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真蛸幼体培育的现状、难点与展望 总被引：2，自引：0，他引：2
真蛸是蛸类动物中经济价值较高的一种，也是世界上研究最多、知名度最高的头足类之一，在地中海、拉丁美洲和亚洲均有广阔的市场。真蛸具有以下适于养殖的特点：1）食物转化率高，它可以转化消化食物的40％～60％；2）生长率高，它的生长率每天大约为3％；3）蛋白含量高，占干重的70％～90％；4）怀卵量高，每个成熟个体怀卵量在10万～50万粒。由于其广阔的市场空间和优良的生物学性状，多年来众多学者对其生态、生理、行为、繁殖、生长和养殖进行了广泛的研究，为开展真蛸养殖提供了很好的基础。本文介绍了国外在真蛸幼体培育方面的研究情况，以期为国内蛸类动物的人工育苗和人工养殖提供参考。 相似文献
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真蛸为福建省近年来新兴的海水养殖优良种类,具有较高的营养价值、商品价值和产业化养殖前景。本文报道了福建省水产研究所2008年-2011年真蛸人工繁殖及受精卵孵化结果：127头雌亲蛸经强化培育,共有77头产卵,获卵194×10^4粒,孵出143．4×10^4头浮游幼体。雌亲蛸获产率46．2％～86．7％,卵子受精率75．6％-91．8％,受精卵孵化率77．9％～95．0％。在20．0～22．5℃水温条件下,真蛸受精卵经21～36d开始孵出,孵出后4～6d为孵出高峰,每窝卵开始孵出至孵化结束维持10—16d。 相似文献
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真蛸(Ooctopus ocellatus),俗名真章、章鱼、红章,是一种很有养殖潜力的水产经济品种。但养殖周期不易过长,因真蛸寿命很短,只有12￣18个月当体重超过3kg时,死亡开始增加,养殖就导致减产。从2006年6月份开始对真蛸养殖进行试验,现将海水网箱养殖试验结果做如下介绍: 相似文献
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人工养殖条件下真蛸的生物学特性及胚胎发育 总被引：3，自引：1，他引：2
对人工养殖条件下真蛸(Octopus vulgaris)的生物学特性和胚胎发育进行了初步研究.结果表明,真蛸喜栖息于阴暗的场所,隐居,主要捕食一些活体甲壳类和贝类,也能很好的适应死鱼、蟹和贝类等饵料,夜间或傍晚摄食较为活跃.繁殖季节,雌、雄个体间存在交配行为,临产时亲蛸(♀)藏入巢穴,受精卵分批产出,呈穗状悬挂于巢穴顶部或四壁,亲蛸(♀)具有护卵行为.人工养殖条件下亲蛸不能全部产出其所怀的卵,产卵量为7×104～20×104粒,单位体重产卵量为42～71粒·g-1.受精卵为盘状卵裂,经过肉眼可见的红珠期、黑珠期、胚胎的逆转,水温18.2～22.1℃时,真蛸幼体经过35～42 d孵化出膜;22.3～26.9℃时,真蛸幼体经过24～37 d孵化出膜;24.6～28.3℃时,真蛸幼体经过23～33 d孵化出膜. 相似文献
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正真蛸俗称章鱼、八爪鱼、红章等,为暖水性种,广泛分布于日本以南太平洋、印度洋、大西洋和地中海海域,是我国南方近海的重要经济蛸类。真蛸肉嫩味美,蛋白质丰富,是海味佳品和滋补品,在日本、韩国有很大的市场,为重要的出口水产品,是一种很有养殖潜力的水产经济品种。但由于过渡捕捞,资源遭到严重破坏,自然资源明显衰退。随着人们对真蛸这一优质产品的需求日益增长,发展真蛸养殖业势在 相似文献
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Louis H. DiSalvo Elias Alarcon Edwin Martinez 《Aquaculture (Amsterdam, Netherlands)》1983,30(1-4):357-362
Oysters transferred from south to north-central Chile were induced to mature and spawn outside their natural breeding season. The larvae were set on shell particles and whole shell as cultch, and early growth data were obtained. Hatchery production of this species in winter months may help the development of commercial oyster production in southern Chile which is currently limited by summer spatfall. 相似文献
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Clyde L. MacKenzie 《Aquaculture (Amsterdam, Netherlands)》1977,10(1):45-51
