occur in estuarine and coastal waters surrounding Australia, Africa, India, Pakistan, China, Korea and Japan, where they are important in fisheries. This study identified that mulloway in south-eastern Australia had similar growth rates, but matured at smaller lengths and younger ages, to those in South Africa and Western Australia. Growth of both sexes was similar to about 5 years, after which females grew faster and attained a greater maximum length than males. Female mulloway matured at 4–5 years of age with a L50 of 68 cm, whereas males matured at 2–3 years of age with a L50 of 51 cm. The commercial fishery in New South Wales was characterised by declining catches and a reduction in the proportion of mulloway of mature lengths in landings. During 2002–2005 commercial landings were dominated (83%) by fish within 15 cm of the current minimum legal total length of 45 cm and aged 2 and 3 years (>80%), even though mulloway can attain lengths of 200 cm and live >30 years. Estimates of the rates of instantaneous total mortality ranged between 0.34 and 0.45, whilst the rate of instantaneous natural mortality (M) was estimated to be approximately 0.12. Yield-per-recruit analyses indicated that mulloway in New South Wales are being growth overfished and substantial increases in yield could be achieved by increasing the length at first harvest. Values of the spawning potential ratio were below 0.2 under a range of mortality estimates, suggesting that mulloway are at risk of recruitment overfishing. These results suggest that the spawning stock of mulloway in south-eastern Australia has been depleted and that remedial management action is required to protect this iconic species. 相似文献
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Fisheries Science - Fermentation of kamaboko in koji with wheat (KW), rice (KR), brown rice (KB), or soybean (KS) was performed by simulation of tofuyo processing. Moisture and protein content... 相似文献
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Sperm Motilities in Waigieu Seaperch,Psammoperca waigiensis: Effects of Various Dilutions,pH, Temperature,Osmolality, and Cations 
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下载免费PDF全文 The objectives of this study were to evaluate the effects of varying dilutions, pH, temperature, osmolality, and cations on sperm motility parameters in waigieu seaperch, Psammoperca waigiensis. The maximum velocity of average in path (VAP), percentage of motile cells (MOT), and duration of sperm motility (DSM) were observed when semen was diluted in artificial seawater (ASW) at a ratio of 1:100 (144.9 ± 0.6 µm/sec, 95.6 ± 0.4%, and 230.3 ± 2.3 sec, respectively), at 30 C (142.0 ± 0.6 µm/sec, 93.6 ± 0.4%, and 238.3 ± 0.9 sec, respectively), and pH 8 (144.8 ± 0.6 µm/sec, 93.3 ± 0.4%, and 234.0 ± 1.5 sec, respectively). Maximum VAP, MOT, and DSM were obtained in each solution containing 0.6 M NaCl (143.8 ± 1.0 µm/sec, 91.3 ± 2.0%, and 230.6 ± 4.2 sec, respectively), 0.6 M KCl (135.1 ± 3.1 µm/sec, 91.1 ± 3.1%, and 230.3 ± 3.7sec, respectively), 0.2M CaCl2 (105.3 ± 4.7μm/sec, 47.9 ± 2.7%, and 120.7 ± 1.3 sec, respectively), 0.2 M MgCl2 (107.3 ± 3.0 m/s, 42.1 ± 3.3%, and 120.3 ± 4.8 sec, respectively), and osmolality of 400 mOsm/kg (145.1 ± 2.5 µm/sec, 93.0 ± 2.1%, and 346.5 ± 4.4s, respectively). We used these mediums as artificial insemination media for fertilizing matured eggs. The results showed that the fertilization and hatching rates in 0.6 M NaCl (75.3 ± 0.6% and 57.0 ± 2.4%, respectively), ASW (70.8 ± 1.2% and 51.2 ± 1.8%, respectively), or 400 mOsm/kg (72.9 ± 1.8% and 55.3 ± 1.6%, respectively) were higher than that in seawater (63.9 ± 1.2% and 39.2 ± 3.9%, respectively). In conclusion, using 0.6 M NaCl, ASW, or 400 mOsm/kg as an artificial insemination medium is effective for fertilizing of waigieu seaperch. 相似文献
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The effects of exposing the eggs of Pacific threadfin and amberjack eggs (AEs) to different concentrations of hydrogen peroxide for 5 min on hatch rate and survival were assessed in a series of experiments using a petri dish model rearing system. Despite significant inter‐batch variation in hatch rate, it was shown that eggs of both species could be safely exposed to up to 11 340 mg L−1 H2O2 for 5 min. Exposure to 34 230 mg L−1 H2O2 for 5 min was shown to be lethal to AEs at a late stage of development. In two further experiments, it was demonstrated that Pacific threadfin eggs were resistant to all tested concentrations of a range of polyvinylpyrrolidone iodine (PVP‐I) concentrations and contact times (up to 1000 mg L−1 PVP‐I for 10 min). The level of bacteria adhering to the eggs of both species was highly variable. Where eggs were heavily colonized (>104 cfu egg−1), hydrogen peroxide concentrations of at least 11 340 mg L−1, or PVP‐I concentrations higher than 500 mg L−1 for 10 min, were required for effective sterilization. In less colonized batches, rinsing in sterile seawater or exposure to lower (550 mg L−1) concentrations of H2O2 was sufficient to result in high apparent levels of surface sterility (<1 cfu egg−1). 相似文献
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Aquaculture International - The world population continues to increase day by day. Therefore, aquaculture needs to grow in order to response the need for protein foods and to cope with the problem... 相似文献