A single application of quicklime (calcium oxide), spread at a rate of 6.75 metric tons/ha, was used to prepare dormant oyster setting beds for spat production. Of 2 000 ha in Long Island Sound, Connecticut, U.S.A., 1200 ha had sufficient shells to cover at least 75% of the bottom. However, these shells had a continuous fouling organism layer that would prevent significant oyster setting. Many beds had predator populations of sea stars (Asterias forbesi) and oyster drills (Urosalpinx cinerea and Eupleura caudata). Quicklime cleans the shells by killing fouling organisms, and also controls sea stars and embryonic oyster drills.When the supply of clean shells for annual spreading on the setting beds is limited, use of the quicklime method prepares greater quantities of shells for possible oyster set. 相似文献
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血鹦鹉的池塘养殖试验 总被引：1，自引：0，他引：1
为研究池塘养殖鹦鹉鱼(Cichlasoma synspilum×C.citrine)的可行性及其经济效益,以1~2cm体长的鹦鹉鱼幼苗为试验对象,在天祥水产公司一0.53hm2池塘,投放10万尾鱼苗,进行为期3个月的池塘养殖试验。通过对血鹦鹉的日常管理包括饵料投喂、水质调控,探究其池塘养殖过程中常见问题和解决方法,为规模化池塘养殖血鹦鹉探寻一条可行的道路。结果表明,池塘养殖血鹦鹉鱼类不仅能实现天津地区有限土地资源的最大利用化,而且也能降低养殖成本,实现利益的最大化。 相似文献
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通过比较大口黑鲈(Micropterus salmoides)在流水槽-池塘接力养殖和池塘养殖两种模式中的存活率、生长、性腺成熟、饵料系数的差异,以探索大口黑鲈流水槽-池塘接力养殖新模式的可行性。在8月初将大口黑鲈鱼苗(初始平均体重为23.933 g)分别放养于池塘和水槽中养殖,并于次年4月份将流水槽养殖的大口黑鲈转入池塘接力养殖至6月份,定期检测大口黑鲈生长、性腺成熟系数、饵料系数等。结果表明:流水槽养殖大口黑鲈存活率高于池塘养殖组,流水槽养殖组水质指标(溶解氧、氨氮、亚硝酸盐)均优于池塘养殖组;在养殖前期,池塘组保持了生长优势,11月份开始生长减缓,每隔2个月体重存在显著差异,而流水槽养殖组鲈鱼体重在各月份之间差异显著;在各个采样时间点,池塘养殖组鲈鱼体重离散系数高于流水槽养殖组,而水槽组中离散系数随鲈鱼生长呈现波动起伏;3-4月份是大口黑鲈性腺发育期,在此阶段流水槽中鲈鱼的性腺成熟系数为3-6月中的最高;在整个养殖周期内3-4月份日增量最低。综上所述,在养殖前期,池塘组鲈鱼的生长略占优势,但在存活率、水质、饵料系数、性腺发育等方面劣于流水槽组;养殖后期,流水槽组存在饵料系数升高、个体差异增大、生长速率减缓等问题,从生长和经济成本的考虑转入池塘养殖更有利,因此流水槽-池塘接力养殖大口黑鲈具有一定的可行性,4月份是将大口黑鲈从流水槽转移至池塘进行接力养殖的适宜时期。 相似文献
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泥蚶工厂化育壮苗技术研究 总被引：1，自引：0，他引：1
利用普通扇贝育苗场进行泥工厂化育苗壮苗试验，亲蚶在室内丰饵能、成熟后自然排放，采卵孵化。幼虫、稚贝以叉鞭金藻、小球藻为饵料。以筛滤的滩泥作附着基，每天换水放干氏，定期换泥洗苗。１９９６年在底面积４８０ｍ＾２水泥池中，育出平均壳长１．０９ｍｍ的蚶苗１６５３９万粒。１９９６年１１月专家鉴定认为，技术水平居国内领先。 相似文献
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Fisheries Science - A part of fishery waste, such as scallop or oyster shells, are utilized for fertilizer, feed, soil conditioner, or fishing ground preparations, and most of the shells from... 相似文献
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我国蟹类土池育苗技术研究进展 总被引：1，自引：0，他引：1
蟹类养殖产业已成为我国水产养殖的支柱产业之一。中华绒螯蟹(Eriocheir sinensis,以下简称河蟹)、三疣梭子蟹(Portunus trituberculatus,以下简称梭子蟹)、拟穴青蟹(Scylla paramamosain,以下简称青蟹)是我国主要的养殖蟹类。目前3种蟹类土池育苗技术发展不平衡,河蟹、梭子蟹土池育苗技术较为成熟,已经普及推广并在养殖生产中发挥重要作用;青蟹土池育苗尚未有成功的报道。本文综述了我国河蟹、梭子蟹、青蟹苗种生产技术,尤其是土池育苗技术的研究进展,并对河蟹、梭子蟹土池育苗关键技术进行分析,旨在探讨蟹类土池育苗技术应用于青蟹土池育苗的可行性。 相似文献
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Greg S. Jakob Gary D. Pruder Jaw-Kai Wang 《Journal of the World Aquaculture Society》1993,24(3):344-351
This study was conducted to quantify the potential of Crassostrea virginica biculture using marine shrimp pond water. It was envisioned that this biculhre could avoid cost and reliability problems associated with the mass production of algae as oyster feed. Such problems contributed to the failure of previous attempts to commercialize oyster culture.
Oysters were reared in each of two flow through 310 L tanks receiving shrimp pond water from selected commercial semi-intensive shrimp ponds. In each tank, pond water was delivered to the upper trays and flowed downward through each of two seven tray stacks. For both tanks, mean oyster growth rate (2 g/wk) and survival (79%) from seed (0.04 g) to market size (55.0 g) compared favorably with previous reports and for the first time approximated the growth projected in a 1968 engineering study by American Cyanamid (Calbo et al. 1968).
Oyster growth within and between tanks indicated a relationship between biomass and exchange rates. During a 65 d controlled monitoring period mean oyster growth rates of 3.7 g/wk were achieved in upper trays of both tanks. Data are provided to estimate optimum pond water flow rate and oyster biomass relationships. The prospects for shrimp and bivalve co-culture appear promising. 相似文献
Oysters were reared in each of two flow through 310 L tanks receiving shrimp pond water from selected commercial semi-intensive shrimp ponds. In each tank, pond water was delivered to the upper trays and flowed downward through each of two seven tray stacks. For both tanks, mean oyster growth rate (2 g/wk) and survival (79%) from seed (0.04 g) to market size (55.0 g) compared favorably with previous reports and for the first time approximated the growth projected in a 1968 engineering study by American Cyanamid (Calbo et al. 1968).
Oyster growth within and between tanks indicated a relationship between biomass and exchange rates. During a 65 d controlled monitoring period mean oyster growth rates of 3.7 g/wk were achieved in upper trays of both tanks. Data are provided to estimate optimum pond water flow rate and oyster biomass relationships. The prospects for shrimp and bivalve co-culture appear promising. 相似文献
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为营造东风螺水泥池养殖经济、高效的底质环境，进行了水泥池两种铺沙方式东风螺养殖效果的比较试验。结果表明，在不同年份的相同季节，养殖水温无明显差异，养殖密度大致相同的情况下，同一铺沙方式方斑东风螺（B.aerolataLink）和波部东风螺（B．formosaehabei）的生长无明显差异。而离底铺沙，方斑东风螺和波部东... 相似文献
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为寻找卤虫卵的合适代用饵料,降低河蟹育苗成本,在１９９７年春季各期河蟹育苗中,进行投喂“高成”牌开口微囊配合饵料试验。结果;试验池幼体胃肠饱满度好,蜕壳时间短,变态整齐,成活率与对照组判别不五,而成本仅为对照池的４５％,经济效益显著,且不会对以后幼体发育造成不良影响。 相似文献